Annotation of loncom/xml/lonplot.pm, revision 1.98
1.1 matthew 1: # The LearningOnline Network with CAPA
2: # Dynamic plot
3: #
1.98 ! matthew 4: # $Id: lonplot.pm,v 1.97 2004/06/21 20:04:29 matthew 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;
1.10 matthew 38:
1.97 matthew 39: use vars qw/$weboutputformat $versionstring/;
40:
1.33 harris41 41: BEGIN {
1.97 matthew 42: &Apache::lonxml::register('Apache::lonplot',('gnuplot'));
43: #
44: # Determine the version of GNUPLOT
45: $weboutputformat = 'gif';
46: $versionstring = `gnuplot --version`;
47: if ($versionstring =~ /^gnuplot 4/) {
48: $weboutputformat = 'png';
49: }
1.1 matthew 50: }
51:
1.10 matthew 52: ##
53: ## Description of data structures:
54: ##
55: ## %plot %key %axis
56: ## --------------------------
57: ## height title color
58: ## width box xmin
59: ## bgcolor pos xmax
60: ## fgcolor ymin
61: ## transparent ymax
62: ## grid
63: ## border
64: ## font
1.19 matthew 65: ## align
1.10 matthew 66: ##
67: ## @labels: $labels[$i] = \%label
68: ## %label: text, xpos, ypos, justify
1.14 matthew 69: ##
1.10 matthew 70: ## @curves: $curves[$i] = \%curve
1.14 matthew 71: ## %curve: name, linestyle, ( function | data )
1.10 matthew 72: ##
73: ## $curves[$i]->{'data'} = [ [x1,x2,x3,x4],
74: ## [y1,y2,y3,y4] ]
75: ##
1.21 matthew 76:
77: ###################################################################
78: ## ##
79: ## Tests used in checking the validitity of input ##
80: ## ##
81: ###################################################################
1.29 matthew 82:
1.32 matthew 83: my $max_str_len = 50; # if a label, title, xlabel, or ylabel text
84: # is longer than this, it will be truncated.
85:
1.29 matthew 86: my %linestyles =
87: (
88: lines => 2, # Maybe this will be used in the future
89: linespoints => 2, # to check on whether or not they have
90: dots => 2, # supplied enough <data></data> fields
91: points => 2, # to use the given line style. But for
92: steps => 2, # now there are more important things
93: fsteps => 2, # for me to deal with.
94: histeps => 2,
1.34 matthew 95: errorbars => 3,
96: xerrorbars => [3,4],
97: yerrorbars => [3,4],
1.35 matthew 98: xyerrorbars => [4,6],
1.34 matthew 99: boxes => 3,
1.35 matthew 100: vector => 4
1.29 matthew 101: );
102:
1.11 matthew 103: my $int_test = sub {$_[0]=~s/\s+//g;$_[0]=~/^\d+$/};
1.19 matthew 104: my $real_test =
105: sub {$_[0]=~s/\s+//g;$_[0]=~/^[+-]?\d*\.?\d*([eE][+-]\d+)?$/};
1.62 matthew 106: my $pos_real_test =
107: sub {$_[0]=~s/\s+//g;$_[0]=~/^[+]?\d*\.?\d*([eE][+-]\d+)?$/};
1.79 matthew 108: my $color_test = sub {$_[0]=~s/\s+//g;$_[0]=~/^x[\da-fA-F]{6}$/};
1.1 matthew 109: my $onoff_test = sub {$_[0]=~/^(on|off)$/};
1.15 matthew 110: my $key_pos_test = sub {$_[0]=~/^(top|bottom|right|left|outside|below| )+$/};
1.1 matthew 111: my $sml_test = sub {$_[0]=~/^(small|medium|large)$/};
1.29 matthew 112: my $linestyle_test = sub {exists($linestyles{$_[0]})};
1.67 matthew 113: my $words_test = sub {$_[0]=~s/\s+/ /g;$_[0]=~/^([\w~!\@\#\$\%^&\*\(\)-=_\+\[\]\{\}:\;\'<>,\.\/\?\\]+ ?)+$/};
1.21 matthew 114:
115: ###################################################################
116: ## ##
117: ## Attribute metadata ##
118: ## ##
119: ###################################################################
1.47 matthew 120: my @gnuplot_edit_order =
1.82 matthew 121: qw/alttag bgcolor fgcolor height width font transparent grid samples
1.92 matthew 122: border align texwidth texfont plottype/;
1.48 matthew 123:
1.47 matthew 124: my %gnuplot_defaults =
1.1 matthew 125: (
1.64 matthew 126: alttag => {
127: default => 'dynamically generated plot',
128: test => $words_test,
129: description => 'brief description of the plot',
130: edit_type => 'entry',
131: size => '40'
132: },
1.20 matthew 133: height => {
1.65 matthew 134: default => 300,
1.20 matthew 135: test => $int_test,
1.29 matthew 136: description => 'height of image (pixels)',
1.38 matthew 137: edit_type => 'entry',
138: size => '10'
1.20 matthew 139: },
140: width => {
1.65 matthew 141: default => 400,
1.20 matthew 142: test => $int_test,
1.29 matthew 143: description => 'width of image (pixels)',
1.38 matthew 144: edit_type => 'entry',
145: size => '10'
1.20 matthew 146: },
147: bgcolor => {
148: default => 'xffffff',
149: test => $color_test,
150: description => 'background color of image (xffffff)',
1.38 matthew 151: edit_type => 'entry',
152: size => '10'
1.20 matthew 153: },
154: fgcolor => {
155: default => 'x000000',
156: test => $color_test,
157: description => 'foreground color of image (x000000)',
1.38 matthew 158: edit_type => 'entry',
159: size => '10'
1.20 matthew 160: },
161: transparent => {
162: default => 'off',
163: test => $onoff_test,
1.34 matthew 164: description => 'Transparent image',
1.45 matthew 165: edit_type => 'onoff'
1.20 matthew 166: },
167: grid => {
1.65 matthew 168: default => 'on',
1.20 matthew 169: test => $onoff_test,
1.34 matthew 170: description => 'Display grid',
1.45 matthew 171: edit_type => 'onoff'
1.20 matthew 172: },
173: border => {
174: default => 'on',
175: test => $onoff_test,
1.34 matthew 176: description => 'Draw border around plot',
1.45 matthew 177: edit_type => 'onoff'
1.20 matthew 178: },
179: font => {
180: default => 'medium',
181: test => $sml_test,
182: description => 'Size of font to use',
183: edit_type => 'choice',
184: choices => ['small','medium','large']
185: },
1.77 matthew 186: samples => {
187: default => '100',
188: test => $int_test,
189: description => 'Number of samples for non-data plots',
190: edit_type => 'choice',
191: choices => ['100','200','500','1000','2000','5000']
192: },
1.20 matthew 193: align => {
1.65 matthew 194: default => 'center',
1.20 matthew 195: test => sub {$_[0]=~/^(left|right|center)$/},
196: description => 'alignment for image in html',
197: edit_type => 'choice',
198: choices => ['left','right','center']
1.82 matthew 199: },
200: texwidth => {
201: default => '93',
202: test => $int_test,
203: description => 'Width of plot when printed (mm)',
204: edit_type => 'entry',
205: size => '5'
206: },
1.92 matthew 207: texfont => {
208: default => '22',
209: test => $int_test,
210: description => 'Font size to use in TeX output (pts):',
211: edit_type => 'choice',
1.96 matthew 212: choices => [qw/8 10 12 14 16 18 20 22 24 26 28 30 32 34 36/],
1.92 matthew 213: },
1.87 matthew 214: plottype => {
215: default => 'Cartesian',
216: test => sub {$_[0]=~/^(Polar|Cartesian)$/},
217: description => 'Plot type:',
218: edit_type => 'choice',
1.94 matthew 219: choices => ['Cartesian','Polar']
1.87 matthew 220: },
1.1 matthew 221: );
222:
223: my %key_defaults =
224: (
1.20 matthew 225: title => {
226: default => '',
227: test => $words_test,
228: description => 'Title of key',
