[SciPy-User] Difference in quality from different interpolation orders

[Chris Weisiger]

Various methods in scipy use spline interpolation, and let you choose the
order for the interpolation with the default being 3. I've noticed that for
one task my program performs, order = 1 is about three times faster than
order = 3, and visually I don't notice any decrease in data quality.
However, visual inspection isn't enough. Is there some way I can measure the
error introduced from using a lesser interpolation order? All else being
equal, faster is better, but if it comes at a significant cost in data
quality, then it's out of the question.

-Chris
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