Annotation of loncom/xml/lonplot.pm, revision 1.147
1.1 matthew 1: # The LearningOnline Network with CAPA
2: # Dynamic plot
3: #
1.147 ! www 4: # $Id: lonplot.pm,v 1.146 2008/06/09 10:07:01 foxr Exp $
1.1 matthew 5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
1.35 matthew 28:
1.1 matthew 29: package Apache::lonplot;
1.10 matthew 30:
1.1 matthew 31: use strict;
1.89 matthew 32: use warnings FATAL=>'all';
33: no warnings 'uninitialized';
1.10 matthew 34: use Apache::File;
1.1 matthew 35: use Apache::response;
1.2 matthew 36: use Apache::lonxml;
1.20 matthew 37: use Apache::edit;
1.106 albertel 38: use Apache::lonnet;
1.113 www 39: use LONCAPA;
40:
1.10 matthew 41:
1.129 albertel 42: use vars qw/$weboutputformat $version/;
1.97 matthew 43:
1.109 foxr 44:
1.108 foxr 45:
1.33 harris41 46: BEGIN {
1.97 matthew 47: &Apache::lonxml::register('Apache::lonplot',('gnuplot'));
48: #
49: # Determine the version of GNUPLOT
50: $weboutputformat = 'gif';
1.129 albertel 51: my $versionstring = `gnuplot --version 2>/dev/null`;
52: ($version) = ($versionstring =~ /^gnuplot ([\d.]+)/);
53: if ($version >= 4) {
1.97 matthew 54: $weboutputformat = 'png';
55: }
1.108 foxr 56:
57: }
58:
1.1 matthew 59:
1.10 matthew 60: ##
61: ## Description of data structures:
62: ##
63: ## %plot %key %axis
64: ## --------------------------
65: ## height title color
66: ## width box xmin
67: ## bgcolor pos xmax
68: ## fgcolor ymin
69: ## transparent ymax
70: ## grid
71: ## border
72: ## font
1.19 matthew 73: ## align
1.10 matthew 74: ##
75: ## @labels: $labels[$i] = \%label
76: ## %label: text, xpos, ypos, justify
1.14 matthew 77: ##
1.10 matthew 78: ## @curves: $curves[$i] = \%curve
1.14 matthew 79: ## %curve: name, linestyle, ( function | data )
1.10 matthew 80: ##
81: ## $curves[$i]->{'data'} = [ [x1,x2,x3,x4],
82: ## [y1,y2,y3,y4] ]
83: ##
1.21 matthew 84:
85: ###################################################################
86: ## ##
87: ## Tests used in checking the validitity of input ##
88: ## ##
89: ###################################################################
1.29 matthew 90:
1.32 matthew 91: my $max_str_len = 50; # if a label, title, xlabel, or ylabel text
92: # is longer than this, it will be truncated.
93:
1.135 faziophi 94: my %linetypes =
95: (
96: solid => 1,
97: dashed => 0
98: );
99:
1.29 matthew 100: my %linestyles =
101: (
102: lines => 2, # Maybe this will be used in the future
103: linespoints => 2, # to check on whether or not they have
104: dots => 2, # supplied enough <data></data> fields
105: points => 2, # to use the given line style. But for
106: steps => 2, # now there are more important things
107: fsteps => 2, # for me to deal with.
108: histeps => 2,
1.34 matthew 109: errorbars => 3,
110: xerrorbars => [3,4],
111: yerrorbars => [3,4],
1.35 matthew 112: xyerrorbars => [4,6],
1.34 matthew 113: boxes => 3,
1.110 albertel 114: filledcurves => 2,
1.35 matthew 115: vector => 4
1.29 matthew 116: );
117:
1.11 matthew 118: my $int_test = sub {$_[0]=~s/\s+//g;$_[0]=~/^\d+$/};
1.19 matthew 119: my $real_test =
120: sub {$_[0]=~s/\s+//g;$_[0]=~/^[+-]?\d*\.?\d*([eE][+-]\d+)?$/};
1.62 matthew 121: my $pos_real_test =
122: sub {$_[0]=~s/\s+//g;$_[0]=~/^[+]?\d*\.?\d*([eE][+-]\d+)?$/};
1.79 matthew 123: my $color_test = sub {$_[0]=~s/\s+//g;$_[0]=~/^x[\da-fA-F]{6}$/};
1.1 matthew 124: my $onoff_test = sub {$_[0]=~/^(on|off)$/};
1.15 matthew 125: my $key_pos_test = sub {$_[0]=~/^(top|bottom|right|left|outside|below| )+$/};
1.119 albertel 126: my $sml_test = sub {$_[0]=~/^(\d+|small|medium|large)$/};
1.29 matthew 127: my $linestyle_test = sub {exists($linestyles{$_[0]})};
1.67 matthew 128: my $words_test = sub {$_[0]=~s/\s+/ /g;$_[0]=~/^([\w~!\@\#\$\%^&\*\(\)-=_\+\[\]\{\}:\;\'<>,\.\/\?\\]+ ?)+$/};
1.21 matthew 129:
130: ###################################################################
131: ## ##
132: ## Attribute metadata ##
133: ## ##
134: ###################################################################
1.47 matthew 135: my @gnuplot_edit_order =
1.123 albertel 136: qw/alttag bgcolor fgcolor height width texwidth fontface font texfont
137: transparent grid samples
138: border align plotcolor plottype gridtype lmargin rmargin
1.115 albertel 139: tmargin bmargin major_ticscale minor_ticscale boxwidth gridlayer fillstyle
1.110 albertel 140: pattern solid/;
1.101 matthew 141:
1.105 matthew 142: my $margin_choices = ['default',0..20];
1.48 matthew 143:
1.47 matthew 144: my %gnuplot_defaults =
1.1 matthew 145: (
1.64 matthew 146: alttag => {
147: default => 'dynamically generated plot',
148: test => $words_test,
1.120 albertel 149: description => 'Brief description of the plot',
1.64 matthew 150: edit_type => 'entry',
151: size => '40'
152: },
1.20 matthew 153: height => {
1.65 matthew 154: default => 300,
1.20 matthew 155: test => $int_test,
1.120 albertel 156: description => 'Height of image (pixels)',
1.38 matthew 157: edit_type => 'entry',
158: size => '10'
1.20 matthew 159: },
160: width => {
1.65 matthew 161: default => 400,
1.20 matthew 162: test => $int_test,
1.120 albertel 163: description => 'Width of image (pixels)',
1.38 matthew 164: edit_type => 'entry',
165: size => '10'
1.20 matthew 166: },
167: bgcolor => {
168: default => 'xffffff',
169: test => $color_test,
1.120 albertel 170: description => 'Background color of image (xffffff)',
1.38 matthew 171: edit_type => 'entry',
172: size => '10'
1.20 matthew 173: },
174: fgcolor => {
175: default => 'x000000',
176: test => $color_test,
1.120 albertel 177: description => 'Foreground color of image (x000000)',
1.38 matthew 178: edit_type => 'entry',
179: size => '10'
1.20 matthew 180: },
181: transparent => {
182: default => 'off',
183: test => $onoff_test,
1.34 matthew 184: description => 'Transparent image',
1.45 matthew 185: edit_type => 'onoff'
1.20 matthew 186: },
187: grid => {
1.65 matthew 188: default => 'on',
1.20 matthew 189: test => $onoff_test,
1.34 matthew 190: description => 'Display grid',
1.45 matthew 191: edit_type => 'onoff'
1.20 matthew 192: },
1.110 albertel 193: gridlayer => {
194: default => 'off',
195: test => $onoff_test,
196: description => 'Display grid front layer over filled boxes or filled curves',
197: edit_type => 'onoff'
198: },
199: box_border => {
200: default => 'noborder',
201: test => sub {$_[0]=~/^(noborder|border)$/},
202: description => 'Draw border for boxes',
203: edit_type => 'choice',
204: choices => ['border','noborder']
205: },
1.20 matthew 206: border => {
207: default => 'on',
208: test => $onoff_test,
1.34 matthew 209: description => 'Draw border around plot',
1.45 matthew 210: edit_type => 'onoff'
1.20 matthew 211: },
212: font => {
1.119 albertel 213: default => '9',
1.20 matthew 214: test => $sml_test,
1.125 albertel 215: description => 'Font size to use in web output (pts)',
1.20 matthew 216: edit_type => 'choice',
1.126 albertel 217: choices => [['5','5 (small)'],'6','7','8',['9','9 (medium)'],'10',['11','11 (large)'],'12','15']
1.20 matthew 218: },
1.120 albertel 219: fontface => {
220: default => 'sans-serif',
221: test => sub {$_[0]=~/^(sans-serif|serif|classic)$/},
222: description => 'Type of font to use',
223: edit_type => 'choice',
224: choices => ['sans-serif','serif', 'classic']
225: },
1.110 albertel 226: samples => {
1.77 matthew 227: default => '100',
228: test => $int_test,
229: description => 'Number of samples for non-data plots',
230: edit_type => 'choice',
231: choices => ['100','200','500','1000','2000','5000']
232: },
1.20 matthew 233: align => {
1.116 albertel 234: default => 'middle',
235: test => sub {$_[0]=~/^(left|right|middle|center)$/},
1.120 albertel 236: description => 'Alignment for image in HTML',
1.20 matthew 237: edit_type => 'choice',
1.116 albertel 238: choices => ['left','right','middle']
1.82 matthew 239: },
240: texwidth => {
241: default => '93',
242: test => $int_test,
243: description => 'Width of plot when printed (mm)',
244: edit_type => 'entry',
245: size => '5'
246: },
1.110 albertel 247: texfont => {
1.92 matthew 248: default => '22',
249: test => $int_test,
250: description => 'Font size to use in TeX output (pts):',
251: edit_type => 'choice',
1.96 matthew 252: choices => [qw/8 10 12 14 16 18 20 22 24 26 28 30 32 34 36/],
1.92 matthew 253: },
1.110 albertel 254: plotcolor => {
1.105 matthew 255: default => 'monochrome',
256: test => sub {$_[0]=~/^(monochrome|color|colour)$/},
257: description => 'Color setting for printing:',
258: edit_type => 'choice',
259: choices => [qw/monochrome color colour/],
260: },
1.110 albertel 261: pattern => {
262: default => '',
263: test => $int_test,
1.120 albertel 264: description => 'Pattern value for boxes:',
1.110 albertel 265: edit_type => 'choice',
266: choices => [0,1,2,3,4,5,6]
267: },
268: solid => {
269: default => 0,
270: test => $real_test,
271: description => 'The density of fill style for boxes',
272: edit_type => 'entry',
273: size => '5'
274: },
275: fillstyle => {
276: default => 'empty',
277: test => sub {$_[0]=~/^(empty|solid|pattern)$/},
278: description => 'Filled style for boxes:',
279: edit_type => 'choice',
280: choices => ['empty','solid','pattern']
281: },
282: plottype => {
1.87 matthew 283: default => 'Cartesian',
284: test => sub {$_[0]=~/^(Polar|Cartesian)$/},
285: description => 'Plot type:',
286: edit_type => 'choice',
1.94 matthew 287: choices => ['Cartesian','Polar']
1.87 matthew 288: },
1.115 albertel 289: gridtype => {
290: default => 'Cartesian',
1.118 albertel 291: test => sub {$_[0]=~/^(Polar|Cartesian|Linear-Log|Log-Linear|Log-Log)$/},
1.115 albertel 292: description => 'Grid type:',
293: edit_type => 'choice',
1.118 albertel 294: choices => ['Cartesian','Polar','Linear-Log','Log-Linear','Log-Log']
1.115 albertel 295: },
1.110 albertel 296: lmargin => {
1.101 matthew 297: default => 'default',
298: test => sub {$_[0]=~/^(default|\d+)$/},
299: description => 'Left margin width (pts):',
300: edit_type => 'choice',
301: choices => $margin_choices,
302: },
1.110 albertel 303: rmargin => {
1.101 matthew 304: default => 'default',
305: test => sub {$_[0]=~/^(default|\d+)$/},
306: description => 'Right margin width (pts):',
307: edit_type => 'choice',
308: choices => $margin_choices,
309: },
1.110 albertel 310: tmargin => {
1.101 matthew 311: default => 'default',
312: test => sub {$_[0]=~/^(default|\d+)$/},
313: description => 'Top margin width (pts):',
314: edit_type => 'choice',
315: choices => $margin_choices,
316: },
1.110 albertel 317: bmargin => {
1.101 matthew 318: default => 'default',
319: test => sub {$_[0]=~/^(default|\d+)$/},
1.104 www 320: description => 'Bottom margin width (pts):',
1.101 matthew 321: edit_type => 'choice',
322: choices => $margin_choices,
323: },
1.110 albertel 324: boxwidth => {
325: default => '',
326: test => $real_test,
1.120 albertel 327: description => 'Width of boxes, default is auto',
1.110 albertel 328: edit_type => 'entry',
329: size => '5'
330: },
1.101 matthew 331: major_ticscale => {
332: default => '1',
333: test => $real_test,
334: description => 'Size of major tic marks (plot coordinates)',
335: edit_type => 'entry',
336: size => '5'
337: },
338: minor_ticscale => {
339: default => '0.5',
340: test => $real_test,
341: description => 'Size of minor tic mark (plot coordinates)',
342: edit_type => 'entry',
343: size => '5'
344: },
1.1 matthew 345: );
346:
347: my %key_defaults =
348: (
1.20 matthew 349: title => {
350: default => '',
351: test => $words_test,
352: description => 'Title of key',
1.38 matthew 353: edit_type => 'entry',
354: size => '40'
1.20 matthew 355: },
356: box => {
357: default => 'off',
358: test => $onoff_test,
359: description => 'Draw a box around the key?',
1.45 matthew 360: edit_type => 'onoff'
1.20 matthew 361: },
362: pos => {
363: default => 'top right',
364: test => $key_pos_test,
