issues: 28575097

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id node_id number title user state locked assignee milestone comments created_at updated_at closed_at author_association active_lock_reason draft pull_request body reactions performed_via_github_app state_reason repo type
28575097 MDU6SXNzdWUyODU3NTA5Nw== 32 Dataset.__delitem__() kills dimensions dictionary 6509590 closed 0     5 2014-03-02T07:48:33Z 2014-03-07T06:15:36Z 2014-03-07T06:15:36Z NONE      

Trying to re-align slocum with xray... it seems that deleting a variable from a Dataset object erases the dimensions dictionary:

``` In [47]: fcst.dimensions Out[47]: Frozen(OrderedDict([(u'lat', 9), (u'lon', 9), (u'height_above_ground4', 1), (u'time', 65)]))

In [48]: del fcst['height_above_ground4']

In [49]: fcst.dimensions Out[49]: Frozen(OrderedDict()) ```

Also, the removed variable still appears as a dimension in the remaining variables' coordinate systems:

In [57]: fcst.variables Out[57]: Frozen(_VariablesDict([(u'lat', <xray.XArray (lat: 9): object>), (u'lon', <xray.XArray (lon: 9): object>), (u'time', <xray.XArray (time: 65): datetime64[ns]>), (u'u-component_of_wind_height_above_ground', <xray.XArray (time: 65, height_above_ground4: 1, lat: 9, lon: 9): float32>), (u'v-component_of_wind_height_above_ground', <xray.XArray (time: 65, height_above_ground4: 1, lat: 9, lon: 9): float32>)]))

Is this intentional? I'm using delitem as replacement for the old polyglot's Dataset.squeeze() - perhaps that's abuse?

 
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