•An apparent
limitation of ZPL (so far) is: Only arrays of like rank can be combined
–Element-wise operators combine corresponding elements: [R] A := B+C;
–Sometimes
combining arrays of different rank is needed. E.g. Scale the elements of each
row by
the row maximum
•Find the row maximum:
2 dimension reduced to 1 dimension
•Divide
each element of the row by its row max: 1 dimension applied to 2 dimensions