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Diff for /loncom/cgi/graph.png between versions 1.2 and 1.19

version 1.2, 2001/10/10 16:03:26 version 1.19, 2003/01/13 00:07:51
Line 1 Line 1
 #!/usr/bin/perl  #!/usr/bin/perl
 #  #
 # The LearningOnline Network with CAPA  # $Id$
 #  #
 # Behrouz Minaei  # Copyright Michigan State University Board of Trustees
 # 9/13/2001, 9/25/2001  #
 # 10/6/2001, 10,9,2001  # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
   #
   # LON-CAPA is free software; you can redistribute it and/or modify
   # it under the terms of the GNU General Public License as published by
   # the Free Software Foundation; either version 2 of the License, or
   # (at your option) any later version.
   #
   # LON-CAPA is distributed in the hope that it will be useful,
   # but WITHOUT ANY WARRANTY; without even the implied warranty of
   # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   # GNU General Public License for more details.
 #  #
   # You should have received a copy of the GNU General Public License
   # along with LON-CAPA; if not, write to the Free Software
   # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   #
   # /home/httpd/cgi-bin/graph.gif
   #
   # http://www.lon-capa.org/
   #
   # The LearningOnline Network with CAPA
   # Behrouz Minaei
   # YEAR=2001
   # 9/13/01, 9/25/01, 10/6/01, 10/9/01, 12/25/01
   # YEAR=2002
   # 2/1/, 5/13, 5/15
   # YEAR=2003
   # 1/7/
 # A CGI script that dynamically outputs a graphical chart for lonstatistics.  # A CGI script that dynamically outputs a graphical chart for lonstatistics.
   # 
   #### 
   
 use strict;  use strict;
 use GD::Graph::bars;  use GD::Graph::bars;
 use GD::Graph::colour;  use GD::Graph::colour;
 use GD::Graph::Data;  use GD::Graph::Data;
   
 my ($cid, $Tag, $Max, $PNo, $data) = split(/&/,$ENV{'QUERY_STRING'});  $|=1;   # Autoflush after each print/write
   my ($Titr,$xlab,$ylab,$Max,$PNo,$data1,$data2)=split(/&/,$ENV{'QUERY_STRING'});
   
   my @data11=split(/\,/,$data1);
   my @data12=split(/\,/,$data2);
   my $skip_x = 1;
   my $bar_space=10;
   
 my @data1=split(/\,/,$data);  
      
 my @xlabels;  my @xlabels;
 for (my $nIdx=0; $nIdx<$PNo; $nIdx++ ) {  
     $xlabels[$nIdx]=$nIdx+1;  if ($Titr =~ /^Percentage$/){
       for (my $nIdx=0; $nIdx<$PNo; $nIdx++ ) {
           $xlabels[$nIdx]=$nIdx;
       }
       @data11=();
       @data11=split(/\,/,$data2);
       @data12=();
       $Titr = '';
   } else {
        for (my $nIdx=0; $nIdx<$PNo; $nIdx++ ) {
            $xlabels[$nIdx]=$nIdx+1;
        }
 }   } 
 my @data =(\@xlabels,\@data1);  
   
 my $Range;  my @data =(\@xlabels,\@data11,\@data12);
 if ( $PNo > 10 ) {$Range = 30*$PNo;}  
 else { $Range = 300+30*$PNo; }  my $Range1;
   my $Range2;
   
 if ( $Max < 1 ) { $Max = 1; }  if ($xlab=~/^Concepts$/){
 elsif ( $Max < 10 ) { $Max = 10; }      $Range1=270;
 elsif ( $Max < 100 ) { $Max = 100; }      $Range2=200;
   } elsif ($xlab=~/^Problem_number$/){
       $Range1=450;
       $Range2=200;
   } else {
       $Range1=800;#*$PNo; 
       $Range2=200;
       $skip_x=5;
       $bar_space=1;
   }
   
 my $MyGraph = GD::Graph::bars->new($Range, 400);  
   my $MyGraph = GD::Graph::bars->new($Range1,$Range2);
   
 $MyGraph->set(   $MyGraph->set( 
     x_label         => 'Problems #',      x_label         => $xlab,
     y_label         => $Tag,      y_label         => $ylab,
     title           => 'LON-CAPA Graphical Chart, Course: '.$cid,      long_ticks      => 1,
       tick_length     => 0,
       x_ticks         => 0,
       title           => $Titr,
     y_max_value     => $Max,      y_max_value     => $Max,
     y_tick_number   => 10,  #    y_tick_number   => $ytic,
     y_label_skip    => 1,      y_label_skip    => 5,
     x_label_skip    => 2,      x_label_skip    => $skip_x,   
       
     # colors      dclrs           => [ qw( lgreen dgreen lyellow lpurple cyan lorange)],
     dclrs           => [ qw(green lblue lyellow lpurple cyan lorange)],  
           
     # shadows      bar_spacing     => $bar_space,
     bar_spacing     => 4,      cumulate        => 2,
     shadow_depth    => 1,      zero_axis        => 1,
     shadowclr       => 'dred',  
   #    legend_placement    => 'RT',
   
       fgclr               => 'black',
       boxclr              => 'white',
       accentclr           => 'dblue',
       valuesclr           => '#ffff77',
       l_margin            => 10,
       b_margin            => 10,
       r_margin            => 10,
       t_margin            => 10,
   
     transparent     => 0,      transparent     => 0,
 ) or warn $MyGraph->error;   ) or warn $MyGraph->error; 
   
 # Tell the server we are sending a gif graphic  
   # Tell the server we are sending a png graphic
 print <<END;  print <<END;
 Content-type: image/gif  Content-type: image/png
   
 END  END
   
 my $BinaryData=$MyGraph->plot(\@data)->png;  my $BinaryData=$MyGraph->plot(\@data)->png;
 undef $MyGraph;  undef $MyGraph;
 binmode(STDOUT);  binmode(STDOUT);
 open IMG,"|pngtopnm|ppmtogif 2>/dev/null"; # convert into a gif image  #open IMG,"|pngtopnm|ppmtogif 2>/dev/null"; # convert into a gif image
 print IMG $BinaryData; # output image  #print IMG $BinaryData; # output image
 $|=1; # be sure to flush before closing  #$|=1; # be sure to flush before closing
 close IMG;  #close IMG;
   print $BinaryData;
Removed from v.1.2  
changed lines
  Added in v.1.19

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