--- loncom/xml/lonplot.pm 2008/03/19 21:09:09 1.135
+++ loncom/xml/lonplot.pm 2018/09/26 15:24:46 1.180
@@ -1,7 +1,7 @@
# The LearningOnline Network with CAPA
# Dynamic plot
#
-# $Id: lonplot.pm,v 1.135 2008/03/19 21:09:09 faziophi Exp $
+# $Id: lonplot.pm,v 1.180 2018/09/26 15:24:46 raeburn Exp $
#
# Copyright Michigan State University Board of Trustees
#
@@ -26,6 +26,9 @@
# http://www.lon-capa.org/
#
+
+
+
package Apache::lonplot;
use strict;
@@ -57,6 +60,8 @@ BEGIN {
}
+=pod
+
##
## Description of data structures:
##
@@ -73,7 +78,7 @@ BEGIN {
## align
##
## @labels: $labels[$i] = \%label
-## %label: text, xpos, ypos, justify
+## %label: text, xpos, ypos, justify, rotate, zlayer
##
## @curves: $curves[$i] = \%curve
## %curve: name, linestyle, ( function | data )
@@ -88,14 +93,21 @@ BEGIN {
## ##
###################################################################
+=cut
+
my $max_str_len = 50; # if a label, title, xlabel, or ylabel text
# is longer than this, it will be truncated.
-my %linetypes =
+my %linetypes = # For png use these linetypes.
(
solid => 1,
dashed => 0
);
+my %ps_linetypes = # For ps the line types are different!
+ (
+ solid => 1,
+ dashed => 7
+ );
my %linestyles =
(
@@ -120,13 +132,22 @@ 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;$_[0]=~/^x[\da-fA-F]{6}$/};
+my $color_test;
+if ($version < 4.6) {
+ $color_test = sub {$_[0]=~s/\s+//g;$_[0]=~s/^\#/x/;$_[0]=~/^x[\da-fA-F]{6}$/};
+} else {
+ $color_test = sub {$_[0]=~s/\s+//g;$_[0]=~s/^x/#/;$_[0]=~/^\#[\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]=~/^(\d+|small|medium|large)$/};
my $linestyle_test = sub {exists($linestyles{$_[0]})};
my $words_test = sub {$_[0]=~s/\s+/ /g;$_[0]=~/^([\w~!\@\#\$\%^&\*\(\)-=_\+\[\]\{\}:\;\'<>,\.\/\?\\]+ ?)+$/};
+my $arrowhead_test = sub{$_[0]=~/^(nohead|head|heads| )+$/};
+my $arrowstyle_test= sub{$_[0]=~/^(filled|empty|nofilled)+$/};
+my $degree_test = sub{&$pos_real_test($_[0]) && ($_[0] <= 360.0)};
+
###################################################################
## ##
## Attribute metadata ##
@@ -169,14 +190,16 @@ my %gnuplot_defaults =
test => $color_test,
description => 'Background color of image (xffffff)',
edit_type => 'entry',
- size => '10'
+ size => '10',
+ class => 'colorchooser'
},
fgcolor => {
default => 'x000000',
test => $color_test,
description => 'Foreground color of image (x000000)',
edit_type => 'entry',
- size => '10'
+ size => '10',
+ class => 'colorchooser'
},
transparent => {
default => 'off',
@@ -235,7 +258,7 @@ my %gnuplot_defaults =
test => sub {$_[0]=~/^(left|right|middle|center)$/},
description => 'Alignment for image in HTML',
edit_type => 'choice',
- choices => ['left','right','middle']
+ choices => ['left','right','middle','center']
},
texwidth => {
default => '93',
@@ -398,7 +421,14 @@ my %label_defaults =
description => 'Rotation of label (degrees)',
edit_type => 'entry',
size => '10',
- }
+ },
+ zlayer => {
+ default => '',
+ test => sub {$_[0]=~/^(front|back)$/},
+ description => 'Z position of label',
+ edit_type => 'choice',
+ choices => ['front','back'],
+ },
);
my @tic_edit_order = ('location','mirror','start','increment','end',
@@ -445,10 +475,16 @@ my %tic_defaults =
description => 'Number of minor tics per major tic mark',
edit_type => 'entry',
size => '10'
- },
+ },
+ rotate => {
+ default => 'off',
+ test => $onoff_test,
+ description => 'Rotate tic label by 90 degrees if on',
+ edit_type => 'onoff'
+ }
);
-my @axis_edit_order = ('color','xmin','xmax','ymin','ymax','xformat', 'yformat');
+my @axis_edit_order = ('color','xmin','xmax','ymin','ymax','xformat', 'yformat', 'xzero', 'yzero');
my %axis_defaults =
(
color => {
@@ -456,7 +492,8 @@ my %axis_defaults =
test => $color_test,
description => 'Color of grid lines (x000000)',
edit_type => 'entry',
- size => '10'
+ size => '10',
+ class => 'colorchooser'
},
xmin => {
default => '-10.0',
@@ -488,22 +525,41 @@ my %axis_defaults =
},
xformat => {
default => 'on',
- test => sub {$_[0]=~/^(on|off|\d+(f|F|e|E))$/},
+ test => sub {$_[0]=~/^(on|off|\d+(f|F|e|E|P(|\s*\Q\0317\0200\E)))$/},
description => 'X-axis number formatting',
edit_type => 'choice',
choices => ['on', 'off', '2e', '2f'],
},
yformat => {
default => 'on',
- test => sub {$_[0]=~/^(on|off|\d+(f|F|e|E))$/},
- description => 'X-axis number formatting',
+ test => sub {$_[0]=~/^(on|off|\d+(f|F|e|E|P(|\s*\Q\0317\0200\E)))$/},
+ description => 'Y-axis number formatting',
edit_type => 'choice',
choices => ['on', 'off', '2e', '2f'],
},
-
+
+ xzero => {
+ default => 'off',
+ test => sub {$_[0]=~/^(off|line|thick-line|dotted)$/},
+ description => 'Show x-zero (y=0) axis',
+ edit_type => 'choice',
+ choices => ['off', 'line', 'thick-line', 'dotted'],
+ },
+
+ yzero => {
+ default => 'off',
+ test => sub {$_[0]=~/^(off|line|thick-line|dotted)$/},
+ description => 'Show y-zero (x=0) axis',
+ edit_type => 'choice',
+ choices => ['off', 'line', 'thick-line', 'dotted'],
+ },
);
-my @curve_edit_order = ('color','name','linestyle','linewidth','linetype','pointtype','pointsize','limit');
+
+my @curve_edit_order = ('color','name','linestyle','linewidth','linetype',
+ 'pointtype','pointsize','limit', 'arrowhead', 'arrowstyle',
+ 'arrowlength', 'arrowangle', 'arrowbackangle'
+ );
my %curve_defaults =
(
@@ -512,7 +568,8 @@ my %curve_defaults =
test => $color_test,
description => 'Color of curve (x000000)',
edit_type => 'entry',
- size => '10'
+ size => '10',
+ class => 'colorchooser'
},
name => {
default => '',
@@ -563,6 +620,43 @@ my %curve_defaults =
edit_type => 'choice',
choices => ['above', 'below', 'closed','x1','x2','y1','y2']
},
+ arrowhead => {
+ default => 'head',
+ test => $arrowhead_test,
+ description => 'Vector arrow head type',
+ edit_type => 'choice',
+ choices => ['nohead', 'head', 'heads']
+ },
+ arrowstyle => {
+ default => 'filled',
+ test => $arrowstyle_test,
+ description => 'Vector arrow head style',
+ edit_type => 'choice',
+ choices => ['filled', 'empty', 'nofilled']
+ },
+ arrowlength => {
+ default => 0.02,
+ test => $pos_real_test,
+ description => "Length of vector arrow (only applies to vector plots)",
+ edit_type => 'entry',
+ size => '5'
+ },
+ arrowangle => {
+ default => 10.0,
+ test => $degree_test,
+ description => 'Angle of arrow branches to arrow body (only applies to vector plots)',
+ edit_type => 'entry',
+ size => '5'
+ },
+
+ arrowbackangle => {
+ default => 90.0,
+ test => $degree_test,
+ descripton => 'Angle of arrow back lines to branches.',
+ edit_type => 'entry',
+ size => '5'
+ }
+
);
###################################################################
@@ -574,6 +668,8 @@ my %curve_defaults =
undef %Apache::lonplot::plot;
my (%key,%axis,$title,$xlabel,$ylabel,@labels,@curves,%xtics,%ytics);
+my $current_tics; # Reference to the current tick hash
+
sub start_gnuplot {
undef(%Apache::lonplot::plot); undef(%key); undef(%axis);
undef($title); undef($xlabel); undef($ylabel);
@@ -598,7 +694,18 @@ sub start_gnuplot {
} elsif ($target eq 'modified') {
my $constructtag=&Apache::edit::get_new_args
($token,$parstack,$safeeval,keys(%gnuplot_defaults));
+
if ($constructtag) {
+ #
+ # The color chooser does not prepent x to the color values
+ # Do that here:
+ #
+ foreach my $attribute ('bgcolor', 'fgcolor') {
+ my $value = $token->[2]{$attribute};
+ if (defined $value && !($value =~ /^x/)) {
+ $token->[2]{$attribute} = 'x' . $value;
+ }
+ }
$result = &Apache::edit::rebuild_tag($token);
}
}
@@ -612,6 +719,8 @@ sub end_gnuplot {
('title','xlabel','ylabel','key','axis','label','curve'));
my $result = '';
my $randnumber;
+ my $tmpdir =LONCAPA::tempdir(); # Where temporary files live:
+
# need to call rand everytime start_script would evaluate, as the
# safe space rand number generator and the global rand generator
# are not separate
@@ -623,7 +732,6 @@ sub end_gnuplot {
&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.'_'.$$.$randnumber.'_plot';
## Write the plot description to the file
@@ -631,21 +739,33 @@ sub end_gnuplot {
$filename = &escape($filename);
## return image tag for the plot
if ($target eq 'web') {
- $result .= <<"ENDIMAGE";
-<img src = "/cgi-bin/plot.$weboutputformat?file=$filename.data"
- width = "$Apache::lonplot::plot{'width'}"
- height = "$Apache::lonplot::plot{'height'}"
- align = "$Apache::lonplot::plot{'align'}"
- alt = "$Apache::lonplot::plot{'alttag'}" />
-ENDIMAGE
+ my $srcatt = "src=\"/cgi-bin/plot.$weboutputformat?file=$filename.data\"";
+ my $widthatt = "width=\"$Apache::lonplot::plot{'width'}\"";
+ my $heightatt = "height=\"$Apache::lonplot::plot{'height'}\"";
+ my $alignatt = "align=\"$Apache::lonplot::plot{'align'}\"";
+ my $altatt = "alt=\"$Apache::lonplot::plot{'alttag'}\"";
+ if ($Apache::lonplot::plot{'align'} eq 'center') {
+ $result .= '<div style="text-align:center">'.
