upperMaCoord gets pairwise combinations for 'n' elements; return matrix with x & y coordinates to form all pairwise groups for n elements.
But no distinction of 'upper' or 'lower' possible like in triCoord
Usage
upperMaCoord(n)
Value
2-column matrix wiyh indexes for all pairwise combnations of 1:n
Arguments
n
(integer) number of elements for making all pair-wise combinations