version 1.10, 2002/02/02 11:06:00
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version 1.21, 2003/03/26 21:52:37
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Line 29
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# YEAR=2001 |
# YEAR=2001 |
# 9/13/01, 9/25/01, 10/6/01, 10/9/01, 12/25/01 |
# 9/13/01, 9/25/01, 10/6/01, 10/9/01, 12/25/01 |
# YEAR=2002 |
# YEAR=2002 |
# 2/1/02 |
# 2/1/, 5/13, 5/15 |
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# YEAR=2003 |
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# 1/7/, 1/13 |
# A CGI script that dynamically outputs a graphical chart for lonstatistics. |
# A CGI script that dynamically outputs a graphical chart for lonstatistics. |
# |
# |
#### |
#### |
Line 39 use GD::Graph::bars;
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Line 41 use GD::Graph::bars;
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use GD::Graph::colour; |
use GD::Graph::colour; |
use GD::Graph::Data; |
use GD::Graph::Data; |
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sub unescape { |
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my $str=shift; |
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$str =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg; |
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return $str; |
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} |
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$|=1; # Autoflush after each print/write |
$|=1; # Autoflush after each print/write |
my ($cid, $Tag, $Max, $PNo, $data) = split(/&/,$ENV{'QUERY_STRING'}); |
my ($Titr,$xlab,$ylab,$Max,$PNo,$data1,$data2)=split(/&/,$ENV{'QUERY_STRING'}); |
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$Titr = &unescape($Titr); |
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$xlab = &unescape($xlab); |
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$ylab = &unescape($ylab); |
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my @data11=split(/\,/,$data1); |
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my @data12=split(/\,/,$data2); |
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my $skip_x = 1; |
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my $bar_space=10; |
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my @data1=split(/\,/,$data); |
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my @xlabels; |
my @xlabels; |
for (my $nIdx=0; $nIdx<$PNo; $nIdx++ ) { |
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$xlabels[$nIdx]=$nIdx+1; |
if ($Titr =~ /^Percentage$/){ |
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for (my $nIdx=0; $nIdx<$PNo; $nIdx++ ) { |
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$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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} |
} |
} |
my @data =(\@xlabels,\@data1); |
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my $Range; |
my @data =(\@xlabels,\@data11,\@data12); |
if ( $PNo > 10 ) {$Range = 30*$PNo;} |
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else { $Range = 400+30*$PNo; } |
my $width; |
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my $height = 200; |
if ( $Max > 1 ) { |
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$Max += (10 - $Max % 10); |
if ($xlab=~/^Concepts$/){ |
$Max = int($Max); |
$width=270; |
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} elsif ($xlab=~/^Problem\snumber$/){ |
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$width=450; |
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} else { |
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$width=($PNo==100) ? 800 : (120+$PNo*10); |
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$skip_x=5; |
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$bar_space=1; |
} |
} |
else { $Max = 1; } |
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my $MyGraph = GD::Graph::bars->new($Range, 400); |
my $x_tick_offset = 0; |
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if ($skip_x > 1) { |
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$x_tick_offset = $skip_x - 1; |
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} |
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my $MyGraph = GD::Graph::bars->new($width,$height); |
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$MyGraph->set( |
$MyGraph->set( |
x_label => 'Problems #', |
x_label => $xlab, |
y_label => $Tag, |
y_label => $ylab, |
title => 'LON-CAPA Graphical Chart, Course: '.$cid, |
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 => $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, |
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x_tick_offset => $x_tick_offset, |
# colors |
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dclrs => [ qw( green lblue lyellow lpurple cyan lorange)], |
dclrs => [ qw( lgreen dgreen lyellow lpurple cyan lorange)], |
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# shadows |
bar_spacing => $bar_space, |
bar_spacing => 4, |
cumulate => 2, |
shadow_depth => 1, |
zero_axis => 1, |
shadowclr => 'dred', |
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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, |
transparent => 0, |
) or warn $MyGraph->error; |
) or warn $MyGraph->error; |
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# Tell the server we are sending a gif graphic |
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# Tell the server we are sending a png graphic |
print <<END; |
print <<END; |
Content-type: image/gif |
Content-type: image/png |
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END |
END |
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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; |
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print $BinaryData; |