Transforming matrix

At 15:56 10/04/2003 +0200, vous avez ?crit:

hi everybody,
anyone knows how we can transform a binary matrix with TRUE and FALSE to 0 
and 1 without looping?
Thx

I guess you mean:

  TRUE ==> 1
FALSE ==> 0

as this is the rule when logicals are converted into numerics. Then, if M 
is your matrix, you can do:

mode(M) <- "numeric"

If you actually want:

  TRUE ==> 0
FALSE ==> 1

then:

M <- !M
mode(M) <- "numeric"

should do it.

HTH

EP

---------------------------------


        [[alternate HTML version deleted]]

______________________________________________
R-help at stat.math.ethz.ch mailing list
https://www.stat.math.ethz.ch/mailman/listinfo/r-help