--- loncom/xml/lonplot.pm 2001/12/31 19:02:00 1.28 +++ loncom/xml/lonplot.pm 2003/10/24 17:35:32 1.92 @@ -1,7 +1,7 @@ # The LearningOnline Network with CAPA # Dynamic plot # -# $Id: lonplot.pm,v 1.28 2001/12/31 19:02:00 matthew Exp $ +# $Id: lonplot.pm,v 1.92 2003/10/24 17:35:32 matthew Exp $ # # Copyright Michigan State University Board of Trustees # @@ -26,17 +26,23 @@ # http://www.lon-capa.org/ # # 12/15/01 Matthew -# 12/17 12/18 12/19 12/20 12/21 12/27 12/28 12/30 Matthew +# 12/17 12/18 12/19 12/20 12/21 12/27 12/28 12/30 12/31 Matthew +# 01/01/02 Matthew +# 01/02 01/03 01/04 01/07 01/08 01/09 Matthew +# 01/21 02/05 02/06 2/28Matthew + package Apache::lonplot; use strict; +use warnings FATAL=>'all'; +no warnings 'uninitialized'; use Apache::File; use Apache::response; use Apache::lonxml; use Apache::edit; -sub BEGIN { - &Apache::lonxml::register('Apache::lonplot',('plot')); +BEGIN { + &Apache::lonxml::register('Apache::lonplot',('gnuplot')); } ## @@ -69,64 +75,134 @@ sub BEGIN { ## Tests used in checking the validitity of input ## ## ## ################################################################### + +my $max_str_len = 50; # if a label, title, xlabel, or ylabel text + # is longer than this, it will be truncated. + +my %linestyles = + ( + lines => 2, # Maybe this will be used in the future + linespoints => 2, # to check on whether or not they have + dots => 2, # supplied enough fields + points => 2, # to use the given line style. But for + steps => 2, # now there are more important things + fsteps => 2, # for me to deal with. + histeps => 2, + errorbars => 3, + xerrorbars => [3,4], + yerrorbars => [3,4], + xyerrorbars => [4,6], + boxes => 3, + vector => 4 + ); + my $int_test = sub {$_[0]=~s/\s+//g;$_[0]=~/^\d+$/}; my $real_test = sub {$_[0]=~s/\s+//g;$_[0]=~/^[+-]?\d*\.?\d*([eE][+-]\d+)?$/}; -my $color_test = sub {$_[0]=~s/\s+//g;$_[0]=~/^x[\da-f]{6}$/}; +my $pos_real_test = + sub {$_[0]=~s/\s+//g;$_[0]=~/^[+]?\d*\.?\d*([eE][+-]\d+)?$/}; +my $color_test = sub {$_[0]=~s/\s+//g;$_[0]=~/^x[\da-fA-F]{6}$/}; my $onoff_test = sub {$_[0]=~/^(on|off)$/}; my $key_pos_test = sub {$_[0]=~/^(top|bottom|right|left|outside|below| )+$/}; my $sml_test = sub {$_[0]=~/^(small|medium|large)$/}; -my $linestyle_test = sub {$_[0]=~/^(lines|linespoints|dots|points|steps)$/}; -my $words_test = sub {$_[0]=~s/\s+/ /g;$_[0]=~/^([\w\(\)]+ ?)+$/}; +my $linestyle_test = sub {exists($linestyles{$_[0]})}; +my $words_test = sub {$_[0]=~s/\s+/ /g;$_[0]=~/^([\w~!\@\#\$\%^&\*\(\)-=_\+\[\]\{\}:\;\'<>,\.\/\?\\]+ ?)+$/}; ################################################################### ## ## ## Attribute metadata ## ## ## ################################################################### -my %plot_defaults = +my @gnuplot_edit_order = + qw/alttag bgcolor fgcolor height width font transparent grid samples + border align texwidth texfont plottype/; + +my $gnuplot_help_text = <<"ENDPLOTHELP"; +

+The gnuplot tag allows an author to design a plot which can +be created on the fly. This is intended for use in homework problems +where each student needs to see a distinct plot. It can be used in +conjunction with a script tag to generate random plots. +

+A gnuplot tag can contain the following sub-tags: +

+
+
Plot Label +
Allows you to place text at a given (x,y) coordinate on the plot. +
Plot Title +
The title of the plot +
Plot Xlabel +
The label on the horizontal axis of the plot +
Plot Ylabel +
The label on the vertical axis of the plot +
Plot Axes +
allows specification of the x and y ranges displayed in the plot +
Plot Key +
Lists the functions displayed in the plot. +
Plot Curve +
Sets the data used in the plot. +
Plot Tics +
Allows specification of the x and y coordinate 'tics' on the axes. +This is mostly used to adjust the grid lines when a grid is displayed. +
+If you are having trouble with your plot, please read the help +available on Plot Curve. +ENDPLOTHELP + +my %gnuplot_defaults = ( + alttag => { + default => 'dynamically generated plot', + test => $words_test, + description => 'brief description of the plot', + edit_type => 'entry', + size => '40' + }, height => { - default => 200, + default => 300, test => $int_test, - description => 'vertical size of image (pixels)', - edit_type => 'entry' + description => 'height of image (pixels)', + edit_type => 'entry', + size => '10' }, width => { - default => 200, + default => 400, test => $int_test, - description => 'horizontal size of image (pixels)', - edit_type => 'entry' + description => 'width of image (pixels)', + edit_type => 'entry', + size => '10' }, bgcolor => { default => 'xffffff', test => $color_test, description => 'background color of image (xffffff)', - edit_type => 'entry' + edit_type => 'entry', + size => '10' }, fgcolor => { default => 'x000000', test => $color_test, description => 'foreground color of image (x000000)', - edit_type => 'entry' + edit_type => 'entry', + size => '10' }, transparent => { default => 'off', test => $onoff_test, - description => '', - edit_type => 'on_off' + description => 'Transparent image', + edit_type => 'onoff' }, grid => { - default => 'off', + default => 'on', test => $onoff_test, - description => '', - edit_type => 'on_off' + description => 'Display grid', + edit_type => 'onoff' }, border => { default => 'on', test => $onoff_test, - description => '', - edit_type => 'on_off' + description => 'Draw border around plot', + edit_type => 'onoff' }, font => { default => 'medium', @@ -135,13 +211,41 @@ my %plot_defaults = edit_type => 'choice', choices => ['small','medium','large'] }, + samples => { + default => '100', + test => $int_test, + description => 'Number of samples for non-data plots', + edit_type => 'choice', + choices => ['100','200','500','1000','2000','5000'] + }, align => { - default => 'left', + default => 'center', test => sub {$_[0]=~/^(left|right|center)$/}, description => 'alignment for image in html', edit_type => 'choice', choices => ['left','right','center'] - } + }, + texwidth => { + default => '93', + test => $int_test, + description => 'Width of plot when printed (mm)', + edit_type => 'entry', + size => '5' + }, + texfont => { + default => '22', + test => $int_test, + description => 'Font size to use in TeX output (pts):', + edit_type => 'choice', + choices => [qw/10 12 14 16 18 20 22 24 26 28 30 32 34 36/], + }, + plottype => { + default => 'Cartesian', + test => sub {$_[0]=~/^(Polar|Cartesian)$/}, + description => 'Plot type:', + edit_type => 'choice', + choices => ['Polar','Cartesian'] + }, ); my %key_defaults = @@ -150,13 +254,14 @@ my %key_defaults = default => '', test => $words_test, description => 'Title of key', - edit_type => 'entry' + edit_type => 'entry', + size => '40' }, box => { default => 'off', test => $onoff_test, description => 'Draw a box around the key?', - edit_type => 'on_off' + edit_type => 'onoff' }, pos => { default => 'top right', @@ -174,13 +279,15 @@ my %label_defaults = default => 0, test => $real_test, description => 'x position of label (graph coordinates)', - edit_type => 'entry' + edit_type => 'entry', + size => '10' }, ypos => { default => 0, test => $real_test, description => 'y position of label (graph coordinates)', - edit_type => 'entry' + edit_type => 'entry', + size => '10' }, justify => { default => 'left', @@ -191,61 +298,171 @@ my %label_defaults = } ); +my @tic_edit_order = ('location','mirror','start','increment','end', + 'minorfreq'); +my %tic_defaults = + ( + location => { + default => 'border', + test => sub {$_[0]=~/^(border|axis)$/}, + description => 'Location of major tic marks', + edit_type => 'choice', + choices => ['border','axis'] + }, + mirror => { + default => 'on', + test => $onoff_test, + description => 'mirror tics on opposite axis?', + edit_type => 'onoff' + }, + start => { + default => '-10.0', + test => $real_test, + description => 'Start major tics at', + edit_type => 'entry', + size => '10' + }, + increment => { + default => '1.0', + test => $real_test, + description => 'Place a major tic every', + edit_type => 'entry', + size => '10' + }, + end => { + default => ' 10.0', + test => $real_test, + description => 'Stop major tics at ', + edit_type => 'entry', + size => '10' + }, + minorfreq => { + default => '0', + test => $int_test, + description => 'Number of minor tics between major tic marks', + edit_type => 'entry', + size => '10' + }, + ); + +my @axis_edit_order = ('color','xmin','xmax','ymin','ymax'); my %axis_defaults = ( color => { default => 'x000000', test => $color_test, - description => 'color of axes (x000000)', - edit_type => 'entry' + description => 'color of grid lines (x000000)', + edit_type => 'entry', + size => '10' }, xmin => { default => '-10.0', test => $real_test, description => 'minimum x-value shown in plot', - edit_type => 'entry' + edit_type => 'entry', + size => '10' }, xmax => { default => ' 10.0', test => $real_test, description => 'maximum x-value shown in plot', - edit_type => 'entry' + edit_type => 'entry', + size => '10' }, ymin => { default => '-10.0', test => $real_test, description => 'minimum y-value shown in plot', - edit_type => 'entry' + edit_type => 'entry', + size => '10' }, ymax => { default => ' 10.0', test => $real_test, description => 'maximum y-value shown in plot', - edit_type => 'entry' + edit_type => 'entry', + size => '10' } ); +my $curve_help_text = <<"ENDCURVEHELP"; +The curve tag is where you set the data to be plotted by gnuplot. +There are two ways of entering the information: +
+
Curve Data +
Using a data tag you can specify the numbers used to produce +the plot. +

+By default, two data tags will be available in a plot. The +first will specify X coordinates of the data and the second will +give the Y coordinates of the data. When working with a linestyle that +requires more than two data sets, inserting another data tag is +required. Unfortunately, you must make sure the data tags appear +in the order gnuplot expects the data. +

+Specifying the data should usually be done with a perl variable or array, +such as \@Xdata and \@Ydata. You may also specify numerical data seperated +by commas. Again, the order of the data tags is important. The +first tag will be the X data and the second will be the Y data. +

+
Curve Function +
The function tag allows you to specify the curve to be +plotted as a formula that gnuplot can understand. Be careful using this +tag. It is surprisingly easy to give gnuplot a function it cannot deal +with properly. Be explicit: 2*sin(2*3.141592*x/4) will work but +2sin(2*3.141592x/4) will not. If you do not receive any errors in the +gnuplot data but still do not have an image produced, it is likely there +is an error in your function tag. +
