[R] using the sink() function in a for-look

[Rolf Turner]

On 1/05/2008, at 4:40 PM, Johannes Hüsing wrote:

> Tony Dell <anthony.dell at jcu.edu.au> [Thu, May 01, 2008 at  
> 04:32:23AM CEST]:
>> hi all,
>>
>> i wanted to use the sink function to sequentially output regression
>> summaries within a for-loop. i must have something wrong somewhere  
>> (or be
>> using the sink function incorrectly), but can anyone help?
>>
>> the code I am using is:
>>
>
> Please use code and data which is reproducible for us. As we don't  
> have
> access to your data, we'd have to construct some of our own.
>
> This code, however, has the same effect:
>
> for (i in 1:100) {
>     sink("./sometext.txt", append=TRUE)
>     summary(rnorm(80))
>     sink()}
>
>
> When you do the following:
>
> for (i in 1:100) {
>     summary(rnorm(80))}
>
> what output do you get?

	He'd get nothing at all.

	Did you ***try*** your code?

> And all this output

	``All this output''!  Consisting of the empty set !!!

> is redirected to your file by sink(), so it works
> as expected.

	That all depends on what you expect, I guess.  Most people
	would expect to get some output.  As Tony expected.

		cheers,

			Rolf Turner

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