+ "<img $srcatt $widthatt $heightatt $altatt>".
+ "</div>\n";
+
+ } else {
+ $result .= "<img $srcatt $widthatt $heightatt $alignatt $altatt>";
+ }
} 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 = "%DYNAMICIMAGE:$Apache::lonplot::plot{'width'}:$Apache::lonplot::plot{'height'}:$Apache::lonplot::plot{'texwidth'}\n";
- $result .= '\graphicspath{{/home/httpd/perl/tmp/}}'."\n";
+ $result .= '\graphicspath{{'.$tmpdir.'}}'."\n";
+ if ($Apache::lonplot::plot{'align'} eq 'center') {
+ $result .= '\begin{center}';
+ }
$result .= '\includegraphics[width='.$Apache::lonplot::plot{'texwidth'}.' mm]{'.&unescape($filename).'.eps}';
+ if ($Apache::lonplot::plot{'align'} eq 'center') {
+ $result .= '\end{center}';
+ }
}
} elsif ($target eq 'edit') {
$result.=&Apache::edit::tag_end($target,$token);
@@ -661,6 +781,8 @@ sub start_xtics {
if ($target eq 'web' || $target eq 'tex') {
&get_attributes(\%xtics,\%tic_defaults,$parstack,$safeeval,
$tagstack->[-1]);
+ $current_tics = \%xtics;
+ &Apache::lonxml::register('Apache::lonplot', 'tic');
} elsif ($target eq 'edit') {
$result .= &Apache::edit::tag_start($target,$token,'xtics');
$result .= &edit_attributes($target,$token,\%tic_defaults,
@@ -679,6 +801,7 @@ sub end_xtics {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my $result = '';
if ($target eq 'web' || $target eq 'tex') {
+ &Apache::lonxml::deregister('Apache::lonplot', 'tic');
} elsif ($target eq 'edit') {
$result.=&Apache::edit::tag_end($target,$token);
}
@@ -692,6 +815,8 @@ sub start_ytics {
if ($target eq 'web' || $target eq 'tex') {
&get_attributes(\%ytics,\%tic_defaults,$parstack,$safeeval,
$tagstack->[-1]);
+ $current_tics = \%ytics;
+ &Apache::lonxml::register('Apache::lonplot', 'tic');
} elsif ($target eq 'edit') {
$result .= &Apache::edit::tag_start($target,$token,'ytics');
$result .= &edit_attributes($target,$token,\%tic_defaults,
@@ -710,12 +835,55 @@ sub end_ytics {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my $result = '';
if ($target eq 'web' || $target eq 'tex') {
+ &Apache::lonxml::deregister('Apache::lonplot', 'tic');
} elsif ($target eq 'edit') {
$result.=&Apache::edit::tag_end($target,$token);
}
return $result;
}
+
+##----------------------------------------------------------------
+#
+# Tic handling:
+# The <tic> tag allows users to specify exact Tic positions and labels
+# for each axis. In this version we only support level 0 tics (major tic).
+# Each tic has associated with it a position and a label
+# $current_tics is a reference to the current tick description hash.
+# We add elements to an array in that has: ticspecs whose elements
+# are 'pos' - the tick position and 'label' - the tic label.
+#
+
+
+sub start_tic {
+ my ($target, $token, $tagstack, $parstack, $parser, $safeeval, $style) = @_;
+
+ my $result = '';
+ if ($target eq 'web' || $target eq 'tex') {
+ my $tic_location = &Apache::lonxml::get_param('location', $parstack, $safeeval);
+ my $tic_label = &Apache::lonxml::get_all_text('/tic', $parser);
+
+ # Tic location must e a real:
+
+ if (!&$real_test($tic_location)) {
+ &Apache::lonxml::warning("Tic location: $tic_location must be a real number");
+ } else {
+
+ if (!defined $current_tics->{'ticspecs'}) {
+ $current_tics->{'ticspecs'} = [];
+ }
+ my $ticspecs = $current_tics->{'ticspecs'};
+ push (@$ticspecs, {'pos' => $tic_location, 'label' => $tic_label});
+ }
+ }
+
+ return $result;
+}
+
+sub end_tic {
+ return '';
+}
+
##-----------------------------------------------------------------font
my %font_properties =
(
@@ -757,6 +925,7 @@ sub get_font {
$selected_font = $font_properties{$Apache::lonplot::plot{'fontface'}};
}
if ($target eq 'tex' && defined($Apache::lonplot::plot{'texfont'})) {
+# $selected_font = $font_properties{'classic'};
$size = $Apache::lonplot::plot{'texfont'};
}
return ($size, $selected_font);
@@ -819,56 +988,340 @@ sub parse_label {
return $result;
}
+#
+# Note that there are severe restrictions on font selection in the
+# ps driver now. later in life Gnuplot is supposed to support
+# utf-8 fonts in the posts script driver. When this happens,
+# the tex entries with comments that include the word <FIX>
+# should be changed to print the correct glyphs rather than some
+# approximation or fallback of what is intended.
