--- loncom/xml/lonplot.pm 2008/05/26 10:38:52 1.141 +++ loncom/xml/lonplot.pm 2018/09/26 14:02:47 1.178 @@ -1,7 +1,7 @@ # The LearningOnline Network with CAPA # Dynamic plot # -# $Id: lonplot.pm,v 1.141 2008/05/26 10:38:52 foxr Exp $ +# $Id: lonplot.pm,v 1.178 2018/09/26 14:02:47 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 => $color_test, description => 'Color of grid lines (x000000)', edit_type => 'entry', - size => '10' + size => '10', + class => 'colorchooser' }, xmin => { default => '-10.0', @@ -488,7 +525,7 @@ my %axis_defaults = }, xformat => { default => 'on', - test => sub {$_[0]=~/^(on|off|\d+(f|F|e|E))$/}, + test => sub {$_[0]=~/^(on|off|\d+(f|F|e|E|P))$/}, description => 'X-axis number formatting', edit_type => 'choice', choices => ['on', 'off', '2e', '2f'], @@ -496,14 +533,33 @@ my %axis_defaults = yformat => { default => 'on', test => sub {$_[0]=~/^(on|off|\d+(f|F|e|E))$/}, - description => 'X-axis number formatting', + description => 'Y-axis number formatting', edit_type => 'choice', choices => ['on', 'off', '2e', '2f'], }, - + + xzero => { + default => 'off', + test => sub {$_[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"; -$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 .= '
'. + "". + "
\n"; + + } else { + $result .= ""; + } } 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 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); @@ -819,6 +988,13 @@ 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 +# should be changed to print the correct glyphs rather than some +# approximation or fallback of what is intended. my %lookup = ( # Greek alphabet: @@ -888,31 +1064,31 @@ my %lookup = '#134' => {'tex' => '{/Text \262}', 'web' => "\x{2020}"}, '#135' => {'tex' => '{/Text \263}', 'web' => "\x{2021}"}, '#136' => {'tex' => '\\\\^', 'web' => '\\\\^'}, - '#137' => {'tex' => '{/Text \275}', 'web' => "\x{2030}"}, - '#138' => {'tex' => 'S', 'web' => "\x{160}"}, # no S-caron in ps fonts. + '#137' => {'tex' => '%o', 'web' => "\x{2030}"}, # Per Mille + '#138' => {'tex' => 'S', 'web' => "\x{160}"}, # S-Caron '#139' => {'tex' => '<', 'web' => '<'}, - '#140' => {'tex' => '{/Text \352}', 'web' => "\x{152}"}, + '#140' => {'tex' => 'AE', 'web' => "\x{152}"}, # AE ligature '#145' => {'tex' => '\140', 'web' => "\x{2018}"}, '#146' => {'tex' => '\47', 'web' => "\x{2019}"}, - '#147' => {'tex' => '{/Text \252}', 'web' => "\x{201c}"}, - '#148' => {'tex' => '{/Text \315}', 'web' => '\\"'}, + '#147' => {'tex' => '\140\140', 'web' => "\x{201c}"}, # Left " + '#148' => {'tex' => '\47\47', 'web' => '\\"'}, # Right " '#149' => {'tex' => '{/Symbol \267}', 'web' => "\x{2022}"}, - '#150' => {'tex' => '{/Text \55}', 'web' => "\x{2013}"}, #Untested here en dash + '#150' => {'tex' => '{/Text \55}', 'web' => "\x{2013}"}, # en dash '#151' => {'tex' => '{/Symbol \55}', 'web' => "\x{2014}"}, # em dash - '#152' => {'tex' => '~', 'web' => '~'}, - '#153' => {'tex' => '{/Text \324}', 'web' => "\x{2122}"}, # trademark + '#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 \372}', 'web' => "\x{153}"}, # oe ligature. - '#159', => {'tex' => 'Y', 'web' => "\x{178}"}, # Y-umlaut - can't print + '#156' => {'tex' => '{/Text \366}', 'web' => "\x{153}"}, # oe ligature. + '#159', => {'tex' => 'Y', 'web' => "\x{178}"}, # Y-umlaut - can't print '(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' => '{/Text \250}', 'web' => "\x{a4}"}, # Generic currency symb. + '(pound|#163)' => {'tex' => '{/Text \243}', 'web' => "\x{a3}"}, # GB Pound currency. + '(curren|#164)' => {'tex' => '{/ZapfDingbats \161}','web' => "\x{a4}"}, # Generic currency symb. '(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. @@ -921,20 +1097,20 @@ my %lookup = '(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' => '-', 'web' => "\x{ad}"}, # soft hyphen. + '(shy|#173)' => {'tex' => '\255', 'web' => "\x{ad}"}, # soft hyphen. '(reg|#174)' => {'tex' => '{/Symbol \342}', 'web' => "\x{ae}"}, # Registered tm. - '(macr|#175)' => {'tex' => '^{-}', 'web' => "\x{af}"}, # 'naked' macron (overbar). - '(deg|#176)' => {'tex' => '{/Text \312}', 'web' => "\x{b0}"}, # Degree symbo.. + '(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 \302}', 'web' => "\x{b4}"}, # 'naked' acute accent. + '(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' => '^.', 'web' => "\x{b7}"}, # middle dot (maybe text 267 is better)? + '(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' => '\353', 'web' => "\x{ba}"}, # masculine ordinal. + '(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. @@ -979,20 +1155,20 @@ my %lookup = '(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 + '(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. + '(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. + '(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 @@ -1007,15 +1183,15 @@ my %lookup = # Latin extended A entities: - '(OElig|#338)' => {'tex' => '{/Text \352}', 'web' => "\x{152}"}, # OE ligature. - '(oelig|#339)' => {'tex' => '{/Text \372}', 'web' => "\x{153}"}, # oe ligature. + '(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. + '(fnof|#402)' => {'tex' =>'{/Symbol \246}', 'web' => "\x{192}"}, # f with little hook. # Standalone accents: @@ -1030,30 +1206,30 @@ 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. @@ -1065,7 +1241,7 @@ my %lookup = # Arrows of various types and directions. '(larr|#8592)' => {'tex' => '{/Symbol \254}', 'web' => "\x{2190}"}, # <-- - '(uarr|#8593}' => {'tex' => '{/Symbol \255}', 'web' => "\x{2191}"}, # up arrow. + '(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}"}, # <--> @@ -1084,10 +1260,11 @@ 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. @@ -1098,10 +1275,15 @@ 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. @@ -1122,8 +1304,12 @@ 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. @@ -1310,6 +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); } } @@ -1344,6 +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,$token,'Gnuplot compatible curve function'); @@ -1414,7 +1610,7 @@ sub start_data { } # complain if the number of data points is not the same as # in previous sets of data. - if (($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'); @@ -1455,7 +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); } } @@ -1513,6 +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 { @@ -1548,6 +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 '; @@ -1560,7 +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'}. @@ -1568,9 +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') { $gnuplot_input .= 'set polar'.$/; @@ -1638,8 +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)) ; @@ -1651,26 +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') { @@ -1691,6 +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) { @@ -1713,7 +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 .= $/; } @@ -1722,40 +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 = ''; @@ -1776,34 +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. @@ -1850,7 +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); @@ -1979,3 +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