Hi Monks, I am writing a CGI application which basically creates a graph and displays it to the screen. My subroutine to do this (sub plot_graph) does this fine. However, I want the graph to be written to a different file each time the CGI is run - i have tried to do this by inserting  $$ in the graph filename but it stops working as soon as I do this. Can anyone suggest why this is happening and/or give some other suggestions. Cheers 

plot_graph ();


 sub plot_graph   {

                 my ($temps, $numbers) = @_;


               #  my @graph_data = (\@temps, \@numbers);


my @graph_data = (
                   ["31768","25498", "21736", "17138", "9614", "6688",
+ "5016", "4180", "-2508", "-3762", "-5434", "-10450", "-12122", "-171
+38", "-20482", "-20900"],

[84.44, 68.55, 56.43, 39.71, 26.57, 15.05, 7.11, 1.93, -9.61, -17.56, 
+-22.15, -34.69, -40.96, -48.91, -63.95, -71.04]

           );

                    my $graph = GD::Graph::lines ->new (600,600);

                    $graph->set(
                             x_label => 'Temp',
                             y_label => 'Fluor',
                             x_max_value =>100
                    ) or die $graph->error;

                    $graph->set (dclrs=> [qw(green red blue)]);

                    my $gb = $graph->plot(\@graph_data) or die $graph-
+>error;
                    open (IMG , '>out.png') or die $!;
                    binmode IMG;
                    print IMG $gb->png;
                    close IMG;

                    print qq(<img src=out.png>);


  }

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In reply to Automatically creating incremental file names by Anonymous Monk

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