my %lookup =
- ('(Alpha|#913)' => {'tex' => '{/Symbol A}', 'web' => "\x{391}"},
- '(Beta|#914)' => {'tex' => '{/Symbol B}', 'web' => "\x{392}"},
- '(Chi|#935)' => {'tex' => '{/Symbol C}', 'web' => "\x{3A7}"},
- '(Delta|#916)' => {'tex' => '{/Symbol D}', 'web' => "\x{394}"},
- '(Epsilon|#917)' => {'tex' => '{/Symbol E}', 'web' => "\x{395}"},
- '(Phi|#934)' => {'tex' => '{/Symbol F}', 'web' => "\x{3A6}"},
- '(Gamma|#915)' => {'tex' => '{/Symbol G}', 'web' => "\x{393}"},
- '(Eta|#919)' => {'tex' => '{/Symbol H}', 'web' => "\x{397}"},
- '(Iota|#921)' => {'tex' => '{/Symbol I}', 'web' => "\x{399}"},
- '(Kappa|#922)' => {'tex' => '{/Symbol K}', 'web' => "\x{39A}"},
- '(Lambda|#923)' => {'tex' => '{/Symbol L}', 'web' => "\x{39B}"},
- '(Mu|#924)' => {'tex' => '{/Symbol M}', 'web' => "\x{39C}"},
- '(Nu|#925)' => {'tex' => '{/Symbol N}', 'web' => "\x{39D}"},
- '(Omicron|#927)' => {'tex' => '{/Symbol O}', 'web' => "\x{39F}"},
- '(Pi|#928)' => {'tex' => '{/Symbol P}', 'web' => "\x{3A0}"},
- '(Theta|#920)' => {'tex' => '{/Symbol Q}', 'web' => "\x{398}"},
- '(Rho|#929)' => {'tex' => '{/Symbol R}', 'web' => "\x{3A1}"},
- '(Sigma|#931)' => {'tex' => '{/Symbol S}', 'web' => "\x{3A3}"},
- '(Tau|#932)' => {'tex' => '{/Symbol T}', 'web' => "\x{3A4}"},
- '(Upsilon|#933)' => {'tex' => '{/Symbol U}', 'web' => "\x{3A5}"},
- '(Omega|#937)' => {'tex' => '{/Symbol W}', 'web' => "\x{3A9}"},
- '(Xi|#926)' => {'tex' => '{/Symbol X}', 'web' => "\x{39E}"},
- '(Psi|#936)' => {'tex' => '{/Symbol Y}', 'web' => "\x{3A8}"},
- '(Zeta|#918)' => {'tex' => '{/Symbol Z}', 'web' => "\x{396}"},
- '(alpha|#945)' => {'tex' => '{/Symbol a}', 'web' => "\x{3B1}"},
- '(beta|#946)' => {'tex' => '{/Symbol b}', 'web' => "\x{3B2}"},
- '(chi|#967)' => {'tex' => '{/Symbol c}', 'web' => "\x{3C7}"},
- '(delta|#948)' => {'tex' => '{/Symbol d}', 'web' => "\x{3B4}"},
- '(epsilon|#949)' => {'tex' => '{/Symbol e}', 'web' => "\x{3B5}"},
- '(phi|#966)' => {'tex' => '{/Symbol f}', 'web' => "\x{3C6}"},
- '(gamma|#947)' => {'tex' => '{/Symbol g}', 'web' => "\x{3B3}"},
- '(eta|#951)' => {'tex' => '{/Symbol h}', 'web' => "\x{3B7}"},
- '(iota|#953)' => {'tex' => '{/Symbol i}', 'web' => "\x{3B9}"},
- '(kappa|#954)' => {'tex' => '{/Symbol k}', 'web' => "\x{3BA}"},
- '(lambda|#955)' => {'tex' => '{/Symbol k}', 'web' => "\x{3BB}"},
- '(mu|#956)' => {'tex' => '{/Symbol m}', 'web' => "\x{3BC}"},
- '(nu|#957)' => {'tex' => '{/Symbol n}', 'web' => "\x{3BD}"},
- '(omicron|#959)' => {'tex' => '{/Symbol o}', 'web' => "\x{3BF}"},
- '(pi|#960)' => {'tex' => '{/Symbol p}', 'web' => "\x{3C0}"},
- '(theta|#952)' => {'tex' => '{/Symbol q}', 'web' => "\x{3B8}"},
- '(rho|#961)' => {'tex' => '{/Symbol r}', 'web' => "\x{3C1}"},
- '(sigma|#963)' => {'tex' => '{/Symbol s}', 'web' => "\x{3C3}"},
- '(tau|#964)' => {'tex' => '{/Symbol t}', 'web' => "\x{3C4}"},
- '(upsilon|#965)' => {'tex' => '{/Symbol u}', 'web' => "\x{3C5}"},
- '(omega|#969)' => {'tex' => '{/Symbol w}', 'web' => "\x{3C9}"},
- '(xi|#958)' => {'tex' => '{/Symbol x}', 'web' => "\x{3BE}"},
- '(psi|#968)' => {'tex' => '{/Symbol y}', 'web' => "\x{3C8}"},
- '(zeta|#950)' => {'tex' => '{/Symbol z}', 'web' => "\x{3B6}"},
+ ( # Greek alphabet:
+
+ '(Alpha|#913)' => {'tex' => '{/Symbol A}', 'web' => "\x{391}"},
+ '(Beta|#914)' => {'tex' => '{/Symbol B}', 'web' => "\x{392}"},
+ '(Chi|#935)' => {'tex' => '{/Symbol C}', 'web' => "\x{3A7}"},
+ '(Delta|#916)' => {'tex' => '{/Symbol D}', 'web' => "\x{394}"},
+ '(Epsilon|#917)' => {'tex' => '{/Symbol E}', 'web' => "\x{395}"},
+ '(Phi|#934)' => {'tex' => '{/Symbol F}', 'web' => "\x{3A6}"},
+ '(Gamma|#915)' => {'tex' => '{/Symbol G}', 'web' => "\x{393}"},
+ '(Eta|#919)' => {'tex' => '{/Symbol H}', 'web' => "\x{397}"},
+ '(Iota|#921)' => {'tex' => '{/Symbol I}', 'web' => "\x{399}"},
+ '(Kappa|#922)' => {'tex' => '{/Symbol K}', 'web' => "\x{39A}"},
+ '(Lambda|#923)' => {'tex' => '{/Symbol L}', 'web' => "\x{39B}"},
+ '(Mu|#924)' => {'tex' => '{/Symbol M}', 'web' => "\x{39C}"},
+ '(Nu|#925)' => {'tex' => '{/Symbol N}', 'web' => "\x{39D}"},
+ '(Omicron|#927)' => {'tex' => '{/Symbol O}', 'web' => "\x{39F}"},
+ '(Pi|#928)' => {'tex' => '{/Symbol P}', 'web' => "\x{3A0}"},
+ '(Theta|#920)' => {'tex' => '{/Symbol Q}', 'web' => "\x{398}"},
+ '(Rho|#929)' => {'tex' => '{/Symbol R}', 'web' => "\x{3A1}"},
+ '(Sigma|#931)' => {'tex' => '{/Symbol S}', 'web' => "\x{3A3}"},
+ '(Tau|#932)' => {'tex' => '{/Symbol T}', 'web' => "\x{3A4}"},
+ '(Upsilon|#933)' => {'tex' => '{/Symbol U}', 'web' => "\x{3A5}"},
+ '(Omega|#937)' => {'tex' => '{/Symbol W}', 'web' => "\x{3A9}"},
+ '(Xi|#926)' => {'tex' => '{/Symbol X}', 'web' => "\x{39E}"},
+ '(Psi|#936)' => {'tex' => '{/Symbol Y}', 'web' => "\x{3A8}"},
+ '(Zeta|#918)' => {'tex' => '{/Symbol Z}', 'web' => "\x{396}"},
+ '(alpha|#945)' => {'tex' => '{/Symbol a}', 'web' => "\x{3B1}"},
+ '(beta|#946)' => {'tex' => '{/Symbol b}', 'web' => "\x{3B2}"},
+ '(chi|#967)' => {'tex' => '{/Symbol c}', 'web' => "\x{3C7}"},
+ '(delta|#948)' => {'tex' => '{/Symbol d}', 'web' => "\x{3B4}"},
+ '(epsilon|#949)' => {'tex' => '{/Symbol e}', 'web' => "\x{3B5}"},
+ '(phi|#966)' => {'tex' => '{/Symbol f}', 'web' => "\x{3C6}"},
+ '(gamma|#947)' => {'tex' => '{/Symbol g}', 'web' => "\x{3B3}"},
+ '(eta|#951)' => {'tex' => '{/Symbol h}', 'web' => "\x{3B7}"},
+ '(iota|#953)' => {'tex' => '{/Symbol i}', 'web' => "\x{3B9}"},
+ '(kappa|#954)' => {'tex' => '{/Symbol k}', 'web' => "\x{3BA}"},
+ '(lambda|#955)' => {'tex' => '{/Symbol k}', 'web' => "\x{3BB}"},
+ '(mu|#956)' => {'tex' => '{/Symbol m}', 'web' => "\x{3BC}"},
+ '(nu|#957)' => {'tex' => '{/Symbol n}', 'web' => "\x{3BD}"},
+ '(omicron|#959)' => {'tex' => '{/Symbol o}', 'web' => "\x{3BF}"},
+ '(pi|#960)' => {'tex' => '{/Symbol p}', 'web' => "\x{3C0}"},
+ '(theta|#952)' => {'tex' => '{/Symbol q}', 'web' => "\x{3B8}"},
+ '(rho|#961)' => {'tex' => '{/Symbol r}', 'web' => "\x{3C1}"},
+ '(sigma|#963)' => {'tex' => '{/Symbol s}', 'web' => "\x{3C3}"},
+ '(tau|#964)' => {'tex' => '{/Symbol t}', 'web' => "\x{3C4}"},
+ '(upsilon|#965)' => {'tex' => '{/Symbol u}', 'web' => "\x{3C5}"},
+ '(omega|#969)' => {'tex' => '{/Symbol w}', 'web' => "\x{3C9}"},
+ '(xi|#958)' => {'tex' => '{/Symbol x}', 'web' => "\x{3BE}"},
+ '(psi|#968)' => {'tex' => '{/Symbol y}', 'web' => "\x{3C8}"},
+ '(zeta|#950)' => {'tex' => '{/Symbol z}', 'web' => "\x{3B6}"},
+ '(thetasym|#977)' => {'tex' => '{/Symbol \165}', 'web' => "\x{3d1}"},
+ '(upsih|#978)' => {'tex' => '{/Symbol \241}', 'web' => "\x{3d2}"},
+ '(piv|#982)' => {'tex' => '{/Symbol \166}', 'web' => "\x{3d6}"},
+
+
+ # Punctuation:
+
+ '(quot|#034)' => {'tex' => '\42', 'web' => '\42'},
+ '(amp|#038)' => {'tex' => '\46', 'web' => '\46'},
+ '(lt|#060)' => {'tex' => '\74', 'web' => '\74'},
+ '(gt|#062)' => {'tex' => '\76', 'web' => '\76'},
+ '#131' => {'tex' => '{/Symbol \246}', 'web' => "\x{192}"},
+ '#132' => {'tex' => '{/Text \271}', 'web' => "\x{201e}"},
+ '#133' => {'tex' => '{/Symbol \274}', 'web'=> "\x{2026}"},
+ '#134' => {'tex' => '{/Text \262}', 'web' => "\x{2020}"},
+ '#135' => {'tex' => '{/Text \263}', 'web' => "\x{2021}"},
+ '#136' => {'tex' => '\\\\^', 'web' => '\\\\^'},
+ '#137' => {'tex' => '%o', 'web' => "\x{2030}"}, # Per Mille <FIX>
+ '#138' => {'tex' => 'S', 'web' => "\x{160}"}, # S-Caron <FIX>
+ '#139' => {'tex' => '<', 'web' => '<'},
+ '#140' => {'tex' => 'AE', 'web' => "\x{152}"}, # AE ligature <FIX>
+ '#145' => {'tex' => '\140', 'web' => "\x{2018}"},
+ '#146' => {'tex' => '\47', 'web' => "\x{2019}"},
+ '#147' => {'tex' => '\140\140', 'web' => "\x{201c}"}, # Left " <FIX>
+ '#148' => {'tex' => '\47\47', 'web' => '\\"'}, # Right " <FIX>
+ '#149' => {'tex' => '{/Symbol \267}', 'web' => "\x{2022}"},
+ '#150' => {'tex' => '{/Text \55}', 'web' => "\x{2013}"}, # en dash
+ '#151' => {'tex' => '{/Symbol \55}', 'web' => "\x{2014}"}, # em dash
+ '#152' => {'tex' => '\\\\~', 'web' => '\\\\~'},
+ '#153' => {'tex' => '{/Symbol \324}', 'web' => "\x{2122}"}, # trademark
+
+ # Accented letters, and other furreign language glyphs.
