Re: GD::Graph vertical line

[Albannach]

A slightly different ugly hack, in an attempt to make more use of what GD::Graph provides:

my $chosen_x = ($graph->GD::Graph::axestype::val_to_pixel(5,0,1))[0]; 
+# only the 5 matters here
my @ys = @{$graph->get_feature_coordinates('axes')}[2,4]; # the y coor
+ds of the chart box
$graph->{graph}->line($chosen_x, $ys[0], $chosen_x, $ys[1], 8); # 8 is
+ black, or you could colorAllocate() something

In my test it seems to line up the vertical better than in tachyon's example, but there may be other reasons for that too. The val_to_pixel() subroutine could be really handy for drawing objects, or inserting bitmaps too, I'll have to play with that some more.

[tachyon]

Yes, I know what you mean. Depending on the value my hack may or may not have a 1 pixel left offset from the tick mark. Mostly it lines up as expected. I was too lazy to look at the tick code to see how the rounding to integer is being done.