Thanks, but let me clarify. What I'd like to do is to upload a PNG file, use GD::newFromPng() to make a new GD::Image object from that file, and then call various GD methods to modify the image before displaying it. I think that something like
$w = new WWPlot(342,154);
$image = $w->im()->newFromPng($path_to_png);
would make the object if I knew $path_to_png. Is this right? And what should I use for $path_to_png?