Well, having used GD::Graph quite a bit for CVS Monitor, here's a few of my favourites.

1. Axis - I don't want to have to manually tell what axis to use, although I'd like the option. Lacking any information, I'd like the graph module to pick a relatively sensible set of both X and Y axis, and a set of seperators (both quantity and values) that are asthetically pleasing and functionally useful.

I ended up having to write Chart::Math::Axis to try and deal with this situation in my graphs.

2. Time - I want my automagic horozontal axis to display time sensibly. I want something that understands that my data isn't necesarily uniform over time, and picks sensible values, days vs weeks vs months. Otherwise, I want the same as for 1.

3. Decoration. I don't care about particularly shiny graphics so much. But I DO want relatively nice labels, in a nice font, anti-alised, and so on. I want the graph to work out how to position the labels properly, shrinking the actual data are down to the most appropriate size.

4. As with font's, it might be nice to have my lines anti-aliased. Not everything needs to be incredibly scientific accuracy, sometimes it's the asthetics that count a little more, and some light anti-aliasing would be greatly useful.

The graphs don't have be massively eye-candied, but it would be nice to have them at least clean-looking.

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