Hi, I have a 100x15 matrix and in each row a set of 15 random numbers out of 25. for example:
b <- c(1:25) a <-matrix(0,10,15) for (i in 1:10){ a[i,] <- sample(b,15,replace = FALSE) } I would like to create another matrix (25x100), for example "d" with the probability of each number from the first matrix Therefore I need to track, for example, if number 1 is present in the first row (d[1,1]) (which would give me an probability of 1 out of 1). Then, track again if number 1 is present on the second row (d[2,1]) (And if not, the probability would be 1 out of 2 = 0.5)...and so on for all the 25 collumns (25 numbers) and all the 100 rows. Could anybody help how to do it?? Thanks in advance Marcio -- View this message in context: http://n4.nabble.com/how-to-track-a-number-in-a-row-tp1011787p1011787.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.