1.120 albertel 365: description => 'Position of the key on the plot',
1.20 matthew 366: edit_type => 'choice',
367: choices => ['top left','top right','bottom left','bottom right',
368: 'outside','below']
369: }
1.1 matthew 370: );
371:
372: my %label_defaults =
373: (
1.20 matthew 374: xpos => {
375: default => 0,
376: test => $real_test,
1.120 albertel 377: description => 'X position of label (graph coordinates)',
1.38 matthew 378: edit_type => 'entry',
379: size => '10'
1.20 matthew 380: },
381: ypos => {
382: default => 0,
383: test => $real_test,
1.120 albertel 384: description => 'Y position of label (graph coordinates)',
1.38 matthew 385: edit_type => 'entry',
386: size => '10'
1.20 matthew 387: },
388: justify => {
389: default => 'left',
390: test => sub {$_[0]=~/^(left|right|center)$/},
391: description => 'justification of the label text on the plot',
392: edit_type => 'choice',
393: choices => ['left','right','center']
1.134 raeburn 394: },
395: rotate => {
396: default => 0,
397: test => $real_test,
398: description => 'Rotation of label (degrees)',
399: edit_type => 'entry',
400: size => '10',
1.20 matthew 401: }
1.1 matthew 402: );
403:
1.89 matthew 404: my @tic_edit_order = ('location','mirror','start','increment','end',
405: 'minorfreq');
1.45 matthew 406: my %tic_defaults =
407: (
408: location => {
409: default => 'border',
410: test => sub {$_[0]=~/^(border|axis)$/},
1.90 matthew 411: description => 'Location of major tic marks',
1.45 matthew 412: edit_type => 'choice',
413: choices => ['border','axis']
414: },
415: mirror => {
416: default => 'on',
417: test => $onoff_test,
1.120 albertel 418: description => 'Mirror tics on opposite axis?',
1.45 matthew 419: edit_type => 'onoff'
420: },
421: start => {
422: default => '-10.0',
423: test => $real_test,
1.90 matthew 424: description => 'Start major tics at',
1.45 matthew 425: edit_type => 'entry',
426: size => '10'
427: },
428: increment => {
429: default => '1.0',
430: test => $real_test,
1.90 matthew 431: description => 'Place a major tic every',
1.45 matthew 432: edit_type => 'entry',
433: size => '10'
434: },
435: end => {
436: default => ' 10.0',
437: test => $real_test,
1.90 matthew 438: description => 'Stop major tics at ',
1.45 matthew 439: edit_type => 'entry',
440: size => '10'
441: },
1.89 matthew 442: minorfreq => {
443: default => '0',
444: test => $int_test,
1.98 matthew 445: description => 'Number of minor tics per major tic mark',
1.89 matthew 446: edit_type => 'entry',
447: size => '10'
448: },
1.45 matthew 449: );
450:
1.132 albertel 451: my @axis_edit_order = ('color','xmin','xmax','ymin','ymax','xformat', 'yformat');
1.1 matthew 452: my %axis_defaults =
453: (
1.28 matthew 454: color => {
1.20 matthew 455: default => 'x000000',
456: test => $color_test,
1.120 albertel 457: description => 'Color of grid lines (x000000)',
1.38 matthew 458: edit_type => 'entry',
459: size => '10'
1.20 matthew 460: },
461: xmin => {
462: default => '-10.0',
463: test => $real_test,
1.120 albertel 464: description => 'Minimum x-value shown in plot',
1.38 matthew 465: edit_type => 'entry',
466: size => '10'
1.20 matthew 467: },
468: xmax => {
469: default => ' 10.0',
470: test => $real_test,
1.120 albertel 471: description => 'Maximum x-value shown in plot',
1.38 matthew 472: edit_type => 'entry',
473: size => '10'
1.20 matthew 474: },
475: ymin => {
476: default => '-10.0',
477: test => $real_test,
1.120 albertel 478: description => 'Minimum y-value shown in plot',
1.38 matthew 479: edit_type => 'entry',
480: size => '10'
1.20 matthew 481: },
482: ymax => {
483: default => ' 10.0',
484: test => $real_test,
1.120 albertel 485: description => 'Maximum y-value shown in plot',
1.38 matthew 486: edit_type => 'entry',
487: size => '10'
1.132 albertel 488: },
489: xformat => {
490: default => 'on',
491: test => sub {$_[0]=~/^(on|off|\d+(f|F|e|E))$/},
492: description => 'X-axis number formatting',
493: edit_type => 'choice',
494: choices => ['on', 'off', '2e', '2f'],
495: },
496: yformat => {
497: default => 'on',
498: test => sub {$_[0]=~/^(on|off|\d+(f|F|e|E))$/},
499: description => 'X-axis number formatting',
500: edit_type => 'choice',
501: choices => ['on', 'off', '2e', '2f'],
502: },
503:
1.1 matthew 504: );
505:
1.135 faziophi 506: my @curve_edit_order = ('color','name','linestyle','linewidth','linetype','pointtype','pointsize','limit');
1.60 matthew 507:
1.1 matthew 508: my %curve_defaults =
509: (
1.20 matthew 510: color => {
511: default => 'x000000',
512: test => $color_test,
1.120 albertel 513: description => 'Color of curve (x000000)',
1.38 matthew 514: edit_type => 'entry',
515: size => '10'
1.20 matthew 516: },
517: name => {
518: default => '',
519: test => $words_test,
1.120 albertel 520: description => 'Name of curve to appear in key',
1.38 matthew 521: edit_type => 'entry',
522: size => '20'
1.20 matthew 523: },
524: linestyle => {
525: default => 'lines',
526: test => $linestyle_test,
1.135 faziophi 527: description => 'Plot with:',
1.20 matthew 528: edit_type => 'choice',
1.38 matthew 529: choices => [keys(%linestyles)]
1.60 matthew 530: },
1.119 albertel 531: linewidth => {
1.130 albertel 532: default => 1,
1.119 albertel 533: test => $int_test,
1.135 faziophi 534: description => 'Line width (may not apply to all plot styles)',
1.119 albertel 535: edit_type => 'choice',
536: choices => [1,2,3,4,5,6,7,8,9,10]
537: },
1.135 faziophi 538: linetype => {
539: default => 'solid',
540: test => sub {$_[0]=~/^(solid|dashed)$/},
541: description => 'Line type (may not apply to all plot styles)',
542: edit_type => 'choice',
543: choices => ['solid', 'dashed']
544: },
1.60 matthew 545: pointsize => {
546: default => 1,
1.62 matthew 547: test => $pos_real_test,
1.135 faziophi 548: description => 'Point size (may not apply to all plot styles)',
1.62 matthew 549: edit_type => 'entry',
550: size => '5'
551: },
552: pointtype => {
553: default => 1,
1.60 matthew 554: test => $int_test,
1.135 faziophi 555: description => 'Point type (may not apply to all plot styles)',
1.60 matthew 556: edit_type => 'choice',
1.62 matthew 557: choices => [0,1,2,3,4,5,6]
1.110 albertel 558: },
559: limit => {
560: default => 'closed',
1.135 faziophi 561: test => sub {$_[0]=~/^(above|below|closed|x1|x2|y1|y2)$/},
1.120 albertel 562: description => 'Point to fill -- for filledcurves',
1.110 albertel 563: edit_type => 'choice',
1.135 faziophi 564: choices => ['above', 'below', 'closed','x1','x2','y1','y2']
1.110 albertel 565: },
1.1 matthew 566: );
567:
1.21 matthew 568: ###################################################################
569: ## ##
570: ## parsing and edit rendering ##
571: ## ##
572: ###################################################################
1.107 foxr 573:
574: undef %Apache::lonplot::plot;
575: my (%key,%axis,$title,$xlabel,$ylabel,@labels,@curves,%xtics,%ytics);
1.1 matthew 576:
1.47 matthew 577: sub start_gnuplot {
1.107 foxr 578: undef(%Apache::lonplot::plot); undef(%key); undef(%axis);
1.89 matthew 579: undef($title); undef($xlabel); undef($ylabel);
580: undef(@labels); undef(@curves);
581: undef(%xtics); undef(%ytics);
1.6 matthew 582: #
1.1 matthew 583: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
584: my $result='';
1.25 matthew 585: &Apache::lonxml::register('Apache::lonplot',
1.45 matthew 586: ('title','xlabel','ylabel','key','axis','label','curve',
587: 'xtics','ytics'));
1.29 matthew 588: push (@Apache::lonxml::namespace,'lonplot');
1.51 matthew 589: if ($target eq 'web' || $target eq 'tex') {
1.107 foxr 590: &get_attributes(\%Apache::lonplot::plot,\%gnuplot_defaults,$parstack,$safeeval,
1.17 matthew 591: $tagstack->[-1]);
1.20 matthew 592: } elsif ($target eq 'edit') {
1.47 matthew 593: $result .= &Apache::edit::tag_start($target,$token,'GnuPlot');
594: $result .= &edit_attributes($target,$token,\%gnuplot_defaults,
1.116 albertel 595: \@gnuplot_edit_order)
596: .&Apache::edit::end_row()
597: .&Apache::edit::start_spanning_row();
1.20 matthew 598: } elsif ($target eq 'modified') {
599: my $constructtag=&Apache::edit::get_new_args
1.47 matthew 600: ($token,$parstack,$safeeval,keys(%gnuplot_defaults));
1.20 matthew 601: if ($constructtag) {
602: $result = &Apache::edit::rebuild_tag($token);
603: }
1.4 matthew 604: }
1.21 matthew 605: return $result;
1.1 matthew 606: }
607:
1.47 matthew 608: sub end_gnuplot {
1.1 matthew 609: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
610: pop @Apache::lonxml::namespace;
1.4 matthew 611: &Apache::lonxml::deregister('Apache::lonplot',
612: ('title','xlabel','ylabel','key','axis','label','curve'));
613: my $result = '';
1.56 albertel 614: my $randnumber;
615: # need to call rand everytime start_script would evaluate, as the
616: # safe space rand number generator and the global rand generator
1.95 www 617: # are not separate
1.56 albertel 618: if ($target eq 'web' || $target eq 'tex' || $target eq 'grade' ||
619: $target eq 'answer') {
620: $randnumber=int(rand(1000));
621: }
1.51 matthew 622: if ($target eq 'web' || $target eq 'tex') {
1.21 matthew 623: &check_inputs(); # Make sure we have all the data we need
1.13 matthew 624: ##
625: ## Determine filename
1.4 matthew 626: my $tmpdir = '/home/httpd/perl/tmp/';
1.106 albertel 627: my $filename = $env{'user.name'}.'_'.$env{'user.domain'}.
1.69 matthew 628: '_'.time.'_'.$$.$randnumber.'_plot';
1.4 matthew 629: ## Write the plot description to the file
1.51 matthew 630: &write_gnuplot_file($tmpdir,$filename,$target);
1.113 www 631: $filename = &escape($filename);
1.4 matthew 632: ## return image tag for the plot
1.51 matthew 633: if ($target eq 'web') {
634: $result .= <<"ENDIMAGE";
1.114 albertel 635: <img src = "/cgi-bin/plot.$weboutputformat?file=$filename.data"
1.107 foxr 636: width = "$Apache::lonplot::plot{'width'}"
637: height = "$Apache::lonplot::plot{'height'}"
638: align = "$Apache::lonplot::plot{'align'}"
639: alt = "$Apache::lonplot::plot{'alttag'}" />
1.12 matthew 640: ENDIMAGE
1.51 matthew 641: } elsif ($target eq 'tex') {
1.107 foxr 642: &Apache::lonxml::debug(" gnuplot wid = $Apache::lonplot::plot{'width'}");
643: &Apache::lonxml::debug(" gnuplot ht = $Apache::lonplot::plot{'height'}");
1.91 albertel 644: #might be inside the safe space, register the URL for later
645: &Apache::lonxml::register_ssi("/cgi-bin/plot.gif?file=$filename.data&output=eps");
1.111 albertel 646: $result = "%DYNAMICIMAGE:$Apache::lonplot::plot{'width'}:$Apache::lonplot::plot{'height'}:$Apache::lonplot::plot{'texwidth'}\n";
1.109 foxr 647: $result .= '\graphicspath{{/home/httpd/perl/tmp/}}'."\n";
1.113 www 648: $result .= '\includegraphics[width='.$Apache::lonplot::plot{'texwidth'}.' mm]{'.&unescape($filename).'.eps}';
1.51 matthew 649: }
1.20 matthew 650: } elsif ($target eq 'edit') {
1.21 matthew 651: $result.=&Apache::edit::tag_end($target,$token);
1.4 matthew 652: }
1.1 matthew 653: return $result;
654: }
1.2 matthew 655:
1.45 matthew 656:
657: ##--------------------------------------------------------------- xtics
658: sub start_xtics {
659: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
660: my $result='';
1.51 matthew 661: if ($target eq 'web' || $target eq 'tex') {
1.45 matthew 662: &get_attributes(\%xtics,\%tic_defaults,$parstack,$safeeval,
663: $tagstack->[-1]);
664: } elsif ($target eq 'edit') {
665: $result .= &Apache::edit::tag_start($target,$token,'xtics');
666: $result .= &edit_attributes($target,$token,\%tic_defaults,
667: \@tic_edit_order);
668: } elsif ($target eq 'modified') {
669: my $constructtag=&Apache::edit::get_new_args
670: ($token,$parstack,$safeeval,keys(%tic_defaults));
671: if ($constructtag) {
672: $result = &Apache::edit::rebuild_tag($token);
673: }
674: }
675: return $result;
676: }
677:
678: sub end_xtics {
679: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
680: my $result = '';
