[R] problem with for()

[Peter Dalgaard]

Simone Gabbriellini <ogabbrie at tin.it> writes:

> Dear list,
> can someone tell me why this two pieces of code give me the same  
> results?
> 
>  > for(i in 0:5){ sum[i] = i }
>  > sum
> [1] 1 2 3 4 5
> 
>  > for(i in 1:5){ sum[i] = i }
>  > sum
> [1] 1 2 3 4 5
> 
> shouldn't the first one be
> 
> 0 1 2 3 4 5

No. Indexing starts at 1 in R.

Next, figure out this:

> sum=0
> for(i in 5:-5){ sum[i] = i }
> sum
[1] -5 -5 -5 -5 -4


-- 
   O__  ---- Peter Dalgaard             Øster Farimagsgade 5, Entr.B
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