Annotation of loncom/xml/lonplot.pm, revision 1.119
1.1 matthew 1: # The LearningOnline Network with CAPA
2: # Dynamic plot
3: #
1.119 ! albertel 4: # $Id: lonplot.pm,v 1.118 2007/06/07 23:42:14 albertel 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 lib '/home/httpd/lib/perl/';
40: use LONCAPA;
41:
1.10 matthew 42:
1.97 matthew 43: use vars qw/$weboutputformat $versionstring/;
44:
1.109 foxr 45:
1.108 foxr 46:
1.33 harris41 47: BEGIN {
1.97 matthew 48: &Apache::lonxml::register('Apache::lonplot',('gnuplot'));
49: #
50: # Determine the version of GNUPLOT
51: $weboutputformat = 'gif';
1.99 matthew 52: $versionstring = `gnuplot --version 2>/dev/null`;
1.97 matthew 53: if ($versionstring =~ /^gnuplot 4/) {
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:
1.29 matthew 94: my %linestyles =
95: (
96: lines => 2, # Maybe this will be used in the future
97: linespoints => 2, # to check on whether or not they have
98: dots => 2, # supplied enough <data></data> fields
99: points => 2, # to use the given line style. But for
100: steps => 2, # now there are more important things
101: fsteps => 2, # for me to deal with.
102: histeps => 2,
1.34 matthew 103: errorbars => 3,
104: xerrorbars => [3,4],
105: yerrorbars => [3,4],
1.35 matthew 106: xyerrorbars => [4,6],
1.34 matthew 107: boxes => 3,
1.110 albertel 108: filledcurves => 2,
1.35 matthew 109: vector => 4
1.29 matthew 110: );
111:
1.11 matthew 112: my $int_test = sub {$_[0]=~s/\s+//g;$_[0]=~/^\d+$/};
1.19 matthew 113: my $real_test =
114: sub {$_[0]=~s/\s+//g;$_[0]=~/^[+-]?\d*\.?\d*([eE][+-]\d+)?$/};
1.62 matthew 115: my $pos_real_test =
116: sub {$_[0]=~s/\s+//g;$_[0]=~/^[+]?\d*\.?\d*([eE][+-]\d+)?$/};
1.79 matthew 117: my $color_test = sub {$_[0]=~s/\s+//g;$_[0]=~/^x[\da-fA-F]{6}$/};
1.1 matthew 118: my $onoff_test = sub {$_[0]=~/^(on|off)$/};
1.15 matthew 119: my $key_pos_test = sub {$_[0]=~/^(top|bottom|right|left|outside|below| )+$/};
1.119 ! albertel 120: my $sml_test = sub {$_[0]=~/^(\d+|small|medium|large)$/};
1.29 matthew 121: my $linestyle_test = sub {exists($linestyles{$_[0]})};
1.67 matthew 122: my $words_test = sub {$_[0]=~s/\s+/ /g;$_[0]=~/^([\w~!\@\#\$\%^&\*\(\)-=_\+\[\]\{\}:\;\'<>,\.\/\?\\]+ ?)+$/};
1.21 matthew 123:
124: ###################################################################
125: ## ##
126: ## Attribute metadata ##
127: ## ##
128: ###################################################################
1.47 matthew 129: my @gnuplot_edit_order =
1.82 matthew 130: qw/alttag bgcolor fgcolor height width font transparent grid samples
1.115 albertel 131: border align texwidth texfont plotcolor plottype gridtype lmargin rmargin
132: tmargin bmargin major_ticscale minor_ticscale boxwidth gridlayer fillstyle
1.110 albertel 133: pattern solid/;
1.101 matthew 134:
1.105 matthew 135: my $margin_choices = ['default',0..20];
1.48 matthew 136:
1.47 matthew 137: my %gnuplot_defaults =
1.1 matthew 138: (
1.64 matthew 139: alttag => {
140: default => 'dynamically generated plot',
141: test => $words_test,
142: description => 'brief description of the plot',
143: edit_type => 'entry',
144: size => '40'
145: },
1.20 matthew 146: height => {
1.65 matthew 147: default => 300,
1.20 matthew 148: test => $int_test,
1.29 matthew 149: description => 'height of image (pixels)',
1.38 matthew 150: edit_type => 'entry',
151: size => '10'
1.20 matthew 152: },
153: width => {
1.65 matthew 154: default => 400,
1.20 matthew 155: test => $int_test,
1.29 matthew 156: description => 'width of image (pixels)',
1.38 matthew 157: edit_type => 'entry',
158: size => '10'
1.20 matthew 159: },
160: bgcolor => {
161: default => 'xffffff',
162: test => $color_test,
163: description => 'background color of image (xffffff)',
1.38 matthew 164: edit_type => 'entry',
165: size => '10'
1.20 matthew 166: },
167: fgcolor => {
168: default => 'x000000',
169: test => $color_test,
170: description => 'foreground color of image (x000000)',
1.38 matthew 171: edit_type => 'entry',
172: size => '10'
1.20 matthew 173: },
174: transparent => {
175: default => 'off',
176: test => $onoff_test,
1.34 matthew 177: description => 'Transparent image',
1.45 matthew 178: edit_type => 'onoff'
1.20 matthew 179: },
180: grid => {
1.65 matthew 181: default => 'on',
1.20 matthew 182: test => $onoff_test,
1.34 matthew 183: description => 'Display grid',
1.45 matthew 184: edit_type => 'onoff'
1.20 matthew 185: },
1.110 albertel 186: gridlayer => {
187: default => 'off',
188: test => $onoff_test,
189: description => 'Display grid front layer over filled boxes or filled curves',
190: edit_type => 'onoff'
191: },
192: box_border => {
193: default => 'noborder',
194: test => sub {$_[0]=~/^(noborder|border)$/},
195: description => 'Draw border for boxes',
196: edit_type => 'choice',
197: choices => ['border','noborder']
198: },
1.20 matthew 199: border => {
200: default => 'on',
201: test => $onoff_test,
1.34 matthew 202: description => 'Draw border around plot',
1.45 matthew 203: edit_type => 'onoff'
1.20 matthew 204: },
205: font => {
1.119 ! albertel 206: default => '9',
1.20 matthew 207: test => $sml_test,
208: description => 'Size of font to use',
209: edit_type => 'choice',
1.119 ! albertel 210: choices => [['5','5 (small)'],'7',['9','9 (medium)'],'10','12',['15','15 (large)']]
1.20 matthew 211: },
1.110 albertel 212: samples => {
1.77 matthew 213: default => '100',
214: test => $int_test,
215: description => 'Number of samples for non-data plots',
216: edit_type => 'choice',
217: choices => ['100','200','500','1000','2000','5000']
218: },
1.20 matthew 219: align => {
1.116 albertel 220: default => 'middle',
221: test => sub {$_[0]=~/^(left|right|middle|center)$/},
1.20 matthew 222: description => 'alignment for image in html',
223: edit_type => 'choice',
1.116 albertel 224: choices => ['left','right','middle']
1.82 matthew 225: },
226: texwidth => {
227: default => '93',
228: test => $int_test,
229: description => 'Width of plot when printed (mm)',
230: edit_type => 'entry',
231: size => '5'
232: },
1.110 albertel 233: texfont => {
1.92 matthew 234: default => '22',
235: test => $int_test,
236: description => 'Font size to use in TeX output (pts):',
237: edit_type => 'choice',
1.96 matthew 238: choices => [qw/8 10 12 14 16 18 20 22 24 26 28 30 32 34 36/],
1.92 matthew 239: },
1.110 albertel 240: plotcolor => {
1.105 matthew 241: default => 'monochrome',
242: test => sub {$_[0]=~/^(monochrome|color|colour)$/},
243: description => 'Color setting for printing:',
244: edit_type => 'choice',
245: choices => [qw/monochrome color colour/],
246: },
1.110 albertel 247: pattern => {
248: default => '',
249: test => $int_test,
250: description => 'pattern value for boxes:',
251: edit_type => 'choice',
252: choices => [0,1,2,3,4,5,6]
253: },
254: solid => {
255: default => 0,
256: test => $real_test,
257: description => 'The density of fill style for boxes',
258: edit_type => 'entry',
259: size => '5'
260: },
261: fillstyle => {
262: default => 'empty',
263: test => sub {$_[0]=~/^(empty|solid|pattern)$/},
264: description => 'Filled style for boxes:',
265: edit_type => 'choice',
266: choices => ['empty','solid','pattern']
267: },
268: plottype => {
1.87 matthew 269: default => 'Cartesian',
270: test => sub {$_[0]=~/^(Polar|Cartesian)$/},
