--- loncom/xml/lonplot.pm 2004/05/26 19:44:20 1.96 +++ loncom/xml/lonplot.pm 2005/07/05 15:05:13 1.111 @@ -1,7 +1,7 @@ # The LearningOnline Network with CAPA # Dynamic plot # -# $Id: lonplot.pm,v 1.96 2004/05/26 19:44:20 matthew Exp $ +# $Id: lonplot.pm,v 1.111 2005/07/05 15:05:13 albertel Exp $ # # Copyright Michigan State University Board of Trustees # @@ -35,11 +35,25 @@ use Apache::File; use Apache::response; use Apache::lonxml; use Apache::edit; +use Apache::lonnet; + +use vars qw/$weboutputformat $versionstring/; + + BEGIN { - &Apache::lonxml::register('Apache::lonplot',('gnuplot')); + &Apache::lonxml::register('Apache::lonplot',('gnuplot')); + # + # Determine the version of GNUPLOT + $weboutputformat = 'gif'; + $versionstring = `gnuplot --version 2>/dev/null`; + if ($versionstring =~ /^gnuplot 4/) { + $weboutputformat = 'png'; + } + } + ## ## Description of data structures: ## @@ -88,6 +102,7 @@ my %linestyles = yerrorbars => [3,4], xyerrorbars => [4,6], boxes => 3, + filledcurves => 2, vector => 4 ); @@ -110,7 +125,11 @@ my $words_test = sub {$_[0]=~s/\s+/ ################################################################### my @gnuplot_edit_order = qw/alttag bgcolor fgcolor height width font transparent grid samples - border align texwidth texfont plottype/; + border align texwidth texfont plotcolor plottype lmargin rmargin tmargin + bmargin major_ticscale minor_ticscale boxwidth gridlayer fillstyle + pattern solid/; + +my $margin_choices = ['default',0..20]; my %gnuplot_defaults = ( @@ -161,6 +180,19 @@ my %gnuplot_defaults = description => 'Display grid', edit_type => 'onoff' }, + gridlayer => { + default => 'off', + test => $onoff_test, + description => 'Display grid front layer over filled boxes or filled curves', + edit_type => 'onoff' + }, + box_border => { + default => 'noborder', + test => sub {$_[0]=~/^(noborder|border)$/}, + description => 'Draw border for boxes', + edit_type => 'choice', + choices => ['border','noborder'] + }, border => { default => 'on', test => $onoff_test, @@ -174,7 +206,7 @@ my %gnuplot_defaults = edit_type => 'choice', choices => ['small','medium','large'] }, - samples => { + samples => { default => '100', test => $int_test, description => 'Number of samples for non-data plots', @@ -195,20 +227,97 @@ my %gnuplot_defaults = edit_type => 'entry', size => '5' }, - texfont => { + texfont => { default => '22', test => $int_test, description => 'Font size to use in TeX output (pts):', edit_type => 'choice', choices => [qw/8 10 12 14 16 18 20 22 24 26 28 30 32 34 36/], }, - plottype => { + plotcolor => { + default => 'monochrome', + test => sub {$_[0]=~/^(monochrome|color|colour)$/}, + description => 'Color setting for printing:', + edit_type => 'choice', + choices => [qw/monochrome color colour/], + }, + pattern => { + default => '', + test => $int_test, + description => 'pattern value for boxes:', + edit_type => 'choice', + choices => [0,1,2,3,4,5,6] + }, + solid => { + default => 0, + test => $real_test, + description => 'The density of fill style for boxes', + edit_type => 'entry', + size => '5' + }, + fillstyle => { + default => 'empty', + test => sub {$_[0]=~/^(empty|solid|pattern)$/}, + description => 'Filled style for boxes:', + edit_type => 'choice', + choices => ['empty','solid','pattern'] + }, + plottype => { default => 'Cartesian', test => sub {$_[0]=~/^(Polar|Cartesian)$/}, description => 'Plot type:', edit_type => 'choice', choices => ['Cartesian','Polar'] }, + lmargin => { + default => 'default', + test => sub {$_[0]=~/^(default|\d+)$/}, + description => 'Left margin width (pts):', + edit_type => 'choice', + choices => $margin_choices, + }, + rmargin => { + default => 'default', + test => sub {$_[0]=~/^(default|\d+)$/}, + description => 'Right margin width (pts):', + edit_type => 'choice', + choices => $margin_choices, + }, + tmargin => { + default => 'default', + test => sub {$_[0]=~/^(default|\d+)$/}, + description => 'Top margin width (pts):', + edit_type => 'choice', + choices => $margin_choices, + }, + bmargin => { + default => 'default', + test => sub {$_[0]=~/^(default|\d+)$/}, + description => 'Bottom margin width (pts):', + edit_type => 'choice', + choices => $margin_choices, + }, + boxwidth => { + default => '', + test => $real_test, + description => 'width of boxes default auto', + edit_type => 'entry', + size => '5' + }, + major_ticscale => { + default => '1', + test => $real_test, + description => 'Size of major tic marks (plot coordinates)', + edit_type => 'entry', + size => '5' + }, + minor_ticscale => { + default => '0.5', + test => $real_test, + description => 'Size of minor tic mark (plot coordinates)', + edit_type => 'entry', + size => '5' + }, ); my %key_defaults = @@ -302,7 +411,7 @@ my %tic_defaults = minorfreq => { default => '0', test => $int_test, - description => 'Number of minor tics between major tic marks', + description => 'Number of minor tics per major tic mark', edit_type => 'entry', size => '10' }, @@ -348,7 +457,7 @@ my %axis_defaults = } ); -my @curve_edit_order = ('color','name','linestyle','pointtype','pointsize'); +my @curve_edit_order = ('color','name','linestyle','pointtype','pointsize','limit'); my %curve_defaults = ( @@ -394,7 +503,14 @@ my %curve_defaults = description => 'point type (may not apply to all line styles)', edit_type => 'choice', choices => [0,1,2,3,4,5,6] - } + }, + limit => { + default => 'closed', + test => sub {$_[0]=~/^(closed|x1|x2|y1|y2)$/}, + description => 'point to fill -- for filledcurves', + edit_type => 'choice', + choices => ['closed','x1','x2','y1','y2'] + }, ); ################################################################### @@ -402,10 +518,12 @@ my %curve_defaults = ## parsing and edit rendering ## ## ## ################################################################### -my (%plot,%key,%axis,$title,$xlabel,$ylabel,@labels,@curves,%xtics,%ytics); + +undef %Apache::lonplot::plot; +my (%key,%axis,$title,$xlabel,$ylabel,@labels,@curves,%xtics,%ytics); sub start_gnuplot { - undef(%plot); undef(%key); undef(%axis); + undef(%Apache::lonplot::plot); undef(%key); undef(%axis); undef($title); undef($xlabel); undef($ylabel); undef(@labels); undef(@curves); undef(%xtics); undef(%ytics); @@ -417,7 +535,7 @@ sub start_gnuplot { 'xtics','ytics')); push (@Apache::lonxml::namespace,'lonplot'); if ($target eq 'web' || $target eq 'tex') { - &get_attributes(\%plot,\%gnuplot_defaults,$parstack,$safeeval, + &get_attributes(\%Apache::lonplot::plot,\%gnuplot_defaults,$parstack,$safeeval, $tagstack->[-1]); } elsif ($target eq 'edit') { $result .= &Apache::edit::tag_start($target,$token,'GnuPlot'); @@ -452,7 +570,7 @@ sub end_gnuplot { ## ## Determine filename my $tmpdir = '/home/httpd/perl/tmp/'; - my $filename = $ENV{'user.name'}.'_'.$ENV{'user.domain'}. + my $filename = $env{'user.name'}.'_'.$env{'user.domain'}. '_'.time.'_'.$$.$randnumber.'_plot'; ## Write the plot description to the file &write_gnuplot_file($tmpdir,$filename,$target); @@ -460,16 +578,20 @@ sub end_gnuplot { ## return image tag for the plot if ($target eq 'web') { $result .