+ENDCURVEHELP + +my @curve_edit_order = ('color','name','linestyle','pointtype','pointsize'); + my %curve_defaults = ( color => { default => 'x000000', test => $color_test, description => 'color of curve (x000000)', - edit_type => 'entry' + edit_type => 'entry', + size => '10' }, name => { default => '', test => $words_test, description => 'name of curve to appear in key', - edit_type => 'entry' + edit_type => 'entry', + size => '20' }, linestyle => { default => 'lines', test => $linestyle_test, - description => 'Style of the axis lines', + description => 'Line style', edit_type => 'choice', - choices => ['lines','linespoints','dots','points','steps'] - } + choices => [keys(%linestyles)] + }, +# gnuplots term=gif driver does not handle linewidth :( +# linewidth => { +# default => 1, +# test => $int_test, +# description => 'Line width (may not apply to all line styles)', +# edit_type => 'choice', +# choices => [1,2,3,4,5,6,7,8,9,10] +# }, + pointsize => { + default => 1, + test => $pos_real_test, + description => 'point size (may not apply to all line styles)', + edit_type => 'entry', + size => '5' + }, + pointtype => { + default => 1, + test => $int_test, + description => 'point type (may not apply to all line styles)', + edit_type => 'choice', + choices => [0,1,2,3,4,5,6] + } ); ################################################################### @@ -253,77 +470,152 @@ my %curve_defaults = ## parsing and edit rendering ## ## ## ################################################################### -my (%plot,%key,%axis,$title,$xlabel,$ylabel,@labels,@curves); +my (%plot,%key,%axis,$title,$xlabel,$ylabel,@labels,@curves,%xtics,%ytics); -sub start_plot { - %plot = (); %key = (); %axis = (); - $title = undef; $xlabel = undef; $ylabel = undef; - $#labels = -1; $#curves = -1; +sub start_gnuplot { + undef(%plot); undef(%key); undef(%axis); + undef($title); undef($xlabel); undef($ylabel); + undef(@labels); undef(@curves); + undef(%xtics); undef(%ytics); # my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; my $result=''; &Apache::lonxml::register('Apache::lonplot', - ('title','xlabel','ylabel','key','axis','label','curve')); - push (@Apache::lonxml::namespace,'plot'); - my $inside = &Apache::lonxml::get_all_text("/plot",$$parser[-1]); - if ($target eq 'web') { - $inside=&Apache::run::evaluate($inside,$safeeval,$$parstack[-1]); - } - &Apache::lonxml::newparser($parser,\$inside); - if ($target eq 'web') { - &get_attributes(\%plot,\%plot_defaults,$parstack,$safeeval, + ('title','xlabel','ylabel','key','axis','label','curve', + 'xtics','ytics')); + push (@Apache::lonxml::namespace,'lonplot'); + if ($target eq 'web' || $target eq 'tex') { + &get_attributes(\%plot,\%gnuplot_defaults,$parstack,$safeeval, $tagstack->[-1]); } elsif ($target eq 'edit') { - $result .= &Apache::edit::tag_start($target,$token,'Plot'); - $result .= &edit_attributes($target,$token,\%plot_defaults); + $result .= &Apache::edit::tag_start($target,$token,'GnuPlot'); + $result .= &make_javascript(); + $result .= &help_win($gnuplot_help_text); + $result .= &edit_attributes($target,$token,\%gnuplot_defaults, + \@gnuplot_edit_order); } elsif ($target eq 'modified') { my $constructtag=&Apache::edit::get_new_args - ($token,$parstack,$safeeval,keys(%plot_defaults)); + ($token,$parstack,$safeeval,keys(%gnuplot_defaults)); if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); -# $result.= &Apache::edit::handle_insert(); } } return $result; } -sub end_plot { +sub end_gnuplot { my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; - pop @Apache::lonxml::namespace; &Apache::lonxml::deregister('Apache::lonplot', ('title','xlabel','ylabel','key','axis','label','curve')); my $result = ''; - if ($target eq 'web') { + my $randnumber; + # need to call rand everytime start_script would evaluate, as the + # safe space rand number generator and the global rand generator + # are not seperate + if ($target eq 'web' || $target eq 'tex' || $target eq 'grade' || + $target eq 'answer') { + $randnumber=int(rand(1000)); + } + if ($target eq 'web' || $target eq 'tex') { &check_inputs(); # Make sure we have all the data we need ## ## Determine filename my $tmpdir = '/home/httpd/perl/tmp/'; my $filename = $ENV{'user.name'}.'_'.$ENV{'user.domain'}. - '_'.time.'_'.$$.'_plot.data'; + '_'.time.'_'.$$.$randnumber.'_plot'; ## Write the plot description to the file - my $fh=Apache::File->new(">$tmpdir$filename"); - print $fh &write_gnuplot_file(); - close($fh); + &write_gnuplot_file($tmpdir,$filename,$target); + $filename = &Apache::lonnet::escape($filename); ## return image tag for the plot - $result .= <<"ENDIMAGE"; -/cgi-bin/plot.gif?$filename + alt = "$plot{'alttag'}" /> ENDIMAGE + } elsif ($target eq 'tex') { + #might be inside the safe space, register the URL for later + &Apache::lonxml::register_ssi("/cgi-bin/plot.gif?file=$filename.data&output=eps"); + $result = '\graphicspath{{/home/httpd/perl/tmp/}}\includegraphics[width='.$plot{'texwidth'}.' mm]{'.&Apache::lonnet::unescape($filename).'.eps}'; + } } elsif ($target eq 'edit') { $result.=&Apache::edit::tag_end($target,$token); } return $result; } + +##--------------------------------------------------------------- xtics +sub start_xtics { + my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; + my $result=''; + if ($target eq 'web' || $target eq 'tex') { + &get_attributes(\%xtics,\%tic_defaults,$parstack,$safeeval, + $tagstack->[-1]); + } elsif ($target eq 'edit') { + $result .= &Apache::edit::tag_start($target,$token,'xtics'); + $result .