ronggui wrote:
I think you have to recode the derived variable of as.numeric(z).
The easiest way is probably to use indexing:
> z <- c("male", "male", "female")
> z <- factor(z)
> c(5,3)[z]
[1] 3 3 5
or, slightly more foolproof
> c(male=3,female=5)[as.character(z)]
male male female
3 3 5
On Sun, Jan 18, 2009 at 12:40 AM, Jörg Groß <jo...@licht-malerei.de> wrote:
Hi,
I know how to convert a factor-variable into a numeric variable via
as.numeric().
But how can I control the values that are assigned?
For example, I have this factor-variable:
z <- c("male", "male", "female")
z <- as.factor(z)
And I want to convert male in 3 and female into the numeric value 5 (just
for the example)
so that I get:
[1] 3 3 5
Thanks for any help!
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