version 1.22, 2003/10/08 15:44:49
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version 1.25, 2003/10/15 21:08:39
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Line 55 escape( value ) means the values must be
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Line 55 escape( value ) means the values must be
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=cut |
=cut |
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use strict; |
use strict; |
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use lib '/home/httpd/lib/perl'; |
use GD::Graph::bars; |
use GD::Graph::bars; |
use GD::Graph::colour; |
use GD::Graph::colour; |
use GD::Graph::Data; |
use GD::Graph::Data; |
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use LONCAPA::loncgi(); |
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sub unescape { |
sub unescape { |
my $str=shift; |
my $str=shift; |
Line 65 sub unescape {
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Line 67 sub unescape {
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return $str; |
return $str; |
} |
} |
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$|=1; # Autoflush after each print/write |
if (! &LONCAPA::loncgi::check_cookie_and_load_env()) { |
my ($Titr,$xlab,$ylab,$Max,$PNo,$data1,$data2)=split(/&/,$ENV{'QUERY_STRING'}); |
print <<END; |
$Titr = &unescape($Titr); |
Content-type: text/html |
$xlab = &unescape($xlab); |
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$ylab = &unescape($ylab); |
<html> |
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<head><title>Bad Cookie</title></head> |
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<body> |
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Your cookie information is incorrect. What\'s up with that? |
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</body> |
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</html> |
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END |
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return; |
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} |
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my @data11=split(/\,/,$data1); |
$|=1; # Autoflush after each print/write |
my @data12=split(/\,/,$data2); |
my $identifier = $ENV{'QUERY_STRING'}; |
my $skip_x = 1; |
my $Title = &unescape($ENV{$identifier.'.title'}); |
my $bar_space=10; |
my $xlabel = &unescape($ENV{$identifier.'.xlabel'}); |
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my $ylabel = &unescape($ENV{$identifier.'.ylabel'}); |
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my $Max = $ENV{$identifier.'.Max'}; |
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my $NumBars = $ENV{$identifier.'.NumBars'}; |
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my $NumSets = $ENV{$identifier.'.NumSets'}; |
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my @Colors = split(',',$ENV{$identifier.'.Colors'}); |
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# |
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# Labels are always digits |
my @xlabels; |
my @xlabels; |
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for (my $nIdx=0; $nIdx<$NumBars; $nIdx++ ) { |
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$xlabels[$nIdx]=$nIdx+1; |
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} |
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my @data; # stores the data for the graph |
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push(@data,\@xlabels); |
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for (my $i=1;$i<=$NumSets;$i++) { |
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push(@data,[split(',',$ENV{$identifier.'.data.'.$i})]); |
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} |
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if ($Titr =~ /^Percentage$/){ |
my $skip_x = 1; |
for (my $nIdx=0; $nIdx<$PNo; $nIdx++ ) { |
my $bar_width=10; |
$xlabels[$nIdx]=$nIdx; |
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} |
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@data11=(); |
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@data11=split(/\,/,$data2); |
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@data12=(); |
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$Titr = ''; |
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} else { |
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for (my $nIdx=0; $nIdx<$PNo; $nIdx++ ) { |
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$xlabels[$nIdx]=$nIdx+1; |
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} |
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} |
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my @data =(\@xlabels,\@data11,\@data12); |
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# |
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# Customize graph based on the |
my $width; |
my $width; |
my $height = 200; |
my $height = 200; |
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if ($xlab=~/^Concepts$/){ |
if ($NumBars < 10) { |
$width=270; |
$width = 120+$NumBars*15; |
} elsif ($xlab=~/^Problem\snumber$/){ |
$skip_x = 1; |
$width=450; |
$bar_width = 15; |
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} elsif ($NumBars <= 25) { |
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$width = 120+$NumBars*11; |
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$skip_x = 5; |
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$bar_width = 8; |
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} elsif ($NumBars <= 50) { |
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$width = 120+$NumBars*8; |
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$skip_x = 5; |
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$bar_width = 4; |
} else { |
} else { |
$width=($PNo==100) ? 800 : (120+$PNo*10); |
$width = 120+$NumBars*8; |
$skip_x=5; |
$skip_x = 5; |
$bar_space=1; |
$bar_width = 4; |
} |
} |
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my $x_tick_offset = 0; |
my $x_tick_offset = 0; |
Line 113 if ($skip_x > 1) {
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Line 135 if ($skip_x > 1) {
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} |
} |
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my $MyGraph = GD::Graph::bars->new($width,$height); |
my $MyGraph = GD::Graph::bars->new($width,$height); |
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my $error = ''; |
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if (! $MyGraph->set( x_label => $xlabel, |
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y_label => $ylabel, |
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x_label_position => 0.5, |
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long_ticks => 1, |
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tick_length => 0, |
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x_ticks => 0, |
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title => $Title, |
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y_max_value => $Max, |
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x_label_skip => $skip_x, |
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x_tick_offset => $x_tick_offset, |
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# |
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dclrs => \@Colors, |
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bar_width => $bar_width, |
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cumulate => 2, |
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zero_axis => 1, |
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fgclr => 'black', |
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boxclr => 'white', |
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accentclr => 'dblue', |
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valuesclr => '#ffff77', |
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l_margin => 10, |
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b_margin => 10, |
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r_margin => 10, |
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t_margin => 10, |
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# |
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transparent => 0, |
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)) { |
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$error = $MyGraph->error; |
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print <<"END"; |
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Content-type: text/html |
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<html> |
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<head><title>Bad Graph</title></head> |
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<body> |
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<p> |
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There was an error producing the graph you requested. |
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</p><p> |
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$error |
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</p> |
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</body> |
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</html> |
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END |
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return; |
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} |
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$MyGraph->set( |
my $plot = $MyGraph->plot(\@data); |
x_label => $xlab, |
if (! defined($plot)) { |
y_label => $ylab, |
print <<"END"; |
x_label_position => 0.5, |
Content-type: text/html |
long_ticks => 1, |
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tick_length => 0, |
<html> |
x_ticks => 0, |
<head><title>Bad Graph</title></head> |
title => $Titr, |
<body> |
y_max_value => $Max, |
The system was unable to create the graph you requested. |
# y_tick_number => $ytic, |
</body> |
y_label_skip => 5, |
</html> |
x_label_skip => $skip_x, |
END |
x_tick_offset => $x_tick_offset, |
return; |
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} |
dclrs => [ qw( lgreen dgreen lyellow lpurple cyan lorange)], |
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bar_spacing => $bar_space, |
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cumulate => 2, |
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zero_axis => 1, |
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# legend_placement => 'RT', |
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fgclr => 'black', |
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boxclr => 'white', |
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accentclr => 'dblue', |
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valuesclr => '#ffff77', |
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l_margin => 10, |
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b_margin => 10, |
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r_margin => 10, |
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t_margin => 10, |
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transparent => 0, |
my $BinaryData=$plot->png; |
) or warn $MyGraph->error; |
undef($MyGraph); |
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undef($plot); |
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if (! defined($BinaryData)) { |
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print <<"END"; |
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Content-type: text/html |
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<html> |
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<head><title>Bad Graph</title></head> |
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<body> |
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The system was unable to produce a png image of the graph you requested. |
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</body> |
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</html> |
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END |
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return; |
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} |
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# Tell the server we are sending a png graphic |
# Tell the server we are sending a png graphic |
Line 155 Content-type: image/png
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Line 220 Content-type: image/png
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END |
END |
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my $BinaryData=$MyGraph->plot(\@data)->png; |
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undef $MyGraph; |
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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 |