--- loncom/xml/lonplot.pm 2002/04/25 21:33:52 1.73
+++ loncom/xml/lonplot.pm 2003/09/19 20:05:29 1.90
@@ -1,7 +1,7 @@
# The LearningOnline Network with CAPA
# Dynamic plot
#
-# $Id: lonplot.pm,v 1.73 2002/04/25 21:33:52 sakharuk Exp $
+# $Id: lonplot.pm,v 1.90 2003/09/19 20:05:29 matthew Exp $
#
# Copyright Michigan State University Board of Trustees
#
@@ -34,6 +34,8 @@
package Apache::lonplot;
use strict;
+use warnings FATAL=>'all';
+no warnings 'uninitialized';
use Apache::File;
use Apache::response;
use Apache::lonxml;
@@ -99,7 +101,7 @@ my $real_test =
sub {$_[0]=~s/\s+//g;$_[0]=~/^[+-]?\d*\.?\d*([eE][+-]\d+)?$/};
my $pos_real_test =
sub {$_[0]=~s/\s+//g;$_[0]=~/^[+]?\d*\.?\d*([eE][+-]\d+)?$/};
-my $color_test = sub {$_[0]=~s/\s+//g;$_[0]=~/^x[\da-f]{6}$/};
+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)$/};
@@ -112,7 +114,8 @@ my $words_test = sub {$_[0]=~s/\s+/
## ##
###################################################################
my @gnuplot_edit_order =
- qw/alttag bgcolor fgcolor height width font transparent grid border align/;
+ qw/alttag bgcolor fgcolor height width font transparent grid samples
+ border align texwidth plottype/;
my $gnuplot_help_text = <<"ENDPLOTHELP";
<p>
@@ -208,13 +211,34 @@ my %gnuplot_defaults =
edit_type => 'choice',
choices => ['small','medium','large']
},
+ samples => {
+ default => '100',
+ test => $int_test,
+ description => 'Number of samples for non-data plots',
+ edit_type => 'choice',
+ choices => ['100','200','500','1000','2000','5000']
+ },
align => {
default => 'center',
test => sub {$_[0]=~/^(left|right|center)$/},
description => 'alignment for image in html',
edit_type => 'choice',
choices => ['left','right','center']
- }
+ },
+ texwidth => {
+ default => '93',
+ test => $int_test,
+ description => 'Width of plot when printed (mm)',
+ edit_type => 'entry',
+ size => '5'
+ },
+ plottype => {
+ default => 'Cartesian',
+ test => sub {$_[0]=~/^(Polar|Cartesian)$/},
+ description => 'Plot type:',
+ edit_type => 'choice',
+ choices => ['Polar','Cartesian']
+ },
);
my %key_defaults =
@@ -267,43 +291,51 @@ my %label_defaults =
}
);
-my @tic_edit_order = ('location','mirror','start','increment','end');
+my @tic_edit_order = ('location','mirror','start','increment','end',
+ 'minorfreq');
my %tic_defaults =
(
location => {
default => 'border',
test => sub {$_[0]=~/^(border|axis)$/},
- description => 'Location of tick marks',
+ description => 'Location of major tic marks',
edit_type => 'choice',
choices => ['border','axis']
},
mirror => {
default => 'on',
test => $onoff_test,
- description => 'mirror ticks on opposite axis?',
+ description => 'mirror tics on opposite axis?',
edit_type => 'onoff'
},
start => {
default => '-10.0',
test => $real_test,
- description => 'Start ticks at',
+ description => 'Start major tics at',
edit_type => 'entry',
size => '10'
},
increment => {
default => '1.0',
test => $real_test,
- description => 'Place a tick every',
+ description => 'Place a major tic every',
edit_type => 'entry',
size => '10'
},
end => {
default => ' 10.0',
test => $real_test,
- description => 'Stop ticks at ',
+ 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');
@@ -312,7 +344,7 @@ my %axis_defaults =
color => {
default => 'x000000',
test => $color_test,
- description => 'color of axes (x000000)',
+ description => 'color of grid lines (x000000)',
edit_type => 'entry',
size => '10'
},
@@ -434,10 +466,10 @@ my %curve_defaults =
my (%plot,%key,%axis,$title,$xlabel,$ylabel,@labels,@curves,%xtics,%ytics);
sub start_gnuplot {
- %plot = (); %key = (); %axis = ();
- $title = undef; $xlabel = undef; $ylabel = undef;
- $#labels = -1; $#curves = -1;
- %xtics = (); %ytics = ();
+ undef(%plot); undef(%key); undef(%axis);
+ undef($title); undef($xlabel); undef($ylabel);
+ undef(@labels); undef(@curves);
+ undef(%xtics); undef(%ytics);
#
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my $result='';
@@ -499,7 +531,8 @@ sub end_gnuplot {
ENDIMAGE
} elsif ($target eq 'tex') {
&Apache::lonnet::ssi("/cgi-bin/plot.gif?file=$filename.data&output=eps");
- $result = '\graphicspath{{/home/httpd/perl/tmp/}}\fbox{\includegraphics{'.&Apache::lonnet::unescape($filename).'.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,$token);
@@ -606,7 +639,7 @@ sub start_title {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my $result='';
if ($target eq 'web' || $target eq 'tex') {
- $title = &Apache::lonxml::get_all_text("/title",$$parser[-1]);
+ $title = &Apache::lonxml::get_all_text("/title",$parser);
$title=&Apache::run::evaluate($title,$safeeval,$$parstack[-1]);
$title =~ s/\n/ /g;
if (length($title) > $max_str_len) {
@@ -614,7 +647,7 @@ sub start_title {
}
} elsif ($target eq 'edit') {
$result.=&Apache::edit::tag_start($target,$token,'Plot Title');
- my $text=&Apache::lonxml::get_all_text("/title",$$parser[-1]);
+ my $text=&Apache::lonxml::get_all_text("/title",$parser);
$result.=&Apache::edit::end_row().
