[R] for (i in ...) { df[[i]]<- .....}

[Prof Brian Ripley]

PLEASE don't call methods explicitly.

I think

	do.call("cbind", cc)

is what you are looking for, although probably you should be calling 
data.frame not cbind here.  (Your lines are too long and contain no spaces 
so I am not going to try to fathom out what cc[[i]] really is.  But I am 
sure you do not intend the cbind to be inside the loop.)

On Fri, 27 Aug 2004, Luis Rideau Cruz wrote:

> In the following loop :
> 
> for(i in 1:8)
> {
> cc[[i]]<-tapply(test[,i+6],list(puntar=test$puntar),sum)/tapply(test[,5],list(puntar=test$puntar),sum)
> 
> cbind.data.frame(cc[[1]],cc[[2]],cc[[3]],cc[[4]],
> cc[[5]],c[[6]],cc[[7]],cc[[8]])
> 
> }
> 
> Is there anyway I can 'cbind.data.frame' the objects cc[[ i ]] without
> actually writing every single element??
> In this case there are 8 but what if it is a large number??

-- 
Brian D. Ripley,                  ripley at 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 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595