Using FTDA to Initialise a Matrix with a Vector in METSIM

A matrix, or an array, is often a collection of row vectors - with additional vectors being appended.

The mathematical function FTDA can be used to convert a vector into a single row matrix.  This simplifies the coding of many APL data manipulations in METSIM.

This function is similar to FCOL, which converts a vector to a single column array.