Are you creating both graphs from the same $graph object ?. This code creates a new one for each plot

#!perl
use strict;
use GD::Graph::bars;

my @data1 = (['Windows', 'Linux', 'Solaris'], [150,250,350],[100,200,3
+00]); 
my @data2 = (['Windows', 'Linux', 'Solaris'], [100,200,300],[150,250,3
+50]); 

create_graph('file1.gif',\@data1);
create_graph('file2.gif',\@data2);

sub create_graph {

  my ($file,$data) = @_;
  my $graph = new GD::Graph::bars(900,600); 
  $graph->set(
  x_label => 'x_Label', 
  x_label_position => 1/4, 
  x_label_vertical => 1, 
  y_label => 'Minutes', 
  y_max_value => 700, 
  y_tick_number => 14, 
  title => 'Graph_Title '.$file, 
  bar_width => 35, 
  cumulate => 1, 
  dclrs => ['yellow', 'cyan'], 
  bgclr => 'white', 
  fgclr => 'lred', 
  values_vertical => 0, 
  valuesclr => 'black', 
  accentclr => 'red', 
  shadowclr => '#F7E7CE', 
  shadow_depth => 0, 
  legendclr => 'lblue', 
  show_values => 1); 

  # graph
  my $gd = $graph->plot($data) 
    or die $graph->error;  
  open IMG, '>',$file or die $!;
  binmode IMG;
  print IMG $gd->gif;
  close IMG;
}

[download]
poj

In reply to Re: perl bar graph by poj
in thread perl bar graph by poss

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.