[R] R dataset copyrights

[Soeren Groettrup]

Hi everybody,

I've been searching the web for quite a time now and haven't found a 
satisfying answer. I was wondering if the datasets provided within the R 
packages are open, and thus can be used in publications? Concretely, can 
the data, for example, be exported from R and uploaded in a different 
format (like csv) to a website to be accessible for students to work 
with the data in SPSS or Matlab? Is it enough to cite the source or 
paper or do I need a permission for every dataset?

Thanks in advance for your replies,
Sören Gröttrup