Logic for surface from points

What is the logic for surface from points, What is the proper amount of U values to give it based on the points you input? I always seem to get this error "U count not valid for this amount of point"

Replies to This Discussion

Permalink Reply by Yoann Mescam (Systemiq) on September 10, 2011 at 6:55pm

If you divide a surface or curve in N segments, you have N+1 segment end points.

Permalink Reply by Chris Tietjen on September 10, 2011 at 7:22pm

The U count should be the larger of the dimensions of the point grid. For example here it's 6. You still need to work with a basic row/column grid (though the spacings can be irregular) to get proper result.

Chris

Permalink Reply by Michael Pryor on September 10, 2011 at 7:52pm

but does this only work for planar surfaces?

Permalink Reply by Chris Tietjen on September 11, 2011 at 5:24am

No the points don't need to lie in a plane.

Permalink Reply by Julie Brokish on December 6, 2011 at 11:04pm

I'm finding that if the points are not planar that the surface folds over on itself-- is there a way to fix this?

Permalink Reply by Chris Tietjen on December 7, 2011 at 12:00pm

You have to pick the points in a specific order. Can you post your grouping of points in a rhino file?

Permalink Reply by Julie Brokish on December 7, 2011 at 12:06pm

This is pretty much where I'm at. I'm trying to create a surface that is randomly undulating that goes to the edge of the circle. I'm really new to Grasshopper, so if there's a better way to do it I'm all ears!

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