I think you are sending the string "undef" and not an undefined value. Try a 
@datapointsarray = map {$_ eq "undef" ? undef : $_ } @datapointsarray;

[download]
on the array that holds your datapoints.

--

flounder

In reply to Re: GD::Graph skip_undef not working properly by flounder99
in thread GD::Graph skip_undef not working properly by kryberg

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