1.38 matthew 229: edit_type => 'entry',
230: size => '40'
1.20 matthew 231: },
232: box => {
233: default => 'off',
234: test => $onoff_test,
235: description => 'Draw a box around the key?',
1.45 matthew 236: edit_type => 'onoff'
1.20 matthew 237: },
238: pos => {
239: default => 'top right',
240: test => $key_pos_test,
241: description => 'position of the key on the plot',
242: edit_type => 'choice',
243: choices => ['top left','top right','bottom left','bottom right',
244: 'outside','below']
245: }
1.1 matthew 246: );
247:
248: my %label_defaults =
249: (
1.20 matthew 250: xpos => {
251: default => 0,
252: test => $real_test,
253: description => 'x position of label (graph coordinates)',
1.38 matthew 254: edit_type => 'entry',
255: size => '10'
1.20 matthew 256: },
257: ypos => {
258: default => 0,
259: test => $real_test,
260: description => 'y position of label (graph coordinates)',
1.38 matthew 261: edit_type => 'entry',
262: size => '10'
1.20 matthew 263: },
264: justify => {
265: default => 'left',
266: test => sub {$_[0]=~/^(left|right|center)$/},
267: description => 'justification of the label text on the plot',
268: edit_type => 'choice',
269: choices => ['left','right','center']
270: }
1.1 matthew 271: );
272:
1.89 matthew 273: my @tic_edit_order = ('location','mirror','start','increment','end',
274: 'minorfreq');
1.45 matthew 275: my %tic_defaults =
276: (
277: location => {
278: default => 'border',
279: test => sub {$_[0]=~/^(border|axis)$/},
1.90 matthew 280: description => 'Location of major tic marks',
1.45 matthew 281: edit_type => 'choice',
282: choices => ['border','axis']
283: },
284: mirror => {
285: default => 'on',
286: test => $onoff_test,
1.90 matthew 287: description => 'mirror tics on opposite axis?',
1.45 matthew 288: edit_type => 'onoff'
289: },
290: start => {
291: default => '-10.0',
292: test => $real_test,
1.90 matthew 293: description => 'Start major tics at',
1.45 matthew 294: edit_type => 'entry',
295: size => '10'
296: },
297: increment => {
298: default => '1.0',
299: test => $real_test,
1.90 matthew 300: description => 'Place a major tic every',
1.45 matthew 301: edit_type => 'entry',
302: size => '10'
303: },
304: end => {
305: default => ' 10.0',
306: test => $real_test,
1.90 matthew 307: description => 'Stop major tics at ',
1.45 matthew 308: edit_type => 'entry',
309: size => '10'
310: },
1.89 matthew 311: minorfreq => {
312: default => '0',
313: test => $int_test,
1.98 ! matthew 314: description => 'Number of minor tics per major tic mark',
1.89 matthew 315: edit_type => 'entry',
316: size => '10'
317: },
1.45 matthew 318: );
319:
1.65 matthew 320: my @axis_edit_order = ('color','xmin','xmax','ymin','ymax');
1.1 matthew 321: my %axis_defaults =
322: (
1.28 matthew 323: color => {
1.20 matthew 324: default => 'x000000',
325: test => $color_test,
1.78 matthew 326: description => 'color of grid lines (x000000)',
1.38 matthew 327: edit_type => 'entry',
328: size => '10'
1.20 matthew 329: },
330: xmin => {
331: default => '-10.0',
332: test => $real_test,
333: description => 'minimum x-value shown in plot',
1.38 matthew 334: edit_type => 'entry',
335: size => '10'
1.20 matthew 336: },
337: xmax => {
338: default => ' 10.0',
339: test => $real_test,
340: description => 'maximum x-value shown in plot',
1.38 matthew 341: edit_type => 'entry',
342: size => '10'
1.20 matthew 343: },
344: ymin => {
345: default => '-10.0',
346: test => $real_test,
347: description => 'minimum y-value shown in plot',
1.38 matthew 348: edit_type => 'entry',
349: size => '10'
1.20 matthew 350: },
351: ymax => {
352: default => ' 10.0',
353: test => $real_test,
354: description => 'maximum y-value shown in plot',
1.38 matthew 355: edit_type => 'entry',
356: size => '10'
1.20 matthew 357: }
1.1 matthew 358: );
359:
1.62 matthew 360: my @curve_edit_order = ('color','name','linestyle','pointtype','pointsize');
1.60 matthew 361:
1.1 matthew 362: my %curve_defaults =
363: (
1.20 matthew 364: color => {
365: default => 'x000000',
366: test => $color_test,
367: description => 'color of curve (x000000)',
1.38 matthew 368: edit_type => 'entry',
369: size => '10'
1.20 matthew 370: },
371: name => {
372: default => '',
373: test => $words_test,
374: description => 'name of curve to appear in key',
1.38 matthew 375: edit_type => 'entry',
376: size => '20'
1.20 matthew 377: },
378: linestyle => {
379: default => 'lines',
380: test => $linestyle_test,
1.35 matthew 381: description => 'Line style',
1.20 matthew 382: edit_type => 'choice',
1.38 matthew 383: choices => [keys(%linestyles)]
1.60 matthew 384: },
385: # gnuplots term=gif driver does not handle linewidth :(
386: # linewidth => {
387: # default => 1,
388: # test => $int_test,
389: # description => 'Line width (may not apply to all line styles)',
390: # edit_type => 'choice',
391: # choices => [1,2,3,4,5,6,7,8,9,10]
392: # },
393: pointsize => {
394: default => 1,
1.62 matthew 395: test => $pos_real_test,
396: description => 'point size (may not apply to all line styles)',
397: edit_type => 'entry',
398: size => '5'
399: },
400: pointtype => {
401: default => 1,
1.60 matthew 402: test => $int_test,
1.62 matthew 403: description => 'point type (may not apply to all line styles)',
1.60 matthew 404: edit_type => 'choice',
1.62 matthew 405: choices => [0,1,2,3,4,5,6]
1.60 matthew 406: }
1.1 matthew 407: );
408:
1.21 matthew 409: ###################################################################
410: ## ##
411: ## parsing and edit rendering ##
412: ## ##
413: ###################################################################
1.45 matthew 414: my (%plot,%key,%axis,$title,$xlabel,$ylabel,@labels,@curves,%xtics,%ytics);
1.1 matthew 415:
1.47 matthew 416: sub start_gnuplot {
1.89 matthew 417: undef(%plot); undef(%key); undef(%axis);
418: undef($title); undef($xlabel); undef($ylabel);
419: undef(@labels); undef(@curves);
420: undef(%xtics); undef(%ytics);
1.6 matthew 421: #
1.1 matthew 422: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
423: my $result='';
1.25 matthew 424: &Apache::lonxml::register('Apache::lonplot',
1.45 matthew 425: ('title','xlabel','ylabel','key','axis','label','curve',
426: 'xtics','ytics'));
1.29 matthew 427: push (@Apache::lonxml::namespace,'lonplot');
1.51 matthew 428: if ($target eq 'web' || $target eq 'tex') {
1.47 matthew 429: &get_attributes(\%plot,\%gnuplot_defaults,$parstack,$safeeval,
1.17 matthew 430: $tagstack->[-1]);
1.20 matthew 431: } elsif ($target eq 'edit') {
1.47 matthew 432: $result .= &Apache::edit::tag_start($target,$token,'GnuPlot');
433: $result .= &edit_attributes($target,$token,\%gnuplot_defaults,
434: \@gnuplot_edit_order);
1.20 matthew 435: } elsif ($target eq 'modified') {
436: my $constructtag=&Apache::edit::get_new_args