= &edit_attributes($target,$token,\%tic_defaults, + \@tic_edit_order); + } elsif ($target eq 'modified') { + my $constructtag=&Apache::edit::get_new_args + ($token,$parstack,$safeeval,keys(%tic_defaults)); + if ($constructtag) { + $result = &Apache::edit::rebuild_tag($token); + } + } + return $result; +} + +sub end_xtics { + my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; + my $result = ''; + if ($target eq 'web' || $target eq 'tex') { + } elsif ($target eq 'edit') { + $result.=&Apache::edit::tag_end($target,$token); + } + return $result; +} + +##--------------------------------------------------------------- ytics +sub start_ytics { + my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; + my $result=''; + if ($target eq 'web' || $target eq 'tex') { + &get_attributes(\%ytics,\%tic_defaults,$parstack,$safeeval, + $tagstack->[-1]); + } elsif ($target eq 'edit') { + $result .= &Apache::edit::tag_start($target,$token,'ytics'); + $result .= &edit_attributes($target,$token,\%tic_defaults, + \@tic_edit_order); + } elsif ($target eq 'modified') { + my $constructtag=&Apache::edit::get_new_args + ($token,$parstack,$safeeval,keys(%tic_defaults)); + if ($constructtag) { + $result = &Apache::edit::rebuild_tag($token); + } + } + return $result; +} + +sub end_ytics { + my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; + my $result = ''; + if ($target eq 'web' || $target eq 'tex') { + } elsif ($target eq 'edit') { + $result.=&Apache::edit::tag_end($target,$token); + } + return $result; +} + + ##----------------------------------------------------------------- key sub start_key { my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; my $result=''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'tex') { &get_attributes(\%key,\%key_defaults,$parstack,$safeeval, $tagstack->[-1]); } elsif ($target eq 'edit') { @@ -334,7 +626,6 @@ sub start_key { ($token,$parstack,$safeeval,keys(%key_defaults)); if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); - $result.= &Apache::edit::handle_insert(); } } return $result; @@ -343,7 +634,7 @@ sub start_key { sub end_key { my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; my $result = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'tex') { } elsif ($target eq 'edit') { $result.=&Apache::edit::tag_end($target,$token); } @@ -354,15 +645,22 @@ sub end_key { sub start_title { my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; my $result=''; - if ($target eq 'web') { - $title = &Apache::lonxml::get_all_text("/title",$$parser[-1]); + if ($target eq 'web' || $target eq 'tex') { + $title = &Apache::lonxml::get_all_text("/title",$parser); + $title=&Apache::run::evaluate($title,$safeeval,$$parstack[-1]); + $title =~ s/\n/ /g; + if (length($title) > $max_str_len) { + $title = substr($title,0,$max_str_len); + } } elsif ($target eq 'edit') { $result.=&Apache::edit::tag_start($target,$token,'Plot Title'); - my $text=&Apache::lonxml::get_all_text("/title",$$parser[-1]); - $result.=''. - &Apache::edit::editfield('',$text,'',20,1); + my $text=&Apache::lonxml::get_all_text("/title",$parser); + $result.=&Apache::edit::end_row(). + &Apache::edit::start_spanning_row(). + &Apache::edit::editline('',$text,'',60); } elsif ($target eq 'modified') { - my $text=$$parser[-1]->get_text("/function"); + my $text=$$parser[-1]->get_text("/title"); + $result.=&Apache::edit::rebuild_tag($token); $result.=&Apache::edit::modifiedfield($token); } return $result; @@ -371,7 +669,7 @@ sub start_title { sub end_title { my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; my $result = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'tex') { } elsif ($target eq 'edit') { $result.=&Apache::edit::tag_end($target,$token); } @@ -381,15 +679,22 @@ sub end_title { sub start_xlabel { my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; my $result=''; - if ($target eq 'web') { - $xlabel = &Apache::lonxml::get_all_text("/xlabel",$$parser[-1]); + if ($target eq 'web' || $target eq 'tex') { + $xlabel = &Apache::lonxml::get_all_text("/xlabel",$parser); + $xlabel=&Apache::run::evaluate($xlabel,$safeeval,$$parstack[-1]); + $xlabel =~ s/\n/ /g; + if (length($xlabel) > $max_str_len) { + $xlabel = substr($xlabel,0,$max_str_len); + } } elsif ($target eq 'edit') { $result.=&Apache::edit::tag_start($target,$token,'Plot Xlabel'); - my $text=&Apache::lonxml::get_all_text("/xlabel",$$parser[-1]); - $result.=''. - &Apache::edit::editfield('',$text,'',20,1); + my $text=&Apache::lonxml::get_all_text("/xlabel",$parser); + $result.=&Apache::edit::end_row(). + &Apache::edit::start_spanning_row(). + &Apache::edit::editline('',$text,'',60); } elsif ($target eq 'modified') { - my $text=$$parser[-1]->get_text("/function"); + my $text=$$parser[-1]->get_text("/xlabel"); + $result.=&Apache::edit::rebuild_tag($token); $result.=&Apache::edit::modifiedfield($token); } return $result; @@ -398,7 +703,7 @@ sub start_xlabel { sub end_xlabel { my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; my $result = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'tex') { } elsif ($target eq 'edit') { $result.=&Apache::edit::tag_end($target,$token); } @@ -409,15 +714,22 @@ sub end_xlabel { sub start_ylabel { my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; my $result=''; - if ($target eq 'web') { - $ylabel = &Apache::lonxml::get_all_text("/ylabel",$$parser[-1]); + if ($target eq 'web' || $target eq 'tex') { + $ylabel = &Apache::lonxml::get_all_text("/ylabel",$parser); + $ylabel = &Apache::run::evaluate($ylabel,$safeeval,$$parstack[-1]); + $ylabel =~ s/\n/ /g; + if (length($ylabel) > $max_str_len) { + $ylabel = substr($ylabel,0,$max_str_len); + } } elsif ($target eq 'edit') { $result .