Annotation of loncom/xml/lonplot.pm, revision 1.64
1.1 matthew 1: # The LearningOnline Network with CAPA
2: # Dynamic plot
3: #
1.64 ! matthew 4: # $Id: lonplot.pm,v 1.63 2002/03/22 20:05:19 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: #
1.3 matthew 28: # 12/15/01 Matthew
1.31 matthew 29: # 12/17 12/18 12/19 12/20 12/21 12/27 12/28 12/30 12/31 Matthew
30: # 01/01/02 Matthew
1.35 matthew 31: # 01/02 01/03 01/04 01/07 01/08 01/09 Matthew
1.52 matthew 32: # 01/21 02/05 02/06 2/28Matthew
1.35 matthew 33:
1.1 matthew 34: package Apache::lonplot;
1.10 matthew 35:
1.1 matthew 36: use strict;
1.10 matthew 37: use Apache::File;
1.1 matthew 38: use Apache::response;
1.2 matthew 39: use Apache::lonxml;
1.20 matthew 40: use Apache::edit;
1.10 matthew 41:
1.33 harris41 42: BEGIN {
1.47 matthew 43: &Apache::lonxml::register('Apache::lonplot',('gnuplot'));
1.1 matthew 44: }
45:
1.10 matthew 46: ##
47: ## Description of data structures:
48: ##
49: ## %plot %key %axis
50: ## --------------------------
51: ## height title color
52: ## width box xmin
53: ## bgcolor pos xmax
54: ## fgcolor ymin
55: ## transparent ymax
56: ## grid
57: ## border
58: ## font
1.19 matthew 59: ## align
1.10 matthew 60: ##
61: ## @labels: $labels[$i] = \%label
62: ## %label: text, xpos, ypos, justify
1.14 matthew 63: ##
1.10 matthew 64: ## @curves: $curves[$i] = \%curve
1.14 matthew 65: ## %curve: name, linestyle, ( function | data )
1.10 matthew 66: ##
67: ## $curves[$i]->{'data'} = [ [x1,x2,x3,x4],
68: ## [y1,y2,y3,y4] ]
69: ##
1.21 matthew 70:
71: ###################################################################
72: ## ##
73: ## Tests used in checking the validitity of input ##
74: ## ##
75: ###################################################################
1.29 matthew 76:
1.32 matthew 77: my $max_str_len = 50; # if a label, title, xlabel, or ylabel text
78: # is longer than this, it will be truncated.
79:
1.29 matthew 80: my %linestyles =
81: (
82: lines => 2, # Maybe this will be used in the future
83: linespoints => 2, # to check on whether or not they have
84: dots => 2, # supplied enough <data></data> fields
85: points => 2, # to use the given line style. But for
86: steps => 2, # now there are more important things
87: fsteps => 2, # for me to deal with.
88: histeps => 2,
1.34 matthew 89: errorbars => 3,
90: xerrorbars => [3,4],
91: yerrorbars => [3,4],
1.35 matthew 92: xyerrorbars => [4,6],
1.34 matthew 93: boxes => 3,
1.35 matthew 94: vector => 4
1.29 matthew 95: );
96:
1.11 matthew 97: my $int_test = sub {$_[0]=~s/\s+//g;$_[0]=~/^\d+$/};
1.19 matthew 98: my $real_test =
99: sub {$_[0]=~s/\s+//g;$_[0]=~/^[+-]?\d*\.?\d*([eE][+-]\d+)?$/};
1.62 matthew 100: my $pos_real_test =
101: sub {$_[0]=~s/\s+//g;$_[0]=~/^[+]?\d*\.?\d*([eE][+-]\d+)?$/};
1.11 matthew 102: my $color_test = sub {$_[0]=~s/\s+//g;$_[0]=~/^x[\da-f]{6}$/};
1.1 matthew 103: my $onoff_test = sub {$_[0]=~/^(on|off)$/};
1.15 matthew 104: my $key_pos_test = sub {$_[0]=~/^(top|bottom|right|left|outside|below| )+$/};
1.1 matthew 105: my $sml_test = sub {$_[0]=~/^(small|medium|large)$/};
1.29 matthew 106: my $linestyle_test = sub {exists($linestyles{$_[0]})};
1.15 matthew 107: my $words_test = sub {$_[0]=~s/\s+/ /g;$_[0]=~/^([\w\(\)]+ ?)+$/};
1.21 matthew 108:
109: ###################################################################
110: ## ##
111: ## Attribute metadata ##
112: ## ##
113: ###################################################################
1.47 matthew 114: my @gnuplot_edit_order =
1.64 ! matthew 115: qw/alttag bgcolor fgcolor height width font transparent grid border align/;
1.48 matthew 116:
117: my $gnuplot_help_text = <<"ENDPLOTHELP";
118: <p>
119: The <b>gnuplot</b> tag allows an author to design a plot which can
120: be created on the fly. This is intended for use in homework problems
121: where each student needs to see a distinct plot. It can be used in
122: conjunction with a <b>script</b> tag to generate random plots.
123: </p><p>
124: A <b>gnuplot</b> tag can contain the following sub-tags:
125: </p>
126: <dl>
127: <dt> Plot Label
128: <dd> Allows you to place text at a given (x,y) coordinate on the plot.
129: <dt> Plot Title
130: <dd> The title of the plot
131: <dt> Plot Xlabel
132: <dd> The label on the horizontal axis of the plot
133: <dt> Plot Ylabel
134: <dd> The label on the vertical axis of the plot
135: <dt> Plot Axes
136: <dd> allows specification of the x and y ranges displayed in the plot
137: <dt> Plot Key
138: <dd> Lists the functions displayed in the plot.
139: <dt> Plot Curve
140: <dd> Sets the data used in the plot.
141: <dt> Plot Tics
142: <dd> Allows specification of the x and y coordinate 'tics' on the axes.
143: This is mostly used to adjust the grid lines when a grid is displayed.
144: </dl>
1.55 matthew 145: If you are having trouble with your plot, please read the help
146: available on Plot Curve.
