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  • shoyer · 3 ✖

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  • rolling requires pandas >= 0.18 · 3 ✖

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325247792 https://github.com/pydata/xarray/issues/1512#issuecomment-325247792 https://api.github.com/repos/pydata/xarray/issues/1512 MDEyOklzc3VlQ29tbWVudDMyNTI0Nzc5Mg== shoyer 1217238 2017-08-28T02:48:23Z 2017-08-28T02:48:23Z MEMBER

I'm +1 for requiring NumPy 1.11 and pandas 0.18.

Though I do not yet understand well about NDArrayOperatorsMixin, it sounds a good direction to keep a well-managed code. But it might be a kind of heavy change and is better to be another issue?

Agreed!

 
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   rolling requires pandas >= 0.18 251666172
324822729 https://github.com/pydata/xarray/issues/1512#issuecomment-324822729 https://api.github.com/repos/pydata/xarray/issues/1512 MDEyOklzc3VlQ29tbWVudDMyNDgyMjcyOQ== shoyer 1217238 2017-08-25T04:44:54Z 2017-08-25T04:44:54Z MEMBER

pandas 0.18 came out in March 2016 (about 18 months ago by the time of our next release). I would be reluctant to require anything newer than NumPy 1.11, which also came out in March 2016.

I don't see removing functions from npcompat as particularly good justification on its own. But if there is new functionality that requires a newer NumPy, then that could be a good reason to require something newer (especially if it's hard to backport).

For example, if we required NumPy 1.13, then we could make use of NDArrayOperatorsMixin and __array_ufunc__. This might be worth it for the significant clean-up of our type casting hierarchy for arithmetic (e.g., as @dopplershift reported on his pain with in his scipy presentation).

 
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   rolling requires pandas >= 0.18 251666172
324404323 https://github.com/pydata/xarray/issues/1512#issuecomment-324404323 https://api.github.com/repos/pydata/xarray/issues/1512 MDEyOklzc3VlQ29tbWVudDMyNDQwNDMyMw== shoyer 1217238 2017-08-23T17:22:03Z 2017-08-23T17:22:03Z MEMBER

We should probably update our minimum required dependencies for the next release, both for pandas and numpy. Pandas 0.15 and numpy 1.7 are pretty old now.

Additionally, I noticed that in travis's CONDA_ENV=py27-min setup, our unit tests run with pandas == 0.20, though it might be intended to run with pandas == 0.15.

Yes, this is not intended!

 
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   rolling requires pandas >= 0.18 251666172

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