= &Apache::edit::tag_start($target,$token,'Plot Ylabel'); - my $text = &Apache::lonxml::get_all_text("/ylabel",$$parser[-1]); - $result .= ''. - &Apache::edit::editfield('',$text,'',20,1); + my $text = &Apache::lonxml::get_all_text("/ylabel",$parser); + $result .= &Apache::edit::end_row(). + &Apache::edit::start_spanning_row(). + &Apache::edit::editline('',$text,'',60); } elsif ($target eq 'modified') { - my $text=$$parser[-1]->get_text("/function"); + my $text=$$parser[-1]->get_text("/ylabel"); + $result.=&Apache::edit::rebuild_tag($token); $result.=&Apache::edit::modifiedfield($token); } return $result; @@ -426,7 +738,7 @@ sub start_ylabel { sub end_ylabel { my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; my $result = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'tex') { } elsif ($target eq 'edit') { $result.=&Apache::edit::tag_end($target,$token); } @@ -437,29 +749,27 @@ sub end_ylabel { sub start_label { my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; my $result=''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'tex') { my %label; &get_attributes(\%label,\%label_defaults,$parstack,$safeeval, $tagstack->[-1]); - $label{'text'} = &Apache::lonxml::get_all_text("/label",$$parser[-1]); - if (! &$words_test($label{'text'})) { - # I should probably warn about it, too. - $label{'text'} = 'Illegal text'; - } + my $text = &Apache::lonxml::get_all_text("/label",$parser); + $text = &Apache::run::evaluate($text,$safeeval,$$parstack[-1]); + $text =~ s/\n/ /g; + $text = substr($text,0,$max_str_len) if (length($text) > $max_str_len); + $label{'text'} = $text; push(@labels,\%label); } elsif ($target eq 'edit') { $result .= &Apache::edit::tag_start($target,$token,'Plot Label'); $result .= &edit_attributes($target,$token,\%label_defaults); - my $text = &Apache::lonxml::get_all_text("/label",$$parser[-1]); - $result .= ''. - &Apache::edit::editfield('',$text,'',20,1); + my $text = &Apache::lonxml::get_all_text("/label",$parser); + $result .= &Apache::edit::end_row(). + &Apache::edit::start_spanning_row(). + &Apache::edit::editline('',$text,'',60); } elsif ($target eq 'modified') { - my $constructtag=&Apache::edit::get_new_args + &Apache::edit::get_new_args ($token,$parstack,$safeeval,keys(%label_defaults)); - if ($constructtag) { - $result = &Apache::edit::rebuild_tag($token); - $result.= &Apache::edit::handle_insert(); - } + $result.=&Apache::edit::rebuild_tag($token); my $text=$$parser[-1]->get_text("/label"); $result.=&Apache::edit::modifiedfield($token); } @@ -469,7 +779,7 @@ sub start_label { sub end_label { my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; my $result = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'tex') { } elsif ($target eq 'edit') { $result.=&Apache::edit::tag_end($target,$token); } @@ -482,17 +792,19 @@ sub start_curve { my $result=''; &Apache::lonxml::register('Apache::lonplot',('function','data')); push (@Apache::lonxml::namespace,'curve'); - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'tex') { my %curve; &get_attributes(\%curve,\%curve_defaults,$parstack,$safeeval, $tagstack->[-1]); push (@curves,\%curve); } elsif ($target eq 'edit') { $result .= &Apache::edit::tag_start($target,$token,'Curve'); - $result .= &edit_attributes($target,$token,\%curve_defaults); + $result .= &help_win($curve_help_text); + $result .= &edit_attributes($target,$token,\%curve_defaults, + \@curve_edit_order); } elsif ($target eq 'modified') { my $constructtag=&Apache::edit::get_new_args - ($token,$parstack,$safeeval,keys(%label_defaults)); + ($token,$parstack,$safeeval,keys(%curve_defaults)); if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); $result.= &Apache::edit::handle_insert(); @@ -506,7 +818,7 @@ sub end_curve { my $result = ''; pop @Apache::lonxml::namespace; &Apache::lonxml::deregister('Apache::lonplot',('function','data')); - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'tex') { } elsif ($target eq 'edit') { $result.=&Apache::edit::tag_end($target,$token); } @@ -517,20 +829,26 @@ sub end_curve { sub start_function { my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; my $result=''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'tex') { if (exists($curves[-1]->{'data'})) { - &Apache::lonxml::warning('Use of precludes use of . The will be omitted in favor of the declaration.'); + &Apache::lonxml::warning + ('Use of the curve function tag precludes use of '. + ' the curve data tag. '. + 'The curve data tag will be omitted in favor of the '. + 'curve function declaration.'); delete $curves[-1]->{'data'} ; } - $curves[-1]->{'function'} = - &Apache::lonxml::get_all_text("/function",$$parser[-1]); + my $function = &Apache::lonxml::get_all_text("/function",$parser); + $function = &Apache::run::evaluate($function,$safeeval,$$parstack[-1]); + $curves[-1]->{'function'} = $function; } elsif ($target eq 'edit') { - $result .= &Apache::edit::tag_start($target,$token,'Curve Function'); - my $text = &Apache::lonxml::get_all_text("/function",$$parser[-1]); - $result .= ''. - &Apache::edit::editfield('',$text,'',20,1); + $result .= &Apache::edit::tag_start($target,$token,'Gnuplot compatible curve function'); + my $text = &Apache::lonxml::get_all_text("/function",$parser); + $result .