Stereographic Projection

Hello, i try to create Stereographic Projection with transformation equations from this link


I have two problems, when the origin of pland have x=0 (i don’t test y=0) i got error
Otherwise the result looks different to their example
The central longitude don’t change anything i keep it 0

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Stereographic Projection python.gh (16.4 KB)

I remove A0 from A = A0+atan … because in the formula they use A-A0, and i cull the top point but still can’t get the same result like in there example

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