[R] Dummies in R
cepl at surfbest.net
Thu Apr 29 16:12:04 CEST 2004
On Thursday 29 of April 2004 07:49, Susana Bird wrote:
> my problem is following. I know Stata, but currently I have to
use R. Could You please help in finding the analogy to R.
I am too clueless about Stata, but I have another hint (check
"Introduction to R" whether I have guessed correctly for what
you want to do):
> g byte city=0
I have no clue what does it is supposed to mean (initialize city
with zeroes? But how can you test for its value then?).
> replace city=1 if city==12&year==2000
What about this?
city <- city[city == "12" & year == "2000"]
Take a look at this example:
> city <- cbind(rnorm(100,50,10),0)
> city[,2] <- as.logical(city[,1]<"50")
Does it make any sense to you?
Matej Cepl, http://www.ceplovi.cz/matej
GPG Finger: 89EF 4BC6 288A BF43 1BAB 25C3 E09F EF25 D964 84AC
138 Highland Ave. #10, Somerville, Ma 02143, (617) 623-1488
A modest little person, with much to be modest about.
-- Winston Churchill
More information about the R-help