issue_comments: 418541019

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https://github.com/pydata/xarray/pull/2398#issuecomment-418541019 https://api.github.com/repos/pydata/xarray/issues/2398 418541019 MDEyOklzc3VlQ29tbWVudDQxODU0MTAxOQ== 6815844 2018-09-04T22:41:41Z 2018-09-04T22:41:41Z MEMBER

I wonder if we should consider calling this xarray.differentiate instead of xarray.gradient. I think the NumPy function is poorly named for differentiating along a single axis at once.

Agreed. Differentiate is nicer.

Some other api questions arised during the implementation + Do we support differentiate for Dataset? In that case, what should we do for the variables that are independent from the target coordinate? I thought 'keep them as is' is intuitive (and I implemented so), but mathematically, they should be zero.

  • Do we need to sort the array before computing differentiate? np.gradient implicitly assumes the array is sorted (but do nothing about this).
 
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