issues: 1117563249

This data as json

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
1117563249 I_kwDOAMm_X85CnKlx 6204 [Bug]: cannot chunk a DataArray that originated as a coordinate 6628425 open 0     1 2022-01-28T15:56:44Z 2022-03-16T04:18:46Z   MEMBER      

What happened?

If I construct the following DataArray, and try to chunk its "x" coordinate, I get back a NumPy-backed DataArray: ``` In [2]: a = xr.DataArray([1, 2, 3], dims=["x"], coords=[[4, 5, 6]])

In [3]: a.x.chunk() Out[3]: <xarray.DataArray 'x' (x: 3)> array([4, 5, 6]) Coordinates: * x (x) int64 4 5 6 If I construct a copy of the `"x"` coordinate, things work as I would expect: In [4]: x = xr.DataArray(a.x, dims=a.x.dims, coords=a.x.coords, name="x")

In [5]: x.chunk() Out[5]: <xarray.DataArray 'x' (x: 3)> dask.array<xarray-\<this-array>, shape=(3,), dtype=int64, chunksize=(3,), chunktype=numpy.ndarray> Coordinates: * x (x) int64 4 5 6 ```

What did you expect to happen?

I would expect the following to happen: ``` In [2]: a = xr.DataArray([1, 2, 3], dims=["x"], coords=[[4, 5, 6]])

In [3]: a.x.chunk() Out[3]: <xarray.DataArray 'x' (x: 3)> dask.array<xarray-\<this-array>, shape=(3,), dtype=int64, chunksize=(3,), chunktype=numpy.ndarray> Coordinates: * x (x) int64 4 5 6 ```

Minimal Complete Verifiable Example

No response

Relevant log output

No response

Anything else we need to know?

No response

Environment

INSTALLED VERSIONS

commit: None python: 3.7.10 | packaged by conda-forge | (default, Feb 19 2021, 15:59:12) [Clang 11.0.1 ] python-bits: 64 OS: Darwin OS-release: 21.2.0 machine: x86_64 processor: i386 byteorder: little LC_ALL: None LANG: en_US.UTF-8 LOCALE: ('en_US', 'UTF-8') libhdf5: 1.10.5 libnetcdf: 4.6.3

xarray: 0.20.1 pandas: 1.3.5 numpy: 1.19.4 scipy: 1.5.4 netCDF4: 1.5.5 pydap: None h5netcdf: 0.8.1 h5py: 2.10.0 Nio: None zarr: 2.7.0 cftime: 1.2.1 nc_time_axis: 1.2.0 PseudoNetCDF: None rasterio: None cfgrib: None iris: None bottleneck: None dask: 2.22.0 distributed: None matplotlib: 3.2.2 cartopy: 0.19.0.post1 seaborn: None numbagg: None fsspec: 2021.06.0 cupy: None pint: 0.15 sparse: None setuptools: 49.6.0.post20210108 pip: 20.2.4 conda: 4.10.1 pytest: 6.0.1 IPython: 7.27.0 sphinx: 3.2.1

 
{
    "url": "https://api.github.com/repos/pydata/xarray/issues/6204/reactions",
    "total_count": 2,
    "+1": 2,
    "-1": 0,
    "laugh": 0,
    "hooray": 0,
    "confused": 0,
    "heart": 0,
    "rocket": 0,
    "eyes": 0
}
     13221727 issue

Links from other tables