271: description => 'Plot type:',
272: edit_type => 'choice',
1.94 matthew 273: choices => ['Cartesian','Polar']
1.87 matthew 274: },
1.115 albertel 275: gridtype => {
276: default => 'Cartesian',
1.118 albertel 277: test => sub {$_[0]=~/^(Polar|Cartesian|Linear-Log|Log-Linear|Log-Log)$/},
1.115 albertel 278: description => 'Grid type:',
279: edit_type => 'choice',
1.118 albertel 280: choices => ['Cartesian','Polar','Linear-Log','Log-Linear','Log-Log']
1.115 albertel 281: },
1.110 albertel 282: lmargin => {
1.101 matthew 283: default => 'default',
284: test => sub {$_[0]=~/^(default|\d+)$/},
285: description => 'Left margin width (pts):',
286: edit_type => 'choice',
287: choices => $margin_choices,
288: },
1.110 albertel 289: rmargin => {
1.101 matthew 290: default => 'default',
291: test => sub {$_[0]=~/^(default|\d+)$/},
292: description => 'Right margin width (pts):',
293: edit_type => 'choice',
294: choices => $margin_choices,
295: },
1.110 albertel 296: tmargin => {
1.101 matthew 297: default => 'default',
298: test => sub {$_[0]=~/^(default|\d+)$/},
299: description => 'Top margin width (pts):',
300: edit_type => 'choice',
301: choices => $margin_choices,
302: },
1.110 albertel 303: bmargin => {
1.101 matthew 304: default => 'default',
305: test => sub {$_[0]=~/^(default|\d+)$/},
1.104 www 306: description => 'Bottom margin width (pts):',
1.101 matthew 307: edit_type => 'choice',
308: choices => $margin_choices,
309: },
1.110 albertel 310: boxwidth => {
311: default => '',
312: test => $real_test,
313: description => 'width of boxes default auto',
314: edit_type => 'entry',
315: size => '5'
316: },
1.101 matthew 317: major_ticscale => {
318: default => '1',
319: test => $real_test,
320: description => 'Size of major tic marks (plot coordinates)',
321: edit_type => 'entry',
322: size => '5'
323: },
324: minor_ticscale => {
325: default => '0.5',
326: test => $real_test,
327: description => 'Size of minor tic mark (plot coordinates)',
328: edit_type => 'entry',
329: size => '5'
330: },
1.1 matthew 331: );
332:
333: my %key_defaults =
334: (
1.20 matthew 335: title => {
336: default => '',
337: test => $words_test,
338: description => 'Title of key',
1.38 matthew 339: edit_type => 'entry',
340: size => '40'
1.20 matthew 341: },
342: box => {
343: default => 'off',
344: test => $onoff_test,
345: description => 'Draw a box around the key?',
1.45 matthew 346: edit_type => 'onoff'
1.20 matthew 347: },
348: pos => {
349: default => 'top right',
350: test => $key_pos_test,
351: description => 'position of the key on the plot',
352: edit_type => 'choice',
353: choices => ['top left','top right','bottom left','bottom right',
354: 'outside','below']
355: }
1.1 matthew 356: );
357:
358: my %label_defaults =
359: (
1.20 matthew 360: xpos => {
361: default => 0,
362: test => $real_test,
363: description => 'x position of label (graph coordinates)',
1.38 matthew 364: edit_type => 'entry',
365: size => '10'
1.20 matthew 366: },
367: ypos => {
368: default => 0,
369: test => $real_test,
370: description => 'y position of label (graph coordinates)',
1.38 matthew 371: edit_type => 'entry',
372: size => '10'
1.20 matthew 373: },
374: justify => {
375: default => 'left',
376: test => sub {$_[0]=~/^(left|right|center)$/},
377: description => 'justification of the label text on the plot',
378: edit_type => 'choice',
379: choices => ['left','right','center']
380: }
1.1 matthew 381: );
382:
1.89 matthew 383: my @tic_edit_order = ('location','mirror','start','increment','end',
384: 'minorfreq');
1.45 matthew 385: my %tic_defaults =
386: (
387: location => {
388: default => 'border',
389: test => sub {$_[0]=~/^(border|axis)$/},
1.90 matthew 390: description => 'Location of major tic marks',
1.45 matthew 391: edit_type => 'choice',
392: choices => ['border','axis']
393: },
394: mirror => {
395: default => 'on',
396: test => $onoff_test,
1.90 matthew 397: description => 'mirror tics on opposite axis?',
1.45 matthew 398: edit_type => 'onoff'
399: },
400: start => {
401: default => '-10.0',
402: test => $real_test,
1.90 matthew 403: description => 'Start major tics at',
1.45 matthew 404: edit_type => 'entry',
405: size => '10'
406: },
407: increment => {
408: default => '1.0',
409: test => $real_test,
1.90 matthew 410: description => 'Place a major tic every',
1.45 matthew 411: edit_type => 'entry',
412: size => '10'
413: },
414: end => {
415: default => ' 10.0',
416: test => $real_test,
1.90 matthew 417: description => 'Stop major tics at ',
1.45 matthew 418: edit_type => 'entry',
419: size => '10'
420: },
1.89 matthew 421: minorfreq => {
422: default => '0',
423: test => $int_test,
1.98 matthew 424: description => 'Number of minor tics per major tic mark',
1.89 matthew 425: edit_type => 'entry',
426: size => '10'
427: },
1.45 matthew 428: );
429:
1.65 matthew 430: my @axis_edit_order = ('color','xmin','xmax','ymin','ymax');
1.1 matthew 431: my %axis_defaults =
432: (
1.28 matthew 433: color => {
1.20 matthew 434: default => 'x000000',
435: test => $color_test,
1.78 matthew 436: description => 'color of grid lines (x000000)',
1.38 matthew 437: edit_type => 'entry',
438: size => '10'
1.20 matthew 439: },
440: xmin => {
441: default => '-10.0',
442: test => $real_test,
443: description => 'minimum x-value shown in plot',
1.38 matthew 444: edit_type => 'entry',
445: size => '10'
1.20 matthew 446: },
447: xmax => {
448: default => ' 10.0',
449: test => $real_test,
450: description => 'maximum x-value shown in plot',
1.38 matthew 451: edit_type => 'entry',
452: size => '10'
1.20 matthew 453: },
454: ymin => {
455: default => '-10.0',
456: test => $real_test,
457: description => 'minimum y-value shown in plot',
1.38 matthew 458: edit_type => 'entry',
459: size => '10'
1.20 matthew 460: },
461: ymax => {
462: default => ' 10.0',
463: test => $real_test,
464: description => 'maximum y-value shown in plot',
1.38 matthew 465: edit_type => 'entry',
466: size => '10'
1.20 matthew 467: }
1.1 matthew 468: );
469:
1.119 ! albertel 470: my @curve_edit_order = ('color','name','linestyle','linewidth','pointtype','pointsize','limit');
1.60 matthew 471:
1.1 matthew 472: my %curve_defaults =
473: (
1.20 matthew 474: color => {
475: default => 'x000000',
476: test => $color_test,
477: description => 'color of curve (x000000)',
1.38 matthew 478: edit_type => 'entry',
479: size => '10'
1.20 matthew 480: },
481: name => {
482: default => '',
483: test => $words_test,
484: description => 'name of curve to appear in key',
1.38 matthew 485: edit_type => 'entry',
486: size => '20'
1.20 matthew 487: },
488: linestyle => {
489: default => 'lines',
490: test => $linestyle_test,
1.35 matthew 491: description => 'Line style',
1.20 matthew 492: edit_type => 'choice',
1.38 matthew 493: choices => [keys(%linestyles)]
1.60 matthew 494: },
1.119 ! albertel 495: linewidth => {
! 496: default => 4,
! 497: test => $int_test,
! 498: description => 'Line width (may not apply to all line styles)',
! 499: edit_type => 'choice',
! 500: choices => [1,2,3,4,5,6,7,8,9,10]
! 501: },
1.60 matthew 502: pointsize => {
503: default => 1,
1.62 matthew 504: test => $pos_real_test,
505: description => 'point size (may not apply to all line styles)',
506: edit_type => 'entry',
507: size => '5'
508: },
509: pointtype => {
