Filter out the points outside a curve

Revit
1

Given a list of points and a polycurve (maybe), how can I filter out those point outside the curve?

Maybe something like this post, but I cant figure out what Dimitar_Venkov used.

2

Hi Annie,

May be this will give you clear picture. It will be better if you can drop screenshot of your graph.

1130Ă—637 241 KB

3

Thanks kulkul