Speed up 1D spline interpolation on matrix
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Hello,
I have a NxM matrix named data and I need to spline interpolate each row of my matrix according to:
for k=1:size(data,1)
data(k,:)=spline( x , data(k,:).', x + shift(k,:).' );
end
where x is the original monotonously increasing spacing of each row. And the NxM matrix shift is the row- and column-dependent shift that I want to apply to each sample.
Is there a way to speed this up further? I found a lot of functions that claim a speed improvement of x10 for linear interpolation. Anything I can do for spline?
Thanks!
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