python - scipy PchipInterpolator implementation problems -

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i trying implement pchipinterpolator based on link:

http://docs.scipy.org/doc/scipy-0.14.0/reference/generated/scipy.interpolate.pchipinterpolator.html

the code using is:

x = np.arange(0, 10) y = np.exp(-x/3.0) set_interp  =   scipy.interpolate.pchipinterpolator( x, y, extrapolate=true )

i error as:

typeerror: __init__() got unexpected keyword argument 'extrapolate'

so, implementing wrong way. have tried numerous other ways implement extrapolate fails.

pchipinterpolator refactored in version 0.14, , that's when has grown extrapolate keyword.

compare docs version 0.13: http://docs.scipy.org/doc/scipy-0.13.0/reference/generated/scipy.interpolate.pchipinterpolator.html

and version 0.14: http://docs.scipy.org/doc/scipy-0.14.0/reference/generated/scipy.interpolate.pchipinterpolator.html

(disclaimer: involved in refactor)

scipy 0.13 quite old now, best consider upgrading.

more recent scipy versions better in terms of consistency in interpolate. one, polynomial-based interpolators (ppoly, bpoly, pchip , akima) have extrapolate keyword.


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