1.48 matthew 147: ENDPLOTHELP
148:
1.47 matthew 149: my %gnuplot_defaults =
1.1 matthew 150: (
1.64 ! matthew 151: alttag => {
! 152: default => 'dynamically generated plot',
! 153: test => $words_test,
! 154: description => 'brief description of the plot',
! 155: edit_type => 'entry',
! 156: size => '40'
! 157: },
1.20 matthew 158: height => {
159: default => 200,
160: test => $int_test,
1.29 matthew 161: description => 'height of image (pixels)',
1.38 matthew 162: edit_type => 'entry',
163: size => '10'
1.20 matthew 164: },
165: width => {
166: default => 200,
167: test => $int_test,
1.29 matthew 168: description => 'width of image (pixels)',
1.38 matthew 169: edit_type => 'entry',
170: size => '10'
1.20 matthew 171: },
172: bgcolor => {
173: default => 'xffffff',
174: test => $color_test,
175: description => 'background color of image (xffffff)',
1.38 matthew 176: edit_type => 'entry',
177: size => '10'
1.20 matthew 178: },
179: fgcolor => {
180: default => 'x000000',
181: test => $color_test,
182: description => 'foreground color of image (x000000)',
1.38 matthew 183: edit_type => 'entry',
184: size => '10'
1.20 matthew 185: },
186: transparent => {
187: default => 'off',
188: test => $onoff_test,
1.34 matthew 189: description => 'Transparent image',
1.45 matthew 190: edit_type => 'onoff'
1.20 matthew 191: },
192: grid => {
193: default => 'off',
194: test => $onoff_test,
1.34 matthew 195: description => 'Display grid',
1.45 matthew 196: edit_type => 'onoff'
1.20 matthew 197: },
198: border => {
199: default => 'on',
200: test => $onoff_test,
1.34 matthew 201: description => 'Draw border around plot',
1.45 matthew 202: edit_type => 'onoff'
1.20 matthew 203: },
204: font => {
205: default => 'medium',
206: test => $sml_test,
207: description => 'Size of font to use',
208: edit_type => 'choice',
209: choices => ['small','medium','large']
210: },
211: align => {
212: default => 'left',
213: test => sub {$_[0]=~/^(left|right|center)$/},
214: description => 'alignment for image in html',
215: edit_type => 'choice',
216: choices => ['left','right','center']
217: }
1.1 matthew 218: );
219:
220: my %key_defaults =
221: (
1.20 matthew 222: title => {
223: default => '',
224: test => $words_test,
225: description => 'Title of key',
1.38 matthew 226: edit_type => 'entry',
227: size => '40'
1.20 matthew 228: },
229: box => {
230: default => 'off',
231: test => $onoff_test,
232: description => 'Draw a box around the key?',
1.45 matthew 233: edit_type => 'onoff'
1.20 matthew 234: },
235: pos => {
236: default => 'top right',
237: test => $key_pos_test,
238: description => 'position of the key on the plot',
239: edit_type => 'choice',
240: choices => ['top left','top right','bottom left','bottom right',
241: 'outside','below']
242: }
1.1 matthew 243: );
244:
245: my %label_defaults =
246: (
1.20 matthew 247: xpos => {
248: default => 0,
249: test => $real_test,
250: description => 'x position of label (graph coordinates)',
1.38 matthew 251: edit_type => 'entry',
252: size => '10'
1.20 matthew 253: },
254: ypos => {
255: default => 0,
256: test => $real_test,
257: description => 'y position of label (graph coordinates)',
1.38 matthew 258: edit_type => 'entry',
259: size => '10'
1.20 matthew 260: },
261: justify => {
262: default => 'left',
263: test => sub {$_[0]=~/^(left|right|center)$/},
264: description => 'justification of the label text on the plot',
265: edit_type => 'choice',
266: choices => ['left','right','center']
267: }
1.1 matthew 268: );
269:
1.45 matthew 270: my @tic_edit_order = ('location','mirror','start','increment','end');
271: my %tic_defaults =
272: (
273: location => {
274: default => 'border',
275: test => sub {$_[0]=~/^(border|axis)$/},
276: description => 'Location of tick marks',
277: edit_type => 'choice',
278: choices => ['border','axis']
279: },
280: mirror => {
281: default => 'on',
282: test => $onoff_test,
283: description => 'mirror ticks on opposite axis?',
284: edit_type => 'onoff'
285: },
286: start => {
287: default => '-10.0',
288: test => $real_test,
289: description => 'Start ticks at',
290: edit_type => 'entry',
291: size => '10'
292: },
293: increment => {
294: default => '1.0',
295: test => $real_test,
296: description => 'Place a tick every',
297: edit_type => 'entry',
298: size => '10'
299: },
300: end => {
301: default => ' 10.0',
302: test => $real_test,
303: description => 'Stop ticks at ',
304: edit_type => 'entry',
305: size => '10'
306: },
307: );
308:
1.1 matthew 309: my %axis_defaults =
310: (
1.28 matthew 311: color => {
1.20 matthew 312: default => 'x000000',
313: test => $color_test,
314: description => 'color of axes (x000000)',
1.38 matthew 315: edit_type => 'entry',
316: size => '10'
1.20 matthew 317: },
318: xmin => {
319: default => '-10.0',
320: test => $real_test,
321: description => 'minimum x-value shown in plot',
1.38 matthew 322: edit_type => 'entry',
323: size => '10'
1.20 matthew 324: },
325: xmax => {
326: default => ' 10.0',
327: test => $real_test,
328: description => 'maximum x-value shown in plot',
1.38 matthew 329: edit_type => 'entry',
330: size => '10'
1.20 matthew 331: },
332: ymin => {
333: default => '-10.0',
334: test => $real_test,
335: description => 'minimum y-value shown in plot',
1.38 matthew 336: edit_type => 'entry',
337: size => '10'
1.20 matthew 338: },
339: ymax => {
340: default => ' 10.0',
341: test => $real_test,
342: description => 'maximum y-value shown in plot',
1.38 matthew 343: edit_type => 'entry',
344: size => '10'
1.20 matthew 345: }
1.1 matthew 346: );
347:
1.48 matthew 348: my $curve_help_text = <<"ENDCURVEHELP";
349: The <b>curve</b> tag is where you set the data to be plotted by gnuplot.
350: There are two ways of entering the information:
351: <dl>
352: <dt> Curve Data
353: <dd> Using a <b>data</b> tag you can specify the numbers used to produce
354: the plot.
355: <p>
356: By default, two <b>data</b> tags will be available in a plot. The
357: first will specify X coordinates of the data and the second will
358: give the Y coordinates of the data. When working with a linestyle that
359: requires more than two data sets, inserting another <b>data</b> tag is
360: required. Unfortunately, you must make sure the <b>data</b> tags appear
361: in the order gnuplot expects the data.
362: </p><p>
363: Specifying the data should usually be done with a perl variable or array,
364: such as \@Xdata and \@Ydata. You may also specify numerical data seperated
365: by commas. Again, the order of the <b>data</b> tags is important. The
366: first tag will be the X data and the second will be the Y data.
367: </p>
368: <dt> Curve Function
369: <dd> The <b>function</b> tag allows you to specify the curve to be
1.57 matthew 370: plotted as a formula that gnuplot can understand. <b>Be careful using this
371: tag.</b> It is surprisingly easy to give gnuplot a function it cannot deal
1.48 matthew 372: with properly. Be explicit: 2*sin(2*3.141592*x/4) will work but
373: 2sin(2*3.141592x/4) will not. If you do not receive any errors in the
374: gnuplot data but still do not have an image produced, it is likely there
375: is an error in your <b>function</b> tag.
