Ok, this is an extremely basic question, so obviously I'm missing something easy. I've installed the GD module for Perl and the example scripts work fine. I'm now trying to write a perl script to manipulate an image. The first thing I would like to do is find the color index of a pixel. I found the function gdImageGetPixel on a web site so I tried to use it without success. It errors out with subroutine undefined. How do I get the pixel color, and in general where can I find a list of functions available for GD using Perl? Thanks