renaming __xarray_dataarray_variable__ in xarray dataarray

Question

I have created a xarray dataarray using the xarray concat command. This has resulted in a dataarray with name __xarray_dataarray_variable__ . However, I cannot seem to rename it using the rename command. Is there some other way to rename it?

I tried this:

da.rename({'__xarray_dataarray_variable__': 'new'})

but I get this error: *** ValueError: cannot rename '__xarray_dataarray_variable__' because it is not a variable or dimension in this dataset

This is what the dataarray looks like:

<xarray.DataArray (time: 2, band: 1, y: 2334, x: 4258)>
dask.array<shape=(2, 1, 2334, 4258), dtype=float32, chunksize=(1, 1, 2334, 4258)>
Coordinates:
  * band     (band) int32 1
  * y        (y) float64 4.406e+06 4.406e+06 4.406e+06 4.406e+06 4.406e+06 ...
  * x        (x) float64 1.125e+05 1.126e+05 1.127e+05 1.128e+05 1.129e+05 ...
  * time     (time) datetime64[ns] 2005-12-31 2006-12-31
Attributes:
    transform:   (90.0, 0.0, 112500.0, 0.0, -90.0, 4406400.0, 0.0, 0.0, 1.0)
    crs:         +ellps=GRS80 +no_defs +proj=utm +towgs84=0,0,0,0,0,0,0 +unit...
    res:         (90.0, 90.0)
    is_tiled:    1
    nodatavals:  (-9999.0,)

From http://xarray.pydata.org/en/stable/generated/xarray.DataArray.to_netcdf.html , Only xarray.Dataset objects can be written to netCDF files, so the xarray.DataArray is converted to a xarray.Dataset object containing a single variable. If the DataArray has no name, or if the name is the same as a co-ordinate name, then it is given the name ' xarray_dataarray_variable '.

Answer 1

我认为您正在寻找to_dataset方法：

ds = da.to_dataset(name='new')