376: </dl>
377: ENDCURVEHELP
378:
1.62 matthew 379: my @curve_edit_order = ('color','name','linestyle','pointtype','pointsize');
1.60 matthew 380:
1.1 matthew 381: my %curve_defaults =
382: (
1.20 matthew 383: color => {
384: default => 'x000000',
385: test => $color_test,
386: description => 'color of curve (x000000)',
1.38 matthew 387: edit_type => 'entry',
388: size => '10'
1.20 matthew 389: },
390: name => {
391: default => '',
392: test => $words_test,
393: description => 'name of curve to appear in key',
1.38 matthew 394: edit_type => 'entry',
395: size => '20'
1.20 matthew 396: },
397: linestyle => {
398: default => 'lines',
399: test => $linestyle_test,
1.35 matthew 400: description => 'Line style',
1.20 matthew 401: edit_type => 'choice',
1.38 matthew 402: choices => [keys(%linestyles)]
1.60 matthew 403: },
404: # gnuplots term=gif driver does not handle linewidth :(
405: # linewidth => {
406: # default => 1,
407: # test => $int_test,
408: # description => 'Line width (may not apply to all line styles)',
409: # edit_type => 'choice',
410: # choices => [1,2,3,4,5,6,7,8,9,10]
411: # },
412: pointsize => {
413: default => 1,
1.62 matthew 414: test => $pos_real_test,
415: description => 'point size (may not apply to all line styles)',
416: edit_type => 'entry',
417: size => '5'
418: },
419: pointtype => {
420: default => 1,
1.60 matthew 421: test => $int_test,
1.62 matthew 422: description => 'point type (may not apply to all line styles)',
1.60 matthew 423: edit_type => 'choice',
1.62 matthew 424: choices => [0,1,2,3,4,5,6]
1.60 matthew 425: }
1.1 matthew 426: );
427:
1.21 matthew 428: ###################################################################
429: ## ##
430: ## parsing and edit rendering ##
431: ## ##
432: ###################################################################
1.45 matthew 433: my (%plot,%key,%axis,$title,$xlabel,$ylabel,@labels,@curves,%xtics,%ytics);
1.1 matthew 434:
1.47 matthew 435: sub start_gnuplot {
1.23 matthew 436: %plot = (); %key = (); %axis = ();
1.10 matthew 437: $title = undef; $xlabel = undef; $ylabel = undef;
438: $#labels = -1; $#curves = -1;
1.45 matthew 439: %xtics = (); %ytics = ();
1.6 matthew 440: #
1.1 matthew 441: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
442: my $result='';
1.25 matthew 443: &Apache::lonxml::register('Apache::lonplot',
1.45 matthew 444: ('title','xlabel','ylabel','key','axis','label','curve',
445: 'xtics','ytics'));
1.29 matthew 446: push (@Apache::lonxml::namespace,'lonplot');
1.51 matthew 447: if ($target eq 'web' || $target eq 'tex') {
1.47 matthew 448: &get_attributes(\%plot,\%gnuplot_defaults,$parstack,$safeeval,
1.17 matthew 449: $tagstack->[-1]);
1.20 matthew 450: } elsif ($target eq 'edit') {
1.47 matthew 451: $result .= &Apache::edit::tag_start($target,$token,'GnuPlot');
1.48 matthew 452: $result .= &make_javascript();
453: $result .= &help_win($gnuplot_help_text);
1.47 matthew 454: $result .= &edit_attributes($target,$token,\%gnuplot_defaults,
455: \@gnuplot_edit_order);
1.20 matthew 456: } elsif ($target eq 'modified') {
457: my $constructtag=&Apache::edit::get_new_args
1.47 matthew 458: ($token,$parstack,$safeeval,keys(%gnuplot_defaults));
1.20 matthew 459: if ($constructtag) {
460: $result = &Apache::edit::rebuild_tag($token);
461: }
1.4 matthew 462: }
1.21 matthew 463: return $result;
1.1 matthew 464: }
465:
1.47 matthew 466: sub end_gnuplot {
1.1 matthew 467: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
468: pop @Apache::lonxml::namespace;
1.4 matthew 469: &Apache::lonxml::deregister('Apache::lonplot',
470: ('title','xlabel','ylabel','key','axis','label','curve'));
471: my $result = '';
1.56 albertel 472: my $randnumber;
473: # need to call rand everytime start_script would evaluate, as the
474: # safe space rand number generator and the global rand generator
475: # are not seperate
476: if ($target eq 'web' || $target eq 'tex' || $target eq 'grade' ||
477: $target eq 'answer') {
478: $randnumber=int(rand(1000));
479: }
1.51 matthew 480: if ($target eq 'web' || $target eq 'tex') {
1.21 matthew 481: &check_inputs(); # Make sure we have all the data we need
1.13 matthew 482: ##
483: ## Determine filename
1.4 matthew 484: my $tmpdir = '/home/httpd/perl/tmp/';
1.12 matthew 485: my $filename = $ENV{'user.name'}.'_'.$ENV{'user.domain'}.
1.56 albertel 486: '_'.time.'_'.$$.$randnumber.'_plot.data';
1.4 matthew 487: ## Write the plot description to the file
1.51 matthew 488: &write_gnuplot_file($tmpdir,$filename,$target);
1.54 matthew 489: $filename = &Apache::lonnet::escape($filename);
1.4 matthew 490: ## return image tag for the plot
1.51 matthew 491: if ($target eq 'web') {
492: $result .= <<"ENDIMAGE";
1.53 matthew 493: <img src = "/cgi-bin/plot.gif?file=$filename&output=gif"
1.64 ! matthew 494: width = "$plot{'width'}"
1.16 matthew 495: height = "$plot{'height'}"
496: align = "$plot{'align'}"
1.64 ! matthew 497: alt = "$plot{'alttag'}" />
1.12 matthew 498: ENDIMAGE
1.51 matthew 499: } elsif ($target eq 'tex') {
1.53 matthew 500: &Apache::lonnet::ssi('cgi-bin/plot.gif?file=$filename'.
501: '&output=eps');
1.51 matthew 502: $result = "$filename.eps";
503: }
1.20 matthew 504: } elsif ($target eq 'edit') {
1.21 matthew 505: $result.=&Apache::edit::tag_end($target,$token);
1.4 matthew 506: }
1.1 matthew 507: return $result;
508: }
1.2 matthew 509:
1.45 matthew 510:
511: ##--------------------------------------------------------------- xtics
512: sub start_xtics {
513: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
514: my $result='';
1.51 matthew 515: if ($target eq 'web' || $target eq 'tex') {
1.45 matthew 516: &get_attributes(\%xtics,\%tic_defaults,$parstack,$safeeval,
517: $tagstack->[-1]);
518: } elsif ($target eq 'edit') {
519: $result .= &Apache::edit::tag_start($target,$token,'xtics');
520: $result .= &edit_attributes($target,$token,\%tic_defaults,
521: \@tic_edit_order);
522: } elsif ($target eq 'modified') {
523: my $constructtag=&Apache::edit::get_new_args
524: ($token,$parstack,$safeeval,keys(%tic_defaults));
525: if ($constructtag) {
526: $result = &Apache::edit::rebuild_tag($token);
527: }
528: }
529: return $result;
530: }
531:
532: sub end_xtics {
533: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
534: my $result = '';
1.51 matthew 535: if ($target eq 'web' || $target eq 'tex') {
1.45 matthew 536: } elsif ($target eq 'edit') {
537: $result.=&Apache::edit::tag_end($target,$token);
538: }