+
+ '#154' => {'tex' => 's', 'web' => "\x{161}"}, # small s-caron no ps.
+ '#155' => {'tex' => '>', 'web' => '\76'}, # >
+ '#156' => {'tex' => '{/Text \366}', 'web' => "\x{153}"}, # oe ligature.<FIX>
+ '#159', => {'tex' => 'Y', 'web' => "\x{178}"}, # Y-umlaut - can't print <FIX>
+ '(nbsp|#160)' => {'tex' => ' ', 'web' => ' '}, # non breaking space.
+ '(iexcl|#161)' => {'tex' => '{/Text \241}', 'web' => "\x{a1}"}, # inverted !
+ '(cent|#162)' => {'tex' => '{/Text \242}', 'web' => "\x{a2}"}, # Cent currency.
+ '(pound|#163)' => {'tex' => '{/Text \243}', 'web' => "\x{a3}"}, # GB Pound currency.
+ '(curren|#164)' => {'tex' => '{/ZapfDingbats \161}','web' => "\x{a4}"}, # Generic currency symb. <FIX>
+ '(yen|#165)' => {'tex' => '{/Text \245}', 'web' => "\x{a5}"}, # Yen currency.
+ '(brvbar|#166)' => {'tex' => '{/Symbol \174}', 'web' => "\x{a6}"}, # Broken vert bar no print.
+ '(sect|#167)' => {'tex' => '{\247}', 'web' => "\x{a7}"}, # Section symbol.
+ '(uml|#168)' => {'tex' => '{\250}', 'web' => "\x{a8}"}, # 'naked' umlaut.
+ '(copy|#169)' => {'tex' => '{/Symbol \343}', 'web' => "\x{a9}"}, # Copyright symbol.
+ '(ordf|#170)' => {'tex' => '{/Text \343}', 'web' => "\x{aa}"}, # Feminine ordinal.
+ '(laquo|#171)' => {'tex' => '{/Text \253}', 'web' => "\x{ab}"}, # << quotes.
+ '(not|#172)' => {'tex' => '\254', 'web' => "\x{ac}"}, # Logical not.
+ '(shy|#173)' => {'tex' => '\255', 'web' => "\x{ad}"}, # soft hyphen.
+ '(reg|#174)' => {'tex' => '{/Symbol \342}', 'web' => "\x{ae}"}, # Registered tm.
+ '(macr|#175)' => {'tex' => '^{\255}', 'web' => "\x{af}"}, # 'naked' macron (overbar).
+ '(deg|#176)' => {'tex' => '{/Text \260}', 'web' => "\x{b0}"}, # Degree symbo..`
+ '(plusmn|#177)' => {'tex' => '{/Symbol \261}', 'web' => "\x{b1}"}, # +/- symbol.
+ '(sup2|#178)' => {'tex' => '^2', 'web' => "\x{b2}"}, # Superscript 2.
+ '(sup3|#179)' => {'tex' => '^3', 'web' => "\x{b3}"}, # Superscript 3.
+ '(acute|#180)' => {'tex' => '{/Text \222}', 'web' => "\x{b4}"}, # 'naked' acute accent.
+ '(micro|#181)' => {'tex' => '{/Symbol \155}', 'web' => "\x{b5}"}, # Micro (small mu).
+ '(para|#182)' => {'tex' => '{/Text \266}', 'web' => "\x{b6}"}, # Paragraph symbol.
+ '(middot|#183)' => {'tex' => '\267', 'web' => "\x{b7}"}, # middle dot
+ '(cedil|#184)' => {'tex' => '\233', 'web' => "\x{b8}"}, # 'naked' cedilla.
+ '(sup1|#185)' => {'tex' => '^1', 'web' => "\x{b9}"}, # superscript 1.
+ '(ordm|#186)' => {'tex' => '{\260}', 'web' => "\x{ba}"}, # masculine ordinal.
+ '(raquo|#187)', => {'tex' => '\273', 'web' => "\x{bb}"}, # Right angle quotes.
+ '(frac14|#188)' => {'tex' => '\274', 'web' => "\x{bc}"}, # 1/4.
+ '(frac12|#189)' => {'tex' => '\275', 'web' => "\x{bd}"}, # 1/2.
+ '(frac34|#190)' => {'tex' => '\276', 'web' => "\x{be}"}, # 3/4
+ '(iquest|#191)' => {'tex' => '{/Text \277}', 'web' => "\x{bf}"}, # Inverted ?
+ '(Agrave|#192)' => {'tex' => '\300', 'web' => "\x{c0}"}, # A Grave.
+ '(Aacute|#193)' => {'tex' => '\301', 'web' => "\x{c1}"}, # A Acute.
+ '(Acirc|#194)' => {'tex' => '\302', 'web' => "\x{c2}"}, # A Circumflex.
+ '(Atilde|#195)' => {'tex' => '\303', 'web' => "\x{c3}"}, # A tilde.
+ '(Auml|#196)' => {'tex' => '\304', 'web' => "\x{c4}"}, # A umlaut.
+ '(Aring|#197)' => {'tex' => '\305', 'web' => "\x{c5}"}, # A ring.
+ '(AElig|#198)' => {'tex' => '\306', 'web' => "\x{c6}"}, # AE ligature.
+ '(Ccedil|#199)' => {'tex' => '\307', 'web' => "\x{c7}"}, # C cedilla
+ '(Egrave|#200)' => {'tex' => '\310', 'web' => "\x{c8}"}, # E Accent grave.
+ '(Eacute|#201)' => {'tex' => '\311', 'web' => "\x{c9}"}, # E acute accent.
+ '(Ecirc|#202)' => {'tex' => '\312', 'web' => "\x{ca}"}, # E Circumflex.
+ '(Euml|#203)' => {'tex' => '\313', 'web' => "\x{cb}"}, # E umlaut.
+ '(Igrave|#204)' => {'tex' => '\314', 'web' => "\x{cc}"}, # I grave accent.
+ '(Iacute|#205)' => {'tex' => '\315', 'web' => "\x{cd}"}, # I acute accent.
+ '(Icirc|#206)' => {'tex' => '\316', 'web' => "\x{ce}"}, # I circumflex.
+ '(Iuml|#207)' => {'tex' => '\317', 'web' => "\x{cf}"}, # I umlaut.
+ '(ETH|#208)' => {'tex' => '\320', 'web' => "\x{d0}"}, # Icelandic Cap eth.
+ '(Ntilde|#209)' => {'tex' => '\321', 'web' => "\x{d1}"}, # Ntilde (enyan).
+ '(Ograve|#210)' => {'tex' => '\322', 'web' => "\x{d2}"}, # O accent grave.
+ '(Oacute|#211)' => {'tex' => '\323', 'web' => "\x{d3}"}, # O accent acute.
+ '(Ocirc|#212)' => {'tex' => '\324', 'web' => "\x{d4}"}, # O circumflex.