1.47 matthew 437: ($token,$parstack,$safeeval,keys(%gnuplot_defaults));
1.20 matthew 438: if ($constructtag) {
439: $result = &Apache::edit::rebuild_tag($token);
440: }
1.4 matthew 441: }
1.21 matthew 442: return $result;
1.1 matthew 443: }
444:
1.47 matthew 445: sub end_gnuplot {
1.1 matthew 446: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
447: pop @Apache::lonxml::namespace;
1.4 matthew 448: &Apache::lonxml::deregister('Apache::lonplot',
449: ('title','xlabel','ylabel','key','axis','label','curve'));
450: my $result = '';
1.56 albertel 451: my $randnumber;
452: # need to call rand everytime start_script would evaluate, as the
453: # safe space rand number generator and the global rand generator
1.95 www 454: # are not separate
1.56 albertel 455: if ($target eq 'web' || $target eq 'tex' || $target eq 'grade' ||
456: $target eq 'answer') {
457: $randnumber=int(rand(1000));
458: }
1.51 matthew 459: if ($target eq 'web' || $target eq 'tex') {
1.21 matthew 460: &check_inputs(); # Make sure we have all the data we need
1.13 matthew 461: ##
462: ## Determine filename
1.4 matthew 463: my $tmpdir = '/home/httpd/perl/tmp/';
1.12 matthew 464: my $filename = $ENV{'user.name'}.'_'.$ENV{'user.domain'}.
1.69 matthew 465: '_'.time.'_'.$$.$randnumber.'_plot';
1.4 matthew 466: ## Write the plot description to the file
1.51 matthew 467: &write_gnuplot_file($tmpdir,$filename,$target);
1.54 matthew 468: $filename = &Apache::lonnet::escape($filename);
1.4 matthew 469: ## return image tag for the plot
1.51 matthew 470: if ($target eq 'web') {
471: $result .= <<"ENDIMAGE";
1.97 matthew 472: <img src = "/cgi-bin/plot.gif?file=$filename.data&output=$weboutputformat"
1.64 matthew 473: width = "$plot{'width'}"
1.16 matthew 474: height = "$plot{'height'}"
475: align = "$plot{'align'}"
1.64 matthew 476: alt = "$plot{'alttag'}" />
1.12 matthew 477: ENDIMAGE
1.51 matthew 478: } elsif ($target eq 'tex') {
1.91 albertel 479: #might be inside the safe space, register the URL for later
480: &Apache::lonxml::register_ssi("/cgi-bin/plot.gif?file=$filename.data&output=eps");
1.84 sakharuk 481: $result = '\graphicspath{{/home/httpd/perl/tmp/}}\includegraphics[width='.$plot{'texwidth'}.' mm]{'.&Apache::lonnet::unescape($filename).'.eps}';
1.51 matthew 482: }
1.20 matthew 483: } elsif ($target eq 'edit') {
1.21 matthew 484: $result.=&Apache::edit::tag_end($target,$token);
1.4 matthew 485: }
1.1 matthew 486: return $result;
487: }
1.2 matthew 488:
1.45 matthew 489:
490: ##--------------------------------------------------------------- xtics
491: sub start_xtics {
492: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
493: my $result='';
1.51 matthew 494: if ($target eq 'web' || $target eq 'tex') {
1.45 matthew 495: &get_attributes(\%xtics,\%tic_defaults,$parstack,$safeeval,
496: $tagstack->[-1]);
497: } elsif ($target eq 'edit') {
498: $result .= &Apache::edit::tag_start($target,$token,'xtics');
499: $result .= &edit_attributes($target,$token,\%tic_defaults,
500: \@tic_edit_order);
501: } elsif ($target eq 'modified') {
502: my $constructtag=&Apache::edit::get_new_args
503: ($token,$parstack,$safeeval,keys(%tic_defaults));
504: if ($constructtag) {
505: $result = &Apache::edit::rebuild_tag($token);
506: }
507: }
508: return $result;
509: }
510:
511: sub end_xtics {
512: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
513: my $result = '';
1.51 matthew 514: if ($target eq 'web' || $target eq 'tex') {
1.45 matthew 515: } elsif ($target eq 'edit') {
516: $result.=&Apache::edit::tag_end($target,$token);
517: }
518: return $result;
519: }
520:
521: ##--------------------------------------------------------------- ytics
522: sub start_ytics {
523: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
524: my $result='';
1.51 matthew 525: if ($target eq 'web' || $target eq 'tex') {
1.45 matthew 526: &get_attributes(\%ytics,\%tic_defaults,$parstack,$safeeval,
527: $tagstack->[-1]);
528: } elsif ($target eq 'edit') {
529: $result .= &Apache::edit::tag_start($target,$token,'ytics');
530: $result .= &edit_attributes($target,$token,\%tic_defaults,
531: \@tic_edit_order);
532: } elsif ($target eq 'modified') {
533: my $constructtag=&Apache::edit::get_new_args
534: ($token,$parstack,$safeeval,keys(%tic_defaults));
535: if ($constructtag) {
536: $result = &Apache::edit::rebuild_tag($token);
537: }
538: }
539: return $result;
540: }
541:
542: sub end_ytics {
543: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
544: my $result = '';
1.51 matthew 545: if ($target eq 'web' || $target eq 'tex') {
1.45 matthew 546: } elsif ($target eq 'edit') {
547: $result.=&Apache::edit::tag_end($target,$token);
548: }
549: return $result;
550: }
551:
552:
1.1 matthew 553: ##----------------------------------------------------------------- key
554: sub start_key {
555: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
556: my $result='';
1.51 matthew 557: if ($target eq 'web' || $target eq 'tex') {
1.17 matthew 558: &get_attributes(\%key,\%key_defaults,$parstack,$safeeval,
1.11 matthew 559: $tagstack->[-1]);
1.20 matthew 560: } elsif ($target eq 'edit') {
1.25 matthew 561: $result .= &Apache::edit::tag_start($target,$token,'Plot Key');
1.21 matthew 562: $result .= &edit_attributes($target,$token,\%key_defaults);
1.20 matthew 563: } elsif ($target eq 'modified') {
564: my $constructtag=&Apache::edit::get_new_args
1.24 matthew 565: ($token,$parstack,$safeeval,keys(%key_defaults));
1.20 matthew 566: if ($constructtag) {
567: $result = &Apache::edit::rebuild_tag($token);
568: }
1.4 matthew 569: }
1.1 matthew 570: return $result;
571: }
572:
573: sub end_key {
574: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
575: my $result = '';
1.51 matthew 576: if ($target eq 'web' || $target eq 'tex') {
1.20 matthew 577: } elsif ($target eq 'edit') {
1.21 matthew 578: $result.=&Apache::edit::tag_end($target,$token);
1.4 matthew 579: }
1.1 matthew 580: return $result;
581: }
1.21 matthew 582:
1.1 matthew 583: ##------------------------------------------------------------------- title
584: sub start_title {
585: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
586: my $result='';
1.51 matthew 587: if ($target eq 'web' || $target eq 'tex') {
1.81 albertel 588: $title = &Apache::lonxml::get_all_text("/title",$parser);
1.58 matthew 589: $title=&Apache::run::evaluate($title,$safeeval,$$parstack[-1]);
1.49 matthew 590: $title =~ s/\n/ /g;
1.32 matthew 591: if (length($title) > $max_str_len) {
592: $title = substr($title,0,$max_str_len);
593: }
1.20 matthew 594: } elsif ($target eq 'edit') {
1.25 matthew 595: $result.=&Apache::edit::tag_start($target,$token,'Plot Title');
1.81 albertel 596: my $text=&Apache::lonxml::get_all_text("/title",$parser);
1.39 matthew 597: $result.=&Apache::edit::end_row().
