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Re: Data labels for Chart::Points

by poj (Prior)
on Sep 11, 2013 at 16:28 UTC ( #1053522=note: print w/replies, xml ) Need Help??

in reply to Data labels for Chart::Points

You could use imagemap_dump together with GD, for example ;
#!perl use strict; use Data::Dump 'pp'; use Chart::Points; use GD; my $obj = Chart::Points->new ( 400,300 ); $obj->{'imagemap'}=1; my @labels = ('A','B','C'); $obj->set ('legend_labels' => \@labels); $obj->add_pt ('foo', 1,3,2); $obj->add_pt ('bar', 4,5,6); # create GD image my $img = GD::Image->new($obj->scalar_png); my $imagemap_data = $obj->imagemap_dump(); #pp $imagemap_data; # add labels my $black = $img->colorAllocate(0,0,0); for my $i (1..3){ for my $j (0..1){ my $text = $labels[$i-1]; my ($x,$y) = @{$imagemap_data->[$i][$j]}; $img->string(gdSmallFont,$x-10,$y-10,$text,$black); } } open (PNG,'>','chart.png') or die "$!"; binmode PNG; print PNG $img->png; close PNG;

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Re^2: Data labels for Chart::Points
by AndreaN (Novice) on Sep 14, 2013 at 17:02 UTC

    It works perfectly! Thanks a lot.

Re^2: Data labels for Chart::Points
by attiamx (Initiate) on Jun 22, 2014 at 12:11 UTC
    How can I do the same "print data labels" when I use 3d charts? Thanks
      Which chart module are you using ?
        use GD::3DBarGrapher qw(creategraph); Thank you
        Thank you very much. I cpan insalled HTML::Treebuilder however, when I run the script, I get Can't locate HTML/ in @INC (@INC contains. you do not need to debug this for me, I am just frustrated. I never have this difficulty installing a module before. I even hardcoded the path to the module and also moved the module tree around to known librarys. perl still does not want to pick it up. I will keep trying and let you know once I get back on track. Thanks

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