--- loncom/xml/lonplot.pm 2008/05/27 10:40:30 1.143
+++ loncom/xml/lonplot.pm 2009/01/30 03:20:10 1.151
@@ -1,7 +1,7 @@
# The LearningOnline Network with CAPA
# Dynamic plot
#
-# $Id: lonplot.pm,v 1.143 2008/05/27 10:40:30 foxr Exp $
+# $Id: lonplot.pm,v 1.151 2009/01/30 03:20:10 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:
##
@@ -88,6 +93,8 @@ BEGIN {
## ##
###################################################################
+=cut
+
my $max_str_len = 50; # if a label, title, xlabel, or ylabel text
# is longer than this, it will be truncated.
@@ -496,7 +503,7 @@ my %axis_defaults =
yformat => {
default => 'on',
test => sub {$_[0]=~/^(on|off|\d+(f|F|e|E))$/},
- description => 'X-axis number formatting',
+ description => 'Y-axis number formatting',
edit_type => 'choice',
choices => ['on', 'off', '2e', '2f'],
},
@@ -757,6 +764,7 @@ 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);
@@ -1037,30 +1045,30 @@ my %lookup =
'(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.
+ '(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' => '{/Symbol \242}', 'web' => "\x{2019}"}, # Right single quote.
- '(sbquo|#8218)' => {'tex' => ',', 'web' => "\x{201a}"}, # Single low-9 quote.
- '(ldquo|#8220)' => {'tex' => '{/Text \252}', 'web' => "\x{201c}"}, # Left double quote.
- '(rdquo|#8221)' => {'tex' => '{/Text \272}', 'web' => "\x{201d}"}, # Right double quote.
- '(bdquo|#8222)' => {'tex' => '{/Text \271}', 'web' => "\x{201e}"}, # Double low-9 quote.
- '(dagger|#8224)' => {'tex' => '{/Text \262}', 'web' => "\x{2020}"}, # Is this a dagger I see before me now?
- '(Dagger|#8225)' => {'tex' => '{/Text \263}', 'web' => "\x{2021}"}, # it's handle pointing towards my heart?
+ '(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' => '{/Text \274}', 'web' => "\x{2026}"}, # Ellipses.
- '(permil|#8240)' => {'tex' => '{/Text \275}', 'web' => "\x{2031}"}, # Per mille.
+ '(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' => '{/Text \254}', 'web' => "\x{2039}"}, # < quote.
- '(rsaquo|#8250)' => {'tex' => '{/Text \255}', 'web' => "\x{2040}"}, # > quote.
+ '(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{20a0}"}, # Euro currency.
+ '(euro|#8364)' => {'tex' => '{/Symbol \240}', 'web' => "\x{20ac}"}, # Euro currency.
# Letter like symbols.
@@ -1091,10 +1099,11 @@ my %lookup =
'(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' => '-', 'web' => "\x{2212}"}, # - sign.
+ '(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.
@@ -1105,10 +1114,15 @@ my %lookup =
'(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.
- '(there4|#8756)' => {'tex' => '{/Symbol \134}', 'web' => "\x{2234}"}, # Therefore triple dots.
- '(sim|#8764)' => {'tex' => '~', 'web' => "\x{223c}"}, # Simlar to.
- '(cong|#8773)' => {'tex' => '{/Symbol \100}', 'web' => "\x{2245}"}, # Congruent to/with.
- '(asymp|#8776)' => {'tex' => '{/Symbol \278}', 'web' => "\x{2248}"}, # Asymptotic to.
+
+ # 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.
@@ -1129,8 +1143,12 @@ my %lookup =
'(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.
- '(lang|9001)' => {'tex' => '{/Symbol \341}', 'web' => "\x{2329}"}, # Left angle bracket.
- '(rang|9002)' => {'tex' => '{/Symbol \361}', 'web' => "\x{232a}"}, # Right angle bracket.
+
+ # 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.
@@ -1351,6 +1369,7 @@ sub start_function {
my $function = &Apache::lonxml::get_all_text("/function",$parser,
$style);
$function = &Apache::run::evaluate($function,$safeeval,$$parstack[-1]);
+ $function=~s/\^/\*\*/gs;
$curves[-1]->{'function'} = $function;
} elsif ($target eq 'edit') {
$result .= &Apache::edit::tag_start($target,$token,'Gnuplot compatible curve function');
@@ -1421,7 +1440,7 @@ sub start_data {
}
# complain if the number of data points is not the same as
# in previous sets of data.
- if (($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');
@@ -1665,20 +1684,36 @@ sub write_gnuplot_file {
$gnuplot_input .= ( $xtics{'mirror'} eq 'on'?"mirror ":"nomirror ");
$gnuplot_input .= "$xtics{'start'}, ";
$gnuplot_input .= "$xtics{'increment'}, ";
- $gnuplot_input .= "$xtics{'end'}\n";
+ $gnuplot_input .= "$xtics{'end'} ";
+ if ($target eq 'tex') {
+ $gnuplot_input .= 'font "Helvetica,22"'; # Needed in iso 8859-1 enc.
+ }
+ $gnuplot_input .= "\n";
if ($xtics{'minorfreq'} != 0) {
$gnuplot_input .= "set mxtics ".$xtics{'minorfreq'}."\n";
}
+ } else {
+ if ($target eq 'tex') {
+ $gnuplot_input .= 'set xtics font "Helvetica,22"'."\n"; # needed in iso 8859-1 enc
+ }
}
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";
+ $gnuplot_input .= "$ytics{'end'} ";
+ if ($target eq 'tex') {
+ $gnuplot_input .= 'font "Helvetica,22"'; # Needed in iso-8859-1 encoding.
+ }
+ $gnuplot_input .= "\n";
if ($ytics{'minorfreq'} != 0) {
$gnuplot_input .= "set mytics ".$ytics{'minorfreq'}."\n";
}
+ } else {
+ if ($target eq 'tex') {
+ $gnuplot_input .= 'set ytics font "Helvetica,22"'."\n"; # Needed for iso 8859-1 enc.
+ }
}
# axis
if (%axis) {
@@ -1988,3 +2023,118 @@ 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