issue_comments: 1272324257

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https://github.com/pydata/xarray/pull/7123#issuecomment-1272324257 https://api.github.com/repos/pydata/xarray/issues/7123 1272324257 IC_kwDOAMm_X85L1iCh 22195223 2022-10-08T13:46:26Z 2022-10-08T13:46:26Z CONTRIBUTOR

I'm running into an issue when trying to directly use the DataArray.reduce method.

At first I used DataArray.cumsum to see the expected behavior: ```

data = np.arange(12).reshape(4,3) da = xr.DataArray(data=data, dims=['x', 'y'], coords={'x': [10, 20, 30, 40], 'y': [70, 80, 90]}) da.cumsum(dim='x') <xarray.DataArray (x: 4, y: 3)> array([[ 0, 1, 2], [ 3, 5, 7], [ 9, 12, 15], [18, 22, 26]]) Coordinates: * x (x) int64 10 20 30 40 * y (y) int64 70 80 90 ```

When I'm trying to achieve the same result through DataArray.reduce I'm running into the following crash: ```

func = xr.DataArray.cumsum da.reduce(func=func, dim='x') Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/mnt/c/Users/GoMaN/Desktop/GoMaN/Projects/xarray/xarray/core/dataarray.py", line 3442, in reduce var = self.variable.reduce(func, dim, axis, keep_attrs, keepdims, kwargs) File "/mnt/c/Users/GoMaN/Desktop/GoMaN/Projects/xarray/xarray/core/variable.py", line 1883, in reduce data = func(self.data, axis=axis, kwargs) File "/mnt/c/Users/GoMaN/Desktop/GoMaN/Projects/xarray/xarray/core/common.py", line 63, in wrapped_func return self.reduce( AttributeError: 'numpy.ndarray' object has no attribute 'reduce' ```

Am I using DataArray.reduce incorrectly?

Thanks in advance :)

 
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