Improve docs and add test case for RegularGridInterpolator #22138
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Aligns the documentation of the
fill_value
argument ofRegularGridInterpolator
with that of scipy, and adds a corresponding test case.Solves discussion #22031.
What is the newly documented behavior?
If
fill_value = None
is passed toRegularGridInterpolator
, extrapolation outside the domain is performed.Is the newly documented behavior tested?
Yes. The current test of JAX's
RegularGridInterpolator
already used validation points outside the domain. I've adjusted the test such that afill_value
ofNone
is also compared between the scipy and JAX implementations.