539: return $result;
540: }
541:
542: ##--------------------------------------------------------------- ytics
543: sub start_ytics {
544: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
545: my $result='';
1.51 matthew 546: if ($target eq 'web' || $target eq 'tex') {
1.45 matthew 547: &get_attributes(\%ytics,\%tic_defaults,$parstack,$safeeval,
548: $tagstack->[-1]);
549: } elsif ($target eq 'edit') {
550: $result .= &Apache::edit::tag_start($target,$token,'ytics');
551: $result .= &edit_attributes($target,$token,\%tic_defaults,
552: \@tic_edit_order);
553: } elsif ($target eq 'modified') {
554: my $constructtag=&Apache::edit::get_new_args
555: ($token,$parstack,$safeeval,keys(%tic_defaults));
556: if ($constructtag) {
557: $result = &Apache::edit::rebuild_tag($token);
558: }
559: }
560: return $result;
561: }
562:
563: sub end_ytics {
564: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
565: my $result = '';
1.51 matthew 566: if ($target eq 'web' || $target eq 'tex') {
1.45 matthew 567: } elsif ($target eq 'edit') {
568: $result.=&Apache::edit::tag_end($target,$token);
569: }
570: return $result;
571: }
572:
573:
1.1 matthew 574: ##----------------------------------------------------------------- key
575: sub start_key {
576: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
577: my $result='';
1.51 matthew 578: if ($target eq 'web' || $target eq 'tex') {
1.17 matthew 579: &get_attributes(\%key,\%key_defaults,$parstack,$safeeval,
1.11 matthew 580: $tagstack->[-1]);
1.20 matthew 581: } elsif ($target eq 'edit') {
1.25 matthew 582: $result .= &Apache::edit::tag_start($target,$token,'Plot Key');
1.21 matthew 583: $result .= &edit_attributes($target,$token,\%key_defaults);
1.20 matthew 584: } elsif ($target eq 'modified') {
585: my $constructtag=&Apache::edit::get_new_args
1.24 matthew 586: ($token,$parstack,$safeeval,keys(%key_defaults));
1.20 matthew 587: if ($constructtag) {
588: $result = &Apache::edit::rebuild_tag($token);
589: }
1.4 matthew 590: }
1.1 matthew 591: return $result;
592: }
593:
594: sub end_key {
595: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
596: my $result = '';
1.51 matthew 597: if ($target eq 'web' || $target eq 'tex') {
1.20 matthew 598: } elsif ($target eq 'edit') {
1.21 matthew 599: $result.=&Apache::edit::tag_end($target,$token);
1.4 matthew 600: }
1.1 matthew 601: return $result;
602: }
1.21 matthew 603:
1.1 matthew 604: ##------------------------------------------------------------------- title
605: sub start_title {
606: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
607: my $result='';
1.51 matthew 608: if ($target eq 'web' || $target eq 'tex') {
1.17 matthew 609: $title = &Apache::lonxml::get_all_text("/title",$$parser[-1]);
1.58 matthew 610: $title=&Apache::run::evaluate($title,$safeeval,$$parstack[-1]);
1.49 matthew 611: $title =~ s/\n/ /g;
1.32 matthew 612: if (length($title) > $max_str_len) {
613: $title = substr($title,0,$max_str_len);
614: }
1.20 matthew 615: } elsif ($target eq 'edit') {
1.25 matthew 616: $result.=&Apache::edit::tag_start($target,$token,'Plot Title');
1.22 matthew 617: my $text=&Apache::lonxml::get_all_text("/title",$$parser[-1]);
1.39 matthew 618: $result.=&Apache::edit::end_row().
619: &Apache::edit::start_spanning_row().
1.63 albertel 620: &Apache::edit::editline('',$text,'',60);
1.20 matthew 621: } elsif ($target eq 'modified') {
1.29 matthew 622: my $text=$$parser[-1]->get_text("/title");
1.42 matthew 623: $result.=&Apache::edit::rebuild_tag($token);
1.21 matthew 624: $result.=&Apache::edit::modifiedfield($token);
1.4 matthew 625: }
1.1 matthew 626: return $result;
627: }
628:
629: sub end_title {
630: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
631: my $result = '';
1.51 matthew 632: if ($target eq 'web' || $target eq 'tex') {
1.20 matthew 633: } elsif ($target eq 'edit') {
1.27 matthew 634: $result.=&Apache::edit::tag_end($target,$token);
1.4 matthew 635: }
1.1 matthew 636: return $result;
637: }
638: ##------------------------------------------------------------------- xlabel
639: sub start_xlabel {
640: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
641: my $result='';
1.51 matthew 642: if ($target eq 'web' || $target eq 'tex') {
1.17 matthew 643: $xlabel = &Apache::lonxml::get_all_text("/xlabel",$$parser[-1]);
1.58 matthew 644: $xlabel=&Apache::run::evaluate($xlabel,$safeeval,$$parstack[-1]);
1.49 matthew 645: $xlabel =~ s/\n/ /g;
1.32 matthew 646: if (length($xlabel) > $max_str_len) {
647: $xlabel = substr($xlabel,0,$max_str_len);
648: }
1.20 matthew 649: } elsif ($target eq 'edit') {
1.25 matthew 650: $result.=&Apache::edit::tag_start($target,$token,'Plot Xlabel');
1.22 matthew 651: my $text=&Apache::lonxml::get_all_text("/xlabel",$$parser[-1]);
1.39 matthew 652: $result.=&Apache::edit::end_row().
653: &Apache::edit::start_spanning_row().
1.63 albertel 654: &Apache::edit::editline('',$text,'',60);
1.20 matthew 655: } elsif ($target eq 'modified') {
1.29 matthew 656: my $text=$$parser[-1]->get_text("/xlabel");
1.42 matthew 657: $result.=&Apache::edit::rebuild_tag($token);
1.21 matthew 658: $result.=&Apache::edit::modifiedfield($token);
1.4 matthew 659: }
1.1 matthew 660: return $result;
661: }
662:
663: sub end_xlabel {
664: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
665: my $result = '';
1.51 matthew 666: if ($target eq 'web' || $target eq 'tex') {
1.20 matthew 667: } elsif ($target eq 'edit') {
1.27 matthew 668: $result.=&Apache::edit::tag_end($target,$token);
1.4 matthew 669: }
1.1 matthew 670: return $result;
671: }
1.21 matthew 672:
1.1 matthew 673: ##------------------------------------------------------------------- ylabel
674: sub start_ylabel {
675: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
676: my $result='';
1.51 matthew 677: if ($target eq 'web' || $target eq 'tex') {
1.17 matthew 678: $ylabel = &Apache::lonxml::get_all_text("/ylabel",$$parser[-1]);
1.58 matthew 679: $ylabel = &Apache::run::evaluate($ylabel,$safeeval,$$parstack[-1]);
1.49 matthew 680: $ylabel =~ s/\n/ /g;
1.32 matthew 681: if (length($ylabel) > $max_str_len) {
682: $ylabel = substr($ylabel,0,$max_str_len);
683: }
1.20 matthew 684: } elsif ($target eq 'edit') {
1.25 matthew 685: $result .= &Apache::edit::tag_start($target,$token,'Plot Ylabel');
1.22 matthew 686: my $text = &Apache::lonxml::get_all_text("/ylabel",$$parser[-1]);
1.39 matthew 687: $result .= &Apache::edit::end_row().
688: &Apache::edit::start_spanning_row().
