[R] enable object name to be called as object (a dataset)

[Giovanni Petris]

This should work:

do.call(cbind, lapply(1:length(obj), function(i) get(obj[i])[,1]))

Best,
Giovanni

> Date: Fri, 07 Sep 2007 14:42:07 -0700 (PDT)
> From: runner <sunnyside500 at gmail.com>
> Sender: r-help-bounces at stat.math.ethz.ch
> Precedence: list
> 
> 
> What I am trying to do is as follows:
> 
> - I have listed names of all wanted objects (datasets A,B,C... ) in current
> workspace as a vector: 
> 
> obj <- c('A','B','C')
> 
> - then i need to use these objects, say to extract all the 1st columns and
> bind to an existing dataset ('data'): 
>  
> for ( i in 1:3){
> newdata <- obj[i] 
> data <- cbind(data,newdata [[1]] )
> }
> 
> Obviously, it doesn't work since obj[i] is just a string of dataset name.
> Here is my question: how to call it as a original dataset? Thanks.
> -- 
> View this message in context: http://www.nabble.com/enable-object-name-to-be-called-as-object-%28a-dataset%29-tf4403933.html#a12563767
> Sent from the R help mailing list archive at Nabble.com.
> 
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> 

-- 

Giovanni Petris  <GPetris at uark.edu>
Associate Professor
Department of Mathematical Sciences
University of Arkansas - Fayetteville, AR 72701
Ph: (479) 575-6324, 575-8630 (fax)
http://definetti.uark.edu/~gpetris/