Shockingly, I thought I would have a PDL go at this. But first, I had to see what it looked like!

At first, it produced a stunning result! A black square, and lots of errors that "" was not a number. It transpired that split /\s/, "1    2    3" does not make 3 elements, but 7. Instead sample_data needs to split on /\s+/, and all is well.

In reply to Re: Animated Heatmap by etj
in thread Animated Heatmap by Anonymous Monk

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