From ripley@stats.ox.ac.uk  Sat Dec  8 10:18:34 2001
From: ripley@stats.ox.ac.uk (Prof Brian Ripley)
Date: Sat, 8 Dec 2001 10:18:34 +0000 (GMT)
Subject: [Rd] question
In-Reply-To: <3C11DB2F.C8F7BFC6@univie.ac.at>
Message-ID: <Pine.LNX.4.31.0112081012530.5020-100000@gannet.stats>

On Sat, 8 Dec 2001, Erich Neuwirth wrote:

> here is the example
>
> this is how i read my data
>
> assign("oldfilename","d:\\documents\\wahl99\\nrw95testin.csv",envir=.GlobalEnv)
> olddata<-read.csv(oldfilename,as.is=TRUE,sep=";",header=FALSE,
> col.names=c("nr","name","wb95","abg95","glt95",
>         "sp95","vp95","fp95","gr95","lif95"))
>
>
> when i then compute
> olddata["sp95"]/olddata["wb95"]
>
> r 1.3.1 is ok,
> and r 1.4.0 says
>
> Error in FUN(left, right) : non-numeric argument to binary operator

Well, actually 1.3.1 was not behaving as documented:

   as.is: the default behavior of `read.table' is to convert
...
          numeric indices which specify which columns should be left as
          character strings.

and 1.4.0 is.  I'll revert the behaviour and correct the documentation.


The `as.is' argument has been superseded anyway by `colClasses'.

-- 
Brian D. Ripley,                  ripley@stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272860 (secr)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595

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[Rd] question
Prof Brian Ripley