510: default => 1,
1.60 matthew 511: test => $int_test,
1.62 matthew 512: description => 'point type (may not apply to all line styles)',
1.60 matthew 513: edit_type => 'choice',
1.62 matthew 514: choices => [0,1,2,3,4,5,6]
1.110 albertel 515: },
516: limit => {
517: default => 'closed',
518: test => sub {$_[0]=~/^(closed|x1|x2|y1|y2)$/},
519: description => 'point to fill -- for filledcurves',
520: edit_type => 'choice',
521: choices => ['closed','x1','x2','y1','y2']
522: },
1.1 matthew 523: );
524:
1.21 matthew 525: ###################################################################
526: ## ##
527: ## parsing and edit rendering ##
528: ## ##
529: ###################################################################
1.107 foxr 530:
531: undef %Apache::lonplot::plot;
532: my (%key,%axis,$title,$xlabel,$ylabel,@labels,@curves,%xtics,%ytics);
1.1 matthew 533:
1.47 matthew 534: sub start_gnuplot {
1.107 foxr 535: undef(%Apache::lonplot::plot); undef(%key); undef(%axis);
1.89 matthew 536: undef($title); undef($xlabel); undef($ylabel);
537: undef(@labels); undef(@curves);
538: undef(%xtics); undef(%ytics);
1.6 matthew 539: #
1.1 matthew 540: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
541: my $result='';
1.25 matthew 542: &Apache::lonxml::register('Apache::lonplot',
1.45 matthew 543: ('title','xlabel','ylabel','key','axis','label','curve',
544: 'xtics','ytics'));
1.29 matthew 545: push (@Apache::lonxml::namespace,'lonplot');
1.51 matthew 546: if ($target eq 'web' || $target eq 'tex') {
1.107 foxr 547: &get_attributes(\%Apache::lonplot::plot,\%gnuplot_defaults,$parstack,$safeeval,
1.17 matthew 548: $tagstack->[-1]);
1.20 matthew 549: } elsif ($target eq 'edit') {
1.47 matthew 550: $result .= &Apache::edit::tag_start($target,$token,'GnuPlot');
551: $result .= &edit_attributes($target,$token,\%gnuplot_defaults,
1.116 albertel 552: \@gnuplot_edit_order)
553: .&Apache::edit::end_row()
554: .&Apache::edit::start_spanning_row();
1.20 matthew 555: } elsif ($target eq 'modified') {
556: my $constructtag=&Apache::edit::get_new_args
1.47 matthew 557: ($token,$parstack,$safeeval,keys(%gnuplot_defaults));
1.20 matthew 558: if ($constructtag) {
559: $result = &Apache::edit::rebuild_tag($token);
560: }
1.4 matthew 561: }
1.21 matthew 562: return $result;
1.1 matthew 563: }
564:
1.47 matthew 565: sub end_gnuplot {
1.1 matthew 566: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
567: pop @Apache::lonxml::namespace;
1.4 matthew 568: &Apache::lonxml::deregister('Apache::lonplot',
569: ('title','xlabel','ylabel','key','axis','label','curve'));
570: my $result = '';
1.56 albertel 571: my $randnumber;
572: # need to call rand everytime start_script would evaluate, as the
573: # safe space rand number generator and the global rand generator
1.95 www 574: # are not separate
1.56 albertel 575: if ($target eq 'web' || $target eq 'tex' || $target eq 'grade' ||
576: $target eq 'answer') {
577: $randnumber=int(rand(1000));
578: }
1.51 matthew 579: if ($target eq 'web' || $target eq 'tex') {
1.21 matthew 580: &check_inputs(); # Make sure we have all the data we need
1.13 matthew 581: ##
582: ## Determine filename
1.4 matthew 583: my $tmpdir = '/home/httpd/perl/tmp/';
1.106 albertel 584: my $filename = $env{'user.name'}.'_'.$env{'user.domain'}.
1.69 matthew 585: '_'.time.'_'.$$.$randnumber.'_plot';
1.4 matthew 586: ## Write the plot description to the file
1.51 matthew 587: &write_gnuplot_file($tmpdir,$filename,$target);
1.113 www 588: $filename = &escape($filename);
1.4 matthew 589: ## return image tag for the plot
1.51 matthew 590: if ($target eq 'web') {
591: $result .= <<"ENDIMAGE";
1.114 albertel 592: <img src = "/cgi-bin/plot.$weboutputformat?file=$filename.data"
1.107 foxr 593: width = "$Apache::lonplot::plot{'width'}"
594: height = "$Apache::lonplot::plot{'height'}"
595: align = "$Apache::lonplot::plot{'align'}"
596: alt = "$Apache::lonplot::plot{'alttag'}" />
1.12 matthew 597: ENDIMAGE
1.51 matthew 598: } elsif ($target eq 'tex') {
1.107 foxr 599: &Apache::lonxml::debug(" gnuplot wid = $Apache::lonplot::plot{'width'}");
600: &Apache::lonxml::debug(" gnuplot ht = $Apache::lonplot::plot{'height'}");
1.91 albertel 601: #might be inside the safe space, register the URL for later
602: &Apache::lonxml::register_ssi("/cgi-bin/plot.gif?file=$filename.data&output=eps");
1.111 albertel 603: $result = "%DYNAMICIMAGE:$Apache::lonplot::plot{'width'}:$Apache::lonplot::plot{'height'}:$Apache::lonplot::plot{'texwidth'}\n";
1.109 foxr 604: $result .= '\graphicspath{{/home/httpd/perl/tmp/}}'."\n";
1.113 www 605: $result .= '\includegraphics[width='.$Apache::lonplot::plot{'texwidth'}.' mm]{'.&unescape($filename).'.eps}';
1.51 matthew 606: }
1.20 matthew 607: } elsif ($target eq 'edit') {
1.21 matthew 608: $result.=&Apache::edit::tag_end($target,$token);
1.4 matthew 609: }
1.1 matthew 610: return $result;
611: }
1.2 matthew 612:
1.45 matthew 613:
614: ##--------------------------------------------------------------- xtics
615: sub start_xtics {
616: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
617: my $result='';
1.51 matthew 618: if ($target eq 'web' || $target eq 'tex') {
1.45 matthew 619: &get_attributes(\%xtics,\%tic_defaults,$parstack,$safeeval,
620: $tagstack->[-1]);
621: } elsif ($target eq 'edit') {
622: $result .= &Apache::edit::tag_start($target,$token,'xtics');
623: $result .= &edit_attributes($target,$token,\%tic_defaults,
624: \@tic_edit_order);
625: } elsif ($target eq 'modified') {
626: my $constructtag=&Apache::edit::get_new_args
627: ($token,$parstack,$safeeval,keys(%tic_defaults));
628: if ($constructtag) {
629: $result = &Apache::edit::rebuild_tag($token);
630: }
631: }
632: return $result;
633: }
634:
635: sub end_xtics {
636: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
637: my $result = '';
1.51 matthew 638: if ($target eq 'web' || $target eq 'tex') {
1.45 matthew 639: } elsif ($target eq 'edit') {
640: $result.=&Apache::edit::tag_end($target,$token);
641: }
642: return $result;
643: }
644:
645: ##--------------------------------------------------------------- ytics
646: sub start_ytics {
647: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
648: my $result='';
1.51 matthew 649: if ($target eq 'web' || $target eq 'tex') {
1.45 matthew 650: &get_attributes(\%ytics,\%tic_defaults,$parstack,$safeeval,
651: $tagstack->[-1]);
652: } elsif ($target eq 'edit') {
653: $result .= &Apache::edit::tag_start($target,$token,'ytics');
654: $result .= &edit_attributes($target,$token,\%tic_defaults,
655: \@tic_edit_order);
656: } elsif ($target eq 'modified') {
657: my $constructtag=&Apache::edit::get_new_args
658: ($token,$parstack,$safeeval,keys(%tic_defaults));
659: if ($constructtag) {
660: $result = &Apache::edit::rebuild_tag($token);
661: }
662: }
663: return $result;
664: }
665:
666: sub end_ytics {
667: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
668: my $result = '';
1.51 matthew 669: if ($target eq 'web' || $target eq 'tex') {
1.45 matthew 670: } elsif ($target eq 'edit') {
671: $result.=&Apache::edit::tag_end($target,$token);
672: }
673: return $result;
674: }
675:
1.119 ! albertel 676: ##-----------------------------------------------------------------font
! 677: sub get_font {
! 678: my ($size);
