[Chicago-talk] GD::Graph

[matt boex]

ed,
 
sure.  it's pretty simple.  the data that i am importing from tempfile is the output of "uptime", 41,000 times.
 
matt
 
#!/usr/bin/perl -w
use GD::Graph::bars;
use GD::Graph::colour;
open (IN,"tempfile");
while (<IN>) {
  $_ =~ /load average: (.*?),/;
  $data = $1;
  push (@undefineme, "");
  push (@final, $data);
}
@data = ( 
    [@undefineme],
    [@final],
);
#y axis is top down.  x is bottom accross.
$my_graph = new GD::Graph::bars(1200,400);
$my_graph->set( 
        bgclr => "white",
        transparent => 0,
        x_label => 'Per 30 sec increments',
        y_label => 'load',
        title => "load",
        #y_max_value => 20,  default computs from dataset
        #y_tick_number => 5,
        #y_label_skip => 1,
        #x_labels_vertical => 1,
        fgclr => "green",
        # shadows
        #bar_spacing => 2,
        #shadow_depth => 4,
        #shadowclr => 'dred',
);
my $format = $my_graph->export_format;
open(IMG,">load.png") or die $!;
binmode IMG;
print IMG $my_graph->plot(\@data)->png;

Ed Summers <ehs at pobox.com> wrote:
On Wed, Mar 10, 2004 at 09:38:09AM -0800, matt boex wrote:
> Can't call method "png" on an undefined value ....

Can we see the code? While it's alot of data, I don't think GD::Graph should
have a problem with it.

//Ed
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