--- loncom/xml/lonplot.pm 2002/03/06 19:55:30 1.55
+++ loncom/xml/lonplot.pm 2002/04/25 17:25:36 1.69
@@ -1,7 +1,7 @@
# The LearningOnline Network with CAPA
# Dynamic plot
#
-# $Id: lonplot.pm,v 1.55 2002/03/06 19:55:30 matthew Exp $
+# $Id: lonplot.pm,v 1.69 2002/04/25 17:25:36 matthew Exp $
#
# Copyright Michigan State University Board of Trustees
#
@@ -91,22 +91,20 @@ my %linestyles =
yerrorbars => [3,4],
xyerrorbars => [4,6],
boxes => 3,
-# boxerrorbars => [3,4,5],
-# boxxyerrorbars => [4,6,7],
-# financebars => 5,
-# candlesticks => 5,
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 $pos_real_test =
+ sub {$_[0]=~s/\s+//g;$_[0]=~/^[+]?\d*\.?\d*([eE][+-]\d+)?$/};
my $color_test = sub {$_[0]=~s/\s+//g;$_[0]=~/^x[\da-f]{6}$/};
my $onoff_test = sub {$_[0]=~/^(on|off)$/};
my $key_pos_test = sub {$_[0]=~/^(top|bottom|right|left|outside|below| )+$/};
my $sml_test = sub {$_[0]=~/^(small|medium|large)$/};
my $linestyle_test = sub {exists($linestyles{$_[0]})};
-my $words_test = sub {$_[0]=~s/\s+/ /g;$_[0]=~/^([\w\(\)]+ ?)+$/};
+my $words_test = sub {$_[0]=~s/\s+/ /g;$_[0]=~/^([\w~!\@\#\$\%^&\*\(\)-=_\+\[\]\{\}:\;\'<>,\.\/\?\\]+ ?)+$/};
###################################################################
## ##
@@ -114,7 +112,7 @@ my $words_test = sub {$_[0]=~s/\s+/
## ##
###################################################################
my @gnuplot_edit_order =
- qw/bgcolor fgcolor height width font transparent grid border align/;
+ qw/alttag bgcolor fgcolor height width font transparent grid border align/;
my $gnuplot_help_text = <<"ENDPLOTHELP";
<p>
@@ -150,15 +148,22 @@ 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 => 'height of image (pixels)',
edit_type => 'entry',
size => '10'
},
width => {
- default => 200,
+ default => 400,
test => $int_test,
description => 'width of image (pixels)',
edit_type => 'entry',
@@ -185,7 +190,7 @@ my %gnuplot_defaults =
edit_type => 'onoff'
},
grid => {
- default => 'off',
+ default => 'on',
test => $onoff_test,
description => 'Display grid',
edit_type => 'onoff'
@@ -204,7 +209,7 @@ my %gnuplot_defaults =
choices => ['small','medium','large']
},
align => {
- default => 'left',
+ default => 'center',
test => sub {$_[0]=~/^(left|right|center)$/},
description => 'alignment for image in html',
edit_type => 'choice',
@@ -301,6 +306,7 @@ my %tic_defaults =
},
);
+my @axis_edit_order = ('color','xmin','xmax','ymin','ymax');
my %axis_defaults =
(
color => {
@@ -362,8 +368,8 @@ first tag will be the X data and the sec
</p>
<dt> Curve Function
<dd> The <b>function</b> 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
+plotted as a formula that gnuplot can understand. <b>Be careful using this
+tag.</b> 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
@@ -371,6 +377,8 @@ is an error in your <b>function</b> tag.
</dl>
ENDCURVEHELP
+my @curve_edit_order = ('color','name','linestyle','pointtype','pointsize');
+
my %curve_defaults =
(
color => {
@@ -393,7 +401,29 @@ my %curve_defaults =
description => 'Line style',
edit_type => 'choice',
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 => $int_test,
+ description => 'point type (may not apply to all line styles)',
+ edit_type => 'choice',
+ choices => [0,1,2,3,4,5,6]
+ }
);
###################################################################
@@ -416,9 +446,6 @@ sub start_gnuplot {
'xtics','ytics'));
push (@Apache::lonxml::namespace,'lonplot');
if ($target eq 'web' || $target eq 'tex') {
- my $inside = &Apache::lonxml::get_all_text("/gnuplot",$$parser[-1]);
- $inside=&Apache::run::evaluate($inside,$safeeval,$$parstack[-1]);
- &Apache::lonxml::newparser($parser,\$inside);
&get_attributes(\%plot,\%gnuplot_defaults,$parstack,$safeeval,
$tagstack->[-1]);
} elsif ($target eq 'edit') {
@@ -443,29 +470,36 @@ sub end_gnuplot {
&Apache::lonxml::deregister('Apache::lonplot',
('title','xlabel','ylabel','key','axis','label','curve'));
my $result = '';
+ 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.'_'.$$.int(rand(1000)).'_plot.data';
+ '_'.time.'_'.$$.$randnumber.'_plot';
## Write the plot description to the file
&write_gnuplot_file($tmpdir,$filename,$target);
$filename = &Apache::lonnet::escape($filename);
## return image tag for the plot
if ($target eq 'web') {
$result .= <<"ENDIMAGE";
-<img src = "/cgi-bin/plot.gif?file=$filename&output=gif"
- width = "$plot{'width'}"
+<img src = "/cgi-bin/plot.gif?file=$filename.data&output=gif"
+ width = "$plot{'width'}"
height = "$plot{'height'}"
align = "$plot{'align'}"
- alt = "image should be /cgi-bin/plot.gif?$filename" />
+ alt = "$plot{'alttag'}" />
ENDIMAGE
} elsif ($target eq 'tex') {
- &Apache::lonnet::ssi('cgi-bin/plot.gif?file=$filename'.
