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ventaky

USA
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Posted - 07/11/2005 :  5:39:48 PM  Show Profile  Edit Topic  Reply with Quote  View user's IP address  Delete Topic
Hi
I was wondering if it's possible to find the radius of curvature of a 3D surface in origin. If yes please let me know how.
Thank you
Venkatesh

Leo_Li

China
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Posted - 07/13/2005 :  11:25:17 PM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
How about this solution?

1. In Analysis->Nonlinear Curve Fit->Advance Fitting Tool dialog, define a new function: z = sqrt(r^2 - x^2 - y^2) with parameter r and independent var x, y.
2. Fit the 3D surface to the equation. The fitted r is the radius?

Leo
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