hey, Rers
in Stata therer is a loop command ` ' which could do the following:
forvalue i=1/10 {
gen x`i'=expression
}
this will generate variable: x1,x2,,,,,x10. so, does R have a corresponding one
to this?
And one more very basic question: after I open a file and modify it, such as
generate some new variables and change some old ones, how to use the changed
dataset in analysis, except the method save and reload it?
I have tried but did not get the right thing done:
mydata<-read(flie=".....")
........
detach()
attach(names of my data set)
any answer are appreciated.
Nan
from Montreal
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