R devel - Jul 2009 - ordering dataframe for strata() (PR#13830)

I've been using strata(sampling) and found that if the dataframe to be 
sampled ("data") consists of repeated measures that are not sorted in 
order the run will fail on a given stratum.  Ordering the dataframe 
prior to using strata() eliminates this problem.

Thanks,
Eric

-- 
Eric Vander Wal
Ph.D. Candidate
University of Saskatchewan, Department of Biology,
112 Science Place, Saskatoon, SK., S7N 5E2

"Pluralitas non est ponenda sine neccesitate"

On Jul 14, 2009, at 2:10 PM, eric.vanderwal at usask.ca wrote:
> I've been using strata(sampling) and found that if the dataframe to be
> sampled ("data") consists of repeated measures that are not
sorted in
> order the run will fail on a given stratum.  Ordering the dataframe
> prior to using strata() eliminates this problem.
>
> Thanks,
> Eric


If you are reporting a bug, then as per the R FAQ and the Posting  
Guide, you are asked to report bugs on contributