.fuseCom: Computes the intercorrelations of item composites
Description
The key matrix is used to specify any number of weighted item composites.
A correlation matrix of these composites is then computed and returned.
Usage
.fuseCom(r_mat, key_mat)
Arguments
r_mat
A correlation matrix.
key_mat
A matrix with one row for each composite and one column for
each item contained in r_mat. The value if each element corresponds
to the weight given to an item.