How do you prepare meshgrids for interp2?

I have : theta = 0:5:180; phi = -180:5:180; size(temp) is 37x73; tp = 90;rp = 0; Vq = interp2(thetaprime,phiprime,temp,tp,rp); gives the error: Error using griddedInterpolant The grid vectors do not define a grid of points that match the given values.
Error in interp2>makegriddedinterp (line 211) F = griddedInterpolant(varargin{:});
Error in interp2 (line 126) F = makegriddedinterp({X, Y}, V, method,extrap);
Error in Add_Rings_Spots_To_Bullwink_Data_File (line 67) Vq = interp2(thetaprime,phiprime,temp,tp,rp); I've looked at the help and tried using meshgrid, but I am lost as to why this does not work. I would be greatful for any help. Thank you.

 采纳的回答

The documentation for Interpolating Gridded Data explains it better than I can.

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This will take some time to plow through, but it does spell it out. Thank you.
My pleasure!
Here’s a tutorial by Doug Hull, Non-uniform spacing for surfaces in MATLAB that I watched a few times and found to be helpful. It can give you some insight and context to make the written documentation a bit more relevant. There may be more tutorials available that are even more relevant to what you want to do.

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