[R] calling a var by name in another var

[Dimitris Rizopoulos]

look at ?get, this is also in R-FAQ 7.21

get(myvar1) + get(myvar2)


Best,
Dimitris

----
Dimitris Rizopoulos
Ph.D. Student
Biostatistical Centre
School of Public Health
Catholic University of Leuven

Address: Kapucijnenvoer 35, Leuven, Belgium
Tel: +32/16/396887
Fax: +32/16/337015
Web: http://www.med.kuleuven.ac.be/biostat/
     http://www.student.kuleuven.ac.be/~m0390867/dimitris.htm


----- Original Message ----- 
From: "Oskar Villani" <o.villani at utanet.at>
To: <r-help at stat.math.ethz.ch>
Sent: Thursday, November 04, 2004 2:58 PM
Subject: [R] calling a var by name in another var


> Hello list,
>
> I'd like to use a variable (or a column of a data frame) by using 
> its name as a
> string. E.g.:
>
> Data2003 <- c(150,200,120)
> Data2004 <- c(145,211,110)
>
> myvar1 <- "Data2003"
> myvar2 <- "Data2004"
>
> # now I'd like do do this
>
> total <- Data2003 + Data2004
>
> # in any way like
> # total <- ???(myvar1, myvar2)
> # or
> # total <- ???(myvar1) + ???(myvar2)
> # or something like that
>
> Is there a possibility to do this in R - can't find a solution!
>
> Thanks a lot
>
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