1.51 matthew 681: if ($target eq 'web' || $target eq 'tex') {
1.45 matthew 682: } elsif ($target eq 'edit') {
683: $result.=&Apache::edit::tag_end($target,$token);
684: }
685: return $result;
686: }
687:
688: ##--------------------------------------------------------------- ytics
689: sub start_ytics {
690: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
691: my $result='';
1.51 matthew 692: if ($target eq 'web' || $target eq 'tex') {
1.45 matthew 693: &get_attributes(\%ytics,\%tic_defaults,$parstack,$safeeval,
694: $tagstack->[-1]);
695: } elsif ($target eq 'edit') {
696: $result .= &Apache::edit::tag_start($target,$token,'ytics');
697: $result .= &edit_attributes($target,$token,\%tic_defaults,
698: \@tic_edit_order);
699: } elsif ($target eq 'modified') {
700: my $constructtag=&Apache::edit::get_new_args
701: ($token,$parstack,$safeeval,keys(%tic_defaults));
702: if ($constructtag) {
703: $result = &Apache::edit::rebuild_tag($token);
704: }
705: }
706: return $result;
707: }
708:
709: sub end_ytics {
710: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
711: my $result = '';
1.51 matthew 712: if ($target eq 'web' || $target eq 'tex') {
1.45 matthew 713: } elsif ($target eq 'edit') {
714: $result.=&Apache::edit::tag_end($target,$token);
715: }
716: return $result;
717: }
718:
1.119 albertel 719: ##-----------------------------------------------------------------font
1.120 albertel 720: my %font_properties =
721: (
722: 'classic' => {
723: face => 'classic',
724: file => 'DejaVuSansMono-Bold',
725: printname => 'Helvetica',
1.121 albertel 726: tex_no_file => 1,
1.120 albertel 727: },
728: 'sans-serif' => {
729: face => 'sans-serif',
730: file => 'DejaVuSans',
731: printname => 'DejaVuSans',
732: },
733: 'serif' => {
734: face => 'serif',
735: file => 'DejaVuSerif',
736: printname => 'DejaVuSerif',
737: },
738: );
739:
1.119 albertel 740: sub get_font {
1.124 albertel 741: my ($target) = @_;
1.120 albertel 742: my ($size, $selected_font);
743:
1.119 albertel 744: if ( $Apache::lonplot::plot{'font'} =~ /^(small|medium|large)/) {
1.120 albertel 745: $selected_font = $font_properties{'classic'};
1.119 albertel 746: if ( $Apache::lonplot::plot{'font'} eq 'small') {
747: $size = '5';
748: } elsif ( $Apache::lonplot::plot{'font'} eq 'medium') {
749: $size = '9';
750: } elsif ( $Apache::lonplot::plot{'font'} eq 'large') {
1.126 albertel 751: $size = '11';
1.119 albertel 752: } else {
753: $size = '9';
754: }
755: } else {
1.122 albertel 756: $size = $Apache::lonplot::plot{'font'};
1.120 albertel 757: $selected_font = $font_properties{$Apache::lonplot::plot{'fontface'}};
1.119 albertel 758: }
1.124 albertel 759: if ($target eq 'tex' && defined($Apache::lonplot::plot{'texfont'})) {
1.146 foxr 760: # $selected_font = $font_properties{'classic'};
1.124 albertel 761: $size = $Apache::lonplot::plot{'texfont'};
762: }
1.120 albertel 763: return ($size, $selected_font);
1.119 albertel 764: }
1.45 matthew 765:
1.1 matthew 766: ##----------------------------------------------------------------- key
767: sub start_key {
768: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
769: my $result='';
1.51 matthew 770: if ($target eq 'web' || $target eq 'tex') {
1.17 matthew 771: &get_attributes(\%key,\%key_defaults,$parstack,$safeeval,
1.11 matthew 772: $tagstack->[-1]);
1.20 matthew 773: } elsif ($target eq 'edit') {
1.25 matthew 774: $result .= &Apache::edit::tag_start($target,$token,'Plot Key');
1.21 matthew 775: $result .= &edit_attributes($target,$token,\%key_defaults);
1.20 matthew 776: } elsif ($target eq 'modified') {
777: my $constructtag=&Apache::edit::get_new_args
1.24 matthew 778: ($token,$parstack,$safeeval,keys(%key_defaults));
1.20 matthew 779: if ($constructtag) {
780: $result = &Apache::edit::rebuild_tag($token);
781: }
1.4 matthew 782: }
1.1 matthew 783: return $result;
784: }
785:
786: sub end_key {
787: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
788: my $result = '';
1.51 matthew 789: if ($target eq 'web' || $target eq 'tex') {
1.20 matthew 790: } elsif ($target eq 'edit') {
1.21 matthew 791: $result.=&Apache::edit::tag_end($target,$token);
1.4 matthew 792: }
1.1 matthew 793: return $result;
794: }
1.21 matthew 795:
1.128 albertel 796: sub parse_label {
797: my ($target,$text) = @_;
798: my $parser=HTML::LCParser->new(\$text);
799: my $result;
800: while (my $token=$parser->get_token) {
801: if ($token->[0] eq 'S') {
802: if ($token->[1] eq 'sub') {
803: $result .= '_{';
804: } elsif ($token->[1] eq 'sup') {
805: $result .= '^{';
806: } else {
807: $result .= $token->[4];
808: }
809: } elsif ($token->[0] eq 'E') {
810: if ($token->[1] eq 'sub'
811: || $token->[1] eq 'sup') {
812: $result .= '}';
813: } else {
814: $result .= $token->[2];
815: }
816: } elsif ($token->[0] eq 'T') {
817: $result .= &replace_entities($target,$token->[1]);
818: }
819: }
820: return $result;
821: }
822:
1.143 foxr 823: #
824: # Note that there are severe restrictions on font selection in the
825: # ps driver now. later in life Gnuplot is supposed to support
826: # utf-8 fonts in the posts script driver. When this happens,
827: # the tex entries with comments that include the word <FIX>
828: # should be changed to print the correct glyphs rather than some
829: # approximation or fallback of what is intended.
1.128 albertel 830:
831: my %lookup =
1.137 foxr 832: ( # Greek alphabet:
1.139 foxr 833:
834: '(Alpha|#913)' => {'tex' => '{/Symbol A}', 'web' => "\x{391}"},
835: '(Beta|#914)' => {'tex' => '{/Symbol B}', 'web' => "\x{392}"},
836: '(Chi|#935)' => {'tex' => '{/Symbol C}', 'web' => "\x{3A7}"},
837: '(Delta|#916)' => {'tex' => '{/Symbol D}', 'web' => "\x{394}"},
838: '(Epsilon|#917)' => {'tex' => '{/Symbol E}', 'web' => "\x{395}"},
839: '(Phi|#934)' => {'tex' => '{/Symbol F}', 'web' => "\x{3A6}"},
840: '(Gamma|#915)' => {'tex' => '{/Symbol G}', 'web' => "\x{393}"},
841: '(Eta|#919)' => {'tex' => '{/Symbol H}', 'web' => "\x{397}"},
842: '(Iota|#921)' => {'tex' => '{/Symbol I}', 'web' => "\x{399}"},
843: '(Kappa|#922)' => {'tex' => '{/Symbol K}', 'web' => "\x{39A}"},
844: '(Lambda|#923)' => {'tex' => '{/Symbol L}', 'web' => "\x{39B}"},
845: '(Mu|#924)' => {'tex' => '{/Symbol M}', 'web' => "\x{39C}"},
846: '(Nu|#925)' => {'tex' => '{/Symbol N}', 'web' => "\x{39D}"},
847: '(Omicron|#927)' => {'tex' => '{/Symbol O}', 'web' => "\x{39F}"},
848: '(Pi|#928)' => {'tex' => '{/Symbol P}', 'web' => "\x{3A0}"},
849: '(Theta|#920)' => {'tex' => '{/Symbol Q}', 'web' => "\x{398}"},
850: '(Rho|#929)' => {'tex' => '{/Symbol R}', 'web' => "\x{3A1}"},
851: '(Sigma|#931)' => {'tex' => '{/Symbol S}', 'web' => "\x{3A3}"},
852: '(Tau|#932)' => {'tex' => '{/Symbol T}', 'web' => "\x{3A4}"},
853: '(Upsilon|#933)' => {'tex' => '{/Symbol U}', 'web' => "\x{3A5}"},
854: '(Omega|#937)' => {'tex' => '{/Symbol W}', 'web' => "\x{3A9}"},
855: '(Xi|#926)' => {'tex' => '{/Symbol X}', 'web' => "\x{39E}"},
856: '(Psi|#936)' => {'tex' => '{/Symbol Y}', 'web' => "\x{3A8}"},
857: '(Zeta|#918)' => {'tex' => '{/Symbol Z}', 'web' => "\x{396}"},
858: '(alpha|#945)' => {'tex' => '{/Symbol a}', 'web' => "\x{3B1}"},
859: '(beta|#946)' => {'tex' => '{/Symbol b}', 'web' => "\x{3B2}"},
860: '(chi|#967)' => {'tex' => '{/Symbol c}', 'web' => "\x{3C7}"},
861: '(delta|#948)' => {'tex' => '{/Symbol d}', 'web' => "\x{3B4}"},
862: '(epsilon|#949)' => {'tex' => '{/Symbol e}', 'web' => "\x{3B5}"},
863: '(phi|#966)' => {'tex' => '{/Symbol f}', 'web' => "\x{3C6}"},
864: '(gamma|#947)' => {'tex' => '{/Symbol g}', 'web' => "\x{3B3}"},
865: '(eta|#951)' => {'tex' => '{/Symbol h}', 'web' => "\x{3B7}"},
866: '(iota|#953)' => {'tex' => '{/Symbol i}', 'web' => "\x{3B9}"},
867: '(kappa|#954)' => {'tex' => '{/Symbol k}', 'web' => "\x{3BA}"},
868: '(lambda|#955)' => {'tex' => '{/Symbol k}', 'web' => "\x{3BB}"},
869: '(mu|#956)' => {'tex' => '{/Symbol m}', 'web' => "\x{3BC}"},
870: '(nu|#957)' => {'tex' => '{/Symbol n}', 'web' => "\x{3BD}"},
871: '(omicron|#959)' => {'tex' => '{/Symbol o}', 'web' => "\x{3BF}"},
872: '(pi|#960)' => {'tex' => '{/Symbol p}', 'web' => "\x{3C0}"},
873: '(theta|#952)' => {'tex' => '{/Symbol q}', 'web' => "\x{3B8}"},
874: '(rho|#961)' => {'tex' => '{/Symbol r}', 'web' => "\x{3C1}"},
875: '(sigma|#963)' => {'tex' => '{/Symbol s}', 'web' => "\x{3C3}"},
876: '(tau|#964)' => {'tex' => '{/Symbol t}', 'web' => "\x{3C4}"},
877: '(upsilon|#965)' => {'tex' => '{/Symbol u}', 'web' => "\x{3C5}"},
878: '(omega|#969)' => {'tex' => '{/Symbol w}', 'web' => "\x{3C9}"},
879: '(xi|#958)' => {'tex' => '{/Symbol x}', 'web' => "\x{3BE}"},
880: '(psi|#968)' => {'tex' => '{/Symbol y}', 'web' => "\x{3C8}"},
881: '(zeta|#950)' => {'tex' => '{/Symbol z}', 'web' => "\x{3B6}"},
882: '(thetasym|#977)' => {'tex' => '{/Symbol \165}', 'web' => "\x{3d1}"},
883: '(upsih|#978)' => {'tex' => '{/Symbol \241}', 'web' => "\x{3d2}"},
884: '(piv|#982)' => {'tex' => '{/Symbol \166}', 'web' => "\x{3d6}"},
1.137 foxr 885:
886:
887: # Punctuation:
888:
1.138 foxr 889: '(quot|#034)' => {'tex' => '\42', 'web' => '\42'},
890: '(amp|#038)' => {'tex' => '\46', 'web' => '\46'},
891: '(lt|#060)' => {'tex' => '\74', 'web' => '\74'},
892: '(gt|#062)' => {'tex' => '\76', 'web' => '\76'},
1.137 foxr 893: '#131' => {'tex' => '{/Symbol \246}', 'web' => "\x{192}"},
1.138 foxr 894: '#132' => {'tex' => '{/Text \271}', 'web' => "\x{201e}"},
895: '#133' => {'tex' => '{/Symbol \274}', 'web'=> "\x{2026}"},
896: '#134' => {'tex' => '{/Text \262}', 'web' => "\x{2020}"},
897: '#135' => {'tex' => '{/Text \263}', 'web' => "\x{2021}"},
898: '#136' => {'tex' => '\\\\^', 'web' => '\\\\^'},
1.143 foxr 899: '#137' => {'tex' => '%o', 'web' => "\x{2030}"}, # Per Mille <FIX>
900: '#138' => {'tex' => 'S', 'web' => "\x{160}"}, # S-Caron <FIX>
1.138 foxr 901: '#139' => {'tex' => '<', 'web' => '<'},
1.143 foxr 902: '#140' => {'tex' => 'AE', 'web' => "\x{152}"}, # AE ligature <FIX>
1.138 foxr 903: '#145' => {'tex' => '\140', 'web' => "\x{2018}"},
904: '#146' => {'tex' => '\47', 'web' => "\x{2019}"},
1.143 foxr 905: '#147' => {'tex' => '\140\140', 'web' => "\x{201c}"}, # Left " <FIX>
906: '#148' => {'tex' => '\47\47', 'web' => '\\"'}, # Right " <FIX>
1.138 foxr 907: '#149' => {'tex' => '{/Symbol \267}', 'web' => "\x{2022}"},
1.143 foxr 908: '#150' => {'tex' => '{/Text \55}', 'web' => "\x{2013}"}, # en dash
1.138 foxr 909: '#151' => {'tex' => '{/Symbol \55}', 'web' => "\x{2014}"}, # em dash
1.143 foxr 910: '#152' => {'tex' => '\\\\~', 'web' => '\\\\~'},
911: '#153' => {'tex' => '{/Symbol \324}', 'web' => "\x{2122}"}, # trademark
1.139 foxr 912:
913: # Accented letters, and other furreign language glyphs.
914:
1.138 foxr 915: '#154' => {'tex' => 's', 'web' => "\x{161}"}, # small s-caron no ps.
916: '#155' => {'tex' => '>', 'web' => '\76'}, # >
1.143 foxr 917: '#156' => {'tex' => '{/Text \366}', 'web' => "\x{153}"}, # oe ligature.<FIX>
918: '#159', => {'tex' => 'Y', 'web' => "\x{178}"}, # Y-umlaut - can't print <FIX>
1.138 foxr 919: '(nbsp|#160)' => {'tex' => ' ', 'web' => ' '}, # non breaking space.
920: '(iexcl|#161)' => {'tex' => '{/Text \241}', 'web' => "\x{a1}"}, # inverted !
921: '(cent|#162)' => {'tex' => '{/Text \242}', 'web' => "\x{a2}"}, # Cent currency.
1.142 foxr 922: '(pound|#163)' => {'tex' => '{/Text \243}', 'web' => "\x{a3}"}, # GB Pound currency.
1.143 foxr 923: '(curren|#164)' => {'tex' => '{/ZapfDingbats \161}','web' => "\x{a4}"}, # Generic currency symb. <FIX>
1.138 foxr 924: '(yen|#165)' => {'tex' => '{/Text \245}', 'web' => "\x{a5}"}, # Yen currency.
925: '(brvbar|#166)' => {'tex' => '{/Symbol \174}', 'web' => "\x{a6}"}, # Broken vert bar no print.
926: '(sect|#167)' => {'tex' => '{\247}', 'web' => "\x{a7}"}, # Section symbol.
927: '(uml|#168)' => {'tex' => '{\250}', 'web' => "\x{a8}"}, # 'naked' umlaut.
928: '(copy|#169)' => {'tex' => '{/Symbol \343}', 'web' => "\x{a9}"}, # Copyright symbol.
