Message-ID: <8A4B35ED-F0C5-48E2-BD41-B5FCEC53336D@comcast.net>
Date: 2012-11-06T19:43:47Z
From: David Winsemius
Subject: Column names containing ` in R
In-Reply-To: <1352208103052-4648553.post@n4.nabble.com>
On Nov 6, 2012, at 5:21 AM, Raji wrote:
> Hi,
>
> My data has column names which has ` character. For example ,
> *> names(dataframe)
> [1] "`region" "farmsize`" "farmincome" "maincrop" "claimvalue"*
>
> If i use these objects in my function, the following error is thrown.
>
> *lmm<-lm(``region`~farmincome)
> Error: attempt to use zero-length variable name*
>
> Is there a way, say an escape sequence or something similar in which we can
> give these objects with the colnames to R functions?
The mathod used inread.table is to call make.names()
> make.names(x)
[1] "X.region" "farmsize."
[3] "farmincome" "maincrop"
[5] "claimvalue"
--
David Winsemius, MD
Alameda, CA, USA