So you *can* do it.  There is a question
remaining of whether you *should* do it.
More R-ish is to use a list.

On 04/08/2010 01:39, jim holtman wrote:
?paste
?assign

On Tue, Aug 3, 2010 at 8:29 PM, Hey Sky<heyskywal...@yahoo.com>  wrote:
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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--
Patrick Burns
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http://www.burns-stat.com
(home of 'Some hints for the R beginner'
and 'The R Inferno')

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