[R] Q: appending to non-existent vector?

[(Ted Harding)]

On 21-Sep-07 17:15:08, D. R. Evans wrote:
> This is a real newbie question. What makes it worse is that I know
> I've seen the answer somewhere, but I can no longer find it.
> 
> If I have a loop that is supposed to generate a vector piecemeal,
> adding an element each time through the loop, what do I do to stop it
> failing the first time around the loop, when the vector doesn't yet
> exist (so I can't use the append() function)?

I always use NULL, as in:

x<-NULL
for(...){ ... ; x<-c(x,...)}

It has not let me down yet!
Best wishes,
Ted.

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Date: 21-Sep-07                                       Time: 22:33:26
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