[R] How to append to a data.frame?

[David Kreil]

Hi,

I have a data.frame that I need to construct iteratively.

At the moment, I'm doing:

d<-data.frame(x=c(),y=c(),z=());

# {and, within some loop}

  d<-rbind(d,data.frame(x=newx,y=newy,z=newz);


While this works, it is horribly verbose and probably not efficient, either. 
My real data.frame has, of course, many more columns, which can be of 
different modes.

I vaguely recall that in much earlier R versions the following worked

  d[dim(d)[1]+1,]<-c(newx,newy,newz);

but not anymore (both 1.7 and 1.8 give "subscript out of bounds").

Can anyone suggest a more elegant and/or efficient way of achieving this, 
please? Cc to this address highly appreciated.

With many thanks,

David.


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