search for: 04f0d6dd

Displaying 1 result from an estimated 1 matches for "04f0d6dd".

2010 Dec 18
2
testing with if: what I am doing wrong?
I am running this small program: x <- factor(c("A","B","A","C")) y <- c(1,2,3,4) w <-data.frame(x,y) if (w$x=="A"){ w$z=1 } w And I obtain: x y z 1 A 1 1 2 B 2 1 3 A 3 1 4 C 4 1 And not x y z 1 A 1 1 2 B 2 NA 3 A 3 1 4 C 4 NA Like I should obtain. What am I doing wrong? Please notice that I get a warning approximately saying -