929: '(ordf|#170)' => {'tex' => '{/Text \343}', 'web' => "\x{aa}"}, # Feminine ordinal.
930: '(laquo|#171)' => {'tex' => '{/Text \253}', 'web' => "\x{ab}"}, # << quotes.
931: '(not|#172)' => {'tex' => '\254', 'web' => "\x{ac}"}, # Logical not.
1.143 foxr 932: '(shy|#173)' => {'tex' => '\255', 'web' => "\x{ad}"}, # soft hyphen.
1.138 foxr 933: '(reg|#174)' => {'tex' => '{/Symbol \342}', 'web' => "\x{ae}"}, # Registered tm.
1.143 foxr 934: '(macr|#175)' => {'tex' => '^{\255}', 'web' => "\x{af}"}, # 'naked' macron (overbar).
935: '(deg|#176)' => {'tex' => '{/Text \260}', 'web' => "\x{b0}"}, # Degree symbo..`
1.138 foxr 936: '(plusmn|#177)' => {'tex' => '{/Symbol \261}', 'web' => "\x{b1}"}, # +/- symbol.
937: '(sup2|#178)' => {'tex' => '^2', 'web' => "\x{b2}"}, # Superscript 2.
938: '(sup3|#179)' => {'tex' => '^3', 'web' => "\x{b3}"}, # Superscript 3.
1.143 foxr 939: '(acute|#180)' => {'tex' => '{/Text \222}', 'web' => "\x{b4}"}, # 'naked' acute accent.
1.138 foxr 940: '(micro|#181)' => {'tex' => '{/Symbol \155}', 'web' => "\x{b5}"}, # Micro (small mu).
941: '(para|#182)' => {'tex' => '{/Text \266}', 'web' => "\x{b6}"}, # Paragraph symbol.
1.143 foxr 942: '(middot|#183)' => {'tex' => '\267', 'web' => "\x{b7}"}, # middle dot
1.138 foxr 943: '(cedil|#184)' => {'tex' => '\233', 'web' => "\x{b8}"}, # 'naked' cedilla.
944: '(sup1|#185)' => {'tex' => '^1', 'web' => "\x{b9}"}, # superscript 1.
1.143 foxr 945: '(ordm|#186)' => {'tex' => '{\260}', 'web' => "\x{ba}"}, # masculine ordinal.
1.138 foxr 946: '(raquo|#187)', => {'tex' => '\273', 'web' => "\x{bb}"}, # Right angle quotes.
947: '(frac14|#188)' => {'tex' => '\274', 'web' => "\x{bc}"}, # 1/4.
948: '(frac12|#189)' => {'tex' => '\275', 'web' => "\x{bd}"}, # 1/2.
949: '(frac34|#190)' => {'tex' => '\276', 'web' => "\x{be}"}, # 3/4
950: '(iquest|#191)' => {'tex' => '{/Text \277}', 'web' => "\x{bf}"}, # Inverted ?
951: '(Agrave|#192)' => {'tex' => '\300', 'web' => "\x{c0}"}, # A Grave.
952: '(Aacute|#193)' => {'tex' => '\301', 'web' => "\x{c1}"}, # A Acute.
953: '(Acirc|#194)' => {'tex' => '\302', 'web' => "\x{c2}"}, # A Circumflex.
954: '(Atilde|#195)' => {'tex' => '\303', 'web' => "\x{c3}"}, # A tilde.
955: '(Auml|#196)' => {'tex' => '\304', 'web' => "\x{c4}"}, # A umlaut.
956: '(Aring|#197)' => {'tex' => '\305', 'web' => "\x{c5}"}, # A ring.
1.139 foxr 957: '(AElig|#198)' => {'tex' => '\306', 'web' => "\x{c6}"}, # AE ligature.
958: '(Ccedil|#199)' => {'tex' => '\307', 'web' => "\x{c7}"}, # C cedilla
959: '(Egrave|#200)' => {'tex' => '\310', 'web' => "\x{c8}"}, # E Accent grave.
960: '(Eacute|#201)' => {'tex' => '\311', 'web' => "\x{c9}"}, # E acute accent.
961: '(Ecirc|#202)' => {'tex' => '\312', 'web' => "\x{ca}"}, # E Circumflex.
962: '(Euml|#203)' => {'tex' => '\313', 'web' => "\x{cb}"}, # E umlaut.
963: '(Igrave|#204)' => {'tex' => '\314', 'web' => "\x{cc}"}, # I grave accent.
964: '(Iacute|#205)' => {'tex' => '\315', 'web' => "\x{cd}"}, # I acute accent.
965: '(Icirc|#206)' => {'tex' => '\316', 'web' => "\x{ce}"}, # I circumflex.
966: '(Iuml|#207)' => {'tex' => '\317', 'web' => "\x{cf}"}, # I umlaut.
967: '(ETH|#208)' => {'tex' => '\320', 'web' => "\x{d0}"}, # Icelandic Cap eth.
968: '(Ntilde|#209)' => {'tex' => '\321', 'web' => "\x{d1}"}, # Ntilde (enyan).
969: '(Ograve|#210)' => {'tex' => '\322', 'web' => "\x{d2}"}, # O accent grave.
970: '(Oacute|#211)' => {'tex' => '\323', 'web' => "\x{d3}"}, # O accent acute.
971: '(Ocirc|#212)' => {'tex' => '\324', 'web' => "\x{d4}"}, # O circumflex.
972: '(Otilde|#213)' => {'tex' => '\325', 'web' => "\x{d5}"}, # O tilde.
973: '(Ouml|#214)' => {'tex' => '\326', 'web' => "\x{d6}"}, # O umlaut.
974: '(times|#215)' => {'tex' => '\327', 'web' => "\x{d7}"}, # Times symbol.
975: '(Oslash|#216)' => {'tex' => '\330', 'web' => "\x{d8}"}, # O slash.
976: '(Ugrave|#217)' => {'tex' => '\331', 'web' => "\x{d9}"}, # U accent grave.
977: '(Uacute|#218)' => {'tex' => '\332', 'web' => "\x{da}"}, # U accent acute.
978: '(Ucirc|#219)' => {'tex' => '\333', 'web' => "\x{db}"}, # U circumflex.
979: '(Uuml|#220)' => {'tex' => '\334', 'web' => "\x{dc}"}, # U umlaut.
980: '(Yacute|#221)' => {'tex' => '\335', 'web' => "\x{dd}"}, # Y accent acute.
981: '(THORN|#222)' => {'tex' => '\336', 'web' => "\x{de}"}, # Icelandic thorn.
982: '(szlig|#223)' => {'tex' => '\337', 'web' => "\x{df}"}, # German sharfes s.
983: '(agrave|#224)' => {'tex' => '\340', 'web' => "\x{e0}"}, # a accent grave.
984: '(aacute|#225)' => {'tex' => '\341', 'web' => "\x{e1}"}, # a grave.
985: '(acirc|#226)' => {'tex' => '\342', 'web' => "\x{e2}"}, # a circumflex.
986: '(atilde|#227)' => {'tex' => '\343', 'web' => "\x{e3}"}, # a tilde.
987: '(auml|#228)' => {'tex' => '\344', 'web' => "\x{e4}"}, # a umlaut
988: '(aring|#229)' => {'tex' => '\345', 'web' => "\x{e5}"}, # a ring on top.
989: '(aelig|#230)' => {'tex' => '\346', 'web' => "\x{e6}"}, # ae ligature.
1.142 foxr 990: '(ccedil|#231)' => {'tex' => '\347', 'web' => "\x{e7}"}, # C cedilla
1.139 foxr 991: '(egrave|#232)' => {'tex' => '\350', 'web' => "\x{e8}"}, # e accent grave.
992: '(eacute|#233)' => {'tex' => '\351', 'web' => "\x{e9}"}, # e accent acute.
993: '(ecirc|#234)' => {'tex' => '\352', 'web' => "\x{ea}" }, # e circumflex.
994: '(euml|#235)' => {'tex' => '\353', 'web' => "\x{eb}"}, # e umlaut.
995: '(igrave|#236)' => {'tex' => '\354', 'web' => "\x{ec}"}, # i grave.
1.142 foxr 996: '(iacute|#237)' => {'tex' => '\355', 'web' => "\x{ed}"}, # i acute.
997: '(icirc|#238)' => {'tex' => '\356', 'web' => "\x{ee}"}, # i circumflex.
1.139 foxr 998: '(iuml|#239)' => {'tex' => '\357', 'web' => "\x{ef}"}, # i umlaut.
999: '(eth|#240)' => {'tex' => '\360', 'web' => "\x{f0}"}, # Icelandic eth.
1000: '(ntilde|#241)' => {'tex' => '\361', 'web' => "\x{f1}"}, # n tilde.
1001: '(ograve|#242)' => {'tex' => '\362', 'web' => "\x{f2}"}, # o grave.
1002: '(oacute|#243)' => {'tex' => '\363', 'web' => "\x{f3}"}, # o acute.
1.143 foxr 1003: '(ocirc|#244)' => {'tex' => '\364', 'web' => "\x{f4}"}, # o circumflex.
1.139 foxr 1004: '(otilde|#245)' => {'tex' => '\365', 'web' => "\x{f5}"}, # o tilde.
1005: '(ouml|#246)' => {'tex' => '\366', 'web' => "\x{f6}"}, # o umlaut.
1006: '(divide|#247)' => {'tex' => '\367', 'web' => "\x{f7}"}, # division symbol
1007: '(oslash|#248)' => {'tex' => '\370', 'web' => "\x{f8}"}, # o slashed.
1008: '(ugrave|#249)' => {'tex' => '\371', 'web' => "\x{f9}"}, # u accent grave.
1009: '(uacute|#250)' => {'tex' => '\372', 'web' => "\x{fa}"}, # u acute.
1010: '(ucirc|#251)' => {'tex' => '\373', 'web' => "\x{fb}"}, # u circumflex.
1011: '(uuml|#252)' => {'tex' => '\374', 'web' => "\x{fc}"}, # u umlaut.
1012: '(yacute|#253)' => {'tex' => '\375', 'web' => "\x{fd}"}, # y acute accent.
1013: '(thorn|#254)' => {'tex' => '\376', 'web' => "\x{fe}"}, # small thorn (icelandic).
1014: '(yuml|#255)' => {'tex' => '\377', 'web' => "\x{ff}"}, # y umlaut.
1015:
1016: # Latin extended A entities:
1017:
1.143 foxr 1018: '(OElig|#338)' => {'tex' => '{/Text \326}', 'web' => "\x{152}"}, # OE ligature.
1019: '(oelig|#339)' => {'tex' => '{/Text \366}', 'web' => "\x{153}"}, # oe ligature.
1.139 foxr 1020: '(Scaron|#352)' => {'tex' => 'S', 'web' => "\x{160}"}, # S caron no printable.
1021: '(scaron|#353)' => {'tex' => 's', 'web' => "\x{161}"}, # s caron no printable.
1022: '(Yuml|#376)' => {'tex' => 'Y', 'web' => "\x{178}"}, # Y umlaut - no printable.
1023:
1024: # Latin extended B.
1025:
1.143 foxr 1026: '(fnof|#402)' => {'tex' =>'{/Symbol \246}', 'web' => "\x{192}"}, # f with little hook.
1.139 foxr 1027:
1.140 foxr 1028: # Standalone accents:
1.139 foxr 1029:
1030: '(circ|#710)' => {'tex' => '^', 'web' => '^'}, # circumflex.
1031: '(tilde|#732)' => {'tex' => '~', 'web' => '~'}, # tilde.
1032:
1.140 foxr 1033: # General punctuation. We're not able to make a distinction between
1034: # the various length spacings in the print version. (e.g. en/em/thin).
1035: # the various joiners will be empty strings in the print version too.
1036:
1037:
1038: '(ensp|#8194)' => {'tex' => ' ', 'web' => "\x{2002}"}, # en space.
1039: '(emsp|#8195)' => {'tex' => ' ', 'web' => "\x{2003}"}, # em space.
1040: '(thinsp|#8201)' => {'tex' => ' ', 'web' => "\x{2009}"}, # thin space.
1.144 foxr 1041: '(zwnj|#8204)' => {'tex' => ' ', 'web' => "\x{200c}"}, # Zero width non joiner.
1042: '(zwj|#8205)' => {'tex' => ' ', 'web' => "\x{200d}"}, # Zero width joiner.
1043: '(lrm|#8206)' => {'tex' => ' ', 'web' => "\x{200e}"}, # Left to right mark
1044: '(rlm|#8207)' => {'tex' => ' ', 'web' => "\x{200f}"}, # right to left mark.
1.140 foxr 1045: '(ndash|#8211)' => {'tex' => '{/Text \55}', 'web' => "\x{2013}"}, # en dash.
1046: '(mdash|#8212)' => {'tex' => '{/Symbol \55}', 'web' => "\x{2014}"}, # em dash.
1047: '(lsquo|#8216)' => {'tex' => '{/Text \140}', 'web' => "\x{2018}"}, # Left single quote.
1.144 foxr 1048: '(rsquo|#8217)' => {'tex' => '\47', 'web' => "\x{2019}"}, # Right single quote.
1049: '(sbquo|#8218)' => {'tex' => '\54', 'web' => "\x{201a}"}, # Single low-9 quote.
1050: '(ldquo|#8220)' => {'tex' => '\42', 'web' => "\x{201c}"}, # Left double quote.
1051: '(rdquo|#8221)' => {'tex' => '\42', 'web' => "\x{201d}"}, # Right double quote.
1052: '(bdquo|#8222)' => {'tex' => ',', 'web' => "\x{201e}"}, # Double low-9 quote.
1053: '(dagger|#8224)' => {'tex' => '+', 'web' => "\x{2020}"}, # Is this a dagger I see before me now?
1.145 foxr 1054: '(Dagger|#8225)' => {'tex' => '\261', 'web' => "\x{2021}"}, # it's handle pointing towards my heart?
1.140 foxr 1055: '(bull|#8226)' => {'tex' => '\267', 'web' => "\x{2022}"}, # Bullet.
1.144 foxr 1056: '(hellep|#8230)' => {'tex' => '{/Symbol \274}', 'web' => "\x{2026}"}, # Ellipses.
1057: '(permil|#8240)' => {'tex' => '%_o', 'web' => "\x{2031}"}, # Per mille.
1.140 foxr 1058: '(prime|#8242)' => {'tex' => '\264', 'web' => "\x{2032}"}, # Prime.
