Dear R-Helpers,

I have a matrix where the first column is known. The second column is
the result of multiplying this first column with a constant "const". The
third column is the result of multiplying the second column with
"const".....
So far, I did it like this (as a simplified example):

nr.of.columns <- 4

myconstant <- 27.5

mymatrix <- matrix(numeric(0), nrow=5, ncol=nr.of.columns)

mymatrix[,1] <- 1:5

for (i in 2:nr.of.columns) {
	mymatrix[,i] <- myconstant * mymatrix[,i-1]
}


Can anyone give me some advice whether it is possible to avoid this loop
(and if yes: how)?

Any suggestions are welcome!

Thanks,
Roland




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