peppiv has asked for the wisdom of the Perl Monks concerning the following question:
#!/usr/local/bin/perl use GD; Context: "text/html\n\n"; # create a new image $im = new GD::Image(100,100); # allocate some colors $white = $im->colorAllocate(255,255,255); $black = $im->colorAllocate(0,0,0); $red = $im->colorAllocate(255,0,0); $blue = $im->colorAllocate(0,0,255); # make the background transparent and interlaced $im->transparent($white); $im->interlaced('true'); # Put a black frame around the picture $im->rectangle(0,0,99,99,$black); # Draw a blue oval $im->arc(50,50,95,75,0,360,$blue); # And fill it with red $im->fill(50,50,$red); # make sure we are writing to a binary stream binmode STDOUT; # Convert the image to PNG and print it on standard output print $im->png;
#!/usr/bin/perl use strict; use GD::Graph::bars; my @data = ( ["Jan-01","Feb-01","Mar-01", "Apr-01","May-01","Jun-01","Jul-01","Au +g-01","Sep-01"], [21,25,33,39,49,48,40,45,15] ); my $graph = new GD::Graph::bars; $graph->set( x_label => 'Month', y_label => 'Revenue ($1,000s)', title => 'Monthly Online Sales for 2001', bar_spacing => 10 ) or warn $graph->error; $graph->plot(\@data) or die $graph->error; open(GRAPH,">graph1.jpg") || die "Cannot open graph1.jpg: $!\n"; print GRAPH $graph->gd->jpeg(100);
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Re: GD malformed header error
by projekt21 (Friar) on Apr 04, 2002 at 14:08 UTC | |
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Re: GD malformed header error
by RMGir (Prior) on Apr 04, 2002 at 14:07 UTC |