4182
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Ran 18 Dec 2017 05:43AM UTC

Jobs 7

Files 53

Run time 27min

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Build # 4182

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push

travis-ci

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web-flow

Commit Message

Indexing Variable objects with a mask (#1751)

* Variable indexing with a mask

This will be useful for multi-dimensional reindexing: marking masked items with
-1 is exactly the convention used by pandas.Index.get_indexer().

Example usage:

    In [6]: variable = xr.Variable(('x',), [1, 2, 3])

    In [7]: variable._getitem_with_mask([0, 1, 2, -1])
    Out[7]:
    <xarray.Variable (x: 4)>
    array([  1.,   2.,   3.,  nan])

    In [8]: variable._getitem_with_mask(xr.Variable(('x', 'y'), [[0, -1], [-1, 1]]), fill_value=-99)
    Out[8]:
    <xarray.Variable (x: 2, y: 2)>
    array([[  1, -99],
           [-99,   2]])

This uses where() so it isn't the most efficient (there is some wasted effort
doing indexing, as noted in the TODOs), but the implementation is pretty clean
and already works with dask.

For now, I'm leaving this as private API, but let's expose it publicly in the
future if we are happy with it. I would probably leave it as a Variable method
since this is pretty low-level.

* More tests for _getitem_with_mask & fixes for dask

Run Details

8465 of 8954 relevant lines covered (94.54%)

5.99 hits per line

Jobs

ID	Job ID	Ran	Coverage
1	4182.1 (CONDA_ENV=py27-min)	18 Dec 2017 05:43AM UTC	72.66	Travis Job 4182.1
2	4182.2 (CONDA_ENV=py27-cdat+pynio)	18 Dec 2017 05:47AM UTC	91.97	Travis Job 4182.2
3	4182.3 (CONDA_ENV=py34)	18 Dec 2017 05:44AM UTC	72.39	Travis Job 4182.3
4	4182.4 (CONDA_ENV=py35)	18 Dec 2017 05:48AM UTC	90.94	Travis Job 4182.4
5	4182.5 (CONDA_ENV=py36)	18 Dec 2017 05:46AM UTC	91.18	Travis Job 4182.5
13	4182.13 (CONDA_ENV=py36-rasterio1.0alpha)	18 Dec 2017 06:07AM UTC	91.31	Travis Job 4182.13
14	4182.14 (CONDA_ENV=py36-zarr-dev)	18 Dec 2017 06:10AM UTC	88.79	Travis Job 4182.14

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