598: &Apache::edit::start_spanning_row().
1.63 albertel 599: &Apache::edit::editline('',$text,'',60);
1.20 matthew 600: } elsif ($target eq 'modified') {
1.42 matthew 601: $result.=&Apache::edit::rebuild_tag($token);
1.93 albertel 602: $result.=&Apache::edit::modifiedfield("/title",$parser);
1.4 matthew 603: }
1.1 matthew 604: return $result;
605: }
606:
607: sub end_title {
608: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
609: my $result = '';
1.51 matthew 610: if ($target eq 'web' || $target eq 'tex') {
1.20 matthew 611: } elsif ($target eq 'edit') {
1.27 matthew 612: $result.=&Apache::edit::tag_end($target,$token);
1.4 matthew 613: }
1.1 matthew 614: return $result;
615: }
616: ##------------------------------------------------------------------- xlabel
617: sub start_xlabel {
618: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
619: my $result='';
1.51 matthew 620: if ($target eq 'web' || $target eq 'tex') {
1.81 albertel 621: $xlabel = &Apache::lonxml::get_all_text("/xlabel",$parser);
1.58 matthew 622: $xlabel=&Apache::run::evaluate($xlabel,$safeeval,$$parstack[-1]);
1.49 matthew 623: $xlabel =~ s/\n/ /g;
1.32 matthew 624: if (length($xlabel) > $max_str_len) {
625: $xlabel = substr($xlabel,0,$max_str_len);
626: }
1.20 matthew 627: } elsif ($target eq 'edit') {
1.25 matthew 628: $result.=&Apache::edit::tag_start($target,$token,'Plot Xlabel');
1.81 albertel 629: my $text=&Apache::lonxml::get_all_text("/xlabel",$parser);
1.39 matthew 630: $result.=&Apache::edit::end_row().
631: &Apache::edit::start_spanning_row().
1.63 albertel 632: &Apache::edit::editline('',$text,'',60);
1.20 matthew 633: } elsif ($target eq 'modified') {
1.42 matthew 634: $result.=&Apache::edit::rebuild_tag($token);
1.93 albertel 635: $result.=&Apache::edit::modifiedfield("/xlabel",$parser);
1.4 matthew 636: }
1.1 matthew 637: return $result;
638: }
639:
640: sub end_xlabel {
641: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
642: my $result = '';
1.51 matthew 643: if ($target eq 'web' || $target eq 'tex') {
1.20 matthew 644: } elsif ($target eq 'edit') {
1.27 matthew 645: $result.=&Apache::edit::tag_end($target,$token);
1.4 matthew 646: }
1.1 matthew 647: return $result;
648: }
1.21 matthew 649:
1.1 matthew 650: ##------------------------------------------------------------------- ylabel
651: sub start_ylabel {
652: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
653: my $result='';
1.51 matthew 654: if ($target eq 'web' || $target eq 'tex') {
1.81 albertel 655: $ylabel = &Apache::lonxml::get_all_text("/ylabel",$parser);
1.58 matthew 656: $ylabel = &Apache::run::evaluate($ylabel,$safeeval,$$parstack[-1]);
1.49 matthew 657: $ylabel =~ s/\n/ /g;
1.32 matthew 658: if (length($ylabel) > $max_str_len) {
659: $ylabel = substr($ylabel,0,$max_str_len);
660: }
1.20 matthew 661: } elsif ($target eq 'edit') {
1.25 matthew 662: $result .= &Apache::edit::tag_start($target,$token,'Plot Ylabel');
1.81 albertel 663: my $text = &Apache::lonxml::get_all_text("/ylabel",$parser);
1.39 matthew 664: $result .= &Apache::edit::end_row().
665: &Apache::edit::start_spanning_row().
1.63 albertel 666: &Apache::edit::editline('',$text,'',60);
1.20 matthew 667: } elsif ($target eq 'modified') {
1.42 matthew 668: $result.=&Apache::edit::rebuild_tag($token);
1.93 albertel 669: $result.=&Apache::edit::modifiedfield("/ylabel",$parser);
1.4 matthew 670: }
1.1 matthew 671: return $result;
672: }
673:
674: sub end_ylabel {
675: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
676: my $result = '';
1.51 matthew 677: if ($target eq 'web' || $target eq 'tex') {
1.20 matthew 678: } elsif ($target eq 'edit') {
1.27 matthew 679: $result.=&Apache::edit::tag_end($target,$token);
1.4 matthew 680: }
1.1 matthew 681: return $result;
682: }
1.21 matthew 683:
1.1 matthew 684: ##------------------------------------------------------------------- label
685: sub start_label {
686: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
687: my $result='';
1.51 matthew 688: if ($target eq 'web' || $target eq 'tex') {
1.17 matthew 689: my %label;
690: &get_attributes(\%label,\%label_defaults,$parstack,$safeeval,
1.11 matthew 691: $tagstack->[-1]);
1.81 albertel 692: my $text = &Apache::lonxml::get_all_text("/label",$parser);
1.58 matthew 693: $text = &Apache::run::evaluate($text,$safeeval,$$parstack[-1]);
1.49 matthew 694: $text =~ s/\n/ /g;
1.32 matthew 695: $text = substr($text,0,$max_str_len) if (length($text) > $max_str_len);
696: $label{'text'} = $text;
1.17 matthew 697: push(@labels,\%label);
1.20 matthew 698: } elsif ($target eq 'edit') {
1.25 matthew 699: $result .= &Apache::edit::tag_start($target,$token,'Plot Label');
1.21 matthew 700: $result .= &edit_attributes($target,$token,\%label_defaults);
1.81 albertel 701: my $text = &Apache::lonxml::get_all_text("/label",$parser);
1.39 matthew 702: $result .= &Apache::edit::end_row().
703: &Apache::edit::start_spanning_row().
