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Changing zeros to NAs in a data frame

Andy Bunn 
This isn't pretty but it's a way to do it:

foo <- data.frame(x = c(1,0,1,1,0,2,4), y = as.factor(c(0,2,1,1,0,3,1)))
Zero2NA <- function(x){
    if(is.numeric(x)) { x[x == 0] <- NA; }
    return(x)
}
foo2 <- as.data.frame(lapply(foo, Zero2NA))
foo
foo2

HTH, Andy

Thread (4 messages)

Laura Holt Changing zeros to NAs in a data frame Nov 16 Sundar Dorai-Raj Changing zeros to NAs in a data frame Nov 16 Andy Bunn Changing zeros to NAs in a data frame Nov 16 Brian Ripley Changing zeros to NAs in a data frame Nov 16