MATLAB: How to get the temperature at a specific point through interpolation

interpolationnot in the original setspecific latitude and longitudetemperature

I have 3 vectors latitude longitude and temperature.i.e the temperature is at the respective latitudes and longitudes.Now i want to find out the temperature at a specific latitude and longitude not in the original set through interpolation.

P.S. the data varies randomly.i.e it is not monotonously inc or dec.

Best Answer

See TriScatteredInterp

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MATLAB: Interpolation

You probably need to use interp1. If you can post your code, I can maybe be more specific.

HTH,

Arnaud

MATLAB: Interpolation

To clarify: if the combination holds of x in 360 to 380, and y in 2200 to 2400, then z should be the constant value 900? If so, use logical indexing.

Table = [360 380 2200 2400 900; 325 333 2817 2895 888];  %e.g.
z = NaN(size(X_calc));
for K = 1 : size(Table,1)
  idx = X_calc >= Table(K,1) & X_calc <= Table(K,2) & ...
          Y_calc >= Table(K,3) & Y_calc <= Table(K,4);
    z(idx) = Table(K,5);
  end

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MATLAB: Interpolation

MATLAB: Interpolation

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