1.63 albertel 704: &Apache::edit::editline('',$text,'',60);
1.20 matthew 705: } elsif ($target eq 'modified') {
1.42 matthew 706: &Apache::edit::get_new_args
1.24 matthew 707: ($token,$parstack,$safeeval,keys(%label_defaults));
1.42 matthew 708: $result.=&Apache::edit::rebuild_tag($token);
1.93 albertel 709: $result.=&Apache::edit::modifiedfield("/label",$parser);
1.4 matthew 710: }
1.1 matthew 711: return $result;
712: }
713:
714: sub end_label {
715: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
716: my $result = '';
1.51 matthew 717: if ($target eq 'web' || $target eq 'tex') {
1.20 matthew 718: } elsif ($target eq 'edit') {
1.21 matthew 719: $result.=&Apache::edit::tag_end($target,$token);
1.4 matthew 720: }
1.1 matthew 721: return $result;
722: }
723:
724: ##------------------------------------------------------------------- curve
725: sub start_curve {
726: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
727: my $result='';
1.25 matthew 728: &Apache::lonxml::register('Apache::lonplot',('function','data'));
729: push (@Apache::lonxml::namespace,'curve');
1.51 matthew 730: if ($target eq 'web' || $target eq 'tex') {
1.17 matthew 731: my %curve;
732: &get_attributes(\%curve,\%curve_defaults,$parstack,$safeeval,
1.11 matthew 733: $tagstack->[-1]);
1.17 matthew 734: push (@curves,\%curve);
1.20 matthew 735: } elsif ($target eq 'edit') {
1.26 matthew 736: $result .= &Apache::edit::tag_start($target,$token,'Curve');
1.60 matthew 737: $result .= &edit_attributes($target,$token,\%curve_defaults,
738: \@curve_edit_order);
1.20 matthew 739: } elsif ($target eq 'modified') {
740: my $constructtag=&Apache::edit::get_new_args
1.35 matthew 741: ($token,$parstack,$safeeval,keys(%curve_defaults));
1.20 matthew 742: if ($constructtag) {
743: $result = &Apache::edit::rebuild_tag($token);
744: $result.= &Apache::edit::handle_insert();
745: }
1.4 matthew 746: }
1.1 matthew 747: return $result;
748: }
749:
750: sub end_curve {
751: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
752: my $result = '';
1.25 matthew 753: pop @Apache::lonxml::namespace;
754: &Apache::lonxml::deregister('Apache::lonplot',('function','data'));
1.51 matthew 755: if ($target eq 'web' || $target eq 'tex') {
1.20 matthew 756: } elsif ($target eq 'edit') {
1.21 matthew 757: $result.=&Apache::edit::tag_end($target,$token);
1.4 matthew 758: }
1.1 matthew 759: return $result;
760: }
1.21 matthew 761:
1.1 matthew 762: ##------------------------------------------------------------ curve function
763: sub start_function {
764: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
765: my $result='';
1.51 matthew 766: if ($target eq 'web' || $target eq 'tex') {
1.17 matthew 767: if (exists($curves[-1]->{'data'})) {
1.85 matthew 768: &Apache::lonxml::warning
769: ('Use of the <b>curve function</b> tag precludes use of '.
770: ' the <b>curve data</b> tag. '.
771: 'The curve data tag will be omitted in favor of the '.
772: 'curve function declaration.');
1.17 matthew 773: delete $curves[-1]->{'data'} ;
774: }
1.81 albertel 775: my $function = &Apache::lonxml::get_all_text("/function",$parser);
1.58 matthew 776: $function = &Apache::run::evaluate($function,$safeeval,$$parstack[-1]);
777: $curves[-1]->{'function'} = $function;
1.20 matthew 778: } elsif ($target eq 'edit') {
1.37 matthew 779: $result .= &Apache::edit::tag_start($target,$token,'Gnuplot compatible curve function');
1.81 albertel 780: my $text = &Apache::lonxml::get_all_text("/function",$parser);
1.39 matthew 781: $result .= &Apache::edit::end_row().
782: &Apache::edit::start_spanning_row().
1.63 albertel 783: &Apache::edit::editline('',$text,'',60);
1.20 matthew 784: } elsif ($target eq 'modified') {
1.42 matthew 785: $result.=&Apache::edit::rebuild_tag($token);
1.93 albertel 786: $result.=&Apache::edit::modifiedfield("/function",$parser);
1.4 matthew 787: }
1.1 matthew 788: return $result;
789: }
790:
791: sub end_function {
792: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
793: my $result = '';
1.51 matthew 794: if ($target eq 'web' || $target eq 'tex') {
1.20 matthew 795: } elsif ($target eq 'edit') {
1.26 matthew 796: $result .= &Apache::edit::end_table();
1.4 matthew 797: }
1.1 matthew 798: return $result;
799: }
1.21 matthew 800:
1.1 matthew 801: ##------------------------------------------------------------ curve data
802: sub start_data {
803: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
804: my $result='';
1.51 matthew 805: if ($target eq 'web' || $target eq 'tex') {
1.17 matthew 806: if (exists($curves[-1]->{'function'})) {
1.85 matthew 807: &Apache::lonxml::warning
808: ('Use of the <b>curve function</b> tag precludes use of '.
809: ' the <b>curve data</b> tag. '.
810: 'The curve function tag will be omitted in favor of the '.
811: 'curve data declaration.');
1.17 matthew 812: delete($curves[-1]->{'function'});
813: }
1.81 albertel 814: my $datatext = &Apache::lonxml::get_all_text("/data",$parser);
1.58 matthew 815: $datatext=&Apache::run::evaluate($datatext,$safeeval,$$parstack[-1]);
1.40 matthew 816: # Deal with cases where we're given an array...
817: if ($datatext =~ /^\@/) {
818: $datatext = &Apache::run::run('return "'.$datatext.'"',
819: $safeeval,1);
820: }
1.49 matthew 821: $datatext =~ s/\s+/ /g;
1.17 matthew 822: # Need to do some error checking on the @data array -
823: # make sure it's all numbers and make sure each array
824: # is of the same length.
825: my @data;
1.35 matthew 826: if ($datatext =~ /,/) { # comma deliminated
1.17 matthew 827: @data = split /,/,$datatext;
1.95 www 828: } else { # Assume it's space separated.
1.17 matthew 829: @data = split / /,$datatext;
830: }
831: for (my $i=0;$i<=$#data;$i++) {
832: # Check that it's non-empty
1.19 matthew 833: if (! defined($data[$i])) {
834: &Apache::lonxml::warning(
1.85 matthew 835: 'undefined curve data value. Replacing with '.
1.19 matthew 836: ' pi/e = 1.15572734979092');
837: $data[$i] = 1.15572734979092;
838: }
1.17 matthew 839: # Check that it's a number
1.19 matthew 840: if (! &$real_test($data[$i]) & ! &$int_test($data[$i])) {
841: &Apache::lonxml::warning(
1.85 matthew 842: 'Bad curve data value of '.$data[$i].' Replacing with '.
1.19 matthew 843: ' pi/e = 1.15572734979092');
844: $data[$i] = 1.15572734979092;
845: }
1.17 matthew 846: }
1.35 matthew 847: # complain if the number of data points is not the same as
848: # in previous sets of data.
1.36 matthew 849: if (($curves[-1]->{'data'}) && ($#data != $#{@{$curves[-1]->{'data'}->[0]}})){
1.35 matthew 850: &Apache::lonxml::warning
851: ('Number of data points is not consistent with previous '.
852: 'number of data points');
853: }
1.17 matthew 854: push @{$curves[-1]->{'data'}},\@data;
1.20 matthew 855: } elsif ($target eq 'edit') {
1.37 matthew 856: $result .= &Apache::edit::tag_start($target,$token,'Comma or space deliminated curve data');
1.81 albertel 857: my $text = &Apache::lonxml::get_all_text("/data",$parser);
1.39 matthew 858: $result .= &Apache::edit::end_row().
