[R] How to count the number of sequences in matrix?

Hi R-users, I have a matrix similar to this. I would like to calculate the number of 1 sequences in a row and also the length of the 1 sequence. For instance, in the example below, row number one has four sequences of number 1 (from left to right: 1; 1; 1,1; 1) and the corresponding SeqCount is 4

Re: [R] How to count the number of sequences in matrix?

2))) I hope it helps. Best, Dimitris - Original Message - From: "Lauri Nikkinen" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Tuesday, November 13, 2007 2:07 PM Subject: [R] How to count the number of sequences in matrix? > Hi R-users, > > I hav

Re: [R] How to count the number of sequences in matrix?

Hi Lauri, A quick hack: a <- lapply(g, 1, rle) b <- sapply(a, function(x), x[[1]][x[[2]] == 1]) d <- cbind(rep(1:length(b), sapply(b, length)), rep(sapply(b, length), sapply(b, length)), unlist(b)) Best, Jim Lauri Nikkinen wrote: > Hi R-users, > > I have a matrix si