! 679: if ( $Apache::lonplot::plot{'font'} =~ /^(small|medium|large)/) {
! 680: if ( $Apache::lonplot::plot{'font'} eq 'small') {
! 681: $size = '5';
! 682: } elsif ( $Apache::lonplot::plot{'font'} eq 'medium') {
! 683: $size = '9';
! 684: } elsif ( $Apache::lonplot::plot{'font'} eq 'large') {
! 685: $size = '15';
! 686: } else {
! 687: $size = '9';
! 688: }
! 689: } else {
! 690: $size = $Apache::lonplot::plot{'font'};
! 691: }
! 692: return ($size);
! 693: }
1.45 matthew 694:
1.1 matthew 695: ##----------------------------------------------------------------- key
696: sub start_key {
697: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
698: my $result='';
1.51 matthew 699: if ($target eq 'web' || $target eq 'tex') {
1.17 matthew 700: &get_attributes(\%key,\%key_defaults,$parstack,$safeeval,
1.11 matthew 701: $tagstack->[-1]);
1.20 matthew 702: } elsif ($target eq 'edit') {
1.25 matthew 703: $result .= &Apache::edit::tag_start($target,$token,'Plot Key');
1.21 matthew 704: $result .= &edit_attributes($target,$token,\%key_defaults);
1.20 matthew 705: } elsif ($target eq 'modified') {
706: my $constructtag=&Apache::edit::get_new_args
1.24 matthew 707: ($token,$parstack,$safeeval,keys(%key_defaults));
1.20 matthew 708: if ($constructtag) {
709: $result = &Apache::edit::rebuild_tag($token);
710: }
1.4 matthew 711: }
1.1 matthew 712: return $result;
713: }
714:
715: sub end_key {
716: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
717: my $result = '';
1.51 matthew 718: if ($target eq 'web' || $target eq 'tex') {
1.20 matthew 719: } elsif ($target eq 'edit') {
1.21 matthew 720: $result.=&Apache::edit::tag_end($target,$token);
1.4 matthew 721: }
1.1 matthew 722: return $result;
723: }
1.21 matthew 724:
1.1 matthew 725: ##------------------------------------------------------------------- title
726: sub start_title {
727: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
728: my $result='';
1.51 matthew 729: if ($target eq 'web' || $target eq 'tex') {
1.112 albertel 730: $title = &Apache::lonxml::get_all_text("/title",$parser,$style);
1.58 matthew 731: $title=&Apache::run::evaluate($title,$safeeval,$$parstack[-1]);
1.49 matthew 732: $title =~ s/\n/ /g;
1.32 matthew 733: if (length($title) > $max_str_len) {
734: $title = substr($title,0,$max_str_len);
735: }
1.20 matthew 736: } elsif ($target eq 'edit') {
1.25 matthew 737: $result.=&Apache::edit::tag_start($target,$token,'Plot Title');
1.112 albertel 738: my $text=&Apache::lonxml::get_all_text("/title",$parser,$style);
1.116 albertel 739: $result.=&Apache::edit::editline('',$text,'',60);
1.20 matthew 740: } elsif ($target eq 'modified') {
1.42 matthew 741: $result.=&Apache::edit::rebuild_tag($token);
1.93 albertel 742: $result.=&Apache::edit::modifiedfield("/title",$parser);
1.4 matthew 743: }
1.1 matthew 744: return $result;
745: }
746:
747: sub end_title {
748: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
749: my $result = '';
1.51 matthew 750: if ($target eq 'web' || $target eq 'tex') {
1.20 matthew 751: } elsif ($target eq 'edit') {
1.27 matthew 752: $result.=&Apache::edit::tag_end($target,$token);
1.4 matthew 753: }
1.1 matthew 754: return $result;
755: }
756: ##------------------------------------------------------------------- xlabel
757: sub start_xlabel {
758: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
759: my $result='';
1.51 matthew 760: if ($target eq 'web' || $target eq 'tex') {
1.112 albertel 761: $xlabel = &Apache::lonxml::get_all_text("/xlabel",$parser,$style);
1.58 matthew 762: $xlabel=&Apache::run::evaluate($xlabel,$safeeval,$$parstack[-1]);
1.49 matthew 763: $xlabel =~ s/\n/ /g;
1.32 matthew 764: if (length($xlabel) > $max_str_len) {
765: $xlabel = substr($xlabel,0,$max_str_len);
766: }
1.20 matthew 767: } elsif ($target eq 'edit') {
1.25 matthew 768: $result.=&Apache::edit::tag_start($target,$token,'Plot Xlabel');
1.112 albertel 769: my $text=&Apache::lonxml::get_all_text("/xlabel",$parser,$style);
1.116 albertel 770: $result.=&Apache::edit::editline('',$text,'',60);
1.20 matthew 771: } elsif ($target eq 'modified') {
1.42 matthew 772: $result.=&Apache::edit::rebuild_tag($token);
1.93 albertel 773: $result.=&Apache::edit::modifiedfield("/xlabel",$parser);
1.4 matthew 774: }
1.1 matthew 775: return $result;
776: }
777:
778: sub end_xlabel {
779: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
780: my $result = '';
1.51 matthew 781: if ($target eq 'web' || $target eq 'tex') {
1.20 matthew 782: } elsif ($target eq 'edit') {
1.27 matthew 783: $result.=&Apache::edit::tag_end($target,$token);
1.4 matthew 784: }
1.1 matthew 785: return $result;
786: }
1.21 matthew 787:
1.1 matthew 788: ##------------------------------------------------------------------- ylabel
789: sub start_ylabel {
790: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
791: my $result='';
1.51 matthew 792: if ($target eq 'web' || $target eq 'tex') {
1.112 albertel 793: $ylabel = &Apache::lonxml::get_all_text("/ylabel",$parser,$style);
1.58 matthew 794: $ylabel = &Apache::run::evaluate($ylabel,$safeeval,$$parstack[-1]);
1.49 matthew 795: $ylabel =~ s/\n/ /g;
1.32 matthew 796: if (length($ylabel) > $max_str_len) {
797: $ylabel = substr($ylabel,0,$max_str_len);
798: }
1.20 matthew 799: } elsif ($target eq 'edit') {
1.25 matthew 800: $result .= &Apache::edit::tag_start($target,$token,'Plot Ylabel');
1.112 albertel 801: my $text = &Apache::lonxml::get_all_text("/ylabel",$parser,$style);
1.116 albertel 802: $result .= &Apache::edit::editline('',$text,'',60);
1.20 matthew 803: } elsif ($target eq 'modified') {
1.42 matthew 804: $result.=&Apache::edit::rebuild_tag($token);
1.93 albertel 805: $result.=&Apache::edit::modifiedfield("/ylabel",$parser);
1.4 matthew 806: }
1.1 matthew 807: return $result;
808: }
809:
810: sub end_ylabel {
811: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
812: my $result = '';
1.51 matthew 813: if ($target eq 'web' || $target eq 'tex') {
1.20 matthew 814: } elsif ($target eq 'edit') {
1.27 matthew 815: $result.=&Apache::edit::tag_end($target,$token);
1.4 matthew 816: }
1.1 matthew 817: return $result;
818: }
1.21 matthew 819:
1.1 matthew 820: ##------------------------------------------------------------------- label
821: sub start_label {
822: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
823: my $result='';
1.51 matthew 824: if ($target eq 'web' || $target eq 'tex') {
1.17 matthew 825: my %label;
826: &get_attributes(\%label,\%label_defaults,$parstack,$safeeval,
1.11 matthew 827: $tagstack->[-1]);
1.112 albertel 828: my $text = &Apache::lonxml::get_all_text("/label",$parser,$style);
1.58 matthew 829: $text = &Apache::run::evaluate($text,$safeeval,$$parstack[-1]);
1.49 matthew 830: $text =~ s/\n/ /g;
1.32 matthew 831: $text = substr($text,0,$max_str_len) if (length($text) > $max_str_len);
832: $label{'text'} = $text;
1.17 matthew 833: push(@labels,\%label);
1.20 matthew 834: } elsif ($target eq 'edit') {
1.25 matthew 835: $result .= &Apache::edit::tag_start($target,$token,'Plot Label');
1.21 matthew 836: $result .= &edit_attributes($target,$token,\%label_defaults);
1.112 albertel 837: my $text = &Apache::lonxml::get_all_text("/label",$parser,$style);
1.39 matthew 838: $result .= &Apache::edit::end_row().
839: &Apache::edit::start_spanning_row().