= <<"ENDIMAGE"; -$plot{'alttag'} +$Apache::lonplot::plot{'alttag'} ENDIMAGE } elsif ($target eq 'tex') { + &Apache::lonxml::debug(" gnuplot wid = $Apache::lonplot::plot{'width'}"); + &Apache::lonxml::debug(" gnuplot ht = $Apache::lonplot::plot{'height'}"); #might be inside the safe space, register the URL for later &Apache::lonxml::register_ssi("/cgi-bin/plot.gif?file=$filename.data&output=eps"); - $result = '\graphicspath{{/home/httpd/perl/tmp/}}\includegraphics[width='.$plot{'texwidth'}.' mm]{'.&Apache::lonnet::unescape($filename).'.eps}'; + $result = "%DYNAMICIMAGE:$Apache::lonplot::plot{'width'}:$Apache::lonplot::plot{'height'}:$Apache::lonplot::plot{'texwidth'}\n"; + $result .= '\graphicspath{{/home/httpd/perl/tmp/}}'."\n"; + $result .= '\includegraphics[width='.$Apache::lonplot::plot{'texwidth'}.' mm]{'.&Apache::lonnet::unescape($filename).'.eps}'; } } elsif ($target eq 'edit') { $result.=&Apache::edit::tag_end($target,$token); @@ -944,45 +1066,95 @@ sub write_gnuplot_file { my ($tmpdir,$filename,$target)= @_; my $gnuplot_input = ''; my $curve; - my $pt = $plot{'texfont'}; + my $pt = $Apache::lonplot::plot{'texfont'}; + # + # Check to be sure we do not have any empty curves + my @curvescopy; + foreach my $curve (@curves) { + if (exists($curve->{'function'})) { + if ($curve->{'function'} !~ /^\s*$/) { + push(@curvescopy,$curve); + } + } elsif (exists($curve->{'data'})) { + foreach my $data (@{$curve->{'data'}}) { + if (scalar(@$data) > 0) { + push(@curvescopy,$curve); + last; + } + } + } + } + @curves = @curvescopy; # Collect all the colors my @Colors; - push @Colors, $plot{'bgcolor'}; - push @Colors, $plot{'fgcolor'}; - push @Colors, (defined($axis{'color'})?$axis{'color'}:$plot{'fgcolor'}); + push @Colors, $Apache::lonplot::plot{'bgcolor'}; + push @Colors, $Apache::lonplot::plot{'fgcolor'}; + push @Colors, (defined($axis{'color'})?$axis{'color'}:$Apache::lonplot::plot{'fgcolor'}); foreach $curve (@curves) { push @Colors, ($curve->{'color'} ne '' ? $curve->{'color'} : - $plot{'fgcolor'} ); + $Apache::lonplot::plot{'fgcolor'} ); } # set term if ($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'}.' '; + $gnuplot_input .= 'set term '.$weboutputformat .' '; + $gnuplot_input .= 'transparent ' if ($Apache::lonplot::plot{'transparent'} eq 'on'); + $gnuplot_input .= $Apache::lonplot::plot{'font'} . ' '; + $gnuplot_input .= 'size '.$Apache::lonplot::plot{'width'}.','.$Apache::lonplot::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 term postscript eps $Apache::lonplot::plot{'plotcolor'} solid \"Helvetica\" $pt \n"; $gnuplot_input .= "set output \"/home/httpd/perl/tmp/". &Apache::lonnet::unescape($filename).".eps\"\n"; } # cartesian or polar? - if (lc($plot{'plottype'}) eq 'polar') { + if (lc($Apache::lonplot::plot{'plottype'}) eq 'polar') { $gnuplot_input .= 'set polar'.$/; } else { # Assume Cartesian } + # solid or pattern for boxes? + if (lc($Apache::lonplot::plot{'fillstyle'}) eq 'solid') { + $gnuplot_input .= 'set style fill solid '. + $Apache::lonplot::plot{'solid'}.$Apache::lonplot::plot{'box_border'}.$/; + } elsif (lc($Apache::lonplot::plot{'fillstyle'}) eq 'pattern') { + $gnuplot_input .= 'set style fill pattern '.$Apache::lonplot::plot{'pattern'}.$Apache::lonplot::plot{'box_border'}.$/; + } elsif (lc($Apache::lonplot::plot{'fillstyle'}) eq 'empty') { + } + # margin + if (lc($Apache::lonplot::plot{'lmargin'}) ne 'default') { + $gnuplot_input .= 'set lmargin '.$Apache::lonplot::plot{'lmargin'}.