1.63 albertel 689: &Apache::edit::editline('',$text,'',60);
1.20 matthew 690: } elsif ($target eq 'modified') {
1.29 matthew 691: my $text=$$parser[-1]->get_text("/ylabel");
1.42 matthew 692: $result.=&Apache::edit::rebuild_tag($token);
1.21 matthew 693: $result.=&Apache::edit::modifiedfield($token);
1.4 matthew 694: }
1.1 matthew 695: return $result;
696: }
697:
698: sub end_ylabel {
699: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
700: my $result = '';
1.51 matthew 701: if ($target eq 'web' || $target eq 'tex') {
1.20 matthew 702: } elsif ($target eq 'edit') {
1.27 matthew 703: $result.=&Apache::edit::tag_end($target,$token);
1.4 matthew 704: }
1.1 matthew 705: return $result;
706: }
1.21 matthew 707:
1.1 matthew 708: ##------------------------------------------------------------------- label
709: sub start_label {
710: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
711: my $result='';
1.51 matthew 712: if ($target eq 'web' || $target eq 'tex') {
1.17 matthew 713: my %label;
714: &get_attributes(\%label,\%label_defaults,$parstack,$safeeval,
1.11 matthew 715: $tagstack->[-1]);
1.32 matthew 716: my $text = &Apache::lonxml::get_all_text("/label",$$parser[-1]);
1.58 matthew 717: $text = &Apache::run::evaluate($text,$safeeval,$$parstack[-1]);
1.49 matthew 718: $text =~ s/\n/ /g;
1.32 matthew 719: $text = substr($text,0,$max_str_len) if (length($text) > $max_str_len);
720: $label{'text'} = $text;
1.17 matthew 721: push(@labels,\%label);
1.20 matthew 722: } elsif ($target eq 'edit') {
1.25 matthew 723: $result .= &Apache::edit::tag_start($target,$token,'Plot Label');
1.21 matthew 724: $result .= &edit_attributes($target,$token,\%label_defaults);
1.22 matthew 725: my $text = &Apache::lonxml::get_all_text("/label",$$parser[-1]);
1.39 matthew 726: $result .= &Apache::edit::end_row().
727: &Apache::edit::start_spanning_row().
1.63 albertel 728: &Apache::edit::editline('',$text,'',60);
1.20 matthew 729: } elsif ($target eq 'modified') {
1.42 matthew 730: &Apache::edit::get_new_args
1.24 matthew 731: ($token,$parstack,$safeeval,keys(%label_defaults));
1.42 matthew 732: $result.=&Apache::edit::rebuild_tag($token);
1.22 matthew 733: my $text=$$parser[-1]->get_text("/label");
1.21 matthew 734: $result.=&Apache::edit::modifiedfield($token);
1.4 matthew 735: }
1.1 matthew 736: return $result;
737: }
738:
739: sub end_label {
740: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
741: my $result = '';
1.51 matthew 742: if ($target eq 'web' || $target eq 'tex') {
1.20 matthew 743: } elsif ($target eq 'edit') {
1.21 matthew 744: $result.=&Apache::edit::tag_end($target,$token);
1.4 matthew 745: }
1.1 matthew 746: return $result;
747: }
748:
749: ##------------------------------------------------------------------- curve
750: sub start_curve {
751: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
752: my $result='';
1.25 matthew 753: &Apache::lonxml::register('Apache::lonplot',('function','data'));
754: push (@Apache::lonxml::namespace,'curve');
1.51 matthew 755: if ($target eq 'web' || $target eq 'tex') {
1.17 matthew 756: my %curve;
757: &get_attributes(\%curve,\%curve_defaults,$parstack,$safeeval,
1.11 matthew 758: $tagstack->[-1]);
1.17 matthew 759: push (@curves,\%curve);
1.20 matthew 760: } elsif ($target eq 'edit') {
1.26 matthew 761: $result .= &Apache::edit::tag_start($target,$token,'Curve');
1.48 matthew 762: $result .= &help_win($curve_help_text);
1.60 matthew 763: $result .= &edit_attributes($target,$token,\%curve_defaults,
764: \@curve_edit_order);
1.20 matthew 765: } elsif ($target eq 'modified') {
766: my $constructtag=&Apache::edit::get_new_args
1.35 matthew 767: ($token,$parstack,$safeeval,keys(%curve_defaults));
1.20 matthew 768: if ($constructtag) {
769: $result = &Apache::edit::rebuild_tag($token);
770: $result.= &Apache::edit::handle_insert();
771: }
1.4 matthew 772: }
1.1 matthew 773: return $result;
774: }
775:
776: sub end_curve {
777: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
778: my $result = '';
1.25 matthew 779: pop @Apache::lonxml::namespace;
780: &Apache::lonxml::deregister('Apache::lonplot',('function','data'));
1.51 matthew 781: if ($target eq 'web' || $target eq 'tex') {
1.20 matthew 782: } elsif ($target eq 'edit') {
1.21 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: ##------------------------------------------------------------ curve function
789: sub start_function {
790: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
791: my $result='';
1.51 matthew 792: if ($target eq 'web' || $target eq 'tex') {
1.17 matthew 793: if (exists($curves[-1]->{'data'})) {
794: &Apache::lonxml::warning('Use of <function> precludes use of <data>. The <data> will be omitted in favor of the <function> declaration.');
795: delete $curves[-1]->{'data'} ;
796: }
1.58 matthew 797: my $function = &Apache::lonxml::get_all_text("/function",$$parser[-1]);
798: $function = &Apache::run::evaluate($function,$safeeval,$$parstack[-1]);
799: $curves[-1]->{'function'} = $function;
1.20 matthew 800: } elsif ($target eq 'edit') {
1.37 matthew 801: $result .= &Apache::edit::tag_start($target,$token,'Gnuplot compatible curve function');
1.22 matthew 802: my $text = &Apache::lonxml::get_all_text("/function",$$parser[-1]);
1.39 matthew 803: $result .= &Apache::edit::end_row().
804: &Apache::edit::start_spanning_row().
1.63 albertel 805: &Apache::edit::editline('',$text,'',60);
1.20 matthew 806: } elsif ($target eq 'modified') {
1.42 matthew 807: $result.=&Apache::edit::rebuild_tag($token);
1.20 matthew 808: my $text=$$parser[-1]->get_text("/function");
809: $result.=&Apache::edit::modifiedfield($token);
1.4 matthew 810: }
1.1 matthew 811: return $result;
812: }
813:
814: sub end_function {
815: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
816: my $result = '';
1.51 matthew 817: if ($target eq 'web' || $target eq 'tex') {
1.20 matthew 818: } elsif ($target eq 'edit') {
1.26 matthew 819: $result .= &Apache::edit::end_table();
1.4 matthew 820: }
1.1 matthew 821: return $result;
822: }
1.21 matthew 823:
1.1 matthew 824: ##------------------------------------------------------------ curve data
825: sub start_data {
826: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
827: my $result='';
1.51 matthew 828: if ($target eq 'web' || $target eq 'tex') {
1.17 matthew 829: if (exists($curves[-1]->{'function'})) {
830: &Apache::lonxml::warning('Use of <data> precludes use of .'.
831: '<function>. The <function> will be omitted in favor of '.
832: 'the <data> declaration.');
833: delete($curves[-1]->{'function'});
834: }
835: my $datatext = &Apache::lonxml::get_all_text("/data",$$parser[-1]);
1.58 matthew 836: $datatext=&Apache::run::evaluate($datatext,$safeeval,$$parstack[-1]);
1.40 matthew 837: # Deal with cases where we're given an array...
838: if ($datatext =~ /^\@/) {
839: $datatext = &Apache::run::run('return "'.$datatext.'"',
840: $safeeval,1);
841: }
1.49 matthew 842: $datatext =~ s/\s+/ /g;
1.17 matthew 843: # Need to do some error checking on the @data array -
844: # make sure it's all numbers and make sure each array
845: # is of the same length.
846: my @data;
1.35 matthew 847: if ($datatext =~ /,/) { # comma deliminated
1.17 matthew 848: @data = split /,/,$datatext;
849: } else { # Assume it's space seperated.
850: @data = split / /,$datatext;
851: }
852: for (my $i=0;$i<=$#data;$i++) {
853: # Check that it's non-empty
1.19 matthew 854: if (! defined($data[$i])) {
855: &Apache::lonxml::warning(
856: 'undefined <data> value. Replacing with '.
