Again, you're passing $winopt as the first parameter. $winopt is a hash reference, but PDL::Graphics2D wants an "Interface" (whatever it means by this) as the first parameter, and it tells you that it is unhappy with a hash reference. See the PDL::Graphics2D documentation.

$win = PDL::Graphics2D->new(<Interface>, <Options>);

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In reply to Re^4: PDL questions by Corion
in thread PDL questions by Anonymous Monk

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