$/; + } + if (lc($Apache::lonplot::plot{'rmargin'}) ne 'default') { + $gnuplot_input .= 'set rmargin '.$Apache::lonplot::plot{'rmargin'}.$/; + } + if (lc($Apache::lonplot::plot{'tmargin'}) ne 'default') { + $gnuplot_input .= 'set tmargin '.$Apache::lonplot::plot{'tmargin'}.$/; + } + if (lc($Apache::lonplot::plot{'bmargin'}) ne 'default') { + $gnuplot_input .= 'set bmargin '.$Apache::lonplot::plot{'bmargin'}.$/; + } + # tic scales + $gnuplot_input .= 'set ticscale '. + $Apache::lonplot::plot{'major_ticscale'}.' '.$Apache::lonplot::plot{'minor_ticscale'}.$/; + #boxwidth + if (lc($Apache::lonplot::plot{'boxwidth'}) ne '') { + $gnuplot_input .= 'set boxwidth '.$Apache::lonplot::plot{'boxwidth'}.$/; + } + # gridlayer + $gnuplot_input .= 'set grid noxtics noytics front '.$/ + if ($Apache::lonplot::plot{'gridlayer'} eq 'on'); + # grid - $gnuplot_input .= 'set grid'.$/ if ($plot{'grid'} eq 'on'); + $gnuplot_input .= 'set grid'.$/ if ($Apache::lonplot::plot{'grid'} eq 'on'); # border - $gnuplot_input .= ($plot{'border'} eq 'on'? + $gnuplot_input .= ($Apache::lonplot::plot{'border'} eq 'on'? 'set border'.$/ : 'set noborder'.$/ ); # sampling rate for non-data curves - $gnuplot_input .= "set samples $plot{'samples'}\n"; + $gnuplot_input .= "set samples $Apache::lonplot::plot{'samples'}\n"; # title, xlabel, ylabel # titles if ($target eq 'tex') { @@ -1034,10 +1206,14 @@ sub write_gnuplot_file { my $label; foreach $label (@labels) { $gnuplot_input .= 'set label "'.$label->{'text'}.'" at '. - $label->{'xpos'}.','.$label->{'ypos'}.' '.$label->{'justify'}.' font "Helvetica,'.$pt.'pt"'.$/ ; + $label->{'xpos'}.','.$label->{'ypos'}.' '.$label->{'justify'}; + if ($target eq 'tex') { + $gnuplot_input .=' font "Helvetica,'.$pt.'pt"' ; + } + $gnuplot_input .= $/; } if ($target eq 'tex') { - $gnuplot_input .="set size 1,".$plot{'height'}/$plot{'width'}*1.38; + $gnuplot_input .="set size 1,".$Apache::lonplot::plot{'height'}/$Apache::lonplot::plot{'width'}*1.38; $gnuplot_input .="\n"; } # curves @@ -1059,6 +1235,8 @@ sub write_gnuplot_file { ($curve->{'linestyle'} eq 'xyerrorbars')) { $gnuplot_input.=' pointtype '.$curve->{'pointtype'}; $gnuplot_input.=' pointsize '.$curve->{'pointsize'}; + } elsif ($curve->{'linestyle'} eq 'filledcurves') { + $gnuplot_input.= ' '.$curve->{'limit'}; } } elsif (exists($curve->{'data'})) { # Store data values in $datatext @@ -1092,6 +1270,8 @@ sub write_gnuplot_file { ($curve->{'linestyle'} eq 'xyerrorbars')) { $gnuplot_input.=' pointtype '.$curve->{'pointtype'}; $gnuplot_input.=' pointsize '.$curve->{'pointsize'}; + } elsif ($curve->{'linestyle'} eq 'filledcurves') { + $gnuplot_input.= ' '.$curve->{'limit'}; } } } @@ -1107,7 +1287,7 @@ sub write_gnuplot_file { 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,\%gnuplot_defaults); } + if (! %Apache::lonplot::plot) { &set_defaults(\%Apache::lonplot::plot,\%gnuplot_defaults); } if (! %key ) {} # No key for this plot, thats okay # if (! %axis) { &set_defaults(\%axis,\%axis_defaults); } if (! defined($title )) {} # No title for this plot, thats okay @@ -1145,10 +1325,10 @@ sub edit_attributes { ($description,$attr,$token, $defaults->{$attr}->{'size'}); } elsif ($defaults->{$attr}->{'edit_type'} eq 'choice') { - $result .= &Apache::edit::select_arg + $result .= &Apache::edit::select_or_text_arg ($description,$attr,$defaults->{$attr}->{'choices'},$token); } elsif ($defaults->{$attr}->{'edit_type'} eq 'onoff') { - $result .= &Apache::edit::select_arg + $result .= &Apache::edit::select_or_text_arg ($description,$attr,['on','off'],$token); } $result .= '
';