Interpolate scattered values on a regular grid with bi-harmonic interpolation method

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Felix Ja 2021-8-14

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评论： Felix Ja 2021-8-15

Hi mates.

I've got an vector with values and Corresponding x, y vectors.

I would like to interpolate values in an entire study area.

This is my approach:

reservoir(:,1) is the Vector with the x-Values, reservoir(:,2) contains y-Values. '"y" is the vector with the actual measured values at the coordinates.

honestly, I don't know, what 'v4' stands for.

That's, what I get:

And I don't know why.

Any guesses or tips?

Best regrades

Felix

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darova 2021-8-14

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Create appropriate mesh

x = linspace(min(reservoir(:,1)),max(reservoir(:,1)),20);
y = linspace(min(reservoir(:,2)),max(reservoir(:,2)),20);
[X,Y] = meshgrid(x,y);
Z = griddata(reservoir(:,1),reservoir(:,2),y,X,Y);
surf(X,Y,Z)