I want to select only this points of paraboloid

paraboloid.gh (13.4 KB)

Hello guys…
I am newbie in rhino can anyone help me how to select only marked points. (refer Image)

paraboloid_re.gh (12.6 KB)

Thank you so much @HS_Kim it is very help for me. Looks like alot of leaning ahead

Alternatively, you could avoid Flip, TStat and Branch by using List Item directly after Partition (green group), flattened or not.


@huzefam1, your ‘Angle’ sliders would make more sense if you right-click the Rotate ‘A’ (Angle) input and enable ‘Degrees’ instead of the default radians (~57.3 degrees). FYI.