857: ' pi/e = 1.15572734979092');
858: $data[$i] = 1.15572734979092;
859: }
1.17 matthew 860: # Check that it's a number
1.19 matthew 861: if (! &$real_test($data[$i]) & ! &$int_test($data[$i])) {
862: &Apache::lonxml::warning(
863: 'Bad <data> value of '.$data[$i].' Replacing with '.
864: ' pi/e = 1.15572734979092');
865: $data[$i] = 1.15572734979092;
866: }
1.17 matthew 867: }
1.35 matthew 868: # complain if the number of data points is not the same as
869: # in previous sets of data.
1.36 matthew 870: if (($curves[-1]->{'data'}) && ($#data != $#{@{$curves[-1]->{'data'}->[0]}})){
1.35 matthew 871: &Apache::lonxml::warning
872: ('Number of data points is not consistent with previous '.
873: 'number of data points');
874: }
1.17 matthew 875: push @{$curves[-1]->{'data'}},\@data;
1.20 matthew 876: } elsif ($target eq 'edit') {
1.37 matthew 877: $result .= &Apache::edit::tag_start($target,$token,'Comma or space deliminated curve data');
1.22 matthew 878: my $text = &Apache::lonxml::get_all_text("/data",$$parser[-1]);
1.39 matthew 879: $result .= &Apache::edit::end_row().
880: &Apache::edit::start_spanning_row().
1.63 albertel 881: &Apache::edit::editline('',$text,'',60);
1.20 matthew 882: } elsif ($target eq 'modified') {
1.42 matthew 883: $result.=&Apache::edit::rebuild_tag($token);
1.21 matthew 884: my $text=$$parser[-1]->get_text("/data");
885: $result.=&Apache::edit::modifiedfield($token);
1.4 matthew 886: }
1.1 matthew 887: return $result;
888: }
889:
890: sub end_data {
891: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
892: my $result = '';
1.51 matthew 893: if ($target eq 'web' || $target eq 'tex') {
1.20 matthew 894: } elsif ($target eq 'edit') {
1.26 matthew 895: $result .= &Apache::edit::end_table();
1.4 matthew 896: }
1.1 matthew 897: return $result;
898: }
899:
900: ##------------------------------------------------------------------- axis
901: sub start_axis {
902: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
903: my $result='';
1.51 matthew 904: if ($target eq 'web' || $target eq 'tex') {
1.17 matthew 905: &get_attributes(\%axis,\%axis_defaults,$parstack,$safeeval,
906: $tagstack->[-1]);
1.20 matthew 907: } elsif ($target eq 'edit') {
1.25 matthew 908: $result .= &Apache::edit::tag_start($target,$token,'Plot Axes');
1.21 matthew 909: $result .= &edit_attributes($target,$token,\%axis_defaults);
1.20 matthew 910: } elsif ($target eq 'modified') {
1.29 matthew 911: my $constructtag=&Apache::edit::get_new_args
912: ($token,$parstack,$safeeval,keys(%axis_defaults));
913: if ($constructtag) {
914: $result = &Apache::edit::rebuild_tag($token);
915: }
1.4 matthew 916: }
1.1 matthew 917: return $result;
918: }
919:
920: sub end_axis {
921: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
922: my $result = '';
1.51 matthew 923: if ($target eq 'web' || $target eq 'tex') {
1.20 matthew 924: } elsif ($target eq 'edit') {
1.21 matthew 925: $result.=&Apache::edit::tag_end($target,$token);
1.20 matthew 926: } elsif ($target eq 'modified') {
1.4 matthew 927: }
1.1 matthew 928: return $result;
929: }
930:
1.21 matthew 931: ###################################################################
932: ## ##
933: ## Utility Functions ##
934: ## ##
935: ###################################################################
936:
1.13 matthew 937: ##----------------------------------------------------------- set_defaults
938: sub set_defaults {
1.21 matthew 939: my ($var,$defaults) = @_;
1.13 matthew 940: my $key;
1.24 matthew 941: foreach $key (keys(%$defaults)) {
1.13 matthew 942: $var->{$key} = $defaults->{$key}->{'default'};
943: }
944: }
945:
1.1 matthew 946: ##------------------------------------------------------------------- misc
1.2 matthew 947: sub get_attributes{
1.21 matthew 948: my ($values,$defaults,$parstack,$safeeval,$tag) = @_;
1.24 matthew 949: foreach my $attr (keys(%{$defaults})) {
1.10 matthew 950: $values->{$attr} =
1.15 matthew 951: &Apache::lonxml::get_param($attr,$parstack,$safeeval);
1.10 matthew 952: if ($values->{$attr} eq '' | !defined($values->{$attr})) {
1.11 matthew 953: $values->{$attr} = $defaults->{$attr}->{'default'};
1.6 matthew 954: next;
955: }
1.10 matthew 956: my $test = $defaults->{$attr}->{'test'};
957: if (! &$test($values->{$attr})) {
1.6 matthew 958: &Apache::lonxml::warning
959: ($tag.':'.$attr.': Bad value.'.'Replacing your value with : '
1.11 matthew 960: .$defaults->{$attr}->{'default'} );
961: $values->{$attr} = $defaults->{$attr}->{'default'};
1.10 matthew 962: }
1.2 matthew 963: }
1.11 matthew 964: return ;
1.6 matthew 965: }
1.40 matthew 966:
1.15 matthew 967: ##------------------------------------------------------- write_gnuplot_file
1.6 matthew 968: sub write_gnuplot_file {
1.51 matthew 969: my ($tmpdir,$filename,$target)= @_;
1.6 matthew 970: my $gnuplot_input = '';
1.10 matthew 971: my $curve;
1.6 matthew 972: # Collect all the colors
973: my @Colors;
974: push @Colors, $plot{'bgcolor'};
975: push @Colors, $plot{'fgcolor'};
1.13 matthew 976: push @Colors, (defined($axis{'color'})?$axis{'color'}:$plot{'fgcolor'});
1.9 matthew 977: foreach $curve (@curves) {
978: push @Colors, ($curve->{'color'} ne '' ?
979: $curve->{'color'} :
1.13 matthew 980: $plot{'fgcolor'} );
1.6 matthew 981: }
982: # set term
1.51 matthew 983: if ($target eq 'web') {
984: $gnuplot_input .= 'set term gif ';
985: $gnuplot_input .= 'transparent ' if ($plot{'transparent'} eq 'on');
986: $gnuplot_input .= $plot{'font'} . ' ';
987: $gnuplot_input .= 'size '.$plot{'width'}.','.$plot{'height'}.' ';
988: $gnuplot_input .= "@Colors\n";
989: # set output
990: $gnuplot_input .= "set output\n";
991: } elsif ($target eq 'tex') {
992: $gnuplot_input .= "set term postscript eps monochrome\n";
993: $gnuplot_input .= "set output \"$filename.eps\"\n";
994: }
1.7 matthew 995: # grid
1.10 matthew 996: $gnuplot_input .= 'set grid'.$/ if ($plot{'grid'} eq 'on');
1.7 matthew 997: # border
1.9 matthew 998: $gnuplot_input .= ($plot{'border'} eq 'on'?