859: &Apache::edit::start_spanning_row().
1.63 albertel 860: &Apache::edit::editline('',$text,'',60);
1.20 matthew 861: } elsif ($target eq 'modified') {
1.42 matthew 862: $result.=&Apache::edit::rebuild_tag($token);
1.93 albertel 863: $result.=&Apache::edit::modifiedfield("/data",$parser);
1.4 matthew 864: }
1.1 matthew 865: return $result;
866: }
867:
868: sub end_data {
869: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
870: my $result = '';
1.51 matthew 871: if ($target eq 'web' || $target eq 'tex') {
1.20 matthew 872: } elsif ($target eq 'edit') {
1.26 matthew 873: $result .= &Apache::edit::end_table();
1.4 matthew 874: }
1.1 matthew 875: return $result;
876: }
877:
878: ##------------------------------------------------------------------- axis
879: sub start_axis {
880: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
881: my $result='';
1.51 matthew 882: if ($target eq 'web' || $target eq 'tex') {
1.17 matthew 883: &get_attributes(\%axis,\%axis_defaults,$parstack,$safeeval,
884: $tagstack->[-1]);
1.20 matthew 885: } elsif ($target eq 'edit') {
1.25 matthew 886: $result .= &Apache::edit::tag_start($target,$token,'Plot Axes');
1.65 matthew 887: $result .= &edit_attributes($target,$token,\%axis_defaults,
888: \@axis_edit_order);
1.20 matthew 889: } elsif ($target eq 'modified') {
1.29 matthew 890: my $constructtag=&Apache::edit::get_new_args
891: ($token,$parstack,$safeeval,keys(%axis_defaults));
892: if ($constructtag) {
893: $result = &Apache::edit::rebuild_tag($token);
894: }
1.4 matthew 895: }
1.1 matthew 896: return $result;
897: }
898:
899: sub end_axis {
900: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
901: my $result = '';
1.51 matthew 902: if ($target eq 'web' || $target eq 'tex') {
1.20 matthew 903: } elsif ($target eq 'edit') {
1.21 matthew 904: $result.=&Apache::edit::tag_end($target,$token);
1.20 matthew 905: } elsif ($target eq 'modified') {
1.4 matthew 906: }
1.1 matthew 907: return $result;
908: }
909:
1.21 matthew 910: ###################################################################
911: ## ##
912: ## Utility Functions ##
913: ## ##
914: ###################################################################
915:
1.13 matthew 916: ##----------------------------------------------------------- set_defaults
917: sub set_defaults {
1.21 matthew 918: my ($var,$defaults) = @_;
1.13 matthew 919: my $key;
1.24 matthew 920: foreach $key (keys(%$defaults)) {
1.13 matthew 921: $var->{$key} = $defaults->{$key}->{'default'};
922: }
923: }
924:
1.1 matthew 925: ##------------------------------------------------------------------- misc
1.2 matthew 926: sub get_attributes{
1.21 matthew 927: my ($values,$defaults,$parstack,$safeeval,$tag) = @_;
1.24 matthew 928: foreach my $attr (keys(%{$defaults})) {
1.92 matthew 929: if ($attr eq 'texwidth' || $attr eq 'texfont') {
1.86 albertel 930: $values->{$attr} =
931: &Apache::lonxml::get_param($attr,$parstack,$safeeval,undef,1);
932: } else {
933: $values->{$attr} =
934: &Apache::lonxml::get_param($attr,$parstack,$safeeval);
935: }
1.10 matthew 936: if ($values->{$attr} eq '' | !defined($values->{$attr})) {
1.11 matthew 937: $values->{$attr} = $defaults->{$attr}->{'default'};
1.6 matthew 938: next;
939: }
1.10 matthew 940: my $test = $defaults->{$attr}->{'test'};
941: if (! &$test($values->{$attr})) {
1.6 matthew 942: &Apache::lonxml::warning
943: ($tag.':'.$attr.': Bad value.'.'Replacing your value with : '
1.11 matthew 944: .$defaults->{$attr}->{'default'} );
945: $values->{$attr} = $defaults->{$attr}->{'default'};
1.10 matthew 946: }
1.2 matthew 947: }
1.11 matthew 948: return ;
1.6 matthew 949: }
1.40 matthew 950:
1.15 matthew 951: ##------------------------------------------------------- write_gnuplot_file
1.6 matthew 952: sub write_gnuplot_file {
1.51 matthew 953: my ($tmpdir,$filename,$target)= @_;
1.6 matthew 954: my $gnuplot_input = '';
1.10 matthew 955: my $curve;
1.92 matthew 956: my $pt = $plot{'texfont'};
1.6 matthew 957: # Collect all the colors
958: my @Colors;
959: push @Colors, $plot{'bgcolor'};
960: push @Colors, $plot{'fgcolor'};
1.13 matthew 961: push @Colors, (defined($axis{'color'})?$axis{'color'}:$plot{'fgcolor'});
1.9 matthew 962: foreach $curve (@curves) {
963: push @Colors, ($curve->{'color'} ne '' ?
964: $curve->{'color'} :
1.13 matthew 965: $plot{'fgcolor'} );
1.6 matthew 966: }
967: # set term
1.51 matthew 968: if ($target eq 'web') {
969: $gnuplot_input .= 'set term gif ';
970: $gnuplot_input .= 'transparent ' if ($plot{'transparent'} eq 'on');
971: $gnuplot_input .= $plot{'font'} . ' ';
972: $gnuplot_input .= 'size '.$plot{'width'}.','.$plot{'height'}.' ';
973: $gnuplot_input .= "@Colors\n";
974: # set output
975: $gnuplot_input .= "set output\n";
976: } elsif ($target eq 'tex') {
1.92 matthew 977: $gnuplot_input .= "set term postscript eps monochrome solid \"Helvetica\" $pt \n";
1.68 sakharuk 978: $gnuplot_input .= "set output \"/home/httpd/perl/tmp/".
979: &Apache::lonnet::unescape($filename).".eps\"\n";
1.87 matthew 980: }
981: # cartesian or polar?
982: if (lc($plot{'plottype'}) eq 'polar') {
983: $gnuplot_input .= 'set polar'.$/;
984: } else {
985: # Assume Cartesian
1.51 matthew 986: }
1.7 matthew 987: # grid
1.10 matthew 988: $gnuplot_input .= 'set grid'.$/ if ($plot{'grid'} eq 'on');
1.7 matthew 989: # border
1.9 matthew 990: $gnuplot_input .= ($plot{'border'} eq 'on'?
