How to interpolate scattered grid data

Hi

I have some scattered data (z-values which are complex) on different latitude and longitude. I want to interpolate it uniformly so that I can fil the missing values of latitude and longitude.

[Walter Roberson]

griddata() can be used with complex values -- I just tried it.

Answer 1

[Kamran Mukhtar]

Thanks for your answer. Do you also know if we can also do extrapolation not necessarily too far but nearby cells ?

[Walter Roberson]

Yes.

Answer 2

[Kamran Mukhtar]

Would you be sharing it as well?

[Walter Roberson]

Use the 'v4' option of griddata.

"For all interpolation methods other than 'v4', the output vq contains NaN values for query points outside the convex hull of the sample data. The 'v4' method performs the same calculation for all points regardless of location."

Answer 3

[Kamran Mukhtar]

Thanks for your answer, saving my time. btw,I also have explored 'scatteredInterpolant' which also does extrapolation.