1059: '(Prime|#8243)' => {'tex' => '{/Symbol \262}', 'web' => "\x{2033}"}, # double prime.
1.144 foxr 1060: '(lsaquo|#8249)' => {'tex' => '<', 'web' => "\x{2039}"}, # < quote.
1061: '(rsaquo|#8250)' => {'tex' => '\74', 'web' => "\x{203a}"}, # > quote.
1.140 foxr 1062: '(oline|#8254)' => {'tex' => '{/Symbol \140}', 'web' => "\x{203e}"}, # Overline.
1063: '(frasl|#8260)' => {'tex' => '/', 'web' => "\x{2044}"}, # Fraction slash.
1.144 foxr 1064: '(euro|#8364)' => {'tex' => '{/Symbol \240}', 'web' => "\x{20ac}"}, # Euro currency.
1.140 foxr 1065:
1066: # Letter like symbols.
1067:
1068: '(weierp|#8472)' => {'tex' => '{/Symbol \303}', 'web' => "\x{2118}"}, # Power set symbol
1069: '(image|#8465)' => {'tex' => '{/Symbol \301}', 'web' => "\x{2111}"}, # Imaginary part
1070: '(real|#8476)' => {'tex' => '{/Symbol \302}', 'web' => "\x{211c}"}, # Real part.
1071: '(trade|#8482)' => {'tex' => '{/Symbol \344}', 'web' => "\x{2122}"}, # trademark symbol.
1072: '(alefsym|#8501)' => {'tex' => '{/Symbol \300}', 'web' => "\x{2135}"}, # Hebrew alef.
1073:
1074: # Arrows of various types and directions.
1075: '(larr|#8592)' => {'tex' => '{/Symbol \254}', 'web' => "\x{2190}"}, # <--
1.142 foxr 1076: '(uarr|#8593)' => {'tex' => '{/Symbol \255}', 'web' => "\x{2191}"}, # up arrow.
1.140 foxr 1077: '(rarr|#8594)' => {'tex' => '{/Symbol \256}', 'web' => "\x{2192}"}, # -->
1078: '(darr|#8595)' => {'tex' => '{/Symbol \257}', 'web' => "\x{2193}"}, # down arrow.
1079: '(harr|#8596)' => {'tex' => '{/Symbol \253}', 'web' => "\x{2194}"}, # <-->
1080: '(crarr|#8629)' => {'tex' => '{/Symbol \277}', 'web' => "\x{21b5}"}, # corner arrow down and right.
1081: '(lArr|#8656)' => {'tex' => '{/Symbol \334}', 'web' => "\x{21d0}"}, # <==
1082: '(uArr|#8657)' => {'tex' => '{/Symbol \335}', 'web' => "\x{21d1}"}, # Up double arrow.
1083: '(rArr|#8658)' => {'tex' => '{/Symbol \336}', 'web' => "\x{21d2}"}, # ==>
1084: '(dArr|#8659)' => {'tex' => '{/Symbol \337}', 'web' => "\x{21d3}"}, # Down double arrow.
1085: '(hArr|#8660)' => {'tex' => '{/Symbol \333}', 'web' => "\x{21d4}"}, # <==>
1086:
1087: # Mathematical operators. For some of these we do the best we can in printing.
1088:
1089: '(forall|#8704)' => {'tex' => '{/Symbol \42}', 'web' => "\x{2200}"}, # For all.
1090: '(part|#8706)' => {'tex' => '{/Symbol d}', 'web' => "\x{2202}"}, # partial derivative
1091: '(exist|#8707)' => {'tex' => '{/Symbol \44}', 'web' => "\x{2203}"}, # There exists.
1092: '(empty|#8709)' => {'tex' => '{/Symbol \306}', 'web' => "\x{2205}"}, # Null set.
1093: '(nabla|#8711)' => {'tex' => '{/Symbol \321}', 'web' => "\x{2207}"}, # Gradient e.g.
1094: '(isin|#8712)' => {'tex' => '{/Symbol \316}', 'web' => "\x{2208}"}, # Element of the set.
1.145 foxr 1095: '(notin|#8713)' => {'tex' => '{/Symbol \317}', 'web' => "\x{2209}"}, # Not an element of
1.140 foxr 1096: '(ni|#8715)' => {'tex' => '{/Symbol \47}', 'web' => "\x{220b}"}, # Contains as a member
1097: '(prod|#8719)' => {'tex' => '{/Symbol \325}', 'web' => "\x{220f}"}, # Product
1098: '(sum|#8721)' => {'tex' => '{/Symbol \345}', 'web' => "\x{2211}"}, # Sum of.
1.145 foxr 1099: '(minus|#8722)' => {'tex' => '{/Symbol \55}', 'web' => "\x{2212}"}, # - sign.
1.140 foxr 1100: '(lowast|#8727)' => {'tex' => '*', 'web' => "\x{2217}"}, # *
1101: '(radic|#8730)' => {'tex' => '{/Symbol \326}', 'web' => "\x{221a}"}, # Square root.
1102: '(prop|#8733)' => {'tex' => '{/Symbol \265}', 'web' => "\x{221d}"}, # Proportional to.
1103: '(infin|#8734)' => {'tex' => '{/Symbol \245}', 'web' => "\x{221e}"}, # Infinity.
1104: '(ang|#8736)' => {'tex' => '{/Symbol \320}', 'web' => "\x{2220}"}, # Angle .
1105: '(and|#8743)' => {'tex' => '{/Symbol \331}', 'web' => "\x{2227}"}, # Logical and.
1106: '(or|#8744)' => {'tex' => '{/Symbol \332}', 'web' => "\x{2228}"}, # Logical or.
1107: '(cap|#8745)' => {'tex' => '{/Symbol \307}', 'web' => "\x{2229}"}, # Set intersection.
1108: '(cup|#8746)' => {'tex' => '{/Symbol \310}', 'web' => "\x{222a}"}, # Set union.
1109: '(int|8747)' => {'tex' => '{/Symbol \362}', 'web' => "\x{222b}"}, # Integral.
1.145 foxr 1110:
1111: # Some gnuplot guru will have to explain to me why the next three
1112: # require the extra slashes... else they print very funkily.
1113:
1114: '(there4|#8756)' => {'tex' => '{/Symbol \\\134}', 'web' => "\x{2234}"}, # Therefore triple dots.
1115: '(sim|#8764)' => {'tex' => '\\\176', 'web' => "\x{223c}"}, # Simlar to.
1116: '(cong|#8773)' => {'tex' => '{/Symbol \\\100}','web' => "\x{2245}"}, # Congruent to/with.
1117:
1118: '(asymp|#8776)' => {'tex' => '{/Symbol \273}', 'web' => "\x{2248}"}, # Asymptotic to.
1.141 foxr 1119: '(ne|#8800)' => {'tex' => '{/Symbol \271}', 'web' => "\x{2260}"}, # not equal to.
1120: '(equiv|#8801)' => {'tex' => '{/Symbol \272}', 'web' => "\x{2261}"}, # Equivalent to.
1121: '(le|8804)' => {'tex' => '{/Symbol \243}', 'web' => "\x{2264}"}, # Less than or equal to.
1122: '(ge|8805)' => {'tex' => '{/Symbol \263}', 'web' => "\x{2265}"}, # Greater than or equal to
1123: '(sub|8834)' => {'tex' => '{/Symbol \314}', 'web' => "\x{2282}"}, # Subset of.
1124: '(sup|8835)' => {'tex' => '{/Symbol \311}', 'web' => "\x{2283}"}, # Super set of.
1125: '(nsub|8836)' => {'tex' => '{/Symbol \313}', 'web' => "\x{2284}"}, # not subset of.
1126: '(sube|8838)' => {'tex' => '{/Symbol \315}', 'web' => "\x{2286}"}, # Subset or equal.
1127: '(supe|8839)' => {'tex' => '{/Symbol \312}', 'web' => "\x{2287}"}, # Superset or equal
1128: '(oplus|8853)' => {'tex' => '{/Symbol \305}', 'web' => "\x{2295}"}, # O with plus inside
1129: '(otimes|8855)' => {'tex' => '{/Symbol \304}', 'web' => "\x{2297}"}, # O with times.
1130: '(perp|8869)' => {'tex' => '{/Symbol \136}', 'web' => "\x{22a5}"}, # Perpendicular.
1131: '(sdot|8901)' => {'tex' => '{/Symbol \227}', 'web' => "\x{22c5}"}, # Dot operator.
1132:
1133: # Misc. technical symbols:
1134:
1135: '(lceil|8698)' => {'tex' => '{/Symbol \351}', 'web' => "\x{2308}"}, # Left ceiling.
1136: '(rceil|8969)' => {'tex' => '{/Symbol \371}', 'web' => "\x{2309}"}, # Right ceiling.
1137: '(lfloor|8970)' => {'tex' => '{/Symbol \353}', 'web' => "\x{230a}"}, # Left floor.
1138: '(rfloor|8971)' => {'tex' => '{/Symbol \373}', 'web' => "\x{230b}"}, # Right floor.
1.145 foxr 1139:
1140: # The gnuplot png font evidently does not have the big angle brackets at
1141: # positions 0x2329, 0x232a so use ordinary brackets.
1142:
1143: '(lang|9001)' => {'tex' => '{/Symbol \341}', 'web' => '<'}, # Left angle bracket.
1144: '(rang|9002)' => {'tex' => '{/Symbol \361}', 'web' => '>'}, # Right angle bracket.
1.141 foxr 1145:
1146: # Gemoetric shapes.
1147:
1148: '(loz|9674)' => {'tex' => '{/Symbol \340}', 'web' => "\x{25ca}"}, # Lozenge.
1149:
1150: # Misc. symbols
1151:
1152: '(spades|9824)' => {'tex' => '{/Symbol \252}', 'web' => "\x{2660}"},
1153: '(clubs|9827)' => {'tex' => '{/Symbol \247}', 'web' => "\x{2663}"},
1154: '(hearts|9829)' => {'tex' => '{/Symbol \251}', 'web' => "\x{2665}"},
1155: '(diams|9830)' => {'tex' => '{/Symbol \250}', 'web' => "\x{2666}"}
1.139 foxr 1156:
1.133 albertel 1157: );
1158:
1.128 albertel 1159:
1160: sub replace_entities {
1161: my ($target,$text) = @_;
1162: $text =~ s{([_^~\{\}]|\\\\)}{\\\\$1}g;
1163: while (my ($re, $replace) = each(%lookup)) {
1.137 foxr 1164: my $repl = $replace->{$target};
1.128 albertel 1165: $text =~ s/&$re;/$replace->{$target}/g;
1166: }
1167: $text =~ s{(&)}{\\\\$1}g;
1168: return $text;
1.127 albertel 1169: }
1170:
1.1 matthew 1171: ##------------------------------------------------------------------- title
1172: sub start_title {
1173: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1174: my $result='';
1.51 matthew 1175: if ($target eq 'web' || $target eq 'tex') {
1.112 albertel 1176: $title = &Apache::lonxml::get_all_text("/title",$parser,$style);
1.58 matthew 1177: $title=&Apache::run::evaluate($title,$safeeval,$$parstack[-1]);
1.49 matthew 1178: $title =~ s/\n/ /g;
1.32 matthew 1179: if (length($title) > $max_str_len) {
1180: $title = substr($title,0,$max_str_len);
1181: }
1.128 albertel 1182: $title = &parse_label($target,$title);
1.20 matthew 1183: } elsif ($target eq 'edit') {
1.25 matthew 1184: $result.=&Apache::edit::tag_start($target,$token,'Plot Title');
1.112 albertel 1185: my $text=&Apache::lonxml::get_all_text("/title",$parser,$style);
1.116 albertel 1186: $result.=&Apache::edit::editline('',$text,'',60);
1.20 matthew 1187: } elsif ($target eq 'modified') {
1.42 matthew 1188: $result.=&Apache::edit::rebuild_tag($token);
1.93 albertel 1189: $result.=&Apache::edit::modifiedfield("/title",$parser);
1.4 matthew 1190: }
1.1 matthew 1191: return $result;
1192: }
1193:
1194: sub end_title {
1195: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1196: my $result = '';
1.51 matthew 1197: if ($target eq 'web' || $target eq 'tex') {
1.20 matthew 1198: } elsif ($target eq 'edit') {
1.27 matthew 1199: $result.=&Apache::edit::tag_end($target,$token);
1.4 matthew 1200: }
1.1 matthew 1201: return $result;
1202: }
1203: ##------------------------------------------------------------------- xlabel
1204: sub start_xlabel {
1205: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1206: my $result='';
1.51 matthew 1207: if ($target eq 'web' || $target eq 'tex') {
1.112 albertel 1208: $xlabel = &Apache::lonxml::get_all_text("/xlabel",$parser,$style);
1.58 matthew 1209: $xlabel=&Apache::run::evaluate($xlabel,$safeeval,$$parstack[-1]);
1.49 matthew 1210: $xlabel =~ s/\n/ /g;
1.32 matthew 1211: if (length($xlabel) > $max_str_len) {
1212: $xlabel = substr($xlabel,0,$max_str_len);
1213: }
1.128 albertel 1214: $xlabel = &parse_label($target,$xlabel);
1.20 matthew 1215: } elsif ($target eq 'edit') {
1.25 matthew 1216: $result.=&Apache::edit::tag_start($target,$token,'Plot Xlabel');
1.112 albertel 1217: my $text=&Apache::lonxml::get_all_text("/xlabel",$parser,$style);
1.116 albertel 1218: $result.=&Apache::edit::editline('',$text,'',60);
1.20 matthew 1219: } elsif ($target eq 'modified') {
1.42 matthew 1220: $result.=&Apache::edit::rebuild_tag($token);
1.93 albertel 1221: $result.=&Apache::edit::modifiedfield("/xlabel",$parser);
1.4 matthew 1222: }
1.1 matthew 1223: return $result;
1224: }
1225:
1226: sub end_xlabel {
1227: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1228: my $result = '';
1.51 matthew 1229: if ($target eq 'web' || $target eq 'tex') {
1.20 matthew 1230: } elsif ($target eq 'edit') {
1.27 matthew 1231: $result.=&Apache::edit::tag_end($target,$token);
1.4 matthew 1232: }
1.1 matthew 1233: return $result;
1234: }
1.21 matthew 1235:
1.1 matthew 1236: ##------------------------------------------------------------------- ylabel
1237: sub start_ylabel {
1238: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1239: my $result='';
1.51 matthew 1240: if ($target eq 'web' || $target eq 'tex') {
1.112 albertel 1241: $ylabel = &Apache::lonxml::get_all_text("/ylabel",$parser,$style);
1.58 matthew 1242: $ylabel = &Apache::run::evaluate($ylabel,$safeeval,$$parstack[-1]);
1.49 matthew 1243: $ylabel =~ s/\n/ /g;
1.32 matthew 1244: if (length($ylabel) > $max_str_len) {
1245: $ylabel = substr($ylabel,0,$max_str_len);
1246: }
1.128 albertel 1247: $ylabel = &parse_label($target,$ylabel);
1.20 matthew 1248: } elsif ($target eq 'edit') {
1.25 matthew 1249: $result .= &Apache::edit::tag_start($target,$token,'Plot Ylabel');
1.112 albertel 1250: my $text = &Apache::lonxml::get_all_text("/ylabel",$parser,$style);
1.116 albertel 1251: $result .= &Apache::edit::editline('',$text,'',60);
1.20 matthew 1252: } elsif ($target eq 'modified') {
1.42 matthew 1253: $result.=&Apache::edit::rebuild_tag($token);
1.93 albertel 1254: $result.=&Apache::edit::modifiedfield("/ylabel",$parser);
1.4 matthew 1255: }
1.1 matthew 1256: return $result;
1257: }
1258:
1259: sub end_ylabel {
1260: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1261: my $result = '';
1.51 matthew 1262: if ($target eq 'web' || $target eq 'tex') {
1.20 matthew 1263: } elsif ($target eq 'edit') {
1.27 matthew 1264: $result.=&Apache::edit::tag_end($target,$token);
1.4 matthew 1265: }
1.1 matthew 1266: return $result;
1267: }
1.21 matthew 1268:
1.1 matthew 1269: ##------------------------------------------------------------------- label
1270: sub start_label {
1271: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1272: my $result='';
1.51 matthew 1273: if ($target eq 'web' || $target eq 'tex') {
1.17 matthew 1274: my %label;
1275: &get_attributes(\%label,\%label_defaults,$parstack,$safeeval,
1.11 matthew 1276: $tagstack->[-1]);
1.112 albertel 1277: my $text = &Apache::lonxml::get_all_text("/label",$parser,$style);
1.58 matthew 1278: $text = &Apache::run::evaluate($text,$safeeval,$$parstack[-1]);
1.49 matthew 1279: $text =~ s/\n/ /g;
1.32 matthew 1280: $text = substr($text,0,$max_str_len) if (length($text) > $max_str_len);
1.128 albertel 1281: $label{'text'} = &parse_label($target,$text);
1.17 matthew 1282: push(@labels,\%label);
1.20 matthew 1283: } elsif ($target eq 'edit') {
1.25 matthew 1284: $result .= &Apache::edit::tag_start($target,$token,'Plot Label');
1.21 matthew 1285: $result .= &edit_attributes($target,$token,\%label_defaults);
1.112 albertel 1286: my $text = &Apache::lonxml::get_all_text("/label",$parser,$style);
1.39 matthew 1287: $result .= &Apache::edit::end_row().
