I've had a strange problem using GD::Graph::lines. I'm using it in a script to draw graphs for six different variables, saved in PNG format and then displayed on an html page (on local drive). I've been doing this daily (on new data each dat) for a couple of weeks.

Today, the png file for one of the graphs won't display on the browser (MSIE). I look at the .png file using the XP pic previewer, and it looks fine. I open in Photoshop, save, and now it displays on the browser.

I'm at a loss to figure out how I can debug this. I'm using a loop to generate all six graphs and it's working for 5/6. So it would appear that GD::Graph must be writing something into the file that the browser doesn't like, and that it's doing this randomly or as a result of the data being plotted. Also Photoshop gets rid of this problem when it saves the file.

Anyone have suggestions for how I can resolve this?

Many thanks.... Steve

In reply to GD::Graph PNG error by cormanaz

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