Hi, I have a mathematic function (a curve in a plane).

How can the grasshopper generate it.

Like z = y^3 - y^2 + 100

‘z’ is so far out of scale compared to ‘x’ and ‘y’ that it’s difficult to see the full effect in a close-up:

math_2023Feb6a.gh (4.6 KB)

You can do the same thing with the `Evaluate` component. Both are found at ‘Maths | Script’. If you zoom in on the inputs, both can add more inputs. Instead of the text panel for `Evaluate`, you can right-click on the ‘F’ input and type directly or use the ‘Expression Editor’.

Thank you very much!

I really appreciate your help.

Hi, I’ve got the points in the .gh file.

How can I obtain the fit curve.

Oops, I was sure I had already posted this, perhaps it answers your new question?

math_2023Feb7a.gh (7.5 KB)

There are other ways to create a surface from points, like `SrfGrid`. And the values from `Eval` can be manipulated further before creating the points with tools like `ReMap` and `Graph Mapper`.

Great!