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  • gerritholl · 6 ✖

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  • da.plot.pcolormesh fails when there is a datetime coordinate · 6 ✖

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id html_url issue_url node_id user created_at updated_at ▲ author_association body reactions performed_via_github_app issue
339515375 https://github.com/pydata/xarray/issues/1661#issuecomment-339515375 https://api.github.com/repos/pydata/xarray/issues/1661 MDEyOklzc3VlQ29tbWVudDMzOTUxNTM3NQ== gerritholl 500246 2017-10-26T00:40:20Z 2017-10-26T00:40:20Z CONTRIBUTOR

@TomAugspurger Is it this one?

 
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   da.plot.pcolormesh fails when there is a datetime coordinate 268487752
339467595 https://github.com/pydata/xarray/issues/1661#issuecomment-339467595 https://api.github.com/repos/pydata/xarray/issues/1661 MDEyOklzc3VlQ29tbWVudDMzOTQ2NzU5NQ== gerritholl 500246 2017-10-25T20:52:30Z 2017-10-25T20:52:30Z CONTRIBUTOR 
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   da.plot.pcolormesh fails when there is a datetime coordinate 268487752
339451381 https://github.com/pydata/xarray/issues/1661#issuecomment-339451381 https://api.github.com/repos/pydata/xarray/issues/1661 MDEyOklzc3VlQ29tbWVudDMzOTQ1MTM4MQ== gerritholl 500246 2017-10-25T19:54:34Z 2017-10-25T19:54:34Z CONTRIBUTOR

The problem is triggered by a recent change in pandas. I'm currently bisecting pandas to see where it is but it's a little slow due to the compilation at every step.

 
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   da.plot.pcolormesh fails when there is a datetime coordinate 268487752
339430955 https://github.com/pydata/xarray/issues/1661#issuecomment-339430955 https://api.github.com/repos/pydata/xarray/issues/1661 MDEyOklzc3VlQ29tbWVudDMzOTQzMDk1NQ== gerritholl 500246 2017-10-25T18:44:37Z 2017-10-25T18:44:37Z CONTRIBUTOR

Actually, it isn't in matplotlib really. It's xarrays responsibility after all. To plot with pcolormesh, one needs to convert the date axis using datenum, see https://stackoverflow.com/a/27918586/974555 . When plotting with xarray, that is out of control of the user, so there must be some step within xarray to prepare this. What I still don't know is why my code (not this MWE, but my actual code) worked several months ago but not now.

 
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   da.plot.pcolormesh fails when there is a datetime coordinate 268487752
339416758 https://github.com/pydata/xarray/issues/1661#issuecomment-339416758 https://api.github.com/repos/pydata/xarray/issues/1661 MDEyOklzc3VlQ29tbWVudDMzOTQxNjc1OA== gerritholl 500246 2017-10-25T17:58:34Z 2017-10-25T17:58:34Z CONTRIBUTOR

Never mind, this is in matplotlib. See https://github.com/matplotlib/matplotlib/issues/9577.

 
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   da.plot.pcolormesh fails when there is a datetime coordinate 268487752
339413389 https://github.com/pydata/xarray/issues/1661#issuecomment-339413389 https://api.github.com/repos/pydata/xarray/issues/1661 MDEyOklzc3VlQ29tbWVudDMzOTQxMzM4OQ== gerritholl 500246 2017-10-25T17:47:19Z 2017-10-25T17:47:19Z CONTRIBUTOR

I'm quite sure it worked in the past, but trying old versions of xarray yields the same error, so either my memory is wrong, or this started failing due to changes in dependencies.

 
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   da.plot.pcolormesh fails when there is a datetime coordinate 268487752

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