[R] Looping through series of names

[Petr PIKAL]

Hallo

r-help-bounces at stat.math.ethz.ch napsal dne 11.04.2007 22:45:19:

> Hi
> I am very new to R and have not able to find the answer to my question
> in the manual or any other post.  I have a dataset that has various
> different sites names with data relating to each site.  The data is in
> one dataset.  I want to loop through the different site names and
> perform my test on each site.  The sites are named not numbers for
> example "YYC".  How do I do this.  I hope I was clear enough.
> Thanks for the help 

Instead of looping try to look at aggregate, tapply or by. And give a 
quick look to posting guide where you can find some general rules and 
hints what to do before posting and how to formulate your question to get 
helpful answer.

Regards
Petr

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