Re: [R] Vector from Matrix

2010-01-29 Thread Henrique Dallazuanna
Try this also: pmin(data.set[,1:100], data.set[,101:200])/colSums(data.set[,101:200]) On Fri, Jan 29, 2010 at 2:25 PM, Thiem Alrik wrote: > Dear Mailing List Members, > > the problem I've been grappling with für quite some time now is the following: > > I have a 100 rows x 200 columns matrix.

Re: [R] Vector from Matrix

2010-01-29 Thread David Winsemius
On Jan 29, 2010, at 11:25 AM, Thiem Alrik wrote: Dear Mailing List Members, the problem I've been grappling with für quite some time now is the following: I have a 100 rows x 200 columns matrix. data.set <- matrix(rnorm(2, 100, 200)) I am guessing that you wanted to type: data.set <

Re: [R] Vector from Matrix

2010-01-29 Thread Dennis Murphy
Hi: Using an inelegant loop... df <- matrix(rnorm(2), 100, 200) res <- numeric(100) for (i in 1:100) res[i] <- sum(pmin(df[, i], df[, 100 +i]))/sum(df[, 100 + i]) res HTH, Dennis On Fri, Jan 29, 2010 at 8:25 AM, Thiem Alrik wrote: > Dear Mailing List Members, > > the problem I've been gr