+ '(Otilde|#213)' => {'tex' => '\325', 'web' => "\x{d5}"}, # O tilde.
+ '(Ouml|#214)' => {'tex' => '\326', 'web' => "\x{d6}"}, # O umlaut.
+ '(times|#215)' => {'tex' => '\327', 'web' => "\x{d7}"}, # Times symbol.
+ '(Oslash|#216)' => {'tex' => '\330', 'web' => "\x{d8}"}, # O slash.
+ '(Ugrave|#217)' => {'tex' => '\331', 'web' => "\x{d9}"}, # U accent grave.
+ '(Uacute|#218)' => {'tex' => '\332', 'web' => "\x{da}"}, # U accent acute.
+ '(Ucirc|#219)' => {'tex' => '\333', 'web' => "\x{db}"}, # U circumflex.
+ '(Uuml|#220)' => {'tex' => '\334', 'web' => "\x{dc}"}, # U umlaut.
+ '(Yacute|#221)' => {'tex' => '\335', 'web' => "\x{dd}"}, # Y accent acute.
+ '(THORN|#222)' => {'tex' => '\336', 'web' => "\x{de}"}, # Icelandic thorn.
+ '(szlig|#223)' => {'tex' => '\337', 'web' => "\x{df}"}, # German sharfes s.
+ '(agrave|#224)' => {'tex' => '\340', 'web' => "\x{e0}"}, # a accent grave.
+ '(aacute|#225)' => {'tex' => '\341', 'web' => "\x{e1}"}, # a grave.
+ '(acirc|#226)' => {'tex' => '\342', 'web' => "\x{e2}"}, # a circumflex.
+ '(atilde|#227)' => {'tex' => '\343', 'web' => "\x{e3}"}, # a tilde.
+ '(auml|#228)' => {'tex' => '\344', 'web' => "\x{e4}"}, # a umlaut
+ '(aring|#229)' => {'tex' => '\345', 'web' => "\x{e5}"}, # a ring on top.
+ '(aelig|#230)' => {'tex' => '\346', 'web' => "\x{e6}"}, # ae ligature.
+ '(ccedil|#231)' => {'tex' => '\347', 'web' => "\x{e7}"}, # C cedilla
+ '(egrave|#232)' => {'tex' => '\350', 'web' => "\x{e8}"}, # e accent grave.
+ '(eacute|#233)' => {'tex' => '\351', 'web' => "\x{e9}"}, # e accent acute.
+ '(ecirc|#234)' => {'tex' => '\352', 'web' => "\x{ea}" }, # e circumflex.
+ '(euml|#235)' => {'tex' => '\353', 'web' => "\x{eb}"}, # e umlaut.
+ '(igrave|#236)' => {'tex' => '\354', 'web' => "\x{ec}"}, # i grave.
+ '(iacute|#237)' => {'tex' => '\355', 'web' => "\x{ed}"}, # i acute.
+ '(icirc|#238)' => {'tex' => '\356', 'web' => "\x{ee}"}, # i circumflex.
+ '(iuml|#239)' => {'tex' => '\357', 'web' => "\x{ef}"}, # i umlaut.
+ '(eth|#240)' => {'tex' => '\360', 'web' => "\x{f0}"}, # Icelandic eth.
+ '(ntilde|#241)' => {'tex' => '\361', 'web' => "\x{f1}"}, # n tilde.
+ '(ograve|#242)' => {'tex' => '\362', 'web' => "\x{f2}"}, # o grave.
+ '(oacute|#243)' => {'tex' => '\363', 'web' => "\x{f3}"}, # o acute.
+ '(ocirc|#244)' => {'tex' => '\364', 'web' => "\x{f4}"}, # o circumflex.
+ '(otilde|#245)' => {'tex' => '\365', 'web' => "\x{f5}"}, # o tilde.
+ '(ouml|#246)' => {'tex' => '\366', 'web' => "\x{f6}"}, # o umlaut.
+ '(divide|#247)' => {'tex' => '\367', 'web' => "\x{f7}"}, # division symbol
+ '(oslash|#248)' => {'tex' => '\370', 'web' => "\x{f8}"}, # o slashed.
+ '(ugrave|#249)' => {'tex' => '\371', 'web' => "\x{f9}"}, # u accent grave.
+ '(uacute|#250)' => {'tex' => '\372', 'web' => "\x{fa}"}, # u acute.
+ '(ucirc|#251)' => {'tex' => '\373', 'web' => "\x{fb}"}, # u circumflex.
+ '(uuml|#252)' => {'tex' => '\374', 'web' => "\x{fc}"}, # u umlaut.
+ '(yacute|#253)' => {'tex' => '\375', 'web' => "\x{fd}"}, # y acute accent.
+ '(thorn|#254)' => {'tex' => '\376', 'web' => "\x{fe}"}, # small thorn (icelandic).
+ '(yuml|#255)' => {'tex' => '\377', 'web' => "\x{ff}"}, # y umlaut.
+
+ # Latin extended A entities:
+
+ '(OElig|#338)' => {'tex' => '{/Text \326}', 'web' => "\x{152}"}, # OE ligature.
+ '(oelig|#339)' => {'tex' => '{/Text \366}', 'web' => "\x{153}"}, # oe ligature.
+ '(Scaron|#352)' => {'tex' => 'S', 'web' => "\x{160}"}, # S caron no printable.
+ '(scaron|#353)' => {'tex' => 's', 'web' => "\x{161}"}, # s caron no printable.
+ '(Yuml|#376)' => {'tex' => 'Y', 'web' => "\x{178}"}, # Y umlaut - no printable.
+
+ # Latin extended B.
+
+ '(fnof|#402)' => {'tex' =>'{/Symbol \246}', 'web' => "\x{192}"}, # f with little hook.
+
+ # Standalone accents:
+
+ '(circ|#710)' => {'tex' => '^', 'web' => '^'}, # circumflex.
+ '(tilde|#732)' => {'tex' => '~', 'web' => '~'}, # tilde.
+
+ # General punctuation. We're not able to make a distinction between
+ # the various length spacings in the print version. (e.g. en/em/thin).
+ # the various joiners will be empty strings in the print version too.
+
+
+ '(ensp|#8194)' => {'tex' => ' ', 'web' => "\x{2002}"}, # en space.
+ '(emsp|#8195)' => {'tex' => ' ', 'web' => "\x{2003}"}, # em space.
+ '(thinsp|#8201)' => {'tex' => ' ', 'web' => "\x{2009}"}, # thin space.
+ '(zwnj|#8204)' => {'tex' => ' ', 'web' => "\x{200c}"}, # Zero width non joiner.
+ '(zwj|#8205)' => {'tex' => ' ', 'web' => "\x{200d}"}, # Zero width joiner.
+ '(lrm|#8206)' => {'tex' => ' ', 'web' => "\x{200e}"}, # Left to right mark
+ '(rlm|#8207)' => {'tex' => ' ', 'web' => "\x{200f}"}, # right to left mark.
+ '(ndash|#8211)' => {'tex' => '{/Text \55}', 'web' => "\x{2013}"}, # en dash.
+ '(mdash|#8212)' => {'tex' => '{/Symbol \55}', 'web' => "\x{2014}"}, # em dash.
+ '(lsquo|#8216)' => {'tex' => '{/Text \140}', 'web' => "\x{2018}"}, # Left single quote.
+ '(rsquo|#8217)' => {'tex' => '\47', 'web' => "\x{2019}"}, # Right single quote.
+ '(sbquo|#8218)' => {'tex' => '\54', 'web' => "\x{201a}"}, # Single low-9 quote.
+ '(ldquo|#8220)' => {'tex' => '\42', 'web' => "\x{201c}"}, # Left double quote.
+ '(rdquo|#8221)' => {'tex' => '\42', 'web' => "\x{201d}"}, # Right double quote.
+ '(bdquo|#8222)' => {'tex' => ',', 'web' => "\x{201e}"}, # Double low-9 quote.
+ '(dagger|#8224)' => {'tex' => '+', 'web' => "\x{2020}"}, # Is this a dagger I see before me now?
+ '(Dagger|#8225)' => {'tex' => '\261', 'web' => "\x{2021}"}, # it's handle pointing towards my heart?
+ '(bull|#8226)' => {'tex' => '\267', 'web' => "\x{2022}"}, # Bullet.
+ '(hellep|#8230)' => {'tex' => '{/Symbol \274}', 'web' => "\x{2026}"}, # Ellipses.
+ '(permil|#8240)' => {'tex' => '%_o', 'web' => "\x{2031}"}, # Per mille.
+ '(prime|#8242)' => {'tex' => '\264', 'web' => "\x{2032}"}, # Prime.
+ '(Prime|#8243)' => {'tex' => '{/Symbol \262}', 'web' => "\x{2033}"}, # double prime.
+ '(lsaquo|#8249)' => {'tex' => '<', 'web' => "\x{2039}"}, # < quote.
