https://grasshopperdocs.com/components/grasshoppercurve/extremes.html

I am trying to find the extremes of this curve in the XY plane… and failing miserably ( The docs say nothing about the requirements of the input curve having three dimensions

The curve has no Z value. its a 2D curve that sits ON THE XY plane, so I expect the XY plane to be the correct choice

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To follow on from this thread…

How is this done?