Here's some example code:
use strict;
use warnings;
use Image::Magick;
my $image = Image::Magick->new(
size => '1024x100',
type => 'Greyscale',
depth => 16,
);
$image->Read('xc:white');
for ( 0 .. 1023 ) {
my $color = sprintf "gray(%2.3f%%)", 100 * $_ / 1023;
my $res = $image->Draw(
primitive => 'line',
stroke => $color,
points => "$_,0 $_,100",
);
warn $res if $res;
}
for ( 0 .. 16 ) {
$image->SetPixel(
x => int( (16 - $_) * 1023 / 16 ),
y => 50,
color => [ ( $_ / 16 ) x 3 ],
);
}
my $res = $image->Write( filename => "grey.png" );
warn $res if $res;
Why are you ignoring Markup in the Monastery? Also there's bold warning below post text area: Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
Update: added SetPixel demo