+ '(rsaquo|#8250)' => {'tex' => '\74', 'web' => "\x{203a}"}, # > quote.
+ '(oline|#8254)' => {'tex' => '{/Symbol \140}', 'web' => "\x{203e}"}, # Overline.
+ '(frasl|#8260)' => {'tex' => '/', 'web' => "\x{2044}"}, # Fraction slash.
+ '(euro|#8364)' => {'tex' => '{/Symbol \240}', 'web' => "\x{20ac}"}, # Euro currency.
+
+ # Letter like symbols.
+
+ '(weierp|#8472)' => {'tex' => '{/Symbol \303}', 'web' => "\x{2118}"}, # Power set symbol
+ '(image|#8465)' => {'tex' => '{/Symbol \301}', 'web' => "\x{2111}"}, # Imaginary part
+ '(real|#8476)' => {'tex' => '{/Symbol \302}', 'web' => "\x{211c}"}, # Real part.
+ '(trade|#8482)' => {'tex' => '{/Symbol \344}', 'web' => "\x{2122}"}, # trademark symbol.
+ '(alefsym|#8501)' => {'tex' => '{/Symbol \300}', 'web' => "\x{2135}"}, # Hebrew alef.
+
+ # Arrows of various types and directions.
+ '(larr|#8592)' => {'tex' => '{/Symbol \254}', 'web' => "\x{2190}"}, # <--
+ '(uarr|#8593)' => {'tex' => '{/Symbol \255}', 'web' => "\x{2191}"}, # up arrow.
+ '(rarr|#8594)' => {'tex' => '{/Symbol \256}', 'web' => "\x{2192}"}, # -->
+ '(darr|#8595)' => {'tex' => '{/Symbol \257}', 'web' => "\x{2193}"}, # down arrow.
+ '(harr|#8596)' => {'tex' => '{/Symbol \253}', 'web' => "\x{2194}"}, # <-->
+ '(crarr|#8629)' => {'tex' => '{/Symbol \277}', 'web' => "\x{21b5}"}, # corner arrow down and right.
+ '(lArr|#8656)' => {'tex' => '{/Symbol \334}', 'web' => "\x{21d0}"}, # <==
+ '(uArr|#8657)' => {'tex' => '{/Symbol \335}', 'web' => "\x{21d1}"}, # Up double arrow.
+ '(rArr|#8658)' => {'tex' => '{/Symbol \336}', 'web' => "\x{21d2}"}, # ==>
+ '(dArr|#8659)' => {'tex' => '{/Symbol \337}', 'web' => "\x{21d3}"}, # Down double arrow.
+ '(hArr|#8660)' => {'tex' => '{/Symbol \333}', 'web' => "\x{21d4}"}, # <==>
+
+ # Mathematical operators. For some of these we do the best we can in printing.
+
+ '(forall|#8704)' => {'tex' => '{/Symbol \42}', 'web' => "\x{2200}"}, # For all.
+ '(part|#8706)' => {'tex' => '{/Symbol d}', 'web' => "\x{2202}"}, # partial derivative
+ '(exist|#8707)' => {'tex' => '{/Symbol \44}', 'web' => "\x{2203}"}, # There exists.
+ '(empty|#8709)' => {'tex' => '{/Symbol \306}', 'web' => "\x{2205}"}, # Null set.
+ '(nabla|#8711)' => {'tex' => '{/Symbol \321}', 'web' => "\x{2207}"}, # Gradient e.g.
+ '(isin|#8712)' => {'tex' => '{/Symbol \316}', 'web' => "\x{2208}"}, # Element of the set.
+ '(notin|#8713)' => {'tex' => '{/Symbol \317}', 'web' => "\x{2209}"}, # Not an element of
+ '(ni|#8715)' => {'tex' => '{/Symbol \47}', 'web' => "\x{220b}"}, # Contains as a member
+ '(prod|#8719)' => {'tex' => '{/Symbol \325}', 'web' => "\x{220f}"}, # Product
+ '(sum|#8721)' => {'tex' => '{/Symbol \345}', 'web' => "\x{2211}"}, # Sum of.
+ '(minus|#8722)' => {'tex' => '{/Symbol \55}', 'web' => "\x{2212}"}, # - sign.
+ '(lowast|#8727)' => {'tex' => '*', 'web' => "\x{2217}"}, # *
+ '(radic|#8730)' => {'tex' => '{/Symbol \326}', 'web' => "\x{221a}"}, # Square root.
+ '(prop|#8733)' => {'tex' => '{/Symbol \265}', 'web' => "\x{221d}"}, # Proportional to.
+ '(infin|#8734)' => {'tex' => '{/Symbol \245}', 'web' => "\x{221e}"}, # Infinity.
+ '(ang|#8736)' => {'tex' => '{/Symbol \320}', 'web' => "\x{2220}"}, # Angle .
+ '(and|#8743)' => {'tex' => '{/Symbol \331}', 'web' => "\x{2227}"}, # Logical and.
+ '(or|#8744)' => {'tex' => '{/Symbol \332}', 'web' => "\x{2228}"}, # Logical or.
+ '(cap|#8745)' => {'tex' => '{/Symbol \307}', 'web' => "\x{2229}"}, # Set intersection.
+ '(cup|#8746)' => {'tex' => '{/Symbol \310}', 'web' => "\x{222a}"}, # Set union.
+ '(int|8747)' => {'tex' => '{/Symbol \362}', 'web' => "\x{222b}"}, # Integral.
+
+ # Some gnuplot guru will have to explain to me why the next three
+ # require the extra slashes... else they print very funkily.
+
+ '(there4|#8756)' => {'tex' => '{/Symbol \\\134}', 'web' => "\x{2234}"}, # Therefore triple dots.
+ '(sim|#8764)' => {'tex' => '\\\176', 'web' => "\x{223c}"}, # Simlar to.
+ '(cong|#8773)' => {'tex' => '{/Symbol \\\100}','web' => "\x{2245}"}, # Congruent to/with.
+
+ '(asymp|#8776)' => {'tex' => '{/Symbol \273}', 'web' => "\x{2248}"}, # Asymptotic to.
+ '(ne|#8800)' => {'tex' => '{/Symbol \271}', 'web' => "\x{2260}"}, # not equal to.
+ '(equiv|#8801)' => {'tex' => '{/Symbol \272}', 'web' => "\x{2261}"}, # Equivalent to.
+ '(le|8804)' => {'tex' => '{/Symbol \243}', 'web' => "\x{2264}"}, # Less than or equal to.
+ '(ge|8805)' => {'tex' => '{/Symbol \263}', 'web' => "\x{2265}"}, # Greater than or equal to
+ '(sub|8834)' => {'tex' => '{/Symbol \314}', 'web' => "\x{2282}"}, # Subset of.
+ '(sup|8835)' => {'tex' => '{/Symbol \311}', 'web' => "\x{2283}"}, # Super set of.
+ '(nsub|8836)' => {'tex' => '{/Symbol \313}', 'web' => "\x{2284}"}, # not subset of.
+ '(sube|8838)' => {'tex' => '{/Symbol \315}', 'web' => "\x{2286}"}, # Subset or equal.
+ '(supe|8839)' => {'tex' => '{/Symbol \312}', 'web' => "\x{2287}"}, # Superset or equal
+ '(oplus|8853)' => {'tex' => '{/Symbol \305}', 'web' => "\x{2295}"}, # O with plus inside
+ '(otimes|8855)' => {'tex' => '{/Symbol \304}', 'web' => "\x{2297}"}, # O with times.
+ '(perp|8869)' => {'tex' => '{/Symbol \136}', 'web' => "\x{22a5}"}, # Perpendicular.
+ '(sdot|8901)' => {'tex' => '{/Symbol \227}', 'web' => "\x{22c5}"}, # Dot operator.
+
+ # Misc. technical symbols:
+
+ '(lceil|8698)' => {'tex' => '{/Symbol \351}', 'web' => "\x{2308}"}, # Left ceiling.
+ '(rceil|8969)' => {'tex' => '{/Symbol \371}', 'web' => "\x{2309}"}, # Right ceiling.
+ '(lfloor|8970)' => {'tex' => '{/Symbol \353}', 'web' => "\x{230a}"}, # Left floor.
+ '(rfloor|8971)' => {'tex' => '{/Symbol \373}', 'web' => "\x{230b}"}, # Right floor.
+
+ # The gnuplot png font evidently does not have the big angle brackets at
+ # positions 0x2329, 0x232a so use ordinary brackets.
+
+ '(lang|9001)' => {'tex' => '{/Symbol \341}', 'web' => '<'}, # Left angle bracket.
+ '(rang|9002)' => {'tex' => '{/Symbol \361}', 'web' => '>'}, # Right angle bracket.
+
+ # Gemoetric shapes.
+
+ '(loz|9674)' => {'tex' => '{/Symbol \340}', 'web' => "\x{25ca}"}, # Lozenge.
