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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
1268821199 I_kwDOAMm_X85LoKzP 6691 Rolling.argmin() and Rolling.argmax() over multiple dimensions does not work AlxLhrNc 90059220 open 0     2 2022-06-13T02:42:14Z 2022-06-17T02:54:27Z   NONE      

What is your issue?

I am working with xarray.core.rolling.DataArrayRolling objects and for some obscure reason, they raise the following error when the .argmin() and .argmax() methods are used: ``` window_size = {name: n for name in ['lat', 'lon']} window = data_nc.rolling(window_size, center=True) peak_min = window.argmin() peak_max = window.argmax()

Traceback (most recent call last): Input In [48] in <cell line: 3> File ~\Installed_Programs\Anaconda3\envs\phd\lib\site-packages\xarray\core\rolling.py:122 in method return self._numpy_or_bottleneck_reduce(

File ~\Installed_Programs\Anaconda3\envs\phd\lib\site-packages\xarray\core\rolling.py:541 in _numpy_or_bottleneck_reduce return self.reduce(array_agg_func, keep_attrs=keep_attrs, **kwargs)

File ~\Installed_Programs\Anaconda3\envs\phd\lib\site-packages\xarray\core\rolling.py:428 in reduce result = windows.reduce(

File ~\Installed_Programs\Anaconda3\envs\phd\lib\site-packages\xarray\core\dataarray.py:2696 in reduce var = self.variable.reduce(func, dim, axis, keep_attrs, keepdims, **kwargs)

File ~\Installed_Programs\Anaconda3\envs\phd\lib\site-packages\xarray\core\variable.py:1804 in reduce data = func(self.data, axis=axis, **kwargs)

File ~\Installed_Programs\Anaconda3\envs\phd\lib\site-packages\xarray\core\duck_array_ops.py:335 in f return func(values, axis=axis, **kwargs)

File <array_function internals>:180 in argmax

File ~\Installed_Programs\Anaconda3\envs\phd\lib\site-packages\numpy\core\fromnumeric.py:1216 in argmax return _wrapfunc(a, 'argmax', axis=axis, out=out, **kwds)

File ~\Installed_Programs\Anaconda3\envs\phd\lib\site-packages\numpy\core\fromnumeric.py:66 in _wrapfunc return _wrapit(obj, method, args, *kwds)

File ~\Installed_Programs\Anaconda3\envs\phd\lib\site-packages\numpy\core\fromnumeric.py:43 in _wrapit result = getattr(asarray(obj), method)(args, *kwds)

TypeError: 'tuple' object cannot be interpreted as an integer

````` As far as I understand, these methods are included based on thexarraydocumentation, so it should work as.min(),.max()or.mean()` are working fine: https://docs.xarray.dev/en/stable/generated/xarray.core.rolling.DataArrayRolling.argmax.html

Any insight on what I am doing wrong ?

 
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     xarray 13221727 issue

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