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what is the principle of griddata

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Hello. I want to know the principle of griddata.
I use griddata for interpolation very much, but I don't know how it work. When I search griddata, I just find how to use it. Where I get some principle of griddata?

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Arun Mathamkode
Arun Mathamkode on 1 Feb 2018
You can open the code of griddata by entering open griddata in the command window. The different functions used and the references are also provided in the code. griddata internally uses the scatteredInterpolant function for interpolation. Please refer to the documentation of scatteredInterpolant for more details and references.

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