1.63 albertel 840: &Apache::edit::editline('',$text,'',60);
1.20 matthew 841: } elsif ($target eq 'modified') {
1.42 matthew 842: &Apache::edit::get_new_args
1.24 matthew 843: ($token,$parstack,$safeeval,keys(%label_defaults));
1.42 matthew 844: $result.=&Apache::edit::rebuild_tag($token);
1.93 albertel 845: $result.=&Apache::edit::modifiedfield("/label",$parser);
1.4 matthew 846: }
1.1 matthew 847: return $result;
848: }
849:
850: sub end_label {
851: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
852: my $result = '';
1.51 matthew 853: if ($target eq 'web' || $target eq 'tex') {
1.20 matthew 854: } elsif ($target eq 'edit') {
1.21 matthew 855: $result.=&Apache::edit::tag_end($target,$token);
1.4 matthew 856: }
1.1 matthew 857: return $result;
858: }
859:
860: ##------------------------------------------------------------------- curve
861: sub start_curve {
862: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
863: my $result='';
1.25 matthew 864: &Apache::lonxml::register('Apache::lonplot',('function','data'));
865: push (@Apache::lonxml::namespace,'curve');
1.51 matthew 866: if ($target eq 'web' || $target eq 'tex') {
1.17 matthew 867: my %curve;
868: &get_attributes(\%curve,\%curve_defaults,$parstack,$safeeval,
1.11 matthew 869: $tagstack->[-1]);
1.17 matthew 870: push (@curves,\%curve);
1.20 matthew 871: } elsif ($target eq 'edit') {
1.26 matthew 872: $result .= &Apache::edit::tag_start($target,$token,'Curve');
1.60 matthew 873: $result .= &edit_attributes($target,$token,\%curve_defaults,
1.116 albertel 874: \@curve_edit_order)
875: .&Apache::edit::end_row()
876: .&Apache::edit::start_spanning_row();
877:
1.20 matthew 878: } elsif ($target eq 'modified') {
879: my $constructtag=&Apache::edit::get_new_args
1.35 matthew 880: ($token,$parstack,$safeeval,keys(%curve_defaults));
1.20 matthew 881: if ($constructtag) {
882: $result = &Apache::edit::rebuild_tag($token);
883: }
1.4 matthew 884: }
1.1 matthew 885: return $result;
886: }
887:
888: sub end_curve {
889: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
890: my $result = '';
1.25 matthew 891: pop @Apache::lonxml::namespace;
892: &Apache::lonxml::deregister('Apache::lonplot',('function','data'));
1.51 matthew 893: if ($target eq 'web' || $target eq 'tex') {
1.20 matthew 894: } elsif ($target eq 'edit') {
1.21 matthew 895: $result.=&Apache::edit::tag_end($target,$token);
1.4 matthew 896: }
1.1 matthew 897: return $result;
898: }
1.21 matthew 899:
1.1 matthew 900: ##------------------------------------------------------------ curve function
901: sub start_function {
902: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
903: my $result='';
1.51 matthew 904: if ($target eq 'web' || $target eq 'tex') {
1.17 matthew 905: if (exists($curves[-1]->{'data'})) {
1.85 matthew 906: &Apache::lonxml::warning
907: ('Use of the <b>curve function</b> tag precludes use of '.
908: ' the <b>curve data</b> tag. '.
909: 'The curve data tag will be omitted in favor of the '.
910: 'curve function declaration.');
1.17 matthew 911: delete $curves[-1]->{'data'} ;
912: }
1.112 albertel 913: my $function = &Apache::lonxml::get_all_text("/function",$parser,
914: $style);
1.58 matthew 915: $function = &Apache::run::evaluate($function,$safeeval,$$parstack[-1]);
916: $curves[-1]->{'function'} = $function;
1.20 matthew 917: } elsif ($target eq 'edit') {
1.37 matthew 918: $result .= &Apache::edit::tag_start($target,$token,'Gnuplot compatible curve function');
1.112 albertel 919: my $text = &Apache::lonxml::get_all_text("/function",$parser,$style);
1.116 albertel 920: $result .= &Apache::edit::editline('',$text,'',60);
1.20 matthew 921: } elsif ($target eq 'modified') {
1.42 matthew 922: $result.=&Apache::edit::rebuild_tag($token);
1.93 albertel 923: $result.=&Apache::edit::modifiedfield("/function",$parser);
1.4 matthew 924: }
1.1 matthew 925: return $result;
926: }
927:
928: sub end_function {
929: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
930: my $result = '';
1.51 matthew 931: if ($target eq 'web' || $target eq 'tex') {
1.20 matthew 932: } elsif ($target eq 'edit') {
1.26 matthew 933: $result .= &Apache::edit::end_table();
1.4 matthew 934: }
1.1 matthew 935: return $result;
936: }
1.21 matthew 937:
1.1 matthew 938: ##------------------------------------------------------------ curve data
939: sub start_data {
940: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
941: my $result='';
1.51 matthew 942: if ($target eq 'web' || $target eq 'tex') {
1.17 matthew 943: if (exists($curves[-1]->{'function'})) {
1.85 matthew 944: &Apache::lonxml::warning
945: ('Use of the <b>curve function</b> tag precludes use of '.
946: ' the <b>curve data</b> tag. '.
947: 'The curve function tag will be omitted in favor of the '.
948: 'curve data declaration.');
1.17 matthew 949: delete($curves[-1]->{'function'});
950: }
1.112 albertel 951: my $datatext = &Apache::lonxml::get_all_text("/data",$parser,$style);
1.58 matthew 952: $datatext=&Apache::run::evaluate($datatext,$safeeval,$$parstack[-1]);
1.40 matthew 953: # Deal with cases where we're given an array...
954: if ($datatext =~ /^\@/) {
955: $datatext = &Apache::run::run('return "'.$datatext.'"',
956: $safeeval,1);
957: }
1.49 matthew 958: $datatext =~ s/\s+/ /g;
1.17 matthew 959: # Need to do some error checking on the @data array -
960: # make sure it's all numbers and make sure each array
961: # is of the same length.
962: my @data;
1.35 matthew 963: if ($datatext =~ /,/) { # comma deliminated
1.17 matthew 964: @data = split /,/,$datatext;
1.95 www 965: } else { # Assume it's space separated.
1.17 matthew 966: @data = split / /,$datatext;
967: }
968: for (my $i=0;$i<=$#data;$i++) {
969: # Check that it's non-empty
1.19 matthew 970: if (! defined($data[$i])) {
971: &Apache::lonxml::warning(
1.85 matthew 972: 'undefined curve data value. Replacing with '.
1.19 matthew 973: ' pi/e = 1.15572734979092');
974: $data[$i] = 1.15572734979092;
975: }
1.17 matthew 976: # Check that it's a number
1.19 matthew 977: if (! &$real_test($data[$i]) & ! &$int_test($data[$i])) {
978: &Apache::lonxml::warning(
1.85 matthew 979: 'Bad curve data value of '.$data[$i].' Replacing with '.
1.19 matthew 980: ' pi/e = 1.15572734979092');
981: $data[$i] = 1.15572734979092;
982: }
1.17 matthew 983: }
1.35 matthew 984: # complain if the number of data points is not the same as
985: # in previous sets of data.
1.36 matthew 986: if (($curves[-1]->{'data'}) && ($#data != $#{@{$curves[-1]->{'data'}->[0]}})){
1.35 matthew 987: &Apache::lonxml::warning
988: ('Number of data points is not consistent with previous '.
