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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Accepted Answer
Walter Roberson
on 21 Apr 2014
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
on 21 Apr 2014
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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