def argmin(self, axis=None, *args, **kwargs): """ Returns the indices of the minimum values along an axis. See `numpy.ndarray.argmin` for more information on the `axis` parameter. See also -------- numpy.ndarray.argmin """ nv.validate_argmin(args, kwargs) i8 = self.asi8 if self.hasnans: mask = self._isnan if mask.all(): return -1 i8 = i8.copy() i8[mask] = np.iinfo('int64').max return i8.argmin()