Two dimensional extrapolation
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Does anyone know how to do two-dimensional extrapolation for out of range values?
Z=interp2(X,Y,Z,XI,YI).
In Matlab, you specify "extrapval" for out of range values. If I don't want to specify a value but actually want to extrapolate, any easy way of doing it in Matlab?
Thanks!
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John D'Errico
2011-5-3
1 个投票
I posted the function interpne on the FEX a few years ago. It does what you want, as long as you want linear extrapolation.
Note: extrapolation is a dangerous business.
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Dan
2011-5-3
0 个投票
You can calculate the derivatives than use linear extrapolation using these derivatives. Another way is to re-implement interp2 to incorporate that feature.
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