1-D interpolation question
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i have some point and values matrix. [100 ..., 195 ....,300 ...]; and i have another matrix that goes from 50 to 400; if i use interp1 and extrap option, my extrap values are added in the beginning and end of the result.
but i want to put 2 different values in beginning and end.
how can i do that?
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Walter Roberson
2014-4-21
Turn off extrap. Let NaN be filled in. Then use find() and isnan() to find the boundaries of the extrapolation, and write the extrapolation constants in as desired.
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Walter Roberson
2014-4-21
idx = ~isnan(YourVector);
first_boundary = find(idx, 1, 'first');
YourVector(1:first_boundary - 1) = 50;
second_boundary = find(idx, 1, 'last');
YourVector(second_boundary + 1 : end) = 100;
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