+
+ # Misc. symbols
+
+ '(spades|9824)' => {'tex' => '{/Symbol \252}', 'web' => "\x{2660}"},
+ '(clubs|9827)' => {'tex' => '{/Symbol \247}', 'web' => "\x{2663}"},
+ '(hearts|9829)' => {'tex' => '{/Symbol \251}', 'web' => "\x{2665}"},
+ '(diams|9830)' => {'tex' => '{/Symbol \250}', 'web' => "\x{2666}"}
+
);
@@ -876,6 +1329,7 @@ sub replace_entities {
my ($target,$text) = @_;
$text =~ s{([_^~\{\}]|\\\\)}{\\\\$1}g;
while (my ($re, $replace) = each(%lookup)) {
+ my $repl = $replace->{$target};
$text =~ s/&$re;/$replace->{$target}/g;
}
$text =~ s{(&)}{\\\\$1}g;
@@ -1042,6 +1496,13 @@ sub start_curve {
my $constructtag=&Apache::edit::get_new_args
($token,$parstack,$safeeval,keys(%curve_defaults));
if ($constructtag) {
+ #
+ # Fix up the color attribute as jcolor does not prepend an x
+ #
+ my $value = $token->[2]{'color'};
+ if (defined $value && !($value =~ /^x/)) {
+ $token->[2]{'color'} = 'x' . $value;
+ }
$result = &Apache::edit::rebuild_tag($token);
}
}
@@ -1076,6 +1537,9 @@ sub start_function {
my $function = &Apache::lonxml::get_all_text("/function",$parser,
$style);
$function = &Apache::run::evaluate($function,$safeeval,$$parstack[-1]);
+ $function=~s/\^/\*\*/gs;
+ $function=~ s/^\s+//; # Trim leading
+ $function=~ s/\s+$//; # And trailing whitespace.
$curves[-1]->{'function'} = $function;
} elsif ($target eq 'edit') {
$result .= &Apache::edit::tag_start($target,$token,'Gnuplot compatible curve function');
@@ -1146,7 +1610,7 @@ sub start_data {
}
# complain if the number of data points is not the same as
# in previous sets of data.
- if (($curves[-1]->{'data'}) && ($#data != $#{@{$curves[-1]->{'data'}->[0]}})){
+ 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');
@@ -1187,7 +1651,17 @@ sub start_axis {
} elsif ($target eq 'modified') {
my $constructtag=&Apache::edit::get_new_args
($token,$parstack,$safeeval,keys(%axis_defaults));
+
if ($constructtag) {
+ #
+ # Fix up the color attribute since jchooser does not
+ # prepend an x to the color:
+ #
+ my $value = $token->[2]{'color'};
+ if (defined $value && !($value =~ /^x/)) {
+ $token->[2]{'color'} = 'x' . $value;
+ }
+
$result = &Apache::edit::rebuild_tag($token);
}
}
@@ -1245,6 +1719,65 @@ sub get_attributes{
}
return ;
}
+##
+# Generate tic mark specifications.
+#
+# @param type - type of tics (xtics or ytics).
+# @param spec - Reference to a hash that contains the tic specification.
+# @param target - 'tex' if hard copy target.
+#
+# @return string - the tic specification command.
+#
+sub generate_tics {
+ my ($type, $spec, $target) = @_;
+ my $result = '';
+
+
+ if ((ref($spec) eq 'HASH') && (keys(%{$spec}) > 0)) {
+
+
+
+ # Major tics: - If there are 'ticspecs' these override any other
+ # specifications:
+
+
+
+ $result .= "set $type $spec->{'location'} ";
+ $result .= ($spec->{'mirror'} eq 'on') ? 'mirror ' : 'nomirror ';
+ if ($spec->{'rotate'} eq 'on') {
+ $result .= ' rotate ';
+ }
+ if (defined $spec->{'ticspecs'}) {
+ $result .= '( ';
+ my @ticspecs;
+ my $ticinfo = $spec->{'ticspecs'};
+ foreach my $tic (@$ticinfo) {
+ push(@ticspecs, '"' . $tic->{'label'} . '" ' . $tic->{'pos'} );
+ }
+ $result .= join(', ', (@ticspecs));
+ $result .= ' )';
+ } else {
+ $result .= "$spec->{'start'}, ";
+ $result .= "$spec->{'increment'}, ";
+ $result .= "$spec->{'end'} ";
+ }
+ if ($target eq 'tex' ) {
+ $result .= 'font "Helvetica,22"';
+ }
+ $result .= "\n";
+
+ # minor frequency:
+
+ if ($spec->{'minorfreq'} != 0) {
+ $result .= "set m$type $spec->{'minorfreq'}\n";
+ }
+ } elsif ($target eq 'tex' ) {
+ $result .= "set $type font " . '"Helvetica,22"' ."\n";
+ }
+
+
+ return $result;
+}
##------------------------------------------------------- write_gnuplot_file
sub write_gnuplot_file {
@@ -1280,6 +1813,7 @@ sub write_gnuplot_file {
$curve->{'color'} :
$Apache::lonplot::plot{'fgcolor'} );
}
+
# set term
if ($target eq 'web') {
$gnuplot_input .= 'set terminal png enhanced nocrop ';
@@ -1292,7 +1826,7 @@ sub write_gnuplot_file {
# set output
$gnuplot_input .= "set output\n";
} elsif ($target eq 'tex') {
- $gnuplot_input .= "set term postscript eps enhanced $Apache::lonplot::plot{'plotcolor'} solid ";
+ $gnuplot_input .= "set term postscript eps enhanced $Apache::lonplot::plot{'plotcolor'} dash ";
if (!$font_properties->{'tex_no_file'}) {
$gnuplot_input .=
'fontfile "'.$Apache::lonnet::perlvar{'lonFontsDir'}.
@@ -1300,9 +1834,12 @@ sub write_gnuplot_file {
}
$gnuplot_input .= ' "'.$font_properties->{'printname'}.'" ';
$gnuplot_input .= $fontsize;
- $gnuplot_input .= "\nset output \"/home/httpd/perl/tmp/".
+ $gnuplot_input .= "\nset output \"".$tmpdir.
&unescape($filename).".eps\"\n";
+ $gnuplot_input .= "set encoding iso_8859_1\n"; # Get access to extended font.
+
}
+ $gnuplot_input .= "set encoding utf8\n";
# cartesian or polar plot?
if (lc($Apache::lonplot::plot{'plottype'}) eq 'polar') {
$gnuplot_input .= 'set polar'.$/;
@@ -1370,8 +1907,8 @@ sub write_gnuplot_file {
$gnuplot_input .= "set samples $Apache::lonplot::plot{'samples'}\n";
# title, xlabel, ylabel
# titles
- my $extra_space_x = ($xtics{'location'} eq 'axis') ? ' 0, -0.5 ' : '';
- my $extra_space_y = ($ytics{'location'} eq 'axis') ? ' -0.5, 0 ' : '';
+ my $extra_space_x = ($xtics{'location'} eq 'axis') ? ' offset 0, -0.5 ' : '';
+ my $extra_space_y = ($ytics{'location'} eq 'axis') ? ' offset -0.5, 0 ' : '';
if ($target eq 'tex') {
$gnuplot_input .= "set title \"$title\" font \"".$font_properties->{'printname'}.",".$fontsize."pt\"\n" if (defined($title)) ;
@@ -1383,26 +1920,10 @@ sub write_gnuplot_file {
$gnuplot_input .= "set ylabel \"$ylabel\" $extra_space_y \n" if (defined($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";
- }
- }
+ $gnuplot_input .= &generate_tics('xtics', \%xtics, $target);
+
+ $gnuplot_input .= &generate_tics('ytics', \%ytics, $target);
+
# axis
if (%axis) {
if ($axis{'xformat'} ne 'on') {
@@ -1423,6 +1944,26 @@ sub write_gnuplot_file {
}
$gnuplot_input .= "set xrange \[$axis{'xmin'}:$axis{'xmax'}\]\n";
$gnuplot_input .= "set yrange \[$axis{'ymin'}:$axis{'ymax'}\]\n";
+ if ($axis{'xzero'} ne 'off') {
+ $gnuplot_input .= "set xzeroaxis ";
+ if ($axis{'xzero'} eq 'line' || $axis{'xzero'} eq 'thick-line') {
+ $gnuplot_input .= "lt -1 ";
+ if ($axis{'xzero'} eq 'thick-line') {
+ $gnuplot_input .= "lw 3 ";
+ }
+ }
+ $gnuplot_input .= "\n";
+ }
+ if ($axis{'yzero'} ne 'off') {
+ $gnuplot_input .= "set yzeroaxis ";
+ if ($axis{'yzero'} eq 'line' || $axis{'yzero'} eq 'thick-line') {
+ $gnuplot_input .= "lt -1 ";
+ if ($axis{'yzero'} eq 'thick-line') {
+ $gnuplot_input .= "lw 3 ";
+ }
+ }
+ $gnuplot_input .= "\n";
+ }
}
# Key
if (%key) {
@@ -1445,7 +1986,10 @@ sub write_gnuplot_file {
$gnuplot_input .= ' '.$label->{'justify'};
if ($target eq 'tex') {
- $gnuplot_input .=' font "'.$font_properties->{'printname'}.','.$fontsize.'pt"' ;
+ $gnuplot_input .=' font "'.$font_properties->{'printname'}.','.$fontsize.'pt"';
+ }
+ if (($label->{'zlayer'} eq 'front') || ($label->{'zlayer'} eq 'back')) {
+ $gnuplot_input .= ' '.$label->{'zlayer'};
}
$gnuplot_input .= $/;
}
@@ -1454,40 +1998,37 @@ sub write_gnuplot_file {
$gnuplot_input .="\n";
}
# curves
- $gnuplot_input .= 'plot ';
+ #
+ # Each curve will have its very own linestyle.
