[R] Quick question!

[Mark Myatt]

Isabel Jones <statsonthebrain at yahoo.com> writes:

>Just a further quick question:
>
>If I have this:
>
>for(i in 1:n) {
>  subset <- data[which(data$id==i),]
>
>which returns the rows where I have the variable ID=1,
>how can I tell the same statement to return just
>column Y where ID=i?

The subset() function does this:

        For(i in 1:n) {
                ss <- subset(data, id == i, Y)
                }

Mark


--
Mark Myatt


-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
Send "info", "help", or "[un]subscribe"
(in the "body", not the subject !)  To: r-help-request at stat.math.ethz.ch
_._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._