Hi list, I would like to normalize a matrix (two actually for comparison) using iterative proportional fitting.
Using ipf() would be the easiest way to do this, however I can't get my head around the use of the function. More specifically, the margins settings... for a matrix: mat <- matrix(c(65,4,22,24,6,81,5,8,0,11,85,19,4,7,3,90),4,4) using fit <- ipf(mat,margins=c(1,1,1,1,0,1,1,1,1)) generates a matrix with just 1's. using fit <- ipf(mat,margins=c(100,100,100,100,0,100,100,100,100)) gives a segmentation fault and crashes R ! so how do you define the margin values to which to sum the row and column values in your matrix correctly? Kind regards, Koen ______________________________________________ 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.