1288: &Apache::edit::start_spanning_row().
1.63 albertel 1289: &Apache::edit::editline('',$text,'',60);
1.20 matthew 1290: } elsif ($target eq 'modified') {
1.42 matthew 1291: &Apache::edit::get_new_args
1.24 matthew 1292: ($token,$parstack,$safeeval,keys(%label_defaults));
1.42 matthew 1293: $result.=&Apache::edit::rebuild_tag($token);
1.93 albertel 1294: $result.=&Apache::edit::modifiedfield("/label",$parser);
1.4 matthew 1295: }
1.1 matthew 1296: return $result;
1297: }
1298:
1299: sub end_label {
1300: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1301: my $result = '';
1.51 matthew 1302: if ($target eq 'web' || $target eq 'tex') {
1.20 matthew 1303: } elsif ($target eq 'edit') {
1.21 matthew 1304: $result.=&Apache::edit::tag_end($target,$token);
1.4 matthew 1305: }
1.1 matthew 1306: return $result;
1307: }
1308:
1309: ##------------------------------------------------------------------- curve
1310: sub start_curve {
1311: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1312: my $result='';
1.25 matthew 1313: &Apache::lonxml::register('Apache::lonplot',('function','data'));
1314: push (@Apache::lonxml::namespace,'curve');
1.51 matthew 1315: if ($target eq 'web' || $target eq 'tex') {
1.17 matthew 1316: my %curve;
1317: &get_attributes(\%curve,\%curve_defaults,$parstack,$safeeval,
1.11 matthew 1318: $tagstack->[-1]);
1.17 matthew 1319: push (@curves,\%curve);
1.20 matthew 1320: } elsif ($target eq 'edit') {
1.26 matthew 1321: $result .= &Apache::edit::tag_start($target,$token,'Curve');
1.60 matthew 1322: $result .= &edit_attributes($target,$token,\%curve_defaults,
1.116 albertel 1323: \@curve_edit_order)
1324: .&Apache::edit::end_row()
1325: .&Apache::edit::start_spanning_row();
1326:
1.20 matthew 1327: } elsif ($target eq 'modified') {
1328: my $constructtag=&Apache::edit::get_new_args
1.35 matthew 1329: ($token,$parstack,$safeeval,keys(%curve_defaults));
1.20 matthew 1330: if ($constructtag) {
1331: $result = &Apache::edit::rebuild_tag($token);
1332: }
1.4 matthew 1333: }
1.1 matthew 1334: return $result;
1335: }
1336:
1337: sub end_curve {
1338: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1339: my $result = '';
1.25 matthew 1340: pop @Apache::lonxml::namespace;
1341: &Apache::lonxml::deregister('Apache::lonplot',('function','data'));
1.51 matthew 1342: if ($target eq 'web' || $target eq 'tex') {
1.20 matthew 1343: } elsif ($target eq 'edit') {
1.21 matthew 1344: $result.=&Apache::edit::tag_end($target,$token);
1.4 matthew 1345: }
1.1 matthew 1346: return $result;
1347: }
1.21 matthew 1348:
1.1 matthew 1349: ##------------------------------------------------------------ curve function
1350: sub start_function {
1351: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1352: my $result='';
1.51 matthew 1353: if ($target eq 'web' || $target eq 'tex') {
1.17 matthew 1354: if (exists($curves[-1]->{'data'})) {
1.85 matthew 1355: &Apache::lonxml::warning
1356: ('Use of the <b>curve function</b> tag precludes use of '.
1357: ' the <b>curve data</b> tag. '.
1358: 'The curve data tag will be omitted in favor of the '.
1359: 'curve function declaration.');
1.17 matthew 1360: delete $curves[-1]->{'data'} ;
1361: }
1.112 albertel 1362: my $function = &Apache::lonxml::get_all_text("/function",$parser,
1363: $style);
1.58 matthew 1364: $function = &Apache::run::evaluate($function,$safeeval,$$parstack[-1]);
1.147 ! www 1365: $function=~s/\^/\*\*/gs;
1.58 matthew 1366: $curves[-1]->{'function'} = $function;
1.20 matthew 1367: } elsif ($target eq 'edit') {
1.37 matthew 1368: $result .= &Apache::edit::tag_start($target,$token,'Gnuplot compatible curve function');
1.112 albertel 1369: my $text = &Apache::lonxml::get_all_text("/function",$parser,$style);
1.116 albertel 1370: $result .= &Apache::edit::editline('',$text,'',60);
1.20 matthew 1371: } elsif ($target eq 'modified') {
1.42 matthew 1372: $result.=&Apache::edit::rebuild_tag($token);
1.93 albertel 1373: $result.=&Apache::edit::modifiedfield("/function",$parser);
1.4 matthew 1374: }
1.1 matthew 1375: return $result;
1376: }
1377:
1378: sub end_function {
1379: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1380: my $result = '';
1.51 matthew 1381: if ($target eq 'web' || $target eq 'tex') {
1.20 matthew 1382: } elsif ($target eq 'edit') {
1.26 matthew 1383: $result .= &Apache::edit::end_table();
1.4 matthew 1384: }
1.1 matthew 1385: return $result;
1386: }
1.21 matthew 1387:
1.1 matthew 1388: ##------------------------------------------------------------ curve data
1389: sub start_data {
1390: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1391: my $result='';
1.51 matthew 1392: if ($target eq 'web' || $target eq 'tex') {
1.17 matthew 1393: if (exists($curves[-1]->{'function'})) {
1.85 matthew 1394: &Apache::lonxml::warning
1395: ('Use of the <b>curve function</b> tag precludes use of '.
1396: ' the <b>curve data</b> tag. '.
1397: 'The curve function tag will be omitted in favor of the '.
1398: 'curve data declaration.');
1.17 matthew 1399: delete($curves[-1]->{'function'});
1400: }
1.112 albertel 1401: my $datatext = &Apache::lonxml::get_all_text("/data",$parser,$style);
1.58 matthew 1402: $datatext=&Apache::run::evaluate($datatext,$safeeval,$$parstack[-1]);
1.40 matthew 1403: # Deal with cases where we're given an array...
1404: if ($datatext =~ /^\@/) {
1405: $datatext = &Apache::run::run('return "'.$datatext.'"',
1406: $safeeval,1);
1407: }
1.49 matthew 1408: $datatext =~ s/\s+/ /g;
1.17 matthew 1409: # Need to do some error checking on the @data array -
1410: # make sure it's all numbers and make sure each array
1411: # is of the same length.
1412: my @data;
1.35 matthew 1413: if ($datatext =~ /,/) { # comma deliminated
1.17 matthew 1414: @data = split /,/,$datatext;
1.95 www 1415: } else { # Assume it's space separated.
1.17 matthew 1416: @data = split / /,$datatext;
1417: }
1418: for (my $i=0;$i<=$#data;$i++) {
1419: # Check that it's non-empty
1.19 matthew 1420: if (! defined($data[$i])) {
1421: &Apache::lonxml::warning(
1.85 matthew 1422: 'undefined curve data value. Replacing with '.
1.19 matthew 1423: ' pi/e = 1.15572734979092');
1424: $data[$i] = 1.15572734979092;
1425: }
1.17 matthew 1426: # Check that it's a number
1.19 matthew 1427: if (! &$real_test($data[$i]) & ! &$int_test($data[$i])) {
1428: &Apache::lonxml::warning(
1.85 matthew 1429: 'Bad curve data value of '.$data[$i].' Replacing with '.
1.19 matthew 1430: ' pi/e = 1.15572734979092');
1431: $data[$i] = 1.15572734979092;
1432: }
1.17 matthew 1433: }
1.35 matthew 1434: # complain if the number of data points is not the same as
1435: # in previous sets of data.
1.36 matthew 1436: if (($curves[-1]->{'data'}) && ($#data != $#{@{$curves[-1]->{'data'}->[0]}})){
1.35 matthew 1437: &Apache::lonxml::warning
1438: ('Number of data points is not consistent with previous '.
1439: 'number of data points');
1440: }
1.17 matthew 1441: push @{$curves[-1]->{'data'}},\@data;
1.20 matthew 1442: } elsif ($target eq 'edit') {
1.37 matthew 1443: $result .= &Apache::edit::tag_start($target,$token,'Comma or space deliminated curve data');
1.112 albertel 1444: my $text = &Apache::lonxml::get_all_text("/data",$parser,$style);
1.116 albertel 1445: $result .= &Apache::edit::editline('',$text,'',60);
1.20 matthew 1446: } elsif ($target eq 'modified') {
1.42 matthew 1447: $result.=&Apache::edit::rebuild_tag($token);
1.93 albertel 1448: $result.=&Apache::edit::modifiedfield("/data",$parser);
1.4 matthew 1449: }
1.1 matthew 1450: return $result;
1451: }
1452:
1453: sub end_data {
1454: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1455: my $result = '';
1.51 matthew 1456: if ($target eq 'web' || $target eq 'tex') {
1.20 matthew 1457: } elsif ($target eq 'edit') {
1.26 matthew 1458: $result .= &Apache::edit::end_table();
1.4 matthew 1459: }
1.1 matthew 1460: return $result;
1461: }
1462:
1463: ##------------------------------------------------------------------- axis
1464: sub start_axis {
1465: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1466: my $result='';
1.51 matthew 1467: if ($target eq 'web' || $target eq 'tex') {
1.17 matthew 1468: &get_attributes(\%axis,\%axis_defaults,$parstack,$safeeval,
1469: $tagstack->[-1]);
1.20 matthew 1470: } elsif ($target eq 'edit') {
1.25 matthew 1471: $result .= &Apache::edit::tag_start($target,$token,'Plot Axes');
1.65 matthew 1472: $result .= &edit_attributes($target,$token,\%axis_defaults,
1473: \@axis_edit_order);
1.20 matthew 1474: } elsif ($target eq 'modified') {
1.29 matthew 1475: my $constructtag=&Apache::edit::get_new_args
1476: ($token,$parstack,$safeeval,keys(%axis_defaults));
1477: if ($constructtag) {
1478: $result = &Apache::edit::rebuild_tag($token);
1479: }
1.4 matthew 1480: }
1.1 matthew 1481: return $result;
1482: }
1483:
1484: sub end_axis {
1485: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1486: my $result = '';
1.51 matthew 1487: if ($target eq 'web' || $target eq 'tex') {
1.20 matthew 1488: } elsif ($target eq 'edit') {
1.21 matthew 1489: $result.=&Apache::edit::tag_end($target,$token);
1.20 matthew 1490: } elsif ($target eq 'modified') {
1.4 matthew 1491: }
1.1 matthew 1492: return $result;
1493: }
1494:
1.21 matthew 1495: ###################################################################
1496: ## ##
1497: ## Utility Functions ##
1498: ## ##
1499: ###################################################################
1500:
1.13 matthew 1501: ##----------------------------------------------------------- set_defaults
1502: sub set_defaults {
1.21 matthew 1503: my ($var,$defaults) = @_;
1.13 matthew 1504: my $key;
1.24 matthew 1505: foreach $key (keys(%$defaults)) {
1.13 matthew 1506: $var->{$key} = $defaults->{$key}->{'default'};
1507: }
1508: }
1509:
1.1 matthew 1510: ##------------------------------------------------------------------- misc
1.2 matthew 1511: sub get_attributes{
1.21 matthew 1512: my ($values,$defaults,$parstack,$safeeval,$tag) = @_;
1.24 matthew 1513: foreach my $attr (keys(%{$defaults})) {
1.92 matthew 1514: if ($attr eq 'texwidth' || $attr eq 'texfont') {
1.86 albertel 1515: $values->{$attr} =
1516: &Apache::lonxml::get_param($attr,$parstack,$safeeval,undef,1);
1517: } else {
1518: $values->{$attr} =
1519: &Apache::lonxml::get_param($attr,$parstack,$safeeval);
1520: }
1.10 matthew 1521: if ($values->{$attr} eq '' | !defined($values->{$attr})) {
1.11 matthew 1522: $values->{$attr} = $defaults->{$attr}->{'default'};
1.6 matthew 1523: next;
1524: }
1.10 matthew 1525: my $test = $defaults->{$attr}->{'test'};
1526: if (! &$test($values->{$attr})) {
1.6 matthew 1527: &Apache::lonxml::warning
1528: ($tag.':'.$attr.': Bad value.'.'Replacing your value with : '
1.11 matthew 1529: .$defaults->{$attr}->{'default'} );
1530: $values->{$attr} = $defaults->{$attr}->{'default'};
1.10 matthew 1531: }
1.2 matthew 1532: }
1.11 matthew 1533: return ;
1.6 matthew 1534: }
1.40 matthew 1535:
1.15 matthew 1536: ##------------------------------------------------------- write_gnuplot_file
1.6 matthew 1537: sub write_gnuplot_file {
1.51 matthew 1538: my ($tmpdir,$filename,$target)= @_;
1.124 albertel 1539: my ($fontsize, $font_properties) = &get_font($target);
1.6 matthew 1540: my $gnuplot_input = '';
1.10 matthew 1541: my $curve;
1.100 matthew 1542: #
1543: # Check to be sure we do not have any empty curves
1544: my @curvescopy;
1545: foreach my $curve (@curves) {
1546: if (exists($curve->{'function'})) {
1547: if ($curve->{'function'} !~ /^\s*$/) {
1548: push(@curvescopy,$curve);
1549: }
1550: } elsif (exists($curve->{'data'})) {
1551: foreach my $data (@{$curve->{'data'}}) {
1552: if (scalar(@$data) > 0) {
1553: push(@curvescopy,$curve);
1554: last;
1555: }
1556: }
1557: }
1558: }
1559: @curves = @curvescopy;
1.6 matthew 1560: # Collect all the colors
1561: my @Colors;
1.107 foxr 1562: push @Colors, $Apache::lonplot::plot{'bgcolor'};
1563: push @Colors, $Apache::lonplot::plot{'fgcolor'};
1564: push @Colors, (defined($axis{'color'})?$axis{'color'}:$Apache::lonplot::plot{'fgcolor'});
1.9 matthew 1565: foreach $curve (@curves) {
1566: push @Colors, ($curve->{'color'} ne '' ?