- '&output=eps');
- $result = "$filename.eps";
+ &Apache::lonnet::ssi("/cgi-bin/plot.gif?file=$filename&output=eps");
+ $result = '\\\\ \graphicspath{/home/httpd/perl/tmp/}\fbox{\includegraphics[width=9.0 cm]{'.&Apache::lonnet::unescape($filename).'.eps}} \\\\';
}
} elsif ($target eq 'edit') {
$result.=&Apache::edit::tag_end($target,$token);
@@ -573,6 +607,7 @@ sub start_title {
my $result='';
if ($target eq 'web' || $target eq 'tex') {
$title = &Apache::lonxml::get_all_text("/title",$$parser[-1]);
+ $title=&Apache::run::evaluate($title,$safeeval,$$parstack[-1]);
$title =~ s/\n/ /g;
if (length($title) > $max_str_len) {
$title = substr($title,0,$max_str_len);
@@ -582,7 +617,7 @@ sub start_title {
my $text=&Apache::lonxml::get_all_text("/title",$$parser[-1]);
$result.=&Apache::edit::end_row().
&Apache::edit::start_spanning_row().
- &Apache::edit::editfield('',$text,'',60,1);
+ &Apache::edit::editline('',$text,'',60);
} elsif ($target eq 'modified') {
my $text=$$parser[-1]->get_text("/title");
$result.=&Apache::edit::rebuild_tag($token);
@@ -606,6 +641,7 @@ sub start_xlabel {
my $result='';
if ($target eq 'web' || $target eq 'tex') {
$xlabel = &Apache::lonxml::get_all_text("/xlabel",$$parser[-1]);
+ $xlabel=&Apache::run::evaluate($xlabel,$safeeval,$$parstack[-1]);
$xlabel =~ s/\n/ /g;
if (length($xlabel) > $max_str_len) {
$xlabel = substr($xlabel,0,$max_str_len);
@@ -615,7 +651,7 @@ sub start_xlabel {
my $text=&Apache::lonxml::get_all_text("/xlabel",$$parser[-1]);
$result.=&Apache::edit::end_row().
&Apache::edit::start_spanning_row().
- &Apache::edit::editfield('',$text,'',60,1);
+ &Apache::edit::editline('',$text,'',60);
} elsif ($target eq 'modified') {
my $text=$$parser[-1]->get_text("/xlabel");
$result.=&Apache::edit::rebuild_tag($token);
@@ -640,6 +676,7 @@ sub start_ylabel {
my $result='';
if ($target eq 'web' || $target eq 'tex') {
$ylabel = &Apache::lonxml::get_all_text("/ylabel",$$parser[-1]);
+ $ylabel = &Apache::run::evaluate($ylabel,$safeeval,$$parstack[-1]);
$ylabel =~ s/\n/ /g;
if (length($ylabel) > $max_str_len) {
$ylabel = substr($ylabel,0,$max_str_len);
@@ -649,7 +686,7 @@ sub start_ylabel {
my $text = &Apache::lonxml::get_all_text("/ylabel",$$parser[-1]);
$result .= &Apache::edit::end_row().
&Apache::edit::start_spanning_row().
- &Apache::edit::editfield('',$text,'',60,1);
+ &Apache::edit::editline('',$text,'',60);
} elsif ($target eq 'modified') {
my $text=$$parser[-1]->get_text("/ylabel");
$result.=&Apache::edit::rebuild_tag($token);
@@ -677,6 +714,7 @@ sub start_label {
&get_attributes(\%label,\%label_defaults,$parstack,$safeeval,
$tagstack->[-1]);
my $text = &Apache::lonxml::get_all_text("/label",$$parser[-1]);
+ $text = &Apache::run::evaluate($text,$safeeval,$$parstack[-1]);
$text =~ s/\n/ /g;
$text = substr($text,0,$max_str_len) if (length($text) > $max_str_len);
$label{'text'} = $text;
@@ -687,7 +725,7 @@ sub start_label {
my $text = &Apache::lonxml::get_all_text("/label",$$parser[-1]);
$result .= &Apache::edit::end_row().
