Why

While running the "make" command for building the documentation, I had the following error : (I am on Windows 11 and using Anaconda Prompt as my CLI) ``` WARNING: ources... [ 98%] user-guide/computation

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Exception in C:\Users\91942\xarray\doc\user-guide\computation.rst at block ending on line 466 Specify :okexcept: as an option in the ipython:: block to suppress this message

ValueError Traceback (most recent call last) Cell In[83], line 1 ----> 1 xr.polyval(coord=x, coeffs=out.polyfit_coefficients)

File ~\anaconda3\envs\xarray-docs\lib\site-packages\xarray\core\computation.py:1958, in polyval(coord, coeffs, degree_dim) 1954 raise ValueError( 1955 f"Dimension {degree_dim} should be a coordinate variable with labels." 1956 ) 1957 if not np.issubdtype(coeffs[degree_dim].dtype, int): -> 1958 raise ValueError( 1959 f"Dimension {degree_dim} should be of integer dtype. Received {coeffs[degree_dim].dtype} instead." 1960 ) 1961 max_deg = coeffs[degree_dim].max().item() 1962 coeffs = coeffs.reindex( 1963 {degree_dim: np.arange(max_deg + 1)}, fill_value=0, copy=False 1964 )

ValueError: Dimension degree should be of integer dtype. Received int64 instead. `` In the file computation.py(present in xarray/core), the program raises an error if the functionnp.issubdtype()returns false. Here, it wantedcoeffs[degree_dim]to be ofintdata type (windows defaultintdata type isint32) , but it was ofint64datatype, and as the documentation ofnp.issubdtype()` states here : "Similar types of different sizes are not subdtypes of each other" so the function returned false and the program raised an error.

To fix this error, I have changed the following :

What

I replaced the np.issubdtype call with obj.dtype.kind not in "i" to check if coeffs[degree_dim] is a general signed integer data type.