989: 'number of data points');
990: }
1.17 matthew 991: push @{$curves[-1]->{'data'}},\@data;
1.20 matthew 992: } elsif ($target eq 'edit') {
1.37 matthew 993: $result .= &Apache::edit::tag_start($target,$token,'Comma or space deliminated curve data');
1.112 albertel 994: my $text = &Apache::lonxml::get_all_text("/data",$parser,$style);
1.116 albertel 995: $result .= &Apache::edit::editline('',$text,'',60);
1.20 matthew 996: } elsif ($target eq 'modified') {
1.42 matthew 997: $result.=&Apache::edit::rebuild_tag($token);
1.93 albertel 998: $result.=&Apache::edit::modifiedfield("/data",$parser);
1.4 matthew 999: }
1.1 matthew 1000: return $result;
1001: }
1002:
1003: sub end_data {
1004: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1005: my $result = '';
1.51 matthew 1006: if ($target eq 'web' || $target eq 'tex') {
1.20 matthew 1007: } elsif ($target eq 'edit') {
1.26 matthew 1008: $result .= &Apache::edit::end_table();
1.4 matthew 1009: }
1.1 matthew 1010: return $result;
1011: }
1012:
1013: ##------------------------------------------------------------------- axis
1014: sub start_axis {
1015: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1016: my $result='';
1.51 matthew 1017: if ($target eq 'web' || $target eq 'tex') {
1.17 matthew 1018: &get_attributes(\%axis,\%axis_defaults,$parstack,$safeeval,
1019: $tagstack->[-1]);
1.20 matthew 1020: } elsif ($target eq 'edit') {
1.25 matthew 1021: $result .= &Apache::edit::tag_start($target,$token,'Plot Axes');
1.65 matthew 1022: $result .= &edit_attributes($target,$token,\%axis_defaults,
1023: \@axis_edit_order);
1.20 matthew 1024: } elsif ($target eq 'modified') {
1.29 matthew 1025: my $constructtag=&Apache::edit::get_new_args
1026: ($token,$parstack,$safeeval,keys(%axis_defaults));
1027: if ($constructtag) {
1028: $result = &Apache::edit::rebuild_tag($token);
1029: }
1.4 matthew 1030: }
1.1 matthew 1031: return $result;
1032: }
1033:
1034: sub end_axis {
1035: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1036: my $result = '';
1.51 matthew 1037: if ($target eq 'web' || $target eq 'tex') {
1.20 matthew 1038: } elsif ($target eq 'edit') {
1.21 matthew 1039: $result.=&Apache::edit::tag_end($target,$token);
1.20 matthew 1040: } elsif ($target eq 'modified') {
1.4 matthew 1041: }
1.1 matthew 1042: return $result;
1043: }
1044:
1.21 matthew 1045: ###################################################################
1046: ## ##
1047: ## Utility Functions ##
1048: ## ##
1049: ###################################################################
1050:
1.13 matthew 1051: ##----------------------------------------------------------- set_defaults
1052: sub set_defaults {
1.21 matthew 1053: my ($var,$defaults) = @_;
1.13 matthew 1054: my $key;
1.24 matthew 1055: foreach $key (keys(%$defaults)) {
1.13 matthew 1056: $var->{$key} = $defaults->{$key}->{'default'};
1057: }
1058: }
1059:
1.1 matthew 1060: ##------------------------------------------------------------------- misc
1.2 matthew 1061: sub get_attributes{
1.21 matthew 1062: my ($values,$defaults,$parstack,$safeeval,$tag) = @_;
1.24 matthew 1063: foreach my $attr (keys(%{$defaults})) {
1.92 matthew 1064: if ($attr eq 'texwidth' || $attr eq 'texfont') {
1.86 albertel 1065: $values->{$attr} =
1066: &Apache::lonxml::get_param($attr,$parstack,$safeeval,undef,1);
1067: } else {
1068: $values->{$attr} =
1069: &Apache::lonxml::get_param($attr,$parstack,$safeeval);
1070: }
1.10 matthew 1071: if ($values->{$attr} eq '' | !defined($values->{$attr})) {
1.11 matthew 1072: $values->{$attr} = $defaults->{$attr}->{'default'};
1.6 matthew 1073: next;
1074: }
1.10 matthew 1075: my $test = $defaults->{$attr}->{'test'};
1076: if (! &$test($values->{$attr})) {
1.6 matthew 1077: &Apache::lonxml::warning
1078: ($tag.':'.$attr.': Bad value.'.'Replacing your value with : '
1.11 matthew 1079: .$defaults->{$attr}->{'default'} );
1080: $values->{$attr} = $defaults->{$attr}->{'default'};
1.10 matthew 1081: }
1.2 matthew 1082: }
1.11 matthew 1083: return ;
1.6 matthew 1084: }
1.40 matthew 1085:
1.15 matthew 1086: ##------------------------------------------------------- write_gnuplot_file
1.6 matthew 1087: sub write_gnuplot_file {
1.51 matthew 1088: my ($tmpdir,$filename,$target)= @_;
1.6 matthew 1089: my $gnuplot_input = '';
1.10 matthew 1090: my $curve;
1.107 foxr 1091: my $pt = $Apache::lonplot::plot{'texfont'};
1.100 matthew 1092: #
1093: # Check to be sure we do not have any empty curves
1094: my @curvescopy;
1095: foreach my $curve (@curves) {
1096: if (exists($curve->{'function'})) {
1097: if ($curve->{'function'} !~ /^\s*$/) {
1098: push(@curvescopy,$curve);
1099: }
1100: } elsif (exists($curve->{'data'})) {
1101: foreach my $data (@{$curve->{'data'}}) {
1102: if (scalar(@$data) > 0) {
1103: push(@curvescopy,$curve);
1104: last;
1105: }
1106: }
1107: }
1108: }
1109: @curves = @curvescopy;
1.6 matthew 1110: # Collect all the colors
1111: my @Colors;
1.107 foxr 1112: push @Colors, $Apache::lonplot::plot{'bgcolor'};
1113: push @Colors, $Apache::lonplot::plot{'fgcolor'};
1114: push @Colors, (defined($axis{'color'})?$axis{'color'}:$Apache::lonplot::plot{'fgcolor'});
1.9 matthew 1115: foreach $curve (@curves) {
1116: push @Colors, ($curve->{'color'} ne '' ?
1117: $curve->{'color'} :
1.107 foxr 1118: $Apache::lonplot::plot{'fgcolor'} );
1.6 matthew 1119: }
1120: # set term
1.51 matthew 1121: if ($target eq 'web') {
1.119 ! albertel 1122: $gnuplot_input .= 'set term '.$weboutputformat .' enhanced ';
1.107 foxr 1123: $gnuplot_input .= 'transparent ' if ($Apache::lonplot::plot{'transparent'} eq 'on');
1124: $gnuplot_input .= $Apache::lonplot::plot{'font'} . ' ';
1125: $gnuplot_input .= 'size '.$Apache::lonplot::plot{'width'}.','.$Apache::lonplot::plot{'height'}.' ';
1.51 matthew 1126: $gnuplot_input .= "@Colors\n";
1127: # set output
1128: $gnuplot_input .= "set output\n";
1129: } elsif ($target eq 'tex') {
1.119 ! albertel 1130: $gnuplot_input .= "set term postscript eps enhanced $Apache::lonplot::plot{'plotcolor'} solid \"Helvetica\" $pt \n";
1.68 sakharuk 1131: $gnuplot_input .= "set output \"/home/httpd/perl/tmp/".
1.113 www 1132: &unescape($filename).".eps\"\n";
1.87 matthew 1133: }
1.115 albertel 1134: # cartesian or polar plot?
1.107 foxr 1135: if (lc($Apache::lonplot::plot{'plottype'}) eq 'polar') {
1.87 matthew 1136: $gnuplot_input .= 'set polar'.$/;
1137: } else {
1138: # Assume Cartesian
1.51 matthew 1139: }
1.115 albertel 1140: # cartesian or polar grid?
1141: if (lc($Apache::lonplot::plot{'gridtype'}) eq 'polar') {
1142: $gnuplot_input .= 'set grid polar'.$/;
1.118 albertel 1143: } elsif (lc($Apache::lonplot::plot{'gridtype'}) eq 'linear-log') {
1144: $gnuplot_input .= 'set logscale x'.$/;
1145: } elsif (lc($Apache::lonplot::plot{'gridtype'}) eq 'log-linear') {
1146: $gnuplot_input .= 'set logscale y'.$/;
1147: } elsif (lc($Apache::lonplot::plot{'gridtype'}) eq 'log-log') {
1148: $gnuplot_input .= 'set logscale x'.$/;
1149: $gnuplot_input .= 'set logscale y'.$/;
1.115 albertel 1150: } else {
1151: # Assume Cartesian
1152: }
1.110 albertel 1153: # solid or pattern for boxes?
1154: if (lc($Apache::lonplot::plot{'fillstyle'}) eq 'solid') {
1155: $gnuplot_input .= 'set style fill solid '.
1156: $Apache::lonplot::plot{'solid'}.$Apache::lonplot::plot{'box_border'}.$/;
1157: } elsif (lc($Apache::lonplot::plot{'fillstyle'}) eq 'pattern') {
1158: $gnuplot_input .= 'set style fill pattern '.$Apache::lonplot::plot{'pattern'}.$Apache::lonplot::plot{'box_border'}.$/;
1159: } elsif (lc($Apache::lonplot::plot{'fillstyle'}) eq 'empty') {
1160: }
1.101 matthew 1161: # margin
1.107 foxr 1162: if (lc($Apache::lonplot::plot{'lmargin'}) ne 'default') {
1163: $gnuplot_input .= 'set lmargin '.$Apache::lonplot::plot{'lmargin'}.$/;
1.101 matthew 1164: }
1.107 foxr 1165: if (lc($Apache::lonplot::plot{'rmargin'}) ne 'default') {
1166: $gnuplot_input .= 'set rmargin '.$Apache::lonplot::plot{'rmargin'}.$/;
1.101 matthew 1167: }
1.107 foxr 1168: if (lc($Apache::lonplot::plot{'tmargin'}) ne 'default') {
1169: $gnuplot_input .= 'set tmargin '.$Apache::lonplot::plot{'tmargin'}.$/;
1.101 matthew 1170: }
1.107 foxr 1171: if (lc($Apache::lonplot::plot{'bmargin'}) ne 'default') {
1172: $gnuplot_input .= 'set bmargin '.$Apache::lonplot::plot{'bmargin'}.$/;
1.101 matthew 1173: }
1174: # tic scales
1175: $gnuplot_input .= 'set ticscale '.
