UPDATE: see comments

How about: 

my (@h,@c);
push @h, $_->{hour} foreach(@{$data});   # no so great
push @c, $_->{count} foreach(@{$data});  # see extremely's comment 
my $new = [ \@h, \@c ];

$gd = $graph->plot($new);                # wrong - see orbital's comme
+nt

[download]
I really tried to avoid the temp lists, maybe someone will come along and make this puppy scream with a nasty map block. ;) 

BEFORE:                          AFTER:
$VAR1 = [                        $VAR1 = [
          {                                [  
            'count' => 5,                     1,
            'hour' => 1                       5,
          },                                  2
          {                                ],
            'count' => 2,                  [
            'hour' => 5                       5,
          },                                  2,
          {                                   8
            'count' => 8,                  ]  
            'hour' => 2                  ];
          }
        ];

[download]
Data::Dumper - don't code anonymous data structures without it.

Jeff 

R-R-R--R-R-R--R-R-R--R-R-R--R-R-R--
L-L--L-L--L-L--L-L--L-L--L-L--L-L--

In reply to (jeffa) Re: Question about using hash indexes with GD::Graph by jeffa
in thread Question about using hash indexes with GD::Graph by vonman

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