999: 'set border'.$/ :
1000: 'set noborder'.$/ ); # title, xlabel, ylabel
1.45 matthew 1001: # titles
1.13 matthew 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));
1.45 matthew 1005: # tics
1006: if (%xtics) {
1007: $gnuplot_input .= "set xtics $xtics{'location'} ";
1.46 matthew 1008: $gnuplot_input .= ( $xtics{'mirror'} eq 'on'?"mirror ":"nomirror ");
1.45 matthew 1009: $gnuplot_input .= "$xtics{'start'}, ";
1010: $gnuplot_input .= "$xtics{'increment'}, ";
1011: $gnuplot_input .= "$xtics{'end'}\n";
1012: }
1013: if (%ytics) {
1014: $gnuplot_input .= "set ytics $ytics{'location'} ";
1.46 matthew 1015: $gnuplot_input .= ( $ytics{'mirror'} eq 'on'?"mirror ":"nomirror ");
1.45 matthew 1016: $gnuplot_input .= "$ytics{'start'}, ";
1017: $gnuplot_input .= "$ytics{'increment'}, ";
1018: $gnuplot_input .= "$ytics{'end'}\n";
1019: }
1020: # axis
1.23 matthew 1021: if (%axis) {
1.13 matthew 1022: $gnuplot_input .= "set xrange \[$axis{'xmin'}:$axis{'xmax'}\]\n";
1023: $gnuplot_input .= "set yrange \[$axis{'ymin'}:$axis{'ymax'}\]\n";
1.6 matthew 1024: }
1025: # Key
1.23 matthew 1026: if (%key) {
1.9 matthew 1027: $gnuplot_input .= 'set key '.$key{'pos'}.' ';
1028: if ($key{'title'} ne '') {
1.43 matthew 1029: $gnuplot_input .= 'title " '.$key{'title'}.'" ';
1.11 matthew 1030: }
1031: $gnuplot_input .= ($key{'box'} eq 'on' ? 'box ' : 'nobox ').$/;
1.6 matthew 1032: } else {
1.9 matthew 1033: $gnuplot_input .= 'set nokey'.$/;
1.13 matthew 1034: }
1.6 matthew 1035: # labels
1.10 matthew 1036: my $label;
1.6 matthew 1037: foreach $label (@labels) {
1038: $gnuplot_input .= 'set label "'.$label->{'text'}.'" at '.
1.9 matthew 1039: $label->{'xpos'}.','.$label->{'ypos'}.' '.$label->{'justify'}.$/ ;
1.6 matthew 1040: }
1041: # curves
1042: $gnuplot_input .= 'plot ';
1.9 matthew 1043: for (my $i = 0;$i<=$#curves;$i++) {
1044: $curve = $curves[$i];
1045: $gnuplot_input.= ', ' if ($i > 0);
1.6 matthew 1046: if (exists($curve->{'function'})) {
1.9 matthew 1047: $gnuplot_input.=
1048: $curve->{'function'}.' title "'.
1049: $curve->{'name'}.'" with '.
1050: $curve->{'linestyle'};
1.60 matthew 1051: #
1052: # gnuplot's term=gif driver does not handle linewidths :(
1053: # . ' linewidth '. $curve->{'linewidth'};
1054: #
1055: if (($curve->{'linestyle'} eq 'points') ||
1056: ($curve->{'linestyle'} eq 'linespoints') ||
1057: ($curve->{'linestyle'} eq 'errorbars') ||
1058: ($curve->{'linestyle'} eq 'xerrorbars') ||
1059: ($curve->{'linestyle'} eq 'yerrorbars') ||
1060: ($curve->{'linestyle'} eq 'xyerrorbars')) {
1.62 matthew 1061: $gnuplot_input.=' pointtype '.$curve->{'pointtype'};
1.60 matthew 1062: $gnuplot_input.=' pointsize '.$curve->{'pointsize'};
1063: }
1.6 matthew 1064: } elsif (exists($curve->{'data'})) {
1.40 matthew 1065: # Store data values in $datatext
1066: my $datatext = '';
1067: # get new filename
1068: my $datafilename = "$tmpdir/$filename.$i";
1069: my $fh=Apache::File->new(">$datafilename");
1070: # Compile data
1.6 matthew 1071: my @Data = @{$curve->{'data'}};
1.9 matthew 1072: my @Data0 = @{$Data[0]};
1073: for (my $i =0; $i<=$#Data0; $i++) {
1.10 matthew 1074: my $dataset;
1.6 matthew 1075: foreach $dataset (@Data) {
1.9 matthew 1076: $datatext .= $dataset->[$i] . ' ';
1.6 matthew 1077: }
1.9 matthew 1078: $datatext .= $/;
1.6 matthew 1079: }
1.40 matthew 1080: # write file
1081: print $fh $datatext;
1082: close ($fh);
1083: # generate gnuplot text
1084: $gnuplot_input.= '"'.$datafilename.'" title "'.
1085: $curve->{'name'}.'" with '.
1086: $curve->{'linestyle'};
1.62 matthew 1087: if (($curve->{'linestyle'} eq 'points') ||
1088: ($curve->{'linestyle'} eq 'linespoints') ||
1089: ($curve->{'linestyle'} eq 'errorbars') ||
1090: ($curve->{'linestyle'} eq 'xerrorbars') ||
1091: ($curve->{'linestyle'} eq 'yerrorbars') ||
1092: ($curve->{'linestyle'} eq 'xyerrorbars')) {
1093: $gnuplot_input.=' pointtype '.$curve->{'pointtype'};
1094: $gnuplot_input.=' pointsize '.$curve->{'pointsize'};
1095: }
1.6 matthew 1096: }
1097: }
1.40 matthew 1098: # Write the output to a file.
1099: my $fh=Apache::File->new(">$tmpdir$filename");
1100: print $fh $gnuplot_input;
1101: close($fh);
1102: # That's all folks.
1103: return ;
1.2 matthew 1104: }
1.21 matthew 1105:
1106: #---------------------------------------------- check_inputs
1107: sub check_inputs {
1108: ## Note: no inputs, no outputs - this acts only on global variables.
1109: ## Make sure we have all the input we need:
1.47 matthew 1110: if (! %plot) { &set_defaults(\%plot,\%gnuplot_defaults); }
1.23 matthew 1111: if (! %key ) {} # No key for this plot, thats okay
1.34 matthew 1112: # if (! %axis) { &set_defaults(\%axis,\%axis_defaults); }
1.21 matthew 1113: if (! defined($title )) {} # No title for this plot, thats okay
1114: if (! defined($xlabel)) {} # No xlabel for this plot, thats okay
1115: if (! defined($ylabel)) {} # No ylabel for this plot, thats okay
1116: if ($#labels < 0) { } # No labels for this plot, thats okay
1117: if ($#curves < 0) {
1118: &Apache::lonxml::warning("No curves specified for plot!!!!");
1119: return '';
1120: }
1121: my $curve;
1122: foreach $curve (@curves) {
1123: if (!defined($curve->{'function'})&&!defined($curve->{'data'})){
1124: &Apache::lonxml::warning("One of the curves specified did not contain any <data> or <function> declarations\n");
1125: return '';
1126: }
1127: }
1128: }
1129:
1.20 matthew 1130: #------------------------------------------------ make_edit
1131: sub edit_attributes {
1.34 matthew 1132: my ($target,$token,$defaults,$keys) = @_;
1133: my ($result,@keys);
1134: if ($keys && ref($keys) eq 'ARRAY') {
1135: @keys = @$keys;
1136: } else {
1137: @keys = sort(keys(%$defaults));
1138: }
1139: foreach my $attr (@keys) {
1.35 matthew 1140: # append a ' ' to the description if it doesn't have one already.