= &Apache::edit::end_row(). + &Apache::edit::start_spanning_row(). + &Apache::edit::editline('',$text,'',60); } elsif ($target eq 'modified') { - # Why do I do this? + $result.=&Apache::edit::rebuild_tag($token); my $text=$$parser[-1]->get_text("/function"); $result.=&Apache::edit::modifiedfield($token); } @@ -540,7 +858,7 @@ sub start_function { sub end_function { my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; my $result = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'tex') { } elsif ($target eq 'edit') { $result .= &Apache::edit::end_table(); } @@ -551,20 +869,28 @@ sub end_function { sub start_data { my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; my $result=''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'tex') { if (exists($curves[-1]->{'function'})) { - &Apache::lonxml::warning('Use of precludes use of .'. - '. The will be omitted in favor of '. - 'the declaration.'); + &Apache::lonxml::warning + ('Use of the curve function tag precludes use of '. + ' the curve data tag. '. + 'The curve function tag will be omitted in favor of the '. + 'curve data declaration.'); delete($curves[-1]->{'function'}); } - my $datatext = &Apache::lonxml::get_all_text("/data",$$parser[-1]); - $datatext =~ s/\s+/ /g; + my $datatext = &Apache::lonxml::get_all_text("/data",$parser); + $datatext=&Apache::run::evaluate($datatext,$safeeval,$$parstack[-1]); + # Deal with cases where we're given an array... + if ($datatext =~ /^\@/) { + $datatext = &Apache::run::run('return "'.$datatext.'"', + $safeeval,1); + } + $datatext =~ s/\s+/ /g; # Need to do some error checking on the @data array - # make sure it's all numbers and make sure each array # is of the same length. my @data; - if ($datatext =~ /,/) { + if ($datatext =~ /,/) { # comma deliminated @data = split /,/,$datatext; } else { # Assume it's space seperated. @data = split / /,$datatext; @@ -573,25 +899,34 @@ sub start_data { # Check that it's non-empty if (! defined($data[$i])) { &Apache::lonxml::warning( - 'undefined value. Replacing with '. + 'undefined curve data value. Replacing with '. ' pi/e = 1.15572734979092'); $data[$i] = 1.15572734979092; } # Check that it's a number if (! &$real_test($data[$i]) & ! &$int_test($data[$i])) { &Apache::lonxml::warning( - 'Bad value of '.$data[$i].' Replacing with '. + 'Bad curve data value of '.$data[$i].' Replacing with '. ' pi/e = 1.15572734979092'); $data[$i] = 1.15572734979092; } } + # complain if the number of data points is not the same as + # in previous sets of data. + if (($curves[-1]->{'data'}) && ($#data != $#{@{$curves[-1]->{'data'}->[0]}})){ + &Apache::lonxml::warning + ('Number of data points is not consistent with previous '. + 'number of data points'); + } push @{$curves[-1]->{'data'}},\@data; } elsif ($target eq 'edit') { - $result .= &Apache::edit::tag_start($target,$token,'Curve Data'); - my $text = &Apache::lonxml::get_all_text("/data",$$parser[-1]); - $result .= ''. - &Apache::edit::editfield('',$text,'',20,1); + $result .= &Apache::edit::tag_start($target,$token,'Comma or space deliminated curve data'); + my $text = &Apache::lonxml::get_all_text("/data",$parser); + $result .= &Apache::edit::end_row(). + &Apache::edit::start_spanning_row(). + &Apache::edit::editline('',$text,'',60); } elsif ($target eq 'modified') { + $result.=&Apache::edit::rebuild_tag($token); my $text=$$parser[-1]->get_text("/data"); $result.=&Apache::edit::modifiedfield($token); } @@ -601,7 +936,7 @@ sub start_data { sub end_data { my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; my $result = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'tex') { } elsif ($target eq 'edit') { $result .= &Apache::edit::end_table(); } @@ -612,13 +947,19 @@ sub end_data { sub start_axis { my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; my $result=''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'tex') { &get_attributes(\%axis,\%axis_defaults,$parstack,$safeeval, $tagstack->[-1]); } elsif ($target eq 'edit') { $result .= &Apache::edit::tag_start($target,$token,'Plot Axes'); - $result .= &edit_attributes($target,$token,\%axis_defaults); + $result .= &edit_attributes($target,$token,\%axis_defaults, + \@axis_edit_order); } elsif ($target eq 'modified') { + my $constructtag=&Apache::edit::get_new_args + ($token,$parstack,$safeeval,keys(%axis_defaults)); + if ($constructtag) { + $result = &Apache::edit::rebuild_tag($token); + } } return $result; } @@ -626,16 +967,10 @@ sub start_axis { sub end_axis { my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; my $result = ''; - if ($target eq 'web') { + if ($target eq 'web' || $target eq 'tex') { } elsif ($target eq 'edit') { $result.=&Apache::edit::tag_end($target,$token); } elsif ($target eq 'modified') { - my $constructtag=&Apache::edit::get_new_args - ($token,$parstack,$safeeval,keys(%axis_defaults)); - if ($constructtag) { - $result = &Apache::edit::rebuild_tag($token); - $result.= &Apache::edit::handle_insert(); - } } return $result; } @@ -659,8 +994,13 @@ sub set_defaults { sub get_attributes{ my ($values,$defaults,$parstack,$safeeval,$tag) = @_; foreach my $attr (keys(%{$defaults})) { - $values->{$attr} = - &Apache::lonxml::get_param($attr,$parstack,$safeeval); + if ($attr eq 'texwidth' || $attr eq 'texfont') { + $values->{$attr} = + &Apache::lonxml::get_param($attr,$parstack,$safeeval,undef,1); + } else { + $values->{$attr} = + &Apache::lonxml::get_param($attr,$parstack,$safeeval); + } if ($values->{$attr} eq '' | !defined($values->{$attr})) { $values->{$attr} = $defaults->{$attr}->{'default'}; next; @@ -675,10 +1015,13 @@ sub get_attributes{ } return ; } + ##------------------------------------------------------- write_gnuplot_file sub write_gnuplot_file { + my ($tmpdir,$filename,$target)= @_; my $gnuplot_input = ''; my $curve; + my $pt = $plot{'texfont'}; # Collect all the colors my @Colors; push @Colors, $plot{'bgcolor'}; @@ -690,21 +1033,66 @@ sub write_gnuplot_file { $plot{'fgcolor'} ); } # set term - $gnuplot_input .