Give that man a cookie! Thanks. I was going nuts there. Time for a quick map and amend of the date_format sub...

Well, this is slightly better. Now all I have to do is work out how to stretch it to the right. Weird.

Aha! Adding back in x_max_value is looking almost there.

One trick you might use, though it is definitely a trick, is to produce your graph much wider than you eventually want it, and then use the GD::Image copying methods to crop out and peice together the pieces you want. Eg.

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-|
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-|                              ### ###  #####  ####
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-|                              #####################
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-+------------------------------'-'-'-'-'-'-'-'-'-'-'-'
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[download]

then copy the interesting bits of the graph to a new image leaving out the boring bit between the left hand scale and the actual data.

Hmm. All in all, mapping the data to zero and then mapping it back in the number formating routine makes much more sense :)

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