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Dear All, I am trying to fill in a blank vector ("a") with one value at a time, with the value of the number of rows in a randomized dataset with rowSums=0. Below is the code I've got so far, but what I want to be as the last line is " a[1st NA,]=nz" such that this will run until all of my NAs are replaced with an integer value based on randomizations.

Dear All, I wrote a function for cluster analysis to compute cophenetic correlations between dissimilarity matrices (using the VEGAN library) and cluster analyses of every possible clustering algorithm (SEE ATTACHED) http://old.nabble.com/file/p26288610/cor.coef.R cor.coef.R . As it is now, it is extremely long, and for the future I was hoping to find a more efficient way of doing this sort of

Dear All, I am trying to create an artificial binary matrix such that each cell has a probability of 0.048 of having a 1. So far the closest I've come is us by using a random poisson distribution with a mean of 0.048, but I can't figure out how to limit the max value to 1. Otherwise that would work fine it seems. Any suggestions? The main code I've got to create said matrix so far