'Piecewise constant or 0-degree spline interpolation in Python/Scipy
Despite scipy's documentation indicating that scipy.interpolate.UnivariateSpline will run on order k<=5, under the hood there is an additional constraint for order >=1. Does anyone know of a way to achieve either 0-degree spline or piecewise constant interpolation with Numpy/Scipy?
Solution 1:[1]
You can use interp1d with kind='zero' or kind='nearest'.
Solution 2:[2]
I have tried a simple trick 1) do numerical integration of step-wise constant function and you will get broken line 2) use 1. degree spline fit 3) calculate a derivative of the spline (method .derivative())
it has worked, but it could be better.
Sources
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Source: Stack Overflow
| Solution | Source |
|---|---|
| Solution 1 | Daniel |
| Solution 2 | Tomas |