Quite frequently, only the upper or lower triangular portion of a given object needs to be copied, or, more generally, the upper or lower trapezoidal portion. The following call accommodates this situation: place HR here
place HR here The possible values for shape are given in Table
Note:Since as part of the copy the data may be transposed, there is an ambiguity as to whether the indicated shape applies to the input object or output object. We adopt the convention that it is the input object that determines the shape of the data to be copied.