Displaying 1 result from an estimated 1 matches for "makefactor".
2001 Jul 17
3
variable number of variables in data frames
I would like to specify that certain columns in a data frame should be
treated as ordered factors. I know what numbers these columns are, but
not their names.
How do I do this?
For example, if I know columns 1:4 are to be treated as factors, I can
write
dat <- matrix(c(2,1,1,1, 1,1,1,1), 2, 4)
D <- as.data.frame(dat)
# force all variables to be treated as binary
# regardless of the small