&Apache::edit::start_spanning_row().
&Apache::edit::editline('',$text,'',60);
@@ -640,7 +673,7 @@ sub start_xlabel {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my $result='';
if ($target eq 'web' || $target eq 'tex') {
- $xlabel = &Apache::lonxml::get_all_text("/xlabel",$$parser[-1]);
+ $xlabel = &Apache::lonxml::get_all_text("/xlabel",$parser);
$xlabel=&Apache::run::evaluate($xlabel,$safeeval,$$parstack[-1]);
$xlabel =~ s/\n/ /g;
if (length($xlabel) > $max_str_len) {
@@ -648,7 +681,7 @@ sub start_xlabel {
}
} elsif ($target eq 'edit') {
$result.=&Apache::edit::tag_start($target,$token,'Plot Xlabel');
- my $text=&Apache::lonxml::get_all_text("/xlabel",$$parser[-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);
@@ -675,7 +708,7 @@ sub start_ylabel {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my $result='';
if ($target eq 'web' || $target eq 'tex') {
- $ylabel = &Apache::lonxml::get_all_text("/ylabel",$$parser[-1]);
+ $ylabel = &Apache::lonxml::get_all_text("/ylabel",$parser);
$ylabel = &Apache::run::evaluate($ylabel,$safeeval,$$parstack[-1]);
$ylabel =~ s/\n/ /g;
if (length($ylabel) > $max_str_len) {
@@ -683,7 +716,7 @@ sub start_ylabel {
}
} elsif ($target eq 'edit') {
$result .= &Apache::edit::tag_start($target,$token,'Plot Ylabel');
- my $text = &Apache::lonxml::get_all_text("/ylabel",$$parser[-1]);
+ my $text = &Apache::lonxml::get_all_text("/ylabel",$parser);
$result .= &Apache::edit::end_row().
&Apache::edit::start_spanning_row().
&Apache::edit::editline('',$text,'',60);
@@ -713,7 +746,7 @@ sub start_label {
my %label;
&get_attributes(\%label,\%label_defaults,$parstack,$safeeval,
$tagstack->[-1]);
- my $text = &Apache::lonxml::get_all_text("/label",$$parser[-1]);
+ my $text = &Apache::lonxml::get_all_text("/label",$parser);
$text = &Apache::run::evaluate($text,$safeeval,$$parstack[-1]);
$text =~ s/\n/ /g;
$text = substr($text,0,$max_str_len) if (length($text) > $max_str_len);
@@ -722,7 +755,7 @@ sub start_label {
} elsif ($target eq 'edit') {
$result .= &Apache::edit::tag_start($target,$token,'Plot Label');
$result .= &edit_attributes($target,$token,\%label_defaults);
- my $text = &Apache::lonxml::get_all_text("/label",$$parser[-1]);
+ my $text = &Apache::lonxml::get_all_text("/label",$parser);
$result .= &Apache::edit::end_row().
&Apache::edit::start_spanning_row().
&Apache::edit::editline('',$text,'',60);
@@ -791,15 +824,19 @@ sub start_function {
my $result='';
if ($target eq 'web' || $target eq 'tex') {
if (exists($curves[-1]->{'data'})) {
- &Apache::lonxml::warning('Use of <function> precludes use of <data>. The <data> will be omitted in favor of the <function> declaration.');
+ &Apache::lonxml::warning
+ ('Use of the <b>curve function</b> tag precludes use of '.
+ ' the <b>curve data</b> tag. '.
+ 'The curve data tag will be omitted in favor of the '.