1141: my $description = $defaults->{$attr}->{'description'};
1142: $description .= ' ' if ($description !~ / $/);
1.20 matthew 1143: if ($defaults->{$attr}->{'edit_type'} eq 'entry') {
1.35 matthew 1144: $result .= &Apache::edit::text_arg
1.38 matthew 1145: ($description,$attr,$token,
1146: $defaults->{$attr}->{'size'});
1.20 matthew 1147: } elsif ($defaults->{$attr}->{'edit_type'} eq 'choice') {
1.35 matthew 1148: $result .= &Apache::edit::select_arg
1149: ($description,$attr,$defaults->{$attr}->{'choices'},$token);
1.45 matthew 1150: } elsif ($defaults->{$attr}->{'edit_type'} eq 'onoff') {
1.35 matthew 1151: $result .= &Apache::edit::select_arg
1152: ($description,$attr,['on','off'],$token);
1.20 matthew 1153: }
1.25 matthew 1154: $result .= '<br />';
1.20 matthew 1155: }
1156: return $result;
1157: }
1.1 matthew 1158:
1.21 matthew 1159:
1160: ###################################################################
1161: ## ##
1162: ## Insertion functions for editing plots ##
1163: ## ##
1164: ###################################################################
1165:
1.47 matthew 1166: sub insert_gnuplot {
1.29 matthew 1167: my $result = '';
1.20 matthew 1168: # plot attributes
1.61 matthew 1169: $result .= "\n<gnuplot ";
1.47 matthew 1170: foreach my $attr (keys(%gnuplot_defaults)) {
1.61 matthew 1171: $result .= "\n $attr=\"$gnuplot_defaults{$attr}->{'default'}\"";
1.20 matthew 1172: }
1.61 matthew 1173: $result .= ">";
1.47 matthew 1174: # Add the components (most are commented out for simplicity)
1.44 matthew 1175: # $result .= &insert_key();
1176: # $result .= &insert_axis();
1177: # $result .= &insert_title();
1178: # $result .= &insert_xlabel();
1179: # $result .= &insert_ylabel();
1.20 matthew 1180: $result .= &insert_curve();
1.50 matthew 1181: # close up the <gnuplot>
1.61 matthew 1182: $result .= "\n</gnuplot>";
1.45 matthew 1183: return $result;
1184: }
1185:
1.46 matthew 1186: sub insert_tics {
1187: my $result;
1188: $result .= &insert_xtics() . &insert_ytics;
1189: return $result;
1190: }
1191:
1.45 matthew 1192: sub insert_xtics {
1193: my $result;
1.46 matthew 1194: $result .= "\n <xtics ";
1.45 matthew 1195: foreach my $attr (keys(%tic_defaults)) {
1.61 matthew 1196: $result .= "\n $attr=\"$tic_defaults{$attr}->{'default'}\" ";
1.45 matthew 1197: }
1.61 matthew 1198: $result .= "/>";
1.45 matthew 1199: return $result;
1200: }
1201:
1202: sub insert_ytics {
1203: my $result;
1.46 matthew 1204: $result .= "\n <ytics ";
1.45 matthew 1205: foreach my $attr (keys(%tic_defaults)) {
1.61 matthew 1206: $result .= "\n $attr=\"$tic_defaults{$attr}->{'default'}\" ";
1.45 matthew 1207: }
1.61 matthew 1208: $result .= "/>";
1.20 matthew 1209: return $result;
1210: }
1211:
1212: sub insert_key {
1213: my $result;
1.61 matthew 1214: $result .= "\n <key ";
1.30 matthew 1215: foreach my $attr (keys(%key_defaults)) {
1.61 matthew 1216: $result .= "\n $attr=\"$key_defaults{$attr}->{'default'}\"";
1.20 matthew 1217: }
1.61 matthew 1218: $result .= " />";
1.20 matthew 1219: return $result;
1220: }
1221:
1222: sub insert_axis{
1223: my $result;
1.46 matthew 1224: $result .= "\n <axis ";
1.30 matthew 1225: foreach my $attr (keys(%axis_defaults)) {
1.61 matthew 1226: $result .= "\n $attr=\"$axis_defaults{$attr}->{'default'}\"";
1.20 matthew 1227: }
1.61 matthew 1228: $result .= " />";
1.20 matthew 1229: return $result;
1230: }
1.28 matthew 1231:
1.61 matthew 1232: sub insert_title { return "\n <title></title>"; }
1233: sub insert_xlabel { return "\n <xlabel></xlabel>"; }
1234: sub insert_ylabel { return "\n <ylabel></ylabel>"; }
1.20 matthew 1235:
1236: sub insert_label {
1237: my $result;
1.46 matthew 1238: $result .= "\n <label ";
1.30 matthew 1239: foreach my $attr (keys(%label_defaults)) {
1.61 matthew 1240: $result .= "\n $attr=\"".
1241: $label_defaults{$attr}->{'default'}."\"";
1.20 matthew 1242: }
1.61 matthew 1243: $result .= "></label>";
1.20 matthew 1244: return $result;
1245: }
1246:
1247: sub insert_curve {
1248: my $result;
1.41 matthew 1249: $result .= "\n <curve ";
1.30 matthew 1250: foreach my $attr (keys(%curve_defaults)) {
1.61 matthew 1251: $result .= "\n $attr=\"".
1252: $curve_defaults{$attr}->{'default'}."\"";
1.20 matthew 1253: }
1.61 matthew 1254: $result .= " >";
1255: $result .= &insert_data().&insert_data()."\n </curve>";
1.20 matthew 1256: }
1.4 matthew 1257:
1.20 matthew 1258: sub insert_function {
1259: my $result;
1.61 matthew 1260: $result .= "\n <function></function>";
1.20 matthew 1261: return $result;
1262: }
1.4 matthew 1263:
1.20 matthew 1264: sub insert_data {
1265: my $result;
1.61 matthew 1266: $result .= "\n <data></data>";
1.20 matthew 1267: return $result;
1268: }
1.4 matthew 1269:
1.48 matthew 1270: ##----------------------------------------------------------------------
1271: # Javascript functions to display help for tags
1272:
1273: sub make_javascript {
1274: my $helpwindowwidth = 400;
1275: my $helpwindowheight = 400;
1276: my $result = '';
1277: $result.=<<"ENDFUNCTION";
1278: <script language="JavaScript">
1279: function openWin(text)
1280: {
1281: newWin = open("", "new_W", "width=$helpwindowwidth,height=$helpwindowheight,resizable=1,scrollbars=1");
1282: newWin.document.open("text/html", "replace");
1283: newWin.document.writeln(text);
1284: newWin.document.writeln('<center><a href=\"javascript:window.close()\">close this window</a></center>');
1285: newWin.document.close();
1286: }
1287: </script>
1288: ENDFUNCTION
1289: return $result;
1290: }
1291:
1292: sub help_win {
1293: my ($helptext)=@_;
1294: $helptext =~ s/\n/ /g;
1295: $helptext =~ s/\'/\\\'/g;
1296: my $result = '';
1297: $result.=<<"ENDWIN";
1298: <table width="100%"><tr><td align="right">
1299: <a href="javascript:openWin('$helptext')">help</a>
1300: </td></tr></table><hr />
1301: ENDWIN
1302: return $result;
1303: }
1.21 matthew 1304: ##----------------------------------------------------------------------
1.20 matthew 1305: 1;
1306: __END__
1.4 matthew 1307:
1308:
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