Monotonic interpolation #117
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sergiopasra
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Jan 22, 2016
Monotonic piece-wise cubic interpolation
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This PR adds a monotonic piece-wise cubic interpolator based on this paper: http://adsabs.harvard.edu/full/1990A%26A...239..443S
This kind of interpolator is useful to resample conserving the total flux.
This interpolator is as fast as
scipy.interpolate.PchipInterpolator(at least for the examples I have tested) and is more convenient (it can extrapolate using the last sample in the borders)