&Apache::edit::start_spanning_row().
- &Apache::edit::editfield('',$text,'',60,1);
+ &Apache::edit::editline('',$text,'',60);
} elsif ($target eq 'modified') {
&Apache::edit::get_new_args
($token,$parstack,$safeeval,keys(%label_defaults));
@@ -722,7 +760,8 @@ sub start_curve {
} elsif ($target eq 'edit') {
$result .= &Apache::edit::tag_start($target,$token,'Curve');
$result .= &help_win($curve_help_text);
- $result .= &edit_attributes($target,$token,\%curve_defaults);
+ $result .= &edit_attributes($target,$token,\%curve_defaults,
+ \@curve_edit_order);
} elsif ($target eq 'modified') {
my $constructtag=&Apache::edit::get_new_args
($token,$parstack,$safeeval,keys(%curve_defaults));
@@ -755,14 +794,15 @@ sub start_function {
&Apache::lonxml::warning('Use of <function> precludes use of <data>. The <data> will be omitted in favor of the <function> declaration.');
delete $curves[-1]->{'data'} ;
}
- $curves[-1]->{'function'} =
- &Apache::lonxml::get_all_text("/function",$$parser[-1]);
+ my $function = &Apache::lonxml::get_all_text("/function",$$parser[-1]);
+ $function = &Apache::run::evaluate($function,$safeeval,$$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",$$parser[-1]);
$result .= &Apache::edit::end_row().
&Apache::edit::start_spanning_row().
- &Apache::edit::editfield('',$text,'',60,1);
+ &Apache::edit::editline('',$text,'',60);
} elsif ($target eq 'modified') {
$result.=&Apache::edit::rebuild_tag($token);
my $text=$$parser[-1]->get_text("/function");
@@ -793,6 +833,7 @@ sub start_data {
delete($curves[-1]->{'function'});
}
my $datatext = &Apache::lonxml::get_all_text("/data",$$parser[-1]);
+ $datatext=&Apache::run::evaluate($datatext,$safeeval,$$parstack[-1]);
# Deal with cases where we're given an array...
if ($datatext =~ /^\@/) {
$datatext = &Apache::run::run('return "'.$datatext.'"',
@@ -837,7 +878,7 @@ sub start_data {
my $text = &Apache::lonxml::get_all_text("/data",$$parser[-1]);
$result .= &Apache::edit::end_row().
&Apache::edit::start_spanning_row().
- &Apache::edit::editfield('',$text,'',60,1);
+ &Apache::edit::editline('',$text,'',60);
} elsif ($target eq 'modified') {
$result.=&Apache::edit::rebuild_tag($token);
my $text=$$parser[-1]->get_text("/data");
@@ -865,7 +906,8 @@ sub start_axis {
$tagstack->[-1]);
} elsif ($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));
@@ -949,14 +991,16 @@ sub write_gnuplot_file {
$gnuplot_input .= "set output\n";
} elsif ($target eq 'tex') {
$gnuplot_input .= "set term postscript eps monochrome\n";
- $gnuplot_input .= "set output \"$filename.eps\"\n";
+ $gnuplot_input .= "set output \"/home/httpd/perl/tmp/".
+ &Apache::lonnet::unescape($filename).".eps\"\n";
}
# grid
$gnuplot_input .= 'set grid'.$/ if ($plot{'grid'} eq 'on');
# border
$gnuplot_input .= ($plot{'border'} eq 'on'?
'set border'.$/ :
- 'set noborder'.$/ ); # title, xlabel, ylabel
+ 'set noborder'.$/ );
+ # title, xlabel, ylabel
# titles
$gnuplot_input .= "set title \"$title\"\n" if (defined($title)) ;
$gnuplot_input .= "set xlabel \"$xlabel\"\n" if (defined($xlabel));
@@ -985,7 +1029,7 @@ sub write_gnuplot_file {
if (%key) {
$gnuplot_input .= 'set key '.$key{'pos'}.' ';
if ($key{'title'} ne '') {
- $gnuplot_input .= 'title " '.$key{'title'}.'" ';
+ $gnuplot_input .= 'title "'.$key{'title'}.'" ';
}
$gnuplot_input .= ($key{'box'} eq 'on' ? 'box ' : 'nobox ').$/;
} else {
@@ -1007,6 +1051,19 @@ sub write_gnuplot_file {
$curve->{'function'}.' title "'.
$curve->{'name'}.'" with '.