1567: $curve->{'color'} :
1.107 foxr 1568: $Apache::lonplot::plot{'fgcolor'} );
1.6 matthew 1569: }
1570: # set term
1.51 matthew 1571: if ($target eq 'web') {
1.120 albertel 1572: $gnuplot_input .= 'set terminal png enhanced nocrop ';
1.107 foxr 1573: $gnuplot_input .= 'transparent ' if ($Apache::lonplot::plot{'transparent'} eq 'on');
1.120 albertel 1574: $gnuplot_input .= 'font "'.$Apache::lonnet::perlvar{'lonFontsDir'}.
1575: '/'.$font_properties->{'file'}.'.ttf" ';
1576: $gnuplot_input .= $fontsize;
1577: $gnuplot_input .= ' size '.$Apache::lonplot::plot{'width'}.','.$Apache::lonplot::plot{'height'}.' ';
1.51 matthew 1578: $gnuplot_input .= "@Colors\n";
1579: # set output
1580: $gnuplot_input .= "set output\n";
1581: } elsif ($target eq 'tex') {
1.120 albertel 1582: $gnuplot_input .= "set term postscript eps enhanced $Apache::lonplot::plot{'plotcolor'} solid ";
1.121 albertel 1583: if (!$font_properties->{'tex_no_file'}) {
1584: $gnuplot_input .=
1585: 'fontfile "'.$Apache::lonnet::perlvar{'lonFontsDir'}.
1586: '/'.$font_properties->{'file'}.'.pfb" ';
1587: }
1.120 albertel 1588: $gnuplot_input .= ' "'.$font_properties->{'printname'}.'" ';
1589: $gnuplot_input .= $fontsize;
1590: $gnuplot_input .= "\nset output \"/home/httpd/perl/tmp/".
1.113 www 1591: &unescape($filename).".eps\"\n";
1.143 foxr 1592: $gnuplot_input .= "set encoding iso_8859_1\n"; # Get access to extended font.
1593:
1.87 matthew 1594: }
1.115 albertel 1595: # cartesian or polar plot?
1.107 foxr 1596: if (lc($Apache::lonplot::plot{'plottype'}) eq 'polar') {
1.87 matthew 1597: $gnuplot_input .= 'set polar'.$/;
1598: } else {
1599: # Assume Cartesian
1.51 matthew 1600: }
1.115 albertel 1601: # cartesian or polar grid?
1602: if (lc($Apache::lonplot::plot{'gridtype'}) eq 'polar') {
1603: $gnuplot_input .= 'set grid polar'.$/;
1.118 albertel 1604: } elsif (lc($Apache::lonplot::plot{'gridtype'}) eq 'linear-log') {
1605: $gnuplot_input .= 'set logscale x'.$/;
1606: } elsif (lc($Apache::lonplot::plot{'gridtype'}) eq 'log-linear') {
1607: $gnuplot_input .= 'set logscale y'.$/;
1608: } elsif (lc($Apache::lonplot::plot{'gridtype'}) eq 'log-log') {
1609: $gnuplot_input .= 'set logscale x'.$/;
1610: $gnuplot_input .= 'set logscale y'.$/;
1.115 albertel 1611: } else {
1612: # Assume Cartesian
1613: }
1.110 albertel 1614: # solid or pattern for boxes?
1615: if (lc($Apache::lonplot::plot{'fillstyle'}) eq 'solid') {
1616: $gnuplot_input .= 'set style fill solid '.
1617: $Apache::lonplot::plot{'solid'}.$Apache::lonplot::plot{'box_border'}.$/;
1618: } elsif (lc($Apache::lonplot::plot{'fillstyle'}) eq 'pattern') {
1619: $gnuplot_input .= 'set style fill pattern '.$Apache::lonplot::plot{'pattern'}.$Apache::lonplot::plot{'box_border'}.$/;
1620: } elsif (lc($Apache::lonplot::plot{'fillstyle'}) eq 'empty') {
1621: }
1.101 matthew 1622: # margin
1.107 foxr 1623: if (lc($Apache::lonplot::plot{'lmargin'}) ne 'default') {
1624: $gnuplot_input .= 'set lmargin '.$Apache::lonplot::plot{'lmargin'}.$/;
1.101 matthew 1625: }
1.107 foxr 1626: if (lc($Apache::lonplot::plot{'rmargin'}) ne 'default') {
1627: $gnuplot_input .= 'set rmargin '.$Apache::lonplot::plot{'rmargin'}.$/;
1.101 matthew 1628: }
1.107 foxr 1629: if (lc($Apache::lonplot::plot{'tmargin'}) ne 'default') {
1630: $gnuplot_input .= 'set tmargin '.$Apache::lonplot::plot{'tmargin'}.$/;
1.101 matthew 1631: }
1.107 foxr 1632: if (lc($Apache::lonplot::plot{'bmargin'}) ne 'default') {
1633: $gnuplot_input .= 'set bmargin '.$Apache::lonplot::plot{'bmargin'}.$/;
1.101 matthew 1634: }
1.129 albertel 1635:
1.101 matthew 1636: # tic scales
1.129 albertel 1637: if ($version > 4) {
1638: $gnuplot_input .= 'set tics scale '.
1639: $Apache::lonplot::plot{'major_ticscale'}.', '.$Apache::lonplot::plot{'minor_ticscale'}.$/;
1640: } else {
1641: $gnuplot_input .= 'set ticscale '.
1642: $Apache::lonplot::plot{'major_ticscale'}.' '.$Apache::lonplot::plot{'minor_ticscale'}.$/;
1643: }
1.110 albertel 1644: #boxwidth
1645: if (lc($Apache::lonplot::plot{'boxwidth'}) ne '') {
1646: $gnuplot_input .= 'set boxwidth '.$Apache::lonplot::plot{'boxwidth'}.$/;
1647: }
1648: # gridlayer
1649: $gnuplot_input .= 'set grid noxtics noytics front '.$/
1650: if ($Apache::lonplot::plot{'gridlayer'} eq 'on');
1651:
1.7 matthew 1652: # grid
1.107 foxr 1653: $gnuplot_input .= 'set grid'.$/ if ($Apache::lonplot::plot{'grid'} eq 'on');
1.7 matthew 1654: # border
1.107 foxr 1655: $gnuplot_input .= ($Apache::lonplot::plot{'border'} eq 'on'?
1.9 matthew 1656: 'set border'.$/ :
1.67 matthew 1657: 'set noborder'.$/ );
1.77 matthew 1658: # sampling rate for non-data curves
1.107 foxr 1659: $gnuplot_input .= "set samples $Apache::lonplot::plot{'samples'}\n";
1.67 matthew 1660: # title, xlabel, ylabel
1.45 matthew 1661: # titles
1.125 albertel 1662: my $extra_space_x = ($xtics{'location'} eq 'axis') ? ' 0, -0.5 ' : '';
1663: my $extra_space_y = ($ytics{'location'} eq 'axis') ? ' -0.5, 0 ' : '';
1664:
1.89 matthew 1665: if ($target eq 'tex') {
1.125 albertel 1666: $gnuplot_input .= "set title \"$title\" font \"".$font_properties->{'printname'}.",".$fontsize."pt\"\n" if (defined($title)) ;
1667: $gnuplot_input .= "set xlabel \"$xlabel\" $extra_space_x font \"".$font_properties->{'printname'}.",".$fontsize."pt\"\n" if (defined($xlabel));
1668: $gnuplot_input .= "set ylabel \"$ylabel\" $extra_space_y font \"".$font_properties->{'printname'}.",".$fontsize."pt\"\n" if (defined($ylabel));
1.89 matthew 1669: } else {
1.125 albertel 1670: $gnuplot_input .= "set title \"$title\" \n" if (defined($title)) ;
1671: $gnuplot_input .= "set xlabel \"$xlabel\" $extra_space_x \n" if (defined($xlabel));
1672: $gnuplot_input .= "set ylabel \"$ylabel\" $extra_space_y \n" if (defined($ylabel));
1.89 matthew 1673: }
1.45 matthew 1674: # tics
1675: if (%xtics) {
1676: $gnuplot_input .= "set xtics $xtics{'location'} ";
1.46 matthew 1677: $gnuplot_input .= ( $xtics{'mirror'} eq 'on'?"mirror ":"nomirror ");
1.45 matthew 1678: $gnuplot_input .= "$xtics{'start'}, ";
1679: $gnuplot_input .= "$xtics{'increment'}, ";
1.146 foxr 1680: $gnuplot_input .= "$xtics{'end'} ";
1681: if ($target eq 'tex') {
1682: $gnuplot_input .= 'font "Helvetica,22"'; # Needed in iso 8859-1 enc.
1683: }
1684: $gnuplot_input .= "\n";
1.89 matthew 1685: if ($xtics{'minorfreq'} != 0) {
1686: $gnuplot_input .= "set mxtics ".$xtics{'minorfreq'}."\n";
1687: }
1.146 foxr 1688: } else {
1689: if ($target eq 'tex') {
1690: $gnuplot_input .= 'set xtics font "Helvetica,22"'."\n"; # needed in iso 8859-1 enc
1691: }
1.45 matthew 1692: }
1693: if (%ytics) {
1694: $gnuplot_input .= "set ytics $ytics{'location'} ";
1.46 matthew 1695: $gnuplot_input .= ( $ytics{'mirror'} eq 'on'?"mirror ":"nomirror ");
1.45 matthew 1696: $gnuplot_input .= "$ytics{'start'}, ";
1697: $gnuplot_input .= "$ytics{'increment'}, ";
1.146 foxr 1698: $gnuplot_input .= "$ytics{'end'} ";
1.89 matthew 1699: if ($ytics{'minorfreq'} != 0) {
1700: $gnuplot_input .= "set mytics ".$ytics{'minorfreq'}."\n";
1701: }
1.146 foxr 1702: if ($target eq 'tex') {
1703: $gnuplot_input .= 'font "Helvetica,22"'; # Needed in iso-8859-1 encoding.
1704: }
1705: $gnuplot_input .= "\n";
1706:
1707: } else {
1708: if ($target eq 'tex') {
1709: $gnuplot_input .= 'set ytics font "Helvetica,22"'."\n"; # Needed for iso 8859-1 enc.
1710: }
1.45 matthew 1711: }
1712: # axis
1.23 matthew 1713: if (%axis) {
1.132 albertel 1714: if ($axis{'xformat'} ne 'on') {
1715: $gnuplot_input .= "set format x ";
1716: if ($axis{'xformat'} eq 'off') {
1717: $gnuplot_input .= "\"\"\n";
1718: } else {
1719: $gnuplot_input .= "\"\%.".$axis{'xformat'}."\"\n";
1720: }
1721: }
1722: if ($axis{'yformat'} ne 'on') {
1723: $gnuplot_input .= "set format y ";
1724: if ($axis{'yformat'} eq 'off') {
1725: $gnuplot_input .= "\"\"\n";
1726: } else {
1727: $gnuplot_input .= "\"\%.".$axis{'yformat'}."\"\n";
1728: }
1729: }
1.13 matthew 1730: $gnuplot_input .= "set xrange \[$axis{'xmin'}:$axis{'xmax'}\]\n";
1731: $gnuplot_input .= "set yrange \[$axis{'ymin'}:$axis{'ymax'}\]\n";
1.6 matthew 1732: }
1733: # Key
1.23 matthew 1734: if (%key) {
1.9 matthew 1735: $gnuplot_input .= 'set key '.$key{'pos'}.' ';
1736: if ($key{'title'} ne '') {
1.67 matthew 1737: $gnuplot_input .= 'title "'.$key{'title'}.'" ';
1.11 matthew 1738: }
1739: $gnuplot_input .= ($key{'box'} eq 'on' ? 'box ' : 'nobox ').$/;
1.6 matthew 1740: } else {
1.9 matthew 1741: $gnuplot_input .= 'set nokey'.$/;
1.13 matthew 1742: }
1.6 matthew 1743: # labels
1.10 matthew 1744: my $label;
1.6 matthew 1745: foreach $label (@labels) {
1746: $gnuplot_input .= 'set label "'.$label->{'text'}.'" at '.