+ # (This should work just fine in web rendition I think).
+ # The line_xxx variables will hold the elements of the line style.
+ # type (solid/dashed), color, width
+ #
+ my $linestyle_index = 50;
+ my $line_width = '';
+ my $plots = '';
+
+ # If arrows are needed there will be an arrow style for each as well:
+ #
+
+ my $arrow_style_index = 50;
+
for (my $i = 0;$i<=$#curves;$i++) {
$curve = $curves[$i];
- $gnuplot_input.= ', ' if ($i > 0);
+ my $plot_command = '';
+ my $plot_type = '';
+ if ($i > 0) {
+ $plot_type = ', ';
+ }
if ($target eq 'tex') {
$curve->{'linewidth'} *= 2;
}
+ $line_width = $curve->{'linewidth'};
if (exists($curve->{'function'})) {
- $gnuplot_input.=
+ $plot_type .=
$curve->{'function'}.' 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'};
- } elsif ($curve->{'linestyle'} eq 'filledcurves') {
- $gnuplot_input.= ' '.$curve->{'limit'};
- } elsif ($curve->{'linetype'} ne '' &&
- $curve->{'linestyle'} eq 'lines') {
- $gnuplot_input.= ' linetype ';
- $gnuplot_input.= $linetypes{$curve->{'linetype'}};
- $gnuplot_input.= ' linecolor rgb "';
- # convert color from xaaaaaa to #aaaaaa
- $curve->{'color'} =~ s/x/#/;
- $gnuplot_input.= $curve->{'color'}.'"';
- }
- $gnuplot_input.= ' linewidth '.$curve->{'linewidth'};
-
} elsif (exists($curve->{'data'})) {
# Store data values in $datatext
my $datatext = '';
@@ -1508,34 +2049,77 @@ sub write_gnuplot_file {
print $fh $datatext;
close($fh);
# generate gnuplot text
- $gnuplot_input.= '"'.$datafilename.'" title "'.
+ $plot_type .= '"'.$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'};
- } elsif ($curve->{'linestyle'} eq 'filledcurves') {
- $gnuplot_input.= ' '.$curve->{'limit'};
- } elsif ($curve->{'linetype'} ne '' &&
- $curve->{'linestyle'} eq 'lines') {
- $gnuplot_input.= ' linetype ';
- $gnuplot_input.= $linetypes{$curve->{'linetype'}};
- $gnuplot_input.= ' linecolor rgb "';
- # convert color from xaaaaaa to #aaaaaa
- $curve->{'color'} =~ s/x/#/;
- $gnuplot_input.= $curve->{'color'}.'"';
- }
- $gnuplot_input.= ' linewidth '.$curve->{'linewidth'};
}
+ my $pointtype = '';
+ my $pointsize = '';
+
+ # Figure out the linestyle:
+
+ my $lt = $curve->{'linetype'} ne '' ? $curve->{'linetype'}
+ : 'solid'; # Line type defaults to solid.
+ # The mapping of lt -> the actual gnuplot line type depends on the target:
+
+ if ($target eq 'tex') {
+ $lt = $ps_linetypes{$lt};
+ } else {
+ $lt = $linetypes{$lt}
+ }
+
+ my $color = $curve->{'color'};
+ $color =~ s/^x/#/; # Convert xhex color -> #hex color.
+
+
+ if (($curve->{'linestyle'} eq 'points') ||
+ ($curve->{'linestyle'} eq 'linespoints') ||
+ ($curve->{'linestyle'} eq 'errorbars') ||
+ ($curve->{'linestyle'} eq 'xerrorbars') ||
+ ($curve->{'linestyle'} eq 'yerrorbars') ||
+ ($curve->{'linestyle'} eq 'xyerrorbars')) {
+
+ $pointtype =' pointtype '.$curve->{'pointtype'};
+ $pointsize =' pointsize '.$curve->{'pointsize'};
+ } elsif ($curve->{'linestyle'} eq 'filledcurves') {
+ $plot_command.= ' '.$curve->{'limit'};
+ } elsif ($curve->{'linestyle'} eq 'vector') {
+
+ # Create the arrow head style add it to
+ # $gnuplot_input..and ensure it gets
+ # Selected in the plot command.
+
+ $gnuplot_input .= "set style arrow $arrow_style_index ";
+ $gnuplot_input .= ' ' . $curve->{'arrowhead'};
+ $gnuplot_input .= ' size ' . $curve->{'arrowlength'};
+ $gnuplot_input .= ','.$curve->{'arrowangle'};
+ $gnuplot_input .= ',' . $curve->{'arrowbackangle'};
+ $gnuplot_input .= ' ' . $curve->{'arrowstyle'} . " ls $linestyle_index\n";
+
+
+ $plot_command .= " arrowstyle $arrow_style_index ";
+ $arrow_style_index++;
+ }
+
+ my $style_command = "set style line $linestyle_index $pointtype $pointsize linetype $lt linewidth $line_width lc rgb '$color'\n";
+ $gnuplot_input .= $style_command;
+
+ # The condition below is because gnuplot lumps the linestyle in with the
+ # arrowstyle _sigh_.
+
+ if ($curve->{'linestyle'} ne 'vector') {
+ $plot_command.= " ls $linestyle_index";
+ }
+
+ $plots .= $plot_type . ' ' . $plot_command;
+ $linestyle_index++; # Each curve get a unique linestyle.
}
+ $gnuplot_input .= 'plot '.$plots;
# Write the output to a file.
- open (my $fh,">$tmpdir$filename.data");
- binmode($fh, ":utf8");
+
+ # &Apache::lonnet::logthis($gnuplot_input); # uncomment to log the gnuplot input.
+ open (my $fh, "> $tmpdir$filename.data");
+ binmode($fh, ':utf8');
print $fh $gnuplot_input;
close($fh);
# That's all folks.
@@ -1582,7 +2166,8 @@ sub edit_attributes {
if ($defaults->{$attr}->{'edit_type'} eq 'entry') {
$result .= &Apache::edit::text_arg
($description,$attr,$token,
- $defaults->{$attr}->{'size'});
+ $defaults->{$attr}->{'size'},
+ $defaults->{$attr}->{'class'});
} elsif ($defaults->{$attr}->{'edit_type'} eq 'choice') {
$result .= &Apache::edit::select_or_text_arg
($description,$attr,$defaults->{$attr}->{'choices'},$token);
@@ -1711,3 +2296,118 @@ sub insert_data {
__END__
+=head1 NAME
+
+Apache::lonplot.pm
+
+=head1 SYNOPSIS
+
+XML-based plotter of graphs
+
+This is part of the LearningOnline Network with CAPA project
+described at http://www.lon-capa.org.
+
+
+=head1 SUBROUTINES (parsing and edit rendering)
+
+=over
+
+=item start_gnuplot()
+
+=item end_gnuplot()
+
+=item start_xtics()
+
+=item end_xtics()
+
+=item start_ytics()
+
+=item end_ytics()
+
+=item get_font()
+
+=item start_key()
+
+=item end_key()
+
+=item parse_label()
+
+=item replace_entities()
+
+=item start_title()
+
+=item end_title()
+
+=item start_xlabel()
+
+=item end_xlabel()
+
+=item start_ylabel()
+
+=item end_label()
+
+=item start_curve()
+
+=item end_curve()
+
+=item start_function()
+
+=item end_function()
+
+=item start_data()
+
+=item end_data()
+
+=item start_axis()
+
+=item end_axis
+
+=back
+
+=head1 SUBROUTINES (Utility)
+
+=over
+
+=item set_defaults()
+
+=item get_attributes()
+
+=item write_gnuplot_file()
+
+=item check_inputs()
+
+=item edit_attributes()
+
+=back
+
+=head1 SUBROUTINES (Insertion functions for editing plots)
+
+=over
+
+=item insert_gnuplot()
+
+=item insert_tics()
+
+=item insert_xtics()
+
+=item insert_key()
+
+=item insert_axis()
+
+=item insert_title()
+
+=item insert_xlabel()
+
+=item insert_ylabel()
+
+=item insert_label()
+
+=item insert_curve()
+
+=item insert_function()
+
+=item insert_data()
+
+=back
+
+=cut