Surface from and with specific (control) points


I really need some help with a task in Rhino.

I have a grid/cloud of points that I need to make into a surface, making these excisting points the surface’s control points. Meaning, I need a surface where I can adjust the height in each of these control points. The points relate to specific columns so I really need these points to be definite.

The problem I’m facing with the different commands I’ve tried out is that it parts the surface into triangles, so that when I adjust one point in height I get a very pointy, non-organic, expression.

Is there a way I can have a surface that I can adjust in an organic way (double curved srf)?

I’ve attached a rhinofile with my points, if anyone wants to give it a go, it would mean the world to me!

Pointcloud.3dm (180.9 KB)

Hi Susan- surfaces want to be arranged on a grid of points, where there is a consistent number in each row and each column, so with this set of points, you cannot use SrfControlPtGrid or SrfptGrid. However, you can Patch through the points, using History, and then adjust the points. They will not be control points for the surface but they will control the patch through History.