$curve->{'linestyle'};
+#
+# gnuplot's term=gif driver does not handle linewidths :(
+# . ' linewidth '. $curve->{'linewidth'};
+#
+ if (($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'})) {
# Store data values in $datatext
my $datatext = '';
@@ -1030,6 +1087,15 @@ sub write_gnuplot_file {
$gnuplot_input.= '"'.$datafilename.'" title "'.
$curve->{'name'}.'" with '.
$curve->{'linestyle'};
+ if (($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'};
+ }
}
}
# Write the output to a file.
@@ -1103,11 +1169,11 @@ sub edit_attributes {
sub insert_gnuplot {
my $result = '';
# plot attributes
- $result .= "<gnuplot \n";
+ $result .= "\n<gnuplot ";
foreach my $attr (keys(%gnuplot_defaults)) {
- $result .= " $attr=\"$gnuplot_defaults{$attr}->{'default'}\"\n";
+ $result .= "\n $attr=\"$gnuplot_defaults{$attr}->{'default'}\"";
}
- $result .= ">\n";
+ $result .= ">";
# Add the components (most are commented out for simplicity)
# $result .= &insert_key();
# $result .= &insert_axis();
@@ -1116,7 +1182,7 @@ sub insert_gnuplot {
# $result .= &insert_ylabel();
$result .= &insert_curve();
# close up the <gnuplot>
- $result .= "</gnuplot>\n";
+ $result .= "\n</gnuplot>";
return $result;
}
@@ -1130,9 +1196,9 @@ sub insert_xtics {
my $result;
$result .= "\n <xtics ";
foreach my $attr (keys(%tic_defaults)) {
- $result .= "$attr=\"$tic_defaults{$attr}->{'default'}\" ";
+ $result .= "\n $attr=\"$tic_defaults{$attr}->{'default'}\" ";
}
- $result .= "/>\n";
+ $result .= "/>";
return $result;
}
@@ -1140,19 +1206,19 @@ sub insert_ytics {
my $result;
$result .= "\n <ytics ";
foreach my $attr (keys(%tic_defaults)) {
- $result .= "$attr=\"$tic_defaults{$attr}->{'default'}\" ";
+ $result .= "\n $attr=\"$tic_defaults{$attr}->{'default'}\" ";
}
- $result .= "/>\n";
+ $result .= "/>";
return $result;
}
sub insert_key {
my $result;
- $result .= "\n <key \n";
+ $result .= "\n <key ";
foreach my $attr (keys(%key_defaults)) {
- $result .= " $attr=\"$key_defaults{$attr}->{'default'}\"\n";
+ $result .= "\n $attr=\"$key_defaults{$attr}->{'default'}\"";
}
- $result .= " />\n";
+ $result .= " />";
return $result;
}
@@ -1160,24 +1226,24 @@ sub insert_axis{
my $result;
$result .= "\n <axis ";
foreach my $attr (keys(%axis_defaults)) {
- $result .= " $attr=\"$axis_defaults{$attr}->{'default'}\"\n";
+ $result .= "\n $attr=\"$axis_defaults{$attr}->{'default'}\"";
}
- $result .= " />\n";
+ $result .= " />";
return $result;
}
-sub insert_title { return "\n <title></title>\n"; }
-sub insert_xlabel { return "\n <xlabel></xlabel>\n"; }
-sub insert_ylabel { return "\n <ylabel></ylabel>\n"; }
+sub insert_title { return "\n <title></title>"; }
+sub insert_xlabel { return "\n <xlabel></xlabel>"; }
+sub insert_ylabel { return "\n <ylabel></ylabel>"; }
sub insert_label {
my $result;
$result .= "\n <label ";
foreach my $attr (keys(%label_defaults)) {
- $result .= ' '.$attr.'="'.
- $label_defaults{$attr}->{'default'}."\"\n";
+ $result .= "\n $attr=\"".
+ $label_defaults{$attr}->{'default'}."\"";
}
- $result .= " ></label>\n";
+ $result .= "></label>";
return $result;
}
@@ -1185,22 +1251,22 @@ sub insert_curve {
my $result;
$result .= "\n <curve ";
foreach my $attr (keys(%curve_defaults)) {
- $result .= ' '.$attr.'="'.
- $curve_defaults{$attr}->{'default'}."\"\n";
+ $result .= "\n $attr=\"".
+ $curve_defaults{$attr}->{'default'}."\"";
}
- $result .= " >\n";
- $result .= &insert_data().&insert_data()."</curve>\n";
+ $result .= " >";
+ $result .= &insert_data().&insert_data()."\n </curve>";
}
sub insert_function {
my $result;
- $result .= "<function></function>\n";
+ $result .= "\n <function></function>";
return $result;
}
sub insert_data {
my $result;
- $result .= " <data></data>\n";
+ $result .= "\n <data></data>";
return $result;
}