991: 'set border'.$/ :
1.67 matthew 992: 'set noborder'.$/ );
1.77 matthew 993: # sampling rate for non-data curves
994: $gnuplot_input .= "set samples $plot{'samples'}\n";
1.67 matthew 995: # title, xlabel, ylabel
1.45 matthew 996: # titles
1.89 matthew 997: if ($target eq 'tex') {
1.92 matthew 998: $gnuplot_input .= "set title \"$title\" font \"Helvetica,".$pt."pt\"\n" if (defined($title)) ;
999: $gnuplot_input .= "set xlabel \"$xlabel\" font \"Helvetica,".$pt."pt\" \n" if (defined($xlabel));
1000: $gnuplot_input .= "set ylabel \"$ylabel\" font \"Helvetica,".$pt."pt\"\n" if (defined($ylabel));
1.89 matthew 1001: } else {
1002: $gnuplot_input .= "set title \"$title\" \n" if (defined($title)) ;
1003: $gnuplot_input .= "set xlabel \"$xlabel\" \n" if (defined($xlabel));
1004: $gnuplot_input .= "set ylabel \"$ylabel\" \n" if (defined($ylabel));
1005: }
1.45 matthew 1006: # tics
1007: if (%xtics) {
1008: $gnuplot_input .= "set xtics $xtics{'location'} ";
1.46 matthew 1009: $gnuplot_input .= ( $xtics{'mirror'} eq 'on'?"mirror ":"nomirror ");
1.45 matthew 1010: $gnuplot_input .= "$xtics{'start'}, ";
1011: $gnuplot_input .= "$xtics{'increment'}, ";
1012: $gnuplot_input .= "$xtics{'end'}\n";
1.89 matthew 1013: if ($xtics{'minorfreq'} != 0) {
1014: $gnuplot_input .= "set mxtics ".$xtics{'minorfreq'}."\n";
1015: }
1.45 matthew 1016: }
1017: if (%ytics) {
1018: $gnuplot_input .= "set ytics $ytics{'location'} ";
1.46 matthew 1019: $gnuplot_input .= ( $ytics{'mirror'} eq 'on'?"mirror ":"nomirror ");
1.45 matthew 1020: $gnuplot_input .= "$ytics{'start'}, ";
1021: $gnuplot_input .= "$ytics{'increment'}, ";
1022: $gnuplot_input .= "$ytics{'end'}\n";
1.89 matthew 1023: if ($ytics{'minorfreq'} != 0) {
1024: $gnuplot_input .= "set mytics ".$ytics{'minorfreq'}."\n";
1025: }
1.45 matthew 1026: }
1027: # axis
1.23 matthew 1028: if (%axis) {
1.13 matthew 1029: $gnuplot_input .= "set xrange \[$axis{'xmin'}:$axis{'xmax'}\]\n";
1030: $gnuplot_input .= "set yrange \[$axis{'ymin'}:$axis{'ymax'}\]\n";
1.6 matthew 1031: }
1032: # Key
1.23 matthew 1033: if (%key) {
1.9 matthew 1034: $gnuplot_input .= 'set key '.$key{'pos'}.' ';
1035: if ($key{'title'} ne '') {
1.67 matthew 1036: $gnuplot_input .= 'title "'.$key{'title'}.'" ';
1.11 matthew 1037: }
1038: $gnuplot_input .= ($key{'box'} eq 'on' ? 'box ' : 'nobox ').$/;
1.6 matthew 1039: } else {
1.9 matthew 1040: $gnuplot_input .= 'set nokey'.$/;
1.13 matthew 1041: }
1.6 matthew 1042: # labels
1.10 matthew 1043: my $label;
1.6 matthew 1044: foreach $label (@labels) {
1045: $gnuplot_input .= 'set label "'.$label->{'text'}.'" at '.
1.92 matthew 1046: $label->{'xpos'}.','.$label->{'ypos'}.' '.$label->{'justify'}.' font "Helvetica,'.$pt.'pt"'.$/ ;
1.6 matthew 1047: }
1.74 matthew 1048: if ($target eq 'tex') {
1.76 matthew 1049: $gnuplot_input .="set size 1,".$plot{'height'}/$plot{'width'}*1.38;
1.74 matthew 1050: $gnuplot_input .="\n";
1051: }
1.6 matthew 1052: # curves
1053: $gnuplot_input .= 'plot ';
1.9 matthew 1054: for (my $i = 0;$i<=$#curves;$i++) {
1055: $curve = $curves[$i];
1056: $gnuplot_input.= ', ' if ($i > 0);
1.6 matthew 1057: if (exists($curve->{'function'})) {
1.9 matthew 1058: $gnuplot_input.=
1059: $curve->{'function'}.' title "'.
1060: $curve->{'name'}.'" with '.
1.72 matthew 1061: $curve->{'linestyle'};
1.73 sakharuk 1062: $gnuplot_input.= ' linewidth 4 ' if ($target eq 'tex');
1.60 matthew 1063: if (($curve->{'linestyle'} eq 'points') ||
1064: ($curve->{'linestyle'} eq 'linespoints') ||
1065: ($curve->{'linestyle'} eq 'errorbars') ||
1066: ($curve->{'linestyle'} eq 'xerrorbars') ||
1067: ($curve->{'linestyle'} eq 'yerrorbars') ||
1068: ($curve->{'linestyle'} eq 'xyerrorbars')) {
1.62 matthew 1069: $gnuplot_input.=' pointtype '.$curve->{'pointtype'};
1.60 matthew 1070: $gnuplot_input.=' pointsize '.$curve->{'pointsize'};
1071: }
1.6 matthew 1072: } elsif (exists($curve->{'data'})) {
1.40 matthew 1073: # Store data values in $datatext
1074: my $datatext = '';
1075: # get new filename
1.70 matthew 1076: my $datafilename = "$tmpdir/$filename.data.$i";
1.40 matthew 1077: my $fh=Apache::File->new(">$datafilename");
1078: # Compile data
1.6 matthew 1079: my @Data = @{$curve->{'data'}};
1.9 matthew 1080: my @Data0 = @{$Data[0]};
1081: for (my $i =0; $i<=$#Data0; $i++) {
1.10 matthew 1082: my $dataset;
1.6 matthew 1083: foreach $dataset (@Data) {
1.9 matthew 1084: $datatext .= $dataset->[$i] . ' ';
1.6 matthew 1085: }
1.9 matthew 1086: $datatext .= $/;
1.6 matthew 1087: }
1.40 matthew 1088: # write file
1089: print $fh $datatext;
1090: close ($fh);
1091: # generate gnuplot text
1092: $gnuplot_input.= '"'.$datafilename.'" title "'.
1093: $curve->{'name'}.'" with '.
1094: $curve->{'linestyle'};
1.73 sakharuk 1095: $gnuplot_input.= ' linewidth 4 ' if ($target eq 'tex');
1.62 matthew 1096: if (($curve->{'linestyle'} eq 'points') ||
1097: ($curve->{'linestyle'} eq 'linespoints') ||
1098: ($curve->{'linestyle'} eq 'errorbars') ||
1099: ($curve->{'linestyle'} eq 'xerrorbars') ||
1100: ($curve->{'linestyle'} eq 'yerrorbars') ||
1101: ($curve->{'linestyle'} eq 'xyerrorbars')) {
1102: $gnuplot_input.=' pointtype '.$curve->{'pointtype'};
1103: $gnuplot_input.=' pointsize '.$curve->{'pointsize'};
1104: }
1.6 matthew 1105: }
1106: }
1.40 matthew 1107: # Write the output to a file.
1.70 matthew 1108: my $fh=Apache::File->new(">$tmpdir$filename.data");
1.40 matthew 1109: print $fh $gnuplot_input;
1110: close($fh);
1111: # That's all folks.
1112: return ;
1.2 matthew 1113: }
1.21 matthew 1114:
1115: #---------------------------------------------- check_inputs
1116: sub check_inputs {
1117: ## Note: no inputs, no outputs - this acts only on global variables.
