returns a dimnamed matrix indicating with rho an arc from row
to column nodes (0 everywhere else) where rho is the
regression coefficient. Also conditional standard deviations can be
introduced as diagonal elements but mu coefficient are lost...
It is advisable to normalize the /nbn/ first.
Usage
rmatrix4nbn(nbn, stdev=TRUE)
Value
A dimnamed matrix
Arguments
nbn
The initial nbn object.
stdev
Indicates if the standard deviations must placed in the
diagonal positions.