Freeware Listing: Qinterp

ScaleTime - fast linear matrix interpolation I have recorded timeseries of e.g. size [100'000 x 10] and cut out chunks of about 100 frames according to some events and normalize them to exactly 100 frames. For this task, the direct approach with Matlab's INTERP1 works, but it is slow: interp1(1:size(Y, 1), Y, Ti, '*linear') Cutting Y to blocks of 1000 frames at first accelerates the computing, but encreases the complexity. Therefore I've created the function ScaleTime for: - linear interpolation - equally spaced input data - equally or non-equally spaced interpolation steps - matrix input - no handling of NaNs, no extrapolation.

  • Publisher: Jan Simon
  • Date: 26-06-2013
  • Size: 10 KB
  • Platform: Matlab, Scripts

Qinterp: Freeware | All

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