+ 'curve function declaration.');
delete $curves[-1]->{'data'} ;
}
- my $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,'Gnuplot compatible curve function');
- my $text = &Apache::lonxml::get_all_text("/function",$$parser[-1]);
+ my $text = &Apache::lonxml::get_all_text("/function",$parser);
$result .= &Apache::edit::end_row().
&Apache::edit::start_spanning_row().
&Apache::edit::editline('',$text,'',60);
@@ -827,12 +864,14 @@ sub start_data {
my $result='';
if ($target eq 'web' || $target eq 'tex') {
if (exists($curves[-1]->{'function'})) {
- &Apache::lonxml::warning('Use of <data> precludes use of .'.
- '<function>. The <function> will be omitted in favor of '.
- 'the <data> declaration.');
+ &Apache::lonxml::warning
+ ('Use of the <b>curve function</b> tag precludes use of '.
+ ' the <b>curve data</b> tag. '.
+ 'The curve function tag will be omitted in favor of the '.
+ 'curve data declaration.');
delete($curves[-1]->{'function'});
}
- my $datatext = &Apache::lonxml::get_all_text("/data",$$parser[-1]);
+ my $datatext = &Apache::lonxml::get_all_text("/data",$parser);
$datatext=&Apache::run::evaluate($datatext,$safeeval,$$parstack[-1]);
# Deal with cases where we're given an array...
if ($datatext =~ /^\@/) {
@@ -853,14 +892,14 @@ sub start_data {
# Check that it's non-empty
if (! defined($data[$i])) {
&Apache::lonxml::warning(
- 'undefined <data> value. Replacing with '.
+ 'undefined curve data value. Replacing with '.
' pi/e = 1.15572734979092');
$data[$i] = 1.15572734979092;
}
# Check that it's a number
if (! &$real_test($data[$i]) & ! &$int_test($data[$i])) {
&Apache::lonxml::warning(
- 'Bad <data> value of '.$data[$i].' Replacing with '.
+ 'Bad curve data value of '.$data[$i].' Replacing with '.
' pi/e = 1.15572734979092');
$data[$i] = 1.15572734979092;
}
@@ -875,7 +914,7 @@ sub start_data {
push @{$curves[-1]->{'data'}},\@data;
} elsif ($target eq 'edit') {
$result .= &Apache::edit::tag_start($target,$token,'Comma or space deliminated curve data');
- my $text = &Apache::lonxml::get_all_text("/data",$$parser[-1]);
+ my $text = &Apache::lonxml::get_all_text("/data",$parser);
$result .= &Apache::edit::end_row().
&Apache::edit::start_spanning_row().
&Apache::edit::editline('',$text,'',60);
@@ -948,8 +987,13 @@ 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') {
+ $values->{$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;
@@ -990,21 +1034,35 @@ sub write_gnuplot_file {
# set output
$gnuplot_input .= "set output\n";
} elsif ($target eq 'tex') {
- $gnuplot_input .= "set term postscript eps monochrome\n";
+ $gnuplot_input .= "set term postscript eps monochrome solid \"Helvetica\" 25 \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'.$/ :
'set noborder'.$/ );
+ # sampling rate for non-data curves
+ $gnuplot_input .= "set samples $plot{'samples'}\n";
# title, xlabel, ylabel
# titles
- $gnuplot_input .= "set title \"$title\"\n" if (defined($title)) ;
- $gnuplot_input .= "set xlabel \"$xlabel\"\n" if (defined($xlabel));
- $gnuplot_input .= "set ylabel \"$ylabel\"\n" if (defined($ylabel));
+ if ($target eq 'tex') {
+ $gnuplot_input .= "set title \"$title\" font \"Helvetica,25pt\"\n" if (defined($title)) ;
+ $gnuplot_input .= "set xlabel \"$xlabel\" font \"Helvetica,25pt\" \n" if (defined($xlabel));
+ $gnuplot_input .= "set ylabel \"$ylabel\" font \"Helvetica,25pt\"\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'} ";
@@ -1012,6 +1070,9 @@ sub write_gnuplot_file {
$gnuplot_input .= "$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'} ";
@@ -1019,6 +1080,9 @@ sub write_gnuplot_file {
$gnuplot_input .= "$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) {
@@ -1039,8 +1103,12 @@ 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'}.' '.$label->{'justify'}.' font "Helvetica,25pt"'.$/ ;
}
+ if ($target eq 'tex') {
+ $gnuplot_input .="set size 1,".$plot{'height'}/$plot{'width'}*1.38;
+ $gnuplot_input .="\n";
+ }
# curves
$gnuplot_input .= 'plot ';
for (my $i = 0;$i<=$#curves;$i++) {
@@ -1122,7 +1190,7 @@ 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 <data> or <function> declarations\n");
+ &Apache::lonxml::warning("One of the curves specified did not contain any curve data or curve function declarations\n");
return '';
}
}