Hi all I want to conditionally operate on certain elements of a matrix, let me explain it with a simple vector example
> z<- c(1, 2, 3) > zz <- c(0,0,0) > null <- (z > 2) & ( zz <- z) > zz [1] 1 2 3 why zz is not (0, 0, 3) ????? the null <- assignment is to keep the console silent in the other hand, it curious that null has reasonable values > null [1] FALSE FALSE TRUE Thanks in advance Ulisses Debian GNU/Linux: a dream come true ----------------------------------------------------------------------------- "Computers are useless. They can only give answers." Pablo Picasso Humans are slow, innaccurate, and brilliant. Computers are fast, acurrate, and dumb. Together they are unbeatable ---> Visita http://www.valux.org/ para saber acerca de la <--- ---> Asociación Valenciana de Usuarios de Linux <--- ______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html