1.134 raeburn 1747: $label->{'xpos'}.','.$label->{'ypos'};
1748: if ($label->{'rotate'} ne '') {
1749: $gnuplot_input .= ' rotate by '.$label->{'rotate'};
1750: }
1751: $gnuplot_input .= ' '.$label->{'justify'};
1752:
1.103 matthew 1753: if ($target eq 'tex') {
1.124 albertel 1754: $gnuplot_input .=' font "'.$font_properties->{'printname'}.','.$fontsize.'pt"' ;
1.103 matthew 1755: }
1756: $gnuplot_input .= $/;
1.6 matthew 1757: }
1.74 matthew 1758: if ($target eq 'tex') {
1.107 foxr 1759: $gnuplot_input .="set size 1,".$Apache::lonplot::plot{'height'}/$Apache::lonplot::plot{'width'}*1.38;
1.74 matthew 1760: $gnuplot_input .="\n";
1.120 albertel 1761: }
1.6 matthew 1762: # curves
1763: $gnuplot_input .= 'plot ';
1.9 matthew 1764: for (my $i = 0;$i<=$#curves;$i++) {
1765: $curve = $curves[$i];
1766: $gnuplot_input.= ', ' if ($i > 0);
1.119 albertel 1767: if ($target eq 'tex') {
1768: $curve->{'linewidth'} *= 2;
1769: }
1.6 matthew 1770: if (exists($curve->{'function'})) {
1.9 matthew 1771: $gnuplot_input.=
1772: $curve->{'function'}.' title "'.
1773: $curve->{'name'}.'" with '.
1.72 matthew 1774: $curve->{'linestyle'};
1.119 albertel 1775:
1.60 matthew 1776: if (($curve->{'linestyle'} eq 'points') ||
1777: ($curve->{'linestyle'} eq 'linespoints') ||
1778: ($curve->{'linestyle'} eq 'errorbars') ||
1779: ($curve->{'linestyle'} eq 'xerrorbars') ||
1780: ($curve->{'linestyle'} eq 'yerrorbars') ||
1781: ($curve->{'linestyle'} eq 'xyerrorbars')) {
1.62 matthew 1782: $gnuplot_input.=' pointtype '.$curve->{'pointtype'};
1.60 matthew 1783: $gnuplot_input.=' pointsize '.$curve->{'pointsize'};
1.110 albertel 1784: } elsif ($curve->{'linestyle'} eq 'filledcurves') {
1785: $gnuplot_input.= ' '.$curve->{'limit'};
1.135 faziophi 1786: } elsif ($curve->{'linetype'} ne '' &&
1787: $curve->{'linestyle'} eq 'lines') {
1788: $gnuplot_input.= ' linetype ';
1789: $gnuplot_input.= $linetypes{$curve->{'linetype'}};
1790: $gnuplot_input.= ' linecolor rgb "';
1791: # convert color from xaaaaaa to #aaaaaa
1.136 raeburn 1792: $curve->{'color'} =~ s/^x/#/;
1.135 faziophi 1793: $gnuplot_input.= $curve->{'color'}.'"';
1.60 matthew 1794: }
1.131 albertel 1795: $gnuplot_input.= ' linewidth '.$curve->{'linewidth'};
1796:
1.6 matthew 1797: } elsif (exists($curve->{'data'})) {
1.40 matthew 1798: # Store data values in $datatext
1799: my $datatext = '';
1800: # get new filename
1.70 matthew 1801: my $datafilename = "$tmpdir/$filename.data.$i";
1.40 matthew 1802: my $fh=Apache::File->new(">$datafilename");
1803: # Compile data
1.6 matthew 1804: my @Data = @{$curve->{'data'}};
1.9 matthew 1805: my @Data0 = @{$Data[0]};
1806: for (my $i =0; $i<=$#Data0; $i++) {
1.10 matthew 1807: my $dataset;
1.6 matthew 1808: foreach $dataset (@Data) {
1.9 matthew 1809: $datatext .= $dataset->[$i] . ' ';
1.6 matthew 1810: }
1.9 matthew 1811: $datatext .= $/;
1.6 matthew 1812: }
1.40 matthew 1813: # write file
1814: print $fh $datatext;
1.119 albertel 1815: close($fh);
1.40 matthew 1816: # generate gnuplot text
1817: $gnuplot_input.= '"'.$datafilename.'" title "'.
1818: $curve->{'name'}.'" with '.
1819: $curve->{'linestyle'};
1.62 matthew 1820: if (($curve->{'linestyle'} eq 'points') ||
1821: ($curve->{'linestyle'} eq 'linespoints') ||
1822: ($curve->{'linestyle'} eq 'errorbars') ||
1823: ($curve->{'linestyle'} eq 'xerrorbars') ||
1824: ($curve->{'linestyle'} eq 'yerrorbars') ||
1825: ($curve->{'linestyle'} eq 'xyerrorbars')) {
1826: $gnuplot_input.=' pointtype '.$curve->{'pointtype'};
1827: $gnuplot_input.=' pointsize '.$curve->{'pointsize'};
1.110 albertel 1828: } elsif ($curve->{'linestyle'} eq 'filledcurves') {
1829: $gnuplot_input.= ' '.$curve->{'limit'};
1.135 faziophi 1830: } elsif ($curve->{'linetype'} ne '' &&
1831: $curve->{'linestyle'} eq 'lines') {
1832: $gnuplot_input.= ' linetype ';
1833: $gnuplot_input.= $linetypes{$curve->{'linetype'}};
1834: $gnuplot_input.= ' linecolor rgb "';
1835: # convert color from xaaaaaa to #aaaaaa
1.136 raeburn 1836: $curve->{'color'} =~ s/^x/#/;
1.135 faziophi 1837: $gnuplot_input.= $curve->{'color'}.'"';
1.62 matthew 1838: }
1.135 faziophi 1839: $gnuplot_input.= ' linewidth '.$curve->{'linewidth'};
1.6 matthew 1840: }
1841: }
1.40 matthew 1842: # Write the output to a file.
1.128 albertel 1843: open (my $fh,">$tmpdir$filename.data");
1844: binmode($fh, ":utf8");
1.40 matthew 1845: print $fh $gnuplot_input;
1846: close($fh);
1847: # That's all folks.
1848: return ;
1.2 matthew 1849: }
1.21 matthew 1850:
1851: #---------------------------------------------- check_inputs
1852: sub check_inputs {
1853: ## Note: no inputs, no outputs - this acts only on global variables.
1854: ## Make sure we have all the input we need:
1.107 foxr 1855: if (! %Apache::lonplot::plot) { &set_defaults(\%Apache::lonplot::plot,\%gnuplot_defaults); }
1.23 matthew 1856: if (! %key ) {} # No key for this plot, thats okay
1.34 matthew 1857: # if (! %axis) { &set_defaults(\%axis,\%axis_defaults); }
1.21 matthew 1858: if (! defined($title )) {} # No title for this plot, thats okay
1859: if (! defined($xlabel)) {} # No xlabel for this plot, thats okay
1860: if (! defined($ylabel)) {} # No ylabel for this plot, thats okay
1861: if ($#labels < 0) { } # No labels for this plot, thats okay
1862: if ($#curves < 0) {
1863: &Apache::lonxml::warning("No curves specified for plot!!!!");
1864: return '';
1865: }
1866: my $curve;
1867: foreach $curve (@curves) {
1868: if (!defined($curve->{'function'})&&!defined($curve->{'data'})){
1.85 matthew 1869: &Apache::lonxml::warning("One of the curves specified did not contain any curve data or curve function declarations\n");
1.21 matthew 1870: return '';
1871: }
1872: }
1873: }
1874:
1.20 matthew 1875: #------------------------------------------------ make_edit
1876: sub edit_attributes {
1.34 matthew 1877: my ($target,$token,$defaults,$keys) = @_;
1878: my ($result,@keys);
1879: if ($keys && ref($keys) eq 'ARRAY') {
1880: @keys = @$keys;
1881: } else {
1882: @keys = sort(keys(%$defaults));
1883: }
1884: foreach my $attr (@keys) {
1.35 matthew 1885: # append a ' ' to the description if it doesn't have one already.
1886: my $description = $defaults->{$attr}->{'description'};
1887: $description .= ' ' if ($description !~ / $/);
1.20 matthew 1888: if ($defaults->{$attr}->{'edit_type'} eq 'entry') {
1.35 matthew 1889: $result .= &Apache::edit::text_arg
1.38 matthew 1890: ($description,$attr,$token,
1891: $defaults->{$attr}->{'size'});
1.20 matthew 1892: } elsif ($defaults->{$attr}->{'edit_type'} eq 'choice') {
1.102 albertel 1893: $result .= &Apache::edit::select_or_text_arg
1.35 matthew 1894: ($description,$attr,$defaults->{$attr}->{'choices'},$token);
1.45 matthew 1895: } elsif ($defaults->{$attr}->{'edit_type'} eq 'onoff') {
1.102 albertel 1896: $result .= &Apache::edit::select_or_text_arg
1.35 matthew 1897: ($description,$attr,['on','off'],$token);
1.20 matthew 1898: }
1.25 matthew 1899: $result .= '<br />';
1.20 matthew 1900: }
1901: return $result;
1902: }
1.1 matthew 1903:
1.21 matthew 1904:
1905: ###################################################################
1906: ## ##
1907: ## Insertion functions for editing plots ##
1908: ## ##
1909: ###################################################################
1910:
1.47 matthew 1911: sub insert_gnuplot {
1.29 matthew 1912: my $result = '';
1.20 matthew 1913: # plot attributes
1.61 matthew 1914: $result .= "\n<gnuplot ";
1.47 matthew 1915: foreach my $attr (keys(%gnuplot_defaults)) {
1.61 matthew 1916: $result .= "\n $attr=\"$gnuplot_defaults{$attr}->{'default'}\"";
1.20 matthew 1917: }
1.61 matthew 1918: $result .= ">";
1.47 matthew 1919: # Add the components (most are commented out for simplicity)
1.44 matthew 1920: # $result .= &insert_key();
1921: # $result .= &insert_axis();
1922: # $result .= &insert_title();
1923: # $result .= &insert_xlabel();
1924: # $result .= &insert_ylabel();
1.20 matthew 1925: $result .= &insert_curve();
1.50 matthew 1926: # close up the <gnuplot>
1.61 matthew 1927: $result .= "\n</gnuplot>";
1.45 matthew 1928: return $result;
1929: }
1930:
1.46 matthew 1931: sub insert_tics {
1932: my $result;
1933: $result .= &insert_xtics() . &insert_ytics;
1934: return $result;
1935: }
1936:
1.45 matthew 1937: sub insert_xtics {
1938: my $result;
1.46 matthew 1939: $result .= "\n <xtics ";
1.45 matthew 1940: foreach my $attr (keys(%tic_defaults)) {
1.61 matthew 1941: $result .= "\n $attr=\"$tic_defaults{$attr}->{'default'}\" ";
1.45 matthew 1942: }
1.61 matthew 1943: $result .= "/>";
1.45 matthew 1944: return $result;
1945: }
1946:
1947: sub insert_ytics {
1948: my $result;
1.46 matthew 1949: $result .= "\n <ytics ";
1.45 matthew 1950: foreach my $attr (keys(%tic_defaults)) {
1.61 matthew 1951: $result .= "\n $attr=\"$tic_defaults{$attr}->{'default'}\" ";
1.45 matthew 1952: }
1.61 matthew 1953: $result .= "/>";
1.20 matthew 1954: return $result;
1955: }
1956:
1957: sub insert_key {
1958: my $result;
1.61 matthew 1959: $result .= "\n <key ";
1.30 matthew 1960: foreach my $attr (keys(%key_defaults)) {
1.61 matthew 1961: $result .= "\n $attr=\"$key_defaults{$attr}->{'default'}\"";
1.20 matthew 1962: }
1.61 matthew 1963: $result .= " />";
1.20 matthew 1964: return $result;
1965: }
1966:
1967: sub insert_axis{
1968: my $result;
1.46 matthew 1969: $result .= "\n <axis ";
1.30 matthew 1970: foreach my $attr (keys(%axis_defaults)) {
1.61 matthew 1971: $result .= "\n $attr=\"$axis_defaults{$attr}->{'default'}\"";
1.20 matthew 1972: }
1.61 matthew 1973: $result .= " />";
1.20 matthew 1974: return $result;
1975: }
1.28 matthew 1976:
1.61 matthew 1977: sub insert_title { return "\n <title></title>"; }
1978: sub insert_xlabel { return "\n <xlabel></xlabel>"; }
1979: sub insert_ylabel { return "\n <ylabel></ylabel>"; }
1.20 matthew 1980:
1981: sub insert_label {
1982: my $result;
1.46 matthew 1983: $result .= "\n <label ";
1.30 matthew 1984: foreach my $attr (keys(%label_defaults)) {
1.61 matthew 1985: $result .= "\n $attr=\"".
1986: $label_defaults{$attr}->{'default'}."\"";
1.20 matthew 1987: }
1.61 matthew 1988: $result .= "></label>";
1.20 matthew 1989: return $result;
1990: }
1991:
1992: sub insert_curve {
1993: my $result;
1.41 matthew 1994: $result .= "\n <curve ";
1.30 matthew 1995: foreach my $attr (keys(%curve_defaults)) {
1.61 matthew 1996: $result .= "\n $attr=\"".
1997: $curve_defaults{$attr}->{'default'}."\"";
1.20 matthew 1998: }
1.61 matthew 1999: $result .= " >";
2000: $result .= &insert_data().&insert_data()."\n </curve>";
1.20 matthew 2001: }
1.4 matthew 2002:
1.20 matthew 2003: sub insert_function {
2004: my $result;
1.61 matthew 2005: $result .= "\n <function></function>";
1.20 matthew 2006: return $result;
2007: }
1.4 matthew 2008:
1.20 matthew 2009: sub insert_data {
2010: my $result;
1.61 matthew 2011: $result .= "\n <data></data>";
1.20 matthew 2012: return $result;
2013: }
1.4 matthew 2014:
1.48 matthew 2015: ##----------------------------------------------------------------------
1.20 matthew 2016: 1;
2017: __END__
1.4 matthew 2018:
2019:
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