= 'set term gif '; - $gnuplot_input .= 'transparent ' if ($plot{'transparent'} eq 'on'); - $gnuplot_input .= $plot{'font'} . ' '; - $gnuplot_input .= 'size '.$plot{'width'}.','.$plot{'height'}.' '; - $gnuplot_input .= "@Colors\n"; + if ($target eq 'web') { + $gnuplot_input .= 'set term gif '; + $gnuplot_input .= 'transparent ' if ($plot{'transparent'} eq 'on'); + $gnuplot_input .= $plot{'font'} . ' '; + $gnuplot_input .= 'size '.$plot{'width'}.','.$plot{'height'}.' '; + $gnuplot_input .= "@Colors\n"; + # set output + $gnuplot_input .= "set output\n"; + } elsif ($target eq 'tex') { + $gnuplot_input .= "set term postscript eps monochrome solid \"Helvetica\" $pt \n"; + $gnuplot_input .= "set output \"/home/httpd/perl/tmp/". + &Apache::lonnet::unescape($filename).".eps\"\n"; + } + # cartesian or polar? + if (lc($plot{'plottype'}) eq 'polar') { + $gnuplot_input .= 'set polar'.$/; + } else { + # Assume Cartesian + } # grid $gnuplot_input .= 'set grid'.$/ if ($plot{'grid'} eq 'on'); # border $gnuplot_input .= ($plot{'border'} eq 'on'? 'set border'.$/ : - 'set noborder'.$/ ); # title, xlabel, ylabel - $gnuplot_input .= "set output\n"; - $gnuplot_input .= "set title \"$title\"\n" if (defined($title)) ; - $gnuplot_input .= "set xlabel \"$xlabel\"\n" if (defined($xlabel)); - $gnuplot_input .= "set ylabel \"$ylabel\"\n" if (defined($ylabel)); + 'set noborder'.$/ ); + # sampling rate for non-data curves + $gnuplot_input .= "set samples $plot{'samples'}\n"; + # title, xlabel, ylabel + # titles + if ($target eq 'tex') { + $gnuplot_input .= "set title \"$title\" font \"Helvetica,".$pt."pt\"\n" if (defined($title)) ; + $gnuplot_input .= "set xlabel \"$xlabel\" font \"Helvetica,".$pt."pt\" \n" if (defined($xlabel)); + $gnuplot_input .= "set ylabel \"$ylabel\" font \"Helvetica,".$pt."pt\"\n" if (defined($ylabel)); + } else { + $gnuplot_input .= "set title \"$title\" \n" if (defined($title)) ; + $gnuplot_input .= "set xlabel \"$xlabel\" \n" if (defined($xlabel)); + $gnuplot_input .= "set ylabel \"$ylabel\" \n" if (defined($ylabel)); + } + # tics + if (%xtics) { + $gnuplot_input .= "set xtics $xtics{'location'} "; + $gnuplot_input .= ( $xtics{'mirror'} eq 'on'?"mirror ":"nomirror "); + $gnuplot_input .= "$xtics{'start'}, "; + $gnuplot_input .= "$xtics{'increment'}, "; + $gnuplot_input .= "$xtics{'end'}\n"; + if ($xtics{'minorfreq'} != 0) { + $gnuplot_input .= "set mxtics ".$xtics{'minorfreq'}."\n"; + } + } + if (%ytics) { + $gnuplot_input .= "set ytics $ytics{'location'} "; + $gnuplot_input .= ( $ytics{'mirror'} eq 'on'?"mirror ":"nomirror "); + $gnuplot_input .= "$ytics{'start'}, "; + $gnuplot_input .= "$ytics{'increment'}, "; + $gnuplot_input .= "$ytics{'end'}\n"; + if ($ytics{'minorfreq'} != 0) { + $gnuplot_input .= "set mytics ".$ytics{'minorfreq'}."\n"; + } + } + # axis if (%axis) { $gnuplot_input .= "set xrange \[$axis{'xmin'}:$axis{'xmax'}\]\n"; $gnuplot_input .= "set yrange \[$axis{'ymin'}:$axis{'ymax'}\]\n"; @@ -723,11 +1111,14 @@ sub write_gnuplot_file { my $label; foreach $label (@labels) { $gnuplot_input .= 'set label "'.$label->{'text'}.'" at '. - $label->{'xpos'}.','.$label->{'ypos'}.' '.$label->{'justify'}.$/ ; + $label->{'xpos'}.','.$label->{'ypos'}.' '.$label->{'justify'}.' font "Helvetica,'.$pt.'pt"'.$/ ; } + if ($target eq 'tex') { + $gnuplot_input .="set size 1,".$plot{'height'}/$plot{'width'}*1.38; + $gnuplot_input .="\n"; + } # curves $gnuplot_input .= 'plot '; - my $datatext = ''; for (my $i = 0;$i<=$#curves;$i++) { $curve = $curves[$i]; $gnuplot_input.= ', ' if ($i > 0); @@ -735,11 +1126,24 @@ sub write_gnuplot_file { $gnuplot_input.= $curve->{'function'}.' title "'. $curve->{'name'}.'" with '. - $curve->{'linestyle'}; + $curve->{'linestyle'}; + $gnuplot_input.= ' linewidth 4 ' if ($target eq 'tex'); + if (($curve->{'linestyle'} eq 'points') || + ($curve->{'linestyle'} eq 'linespoints') || + ($curve->{'linestyle'} eq 'errorbars') || + ($curve->{'linestyle'} eq 'xerrorbars') || + ($curve->{'linestyle'} eq 'yerrorbars') || + ($curve->{'linestyle'} eq 'xyerrorbars')) { + $gnuplot_input.=' pointtype '.$curve->{'pointtype'}; + $gnuplot_input.=' pointsize '.$curve->{'pointsize'}; + } } elsif (exists($curve->{'data'})) { - $gnuplot_input.= '\'-\' title "'. - $curve->{'name'}.'" with '. - $curve->{'linestyle'}; + # Store data values in $datatext + my $datatext = ''; + # get new filename + my $datafilename = "$tmpdir/$filename.data.$i"; + my $fh=Apache::File->new(">$datafilename"); + # Compile data my @Data = @{$curve->{'data'}}; my @Data0 = @{$Data[0]}; for (my $i =0; $i<=$#Data0; $i++) { @@ -749,20 +1153,40 @@ sub write_gnuplot_file { } $datatext .= $/; } - $datatext .=$/; + # write file + print $fh $datatext; + close ($fh); + # generate gnuplot text + $gnuplot_input.= '"'.$datafilename.'" title "'. + $curve->{'name'}.'" with '. + $curve->{'linestyle'}; + $gnuplot_input.