Note in the docs that GD::Graph's plot() method expects to have the same number of points in every set. The docs suggest providing an explicit undef value for points that are missing from your data (not to be confused with uses of the undef function call). Are your files perhaps not always providing the same number of points?

In reply to Re^3: GD @data array question by mr_mischief
in thread GD @data array question by andy_7t

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