1.107 foxr 1176: $Apache::lonplot::plot{'major_ticscale'}.' '.$Apache::lonplot::plot{'minor_ticscale'}.$/;
1.110 albertel 1177: #boxwidth
1178: if (lc($Apache::lonplot::plot{'boxwidth'}) ne '') {
1179: $gnuplot_input .= 'set boxwidth '.$Apache::lonplot::plot{'boxwidth'}.$/;
1180: }
1181: # gridlayer
1182: $gnuplot_input .= 'set grid noxtics noytics front '.$/
1183: if ($Apache::lonplot::plot{'gridlayer'} eq 'on');
1184:
1.7 matthew 1185: # grid
1.107 foxr 1186: $gnuplot_input .= 'set grid'.$/ if ($Apache::lonplot::plot{'grid'} eq 'on');
1.7 matthew 1187: # border
1.107 foxr 1188: $gnuplot_input .= ($Apache::lonplot::plot{'border'} eq 'on'?
1.9 matthew 1189: 'set border'.$/ :
1.67 matthew 1190: 'set noborder'.$/ );
1.77 matthew 1191: # sampling rate for non-data curves
1.107 foxr 1192: $gnuplot_input .= "set samples $Apache::lonplot::plot{'samples'}\n";
1.67 matthew 1193: # title, xlabel, ylabel
1.45 matthew 1194: # titles
1.89 matthew 1195: if ($target eq 'tex') {
1.92 matthew 1196: $gnuplot_input .= "set title \"$title\" font \"Helvetica,".$pt."pt\"\n" if (defined($title)) ;
1197: $gnuplot_input .= "set xlabel \"$xlabel\" font \"Helvetica,".$pt."pt\" \n" if (defined($xlabel));
1198: $gnuplot_input .= "set ylabel \"$ylabel\" font \"Helvetica,".$pt."pt\"\n" if (defined($ylabel));
1.89 matthew 1199: } else {
1200: $gnuplot_input .= "set title \"$title\" \n" if (defined($title)) ;
1201: $gnuplot_input .= "set xlabel \"$xlabel\" \n" if (defined($xlabel));
1202: $gnuplot_input .= "set ylabel \"$ylabel\" \n" if (defined($ylabel));
1203: }
1.45 matthew 1204: # tics
1205: if (%xtics) {
1206: $gnuplot_input .= "set xtics $xtics{'location'} ";
1.46 matthew 1207: $gnuplot_input .= ( $xtics{'mirror'} eq 'on'?"mirror ":"nomirror ");
1.45 matthew 1208: $gnuplot_input .= "$xtics{'start'}, ";
1209: $gnuplot_input .= "$xtics{'increment'}, ";
1210: $gnuplot_input .= "$xtics{'end'}\n";
1.89 matthew 1211: if ($xtics{'minorfreq'} != 0) {
1212: $gnuplot_input .= "set mxtics ".$xtics{'minorfreq'}."\n";
1213: }
1.45 matthew 1214: }
1215: if (%ytics) {
1216: $gnuplot_input .= "set ytics $ytics{'location'} ";
1.46 matthew 1217: $gnuplot_input .= ( $ytics{'mirror'} eq 'on'?"mirror ":"nomirror ");
1.45 matthew 1218: $gnuplot_input .= "$ytics{'start'}, ";
1219: $gnuplot_input .= "$ytics{'increment'}, ";
1220: $gnuplot_input .= "$ytics{'end'}\n";
1.89 matthew 1221: if ($ytics{'minorfreq'} != 0) {
1222: $gnuplot_input .= "set mytics ".$ytics{'minorfreq'}."\n";
1223: }
1.45 matthew 1224: }
1225: # axis
1.23 matthew 1226: if (%axis) {
1.13 matthew 1227: $gnuplot_input .= "set xrange \[$axis{'xmin'}:$axis{'xmax'}\]\n";
1228: $gnuplot_input .= "set yrange \[$axis{'ymin'}:$axis{'ymax'}\]\n";
1.6 matthew 1229: }
1230: # Key
1.23 matthew 1231: if (%key) {
1.9 matthew 1232: $gnuplot_input .= 'set key '.$key{'pos'}.' ';
1233: if ($key{'title'} ne '') {
1.67 matthew 1234: $gnuplot_input .= 'title "'.$key{'title'}.'" ';
1.11 matthew 1235: }
1236: $gnuplot_input .= ($key{'box'} eq 'on' ? 'box ' : 'nobox ').$/;
1.6 matthew 1237: } else {
1.9 matthew 1238: $gnuplot_input .= 'set nokey'.$/;
1.13 matthew 1239: }
1.6 matthew 1240: # labels
1.10 matthew 1241: my $label;
1.6 matthew 1242: foreach $label (@labels) {
1243: $gnuplot_input .= 'set label "'.$label->{'text'}.'" at '.
1.103 matthew 1244: $label->{'xpos'}.','.$label->{'ypos'}.' '.$label->{'justify'};
1245: if ($target eq 'tex') {
1246: $gnuplot_input .=' font "Helvetica,'.$pt.'pt"' ;
1247: }
1248: $gnuplot_input .= $/;
1.6 matthew 1249: }
1.74 matthew 1250: if ($target eq 'tex') {
1.107 foxr 1251: $gnuplot_input .="set size 1,".$Apache::lonplot::plot{'height'}/$Apache::lonplot::plot{'width'}*1.38;
1.74 matthew 1252: $gnuplot_input .="\n";
1253: }
1.6 matthew 1254: # curves
1255: $gnuplot_input .= 'plot ';
1.9 matthew 1256: for (my $i = 0;$i<=$#curves;$i++) {
1257: $curve = $curves[$i];
1258: $gnuplot_input.= ', ' if ($i > 0);
1.119 ! albertel 1259: if ($target eq 'tex') {
! 1260: $curve->{'linewidth'} *= 2;
! 1261: }
1.6 matthew 1262: if (exists($curve->{'function'})) {
1.9 matthew 1263: $gnuplot_input.=
1264: $curve->{'function'}.' title "'.
1265: $curve->{'name'}.'" with '.
1.72 matthew 1266: $curve->{'linestyle'};
1.119 ! albertel 1267: $gnuplot_input.= ' linewidth '.$curve->{'linewidth'};
! 1268:
1.60 matthew 1269: if (($curve->{'linestyle'} eq 'points') ||
1270: ($curve->{'linestyle'} eq 'linespoints') ||
1271: ($curve->{'linestyle'} eq 'errorbars') ||
1272: ($curve->{'linestyle'} eq 'xerrorbars') ||
1273: ($curve->{'linestyle'} eq 'yerrorbars') ||
1274: ($curve->{'linestyle'} eq 'xyerrorbars')) {
1.62 matthew 1275: $gnuplot_input.=' pointtype '.$curve->{'pointtype'};
1.60 matthew 1276: $gnuplot_input.=' pointsize '.$curve->{'pointsize'};
1.110 albertel 1277: } elsif ($curve->{'linestyle'} eq 'filledcurves') {
1278: $gnuplot_input.= ' '.$curve->{'limit'};
1.60 matthew 1279: }
1.6 matthew 1280: } elsif (exists($curve->{'data'})) {
1.40 matthew 1281: # Store data values in $datatext
1282: my $datatext = '';
1283: # get new filename
1.70 matthew 1284: my $datafilename = "$tmpdir/$filename.data.$i";
1.40 matthew 1285: my $fh=Apache::File->new(">$datafilename");
1286: # Compile data
1.6 matthew 1287: my @Data = @{$curve->{'data'}};
1.9 matthew 1288: my @Data0 = @{$Data[0]};
1289: for (my $i =0; $i<=$#Data0; $i++) {
1.10 matthew 1290: my $dataset;
1.6 matthew 1291: foreach $dataset (@Data) {
1.9 matthew 1292: $datatext .= $dataset->[$i] . ' ';
1.6 matthew 1293: }
1.9 matthew 1294: $datatext .= $/;
1.6 matthew 1295: }
1.40 matthew 1296: # write file
1297: print $fh $datatext;
1.119 ! albertel 1298: close($fh);
1.40 matthew 1299: # generate gnuplot text
1300: $gnuplot_input.= '"'.$datafilename.'" title "'.
1301: $curve->{'name'}.'" with '.
1302: $curve->{'linestyle'};
1.119 ! albertel 1303: $gnuplot_input.= ' linewidth '.$curve->{'linewidth'};
1.62 matthew 1304: if (($curve->{'linestyle'} eq 'points') ||
1305: ($curve->{'linestyle'} eq 'linespoints') ||
1306: ($curve->{'linestyle'} eq 'errorbars') ||
1307: ($curve->{'linestyle'} eq 'xerrorbars') ||
1308: ($curve->{'linestyle'} eq 'yerrorbars') ||
1309: ($curve->{'linestyle'} eq 'xyerrorbars')) {
1310: $gnuplot_input.=' pointtype '.$curve->{'pointtype'};
1311: $gnuplot_input.=' pointsize '.$curve->{'pointsize'};
1.110 albertel 1312: } elsif ($curve->{'linestyle'} eq 'filledcurves') {
1313: $gnuplot_input.= ' '.$curve->{'limit'};
1.62 matthew 1314: }
1.6 matthew 1315: }
1316: }
1.40 matthew 1317: # Write the output to a file.