= ' linewidth 4 ' if ($target eq 'tex'); + if (($curve->{'linestyle'} eq 'points') || + ($curve->{'linestyle'} eq 'linespoints') || + ($curve->{'linestyle'} eq 'errorbars') || + ($curve->{'linestyle'} eq 'xerrorbars') || + ($curve->{'linestyle'} eq 'yerrorbars') || + ($curve->{'linestyle'} eq 'xyerrorbars')) { + $gnuplot_input.=' pointtype '.$curve->{'pointtype'}; + $gnuplot_input.=' pointsize '.$curve->{'pointsize'}; + } } } - $gnuplot_input .= $/.$datatext; - return $gnuplot_input; + # Write the output to a file. + my $fh=Apache::File->new(">$tmpdir$filename.data"); + print $fh $gnuplot_input; + close($fh); + # That's all folks. + return ; } #---------------------------------------------- check_inputs sub check_inputs { ## Note: no inputs, no outputs - this acts only on global variables. ## Make sure we have all the input we need: - if (! %plot) { &set_defaults(\%plot,\%plot_defaults); } + if (! %plot) { &set_defaults(\%plot,\%gnuplot_defaults); } if (! %key ) {} # No key for this plot, thats okay - if (! %axis) { &set_defaults(\%axis,\%axis_defaults); } +# if (! %axis) { &set_defaults(\%axis,\%axis_defaults); } if (! defined($title )) {} # No title for this plot, thats okay if (! defined($xlabel)) {} # No xlabel for this plot, thats okay if (! defined($ylabel)) {} # No ylabel for this plot, thats okay @@ -774,7 +1198,7 @@ sub check_inputs { my $curve; foreach $curve (@curves) { if (!defined($curve->{'function'})&&!defined($curve->{'data'})){ - &Apache::lonxml::warning("One of the curves specified did not contain any or declarations\n"); + &Apache::lonxml::warning("One of the curves specified did not contain any curve data or curve function declarations\n"); return ''; } } @@ -782,20 +1206,27 @@ sub check_inputs { #------------------------------------------------ make_edit sub edit_attributes { - my ($target,$token,$defaults) = @_; - my $result; - foreach my $attr (sort keys(%$defaults)) { + my ($target,$token,$defaults,$keys) = @_; + my ($result,@keys); + if ($keys && ref($keys) eq 'ARRAY') { + @keys = @$keys; + } else { + @keys = sort(keys(%$defaults)); + } + foreach my $attr (@keys) { + # append a ' ' to the description if it doesn't have one already. + my $description = $defaults->{$attr}->{'description'}; + $description .= ' ' if ($description !~ / $/); if ($defaults->{$attr}->{'edit_type'} eq 'entry') { - $result .= &Apache::edit::text_arg( - $defaults->{$attr}->{'description'}, - $attr, - $token); + $result .= &Apache::edit::text_arg + ($description,$attr,$token, + $defaults->{$attr}->{'size'}); } elsif ($defaults->{$attr}->{'edit_type'} eq 'choice') { - $result .= &Apache::edit::select_arg( - $defaults->{$attr}->{'description'}, - $attr, - $defaults->{$attr}->{'choices'}, - $token); + $result .= &Apache::edit::select_arg + ($description,$attr,$defaults->{$attr}->{'choices'},$token); + } elsif ($defaults->{$attr}->{'edit_type'} eq 'onoff') { + $result .= &Apache::edit::select_arg + ($description,$attr,['on','off'],$token); } $result .= '
'; } @@ -809,91 +1240,144 @@ sub edit_attributes { ## ## ################################################################### -#------------------------------------------------ insert_xxxxxxx -sub insert_plot { - my $result; +sub insert_gnuplot { + my $result = ''; # plot attributes - $result .= '{'default'}\""; + } + $result .= ">"; + # Add the components (most are commented out for simplicity) + # $result .= &insert_key(); + # $result .= &insert_axis(); + # $result .= &insert_title(); + # $result .= &insert_xlabel(); + # $result .= &insert_ylabel(); $result .= &insert_curve(); - $result .= &insert_data(); - $result .= "\n"; - # close up the - $result .= "\n"; + # close up the + $result .= "\n"; + return $result; +} + +sub insert_tics { + my $result; + $result .= &insert_xtics() . &insert_ytics; + return $result; +} + +sub insert_xtics { + my $result; + $result .= "\n {'default'}\" "; + } + $result .= "/>"; + return $result; +} + +sub insert_ytics { + my $result; + $result .= "\n {'default'}\" "; + } + $result .= "/>"; return $result; } sub insert_key { my $result; - $result .= ' {'default'}\""; } - $result .= " />\n"; + $result .= " />"; return $result; } sub insert_axis{ my $result; - $result .= ' {'default'}\""; } - $result .= " />\n"; + $result .= " />"; return $result; } -sub insert_title { return " \n"; } -sub insert_title { return " \n"; } -sub insert_title { return " \n"; } +sub insert_title { return "\n "; } +sub insert_xlabel { return "\n "; } +sub insert_ylabel { return "\n "; } sub insert_label { my $result; - $result .= ' \n"; + $result .= ">"; return $result; } sub insert_curve { my $result; - $result .= ' {'default'}."\""; } - $result .= " >\n"; + $result .= " >"; + $result .= &insert_data().&insert_data()."\n "; } sub insert_function { my $result; - $result .= "\n"; + $result .= "\n "; return $result; } sub insert_data { my $result; - $result .= " \n"; - $result .= " \n"; + $result .= "\n "; + return $result; +} + +##---------------------------------------------------------------------- +# Javascript functions to display help for tags + +sub make_javascript { + my $helpwindowwidth = 400; + my $helpwindowheight = 400; + my $result = ''; + $result.=<<"ENDFUNCTION"; + +ENDFUNCTION return $result; } +sub help_win { + my ($helptext)=@_; + $helptext =~ s/\n/ /g; + $helptext =~ s/\'/\\\'/g; + my $result = ''; + $result.=<<"ENDWIN"; +
+help +
+ENDWIN + return $result; +} ##---------------------------------------------------------------------- 1; __END__