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Hi No problem with eigen (also in the asymmetric case, unless you set the option symmetric=T for an asymmetric matrix) or svd. I think your problem is here: > Pi2<-Pi %*% t(Pi) #that means Pi2 is symmetric and the...
>> My question: Are there equivalents to colSums in R? I don't think there are functions for doing this, but you can speed up things a lot by using matrix operations instead of apply if this is possible: > x <- matrix...
Hi Kaspar, > to the list: Is there a possibility to compute partial correlation > coefficients between multiple variables pcor2 works also generrally (not only for 3 vars): #pcor from David Lucy (only for 3 vars) pcor <- function(v1, v2, v3) { c12...
Dear all I'm having some trouble with a bound-constrained optimization using optim(...,method="L-BFGS-B"). Usually, everything works fine, but for some simulations, the algorithm just gets stuck. When I let my function (+gradient) evaluation print out...
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