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  • andrew-c-ross · 1 ✖

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  • xarray .count() gives -1 when it should be 1? · 1 ✖

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  • CONTRIBUTOR · 1 ✖
id html_url issue_url node_id user created_at updated_at ▲ author_association body reactions performed_via_github_app issue
464088384 https://github.com/pydata/xarray/issues/2770#issuecomment-464088384 https://api.github.com/repos/pydata/xarray/issues/2770 MDEyOklzc3VlQ29tbWVudDQ2NDA4ODM4NA== andrew-c-ross 5852283 2019-02-15T15:22:48Z 2019-02-15T15:22:48Z CONTRIBUTOR

I can reproduce OP when the coordinate is a datetime64, but the problem does not occur with int64s (or float64s).

datetime coordinate: ``` In [1]: import xarray

In [2]: xarray.version Out[2]: '0.11.2'

In [3]: import datetime as dt

In [4]: da = xarray.DataArray([0], coords=[('time', [dt.datetime(1979, 1, 1)])])

In [5]: da.isel(time=0).time.count() Out[5]: <xarray.DataArray 'time' ()> array(-1) Coordinates: time datetime64[ns] 1979-01-01 ```

int coordinate:

``` In [6]: da = xarray.DataArray([0], coords=[('time', [0])])

In [7]: da.isel(time=0).time.count() Out[7]: <xarray.DataArray 'time' ()> array(1) Coordinates: time int64 0 ```

 
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   xarray .count() gives -1 when it should be 1?  409906674

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