1.70 matthew 1318: my $fh=Apache::File->new(">$tmpdir$filename.data");
1.40 matthew 1319: print $fh $gnuplot_input;
1320: close($fh);
1321: # That's all folks.
1322: return ;
1.2 matthew 1323: }
1.21 matthew 1324:
1325: #---------------------------------------------- check_inputs
1326: sub check_inputs {
1327: ## Note: no inputs, no outputs - this acts only on global variables.
1328: ## Make sure we have all the input we need:
1.107 foxr 1329: if (! %Apache::lonplot::plot) { &set_defaults(\%Apache::lonplot::plot,\%gnuplot_defaults); }
1.23 matthew 1330: if (! %key ) {} # No key for this plot, thats okay
1.34 matthew 1331: # if (! %axis) { &set_defaults(\%axis,\%axis_defaults); }
1.21 matthew 1332: if (! defined($title )) {} # No title for this plot, thats okay
1333: if (! defined($xlabel)) {} # No xlabel for this plot, thats okay
1334: if (! defined($ylabel)) {} # No ylabel for this plot, thats okay
1335: if ($#labels < 0) { } # No labels for this plot, thats okay
1336: if ($#curves < 0) {
1337: &Apache::lonxml::warning("No curves specified for plot!!!!");
1338: return '';
1339: }
1340: my $curve;
1341: foreach $curve (@curves) {
1342: if (!defined($curve->{'function'})&&!defined($curve->{'data'})){
1.85 matthew 1343: &Apache::lonxml::warning("One of the curves specified did not contain any curve data or curve function declarations\n");
1.21 matthew 1344: return '';
1345: }
1346: }
1347: }
1348:
1.20 matthew 1349: #------------------------------------------------ make_edit
1350: sub edit_attributes {
1.34 matthew 1351: my ($target,$token,$defaults,$keys) = @_;
1352: my ($result,@keys);
1353: if ($keys && ref($keys) eq 'ARRAY') {
1354: @keys = @$keys;
1355: } else {
1356: @keys = sort(keys(%$defaults));
1357: }
1358: foreach my $attr (@keys) {
1.35 matthew 1359: # append a ' ' to the description if it doesn't have one already.
1360: my $description = $defaults->{$attr}->{'description'};
1361: $description .= ' ' if ($description !~ / $/);
1.20 matthew 1362: if ($defaults->{$attr}->{'edit_type'} eq 'entry') {
1.35 matthew 1363: $result .= &Apache::edit::text_arg
1.38 matthew 1364: ($description,$attr,$token,
1365: $defaults->{$attr}->{'size'});
1.20 matthew 1366: } elsif ($defaults->{$attr}->{'edit_type'} eq 'choice') {
1.102 albertel 1367: $result .= &Apache::edit::select_or_text_arg
1.35 matthew 1368: ($description,$attr,$defaults->{$attr}->{'choices'},$token);
1.45 matthew 1369: } elsif ($defaults->{$attr}->{'edit_type'} eq 'onoff') {
1.102 albertel 1370: $result .= &Apache::edit::select_or_text_arg
1.35 matthew 1371: ($description,$attr,['on','off'],$token);
1.20 matthew 1372: }
1.25 matthew 1373: $result .= '<br />';
1.20 matthew 1374: }
1375: return $result;
1376: }
1.1 matthew 1377:
1.21 matthew 1378:
1379: ###################################################################
1380: ## ##
1381: ## Insertion functions for editing plots ##
1382: ## ##
1383: ###################################################################
1384:
1.47 matthew 1385: sub insert_gnuplot {
1.29 matthew 1386: my $result = '';
1.20 matthew 1387: # plot attributes
1.61 matthew 1388: $result .= "\n<gnuplot ";
1.47 matthew 1389: foreach my $attr (keys(%gnuplot_defaults)) {
1.61 matthew 1390: $result .= "\n $attr=\"$gnuplot_defaults{$attr}->{'default'}\"";
1.20 matthew 1391: }
1.61 matthew 1392: $result .= ">";
1.47 matthew 1393: # Add the components (most are commented out for simplicity)
1.44 matthew 1394: # $result .= &insert_key();
1395: # $result .= &insert_axis();
1396: # $result .= &insert_title();
1397: # $result .= &insert_xlabel();
1398: # $result .= &insert_ylabel();
1.20 matthew 1399: $result .= &insert_curve();
1.50 matthew 1400: # close up the <gnuplot>
1.61 matthew 1401: $result .= "\n</gnuplot>";
1.45 matthew 1402: return $result;
1403: }
1404:
1.46 matthew 1405: sub insert_tics {
1406: my $result;
1407: $result .= &insert_xtics() . &insert_ytics;
1408: return $result;
1409: }
1410:
1.45 matthew 1411: sub insert_xtics {
1412: my $result;
1.46 matthew 1413: $result .= "\n <xtics ";
1.45 matthew 1414: foreach my $attr (keys(%tic_defaults)) {
1.61 matthew 1415: $result .= "\n $attr=\"$tic_defaults{$attr}->{'default'}\" ";
1.45 matthew 1416: }
1.61 matthew 1417: $result .= "/>";
1.45 matthew 1418: return $result;
1419: }
1420:
1421: sub insert_ytics {
1422: my $result;
1.46 matthew 1423: $result .= "\n <ytics ";
1.45 matthew 1424: foreach my $attr (keys(%tic_defaults)) {
1.61 matthew 1425: $result .= "\n $attr=\"$tic_defaults{$attr}->{'default'}\" ";
1.45 matthew 1426: }
1.61 matthew 1427: $result .= "/>";
1.20 matthew 1428: return $result;
1429: }
1430:
1431: sub insert_key {
1432: my $result;
1.61 matthew 1433: $result .= "\n <key ";
1.30 matthew 1434: foreach my $attr (keys(%key_defaults)) {
1.61 matthew 1435: $result .= "\n $attr=\"$key_defaults{$attr}->{'default'}\"";
1.20 matthew 1436: }
1.61 matthew 1437: $result .= " />";
1.20 matthew 1438: return $result;
1439: }
1440:
1441: sub insert_axis{
1442: my $result;
1.46 matthew 1443: $result .= "\n <axis ";
1.30 matthew 1444: foreach my $attr (keys(%axis_defaults)) {
1.61 matthew 1445: $result .= "\n $attr=\"$axis_defaults{$attr}->{'default'}\"";
1.20 matthew 1446: }
1.61 matthew 1447: $result .= " />";
1.20 matthew 1448: return $result;
1449: }
1.28 matthew 1450:
1.61 matthew 1451: sub insert_title { return "\n <title></title>"; }
1452: sub insert_xlabel { return "\n <xlabel></xlabel>"; }
1453: sub insert_ylabel { return "\n <ylabel></ylabel>"; }
1.20 matthew 1454:
1455: sub insert_label {
1456: my $result;
1.46 matthew 1457: $result .= "\n <label ";
1.30 matthew 1458: foreach my $attr (keys(%label_defaults)) {
1.61 matthew 1459: $result .= "\n $attr=\"".
1460: $label_defaults{$attr}->{'default'}."\"";
1.20 matthew 1461: }
1.61 matthew 1462: $result .= "></label>";
1.20 matthew 1463: return $result;
1464: }
1465:
1466: sub insert_curve {
1467: my $result;
1.41 matthew 1468: $result .= "\n <curve ";
1.30 matthew 1469: foreach my $attr (keys(%curve_defaults)) {
1.61 matthew 1470: $result .= "\n $attr=\"".
1471: $curve_defaults{$attr}->{'default'}."\"";
1.20 matthew 1472: }
1.61 matthew 1473: $result .= " >";
1474: $result .= &insert_data().&insert_data()."\n </curve>";
1.20 matthew 1475: }
1.4 matthew 1476:
1.20 matthew 1477: sub insert_function {
1478: my $result;
1.61 matthew 1479: $result .= "\n <function></function>";
1.20 matthew 1480: return $result;
1481: }
1.4 matthew 1482:
1.20 matthew 1483: sub insert_data {
1484: my $result;
1.61 matthew 1485: $result .= "\n <data></data>";
1.20 matthew 1486: return $result;
1487: }
1.4 matthew 1488:
1.48 matthew 1489: ##----------------------------------------------------------------------
1.20 matthew 1490: 1;
1491: __END__
1.4 matthew 1492:
1493:
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