moscot.utils.subset_policy.TriangularPolicy.create_mask¶ TriangularPolicy.create_mask(value, *, allow_empty=False)¶ Create a mask used to subset the data. Parameters: value (Union[TypeVar(K, bound= Hashable), Sequence[TypeVar(K, bound= Hashable)]]) – Values in the data which determine the mask. allow_empty (bool) – Whether to allow empty mask. Return type: ndarray[Any, dtype[float64]] Returns: : Boolean mask of the same shape as the data.