xarray.core.groupby.DatasetGroupBy.apply¶
-
DatasetGroupBy.
apply
(func, **kwargs)¶ Apply a function over each Dataset in the group and concatenate them together into a new Dataset.
func is called like func(ds, *args, **kwargs) for each dataset ds in this group.
Apply uses heuristics (like pandas.GroupBy.apply) to figure out how to stack together the datasets. The rule is: 1. If the dimension along which the group coordinate is defined is
still in the first grouped item after applying func, then stack over this dimension.- Otherwise, stack over the new dimension given by name of this grouping (the argument to the groupby function).
Parameters: func : function
Callable to apply to each sub-dataset.
**kwargs
Used to call func(ds, **kwargs) for each sub-dataset ar.
Returns: applied : Dataset or DataArray
The result of splitting, applying and combining this dataset.