Passing DataArray.chunks to chunk() raises DeprecationWarning

[sehoffmann]

What is your issue?

import numpy as np
import xarray as xr

da = xr.DataArray(np.random.randn(100,100), dims=['a', 'b'])
da = da.chunk({'a': 10, 'b': 10})

da.chunk(da.chunks)  <-- DeprecationWarning: Supplying chunks as dimension-order tuples is deprecated. It will raise an error in the future. Instead use a dict with dimension names as keys.

This situation might arise easily for instance when trying to chunk array_1 in the same way as array_2. Arguably, its unexpected that DataArray's own property is not allowed as argument to chunk().

[dcherian]

Use da.chunksizes instead. It is a dict.