1118: ## Make sure we have all the input we need:
1.47 matthew 1119: if (! %plot) { &set_defaults(\%plot,\%gnuplot_defaults); }
1.23 matthew 1120: if (! %key ) {} # No key for this plot, thats okay
1.34 matthew 1121: # if (! %axis) { &set_defaults(\%axis,\%axis_defaults); }
1.21 matthew 1122: if (! defined($title )) {} # No title for this plot, thats okay
1123: if (! defined($xlabel)) {} # No xlabel for this plot, thats okay
1124: if (! defined($ylabel)) {} # No ylabel for this plot, thats okay
1125: if ($#labels < 0) { } # No labels for this plot, thats okay
1126: if ($#curves < 0) {
1127: &Apache::lonxml::warning("No curves specified for plot!!!!");
1128: return '';
1129: }
1130: my $curve;
1131: foreach $curve (@curves) {
1132: if (!defined($curve->{'function'})&&!defined($curve->{'data'})){
1.85 matthew 1133: &Apache::lonxml::warning("One of the curves specified did not contain any curve data or curve function declarations\n");
1.21 matthew 1134: return '';
1135: }
1136: }
1137: }
1138:
1.20 matthew 1139: #------------------------------------------------ make_edit
1140: sub edit_attributes {
1.34 matthew 1141: my ($target,$token,$defaults,$keys) = @_;
1142: my ($result,@keys);
1143: if ($keys && ref($keys) eq 'ARRAY') {
1144: @keys = @$keys;
1145: } else {
1146: @keys = sort(keys(%$defaults));
1147: }
1148: foreach my $attr (@keys) {
1.35 matthew 1149: # append a ' ' to the description if it doesn't have one already.
1150: my $description = $defaults->{$attr}->{'description'};
1151: $description .= ' ' if ($description !~ / $/);
1.20 matthew 1152: if ($defaults->{$attr}->{'edit_type'} eq 'entry') {
1.35 matthew 1153: $result .= &Apache::edit::text_arg
1.38 matthew 1154: ($description,$attr,$token,
1155: $defaults->{$attr}->{'size'});
1.20 matthew 1156: } elsif ($defaults->{$attr}->{'edit_type'} eq 'choice') {
1.35 matthew 1157: $result .= &Apache::edit::select_arg
1158: ($description,$attr,$defaults->{$attr}->{'choices'},$token);
1.45 matthew 1159: } elsif ($defaults->{$attr}->{'edit_type'} eq 'onoff') {
1.35 matthew 1160: $result .= &Apache::edit::select_arg
1161: ($description,$attr,['on','off'],$token);
1.20 matthew 1162: }
1.25 matthew 1163: $result .= '<br />';
1.20 matthew 1164: }
1165: return $result;
1166: }
1.1 matthew 1167:
1.21 matthew 1168:
1169: ###################################################################
1170: ## ##
1171: ## Insertion functions for editing plots ##
1172: ## ##
1173: ###################################################################
1174:
1.47 matthew 1175: sub insert_gnuplot {
1.29 matthew 1176: my $result = '';
1.20 matthew 1177: # plot attributes
1.61 matthew 1178: $result .= "\n<gnuplot ";
1.47 matthew 1179: foreach my $attr (keys(%gnuplot_defaults)) {
1.61 matthew 1180: $result .= "\n $attr=\"$gnuplot_defaults{$attr}->{'default'}\"";
1.20 matthew 1181: }
1.61 matthew 1182: $result .= ">";
1.47 matthew 1183: # Add the components (most are commented out for simplicity)
1.44 matthew 1184: # $result .= &insert_key();
1185: # $result .= &insert_axis();
1186: # $result .= &insert_title();
1187: # $result .= &insert_xlabel();
1188: # $result .= &insert_ylabel();
1.20 matthew 1189: $result .= &insert_curve();
1.50 matthew 1190: # close up the <gnuplot>
1.61 matthew 1191: $result .= "\n</gnuplot>";
1.45 matthew 1192: return $result;
1193: }
1194:
1.46 matthew 1195: sub insert_tics {
1196: my $result;
1197: $result .= &insert_xtics() . &insert_ytics;
1198: return $result;
1199: }
1200:
1.45 matthew 1201: sub insert_xtics {
1202: my $result;
1.46 matthew 1203: $result .= "\n <xtics ";
1.45 matthew 1204: foreach my $attr (keys(%tic_defaults)) {
1.61 matthew 1205: $result .= "\n $attr=\"$tic_defaults{$attr}->{'default'}\" ";
1.45 matthew 1206: }
1.61 matthew 1207: $result .= "/>";
1.45 matthew 1208: return $result;
1209: }
1210:
1211: sub insert_ytics {
1212: my $result;
1.46 matthew 1213: $result .= "\n <ytics ";
1.45 matthew 1214: foreach my $attr (keys(%tic_defaults)) {
1.61 matthew 1215: $result .= "\n $attr=\"$tic_defaults{$attr}->{'default'}\" ";
1.45 matthew 1216: }
1.61 matthew 1217: $result .= "/>";
1.20 matthew 1218: return $result;
1219: }
1220:
1221: sub insert_key {
1222: my $result;
1.61 matthew 1223: $result .= "\n <key ";
1.30 matthew 1224: foreach my $attr (keys(%key_defaults)) {
1.61 matthew 1225: $result .= "\n $attr=\"$key_defaults{$attr}->{'default'}\"";
1.20 matthew 1226: }
1.61 matthew 1227: $result .= " />";
1.20 matthew 1228: return $result;
1229: }
1230:
1231: sub insert_axis{
1232: my $result;
1.46 matthew 1233: $result .= "\n <axis ";
1.30 matthew 1234: foreach my $attr (keys(%axis_defaults)) {
1.61 matthew 1235: $result .= "\n $attr=\"$axis_defaults{$attr}->{'default'}\"";
1.20 matthew 1236: }
1.61 matthew 1237: $result .= " />";
1.20 matthew 1238: return $result;
1239: }
1.28 matthew 1240:
1.61 matthew 1241: sub insert_title { return "\n <title></title>"; }
1242: sub insert_xlabel { return "\n <xlabel></xlabel>"; }
1243: sub insert_ylabel { return "\n <ylabel></ylabel>"; }
1.20 matthew 1244:
1245: sub insert_label {
1246: my $result;
1.46 matthew 1247: $result .= "\n <label ";
1.30 matthew 1248: foreach my $attr (keys(%label_defaults)) {
1.61 matthew 1249: $result .= "\n $attr=\"".
1250: $label_defaults{$attr}->{'default'}."\"";
1.20 matthew 1251: }
1.61 matthew 1252: $result .= "></label>";
1.20 matthew 1253: return $result;
1254: }
1255:
1256: sub insert_curve {
1257: my $result;
1.41 matthew 1258: $result .= "\n <curve ";
1.30 matthew 1259: foreach my $attr (keys(%curve_defaults)) {
1.61 matthew 1260: $result .= "\n $attr=\"".
1261: $curve_defaults{$attr}->{'default'}."\"";
1.20 matthew 1262: }
1.61 matthew 1263: $result .= " >";
1264: $result .= &insert_data().&insert_data()."\n </curve>";
1.20 matthew 1265: }
1.4 matthew 1266:
1.20 matthew 1267: sub insert_function {
1268: my $result;
1.61 matthew 1269: $result .= "\n <function></function>";
1.20 matthew 1270: return $result;
1271: }
1.4 matthew 1272:
1.20 matthew 1273: sub insert_data {
1274: my $result;
1.61 matthew 1275: $result .= "\n <data></data>";
1.20 matthew 1276: return $result;
1277: }
1.4 matthew 1278:
1.48 matthew 1279: ##----------------------------------------------------------------------
1.20 matthew 1280: 1;
1281: __END__
1.4 matthew 1282:
1283:
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