Function to_floatable

xarray/computation/computation.py:940–952

(x: DataArray)

        return type(scalar)(1970, 1, 1)

    def to_floatable(x: DataArray) -> DataArray:
        if x.dtype.kind in "MO":
            # datetimes (CFIndexes are object type)
            offset = (
                np.datetime64("1970-01-01") if x.dtype.kind == "M" else _cfoffset(x)
            )
            return x.copy(
                data=datetime_to_numeric(x.data, offset=offset, datetime_unit="ns"),
            )
        elif x.dtype.kind == "m":
            # timedeltas
            return duck_array_ops.astype(x, dtype=float)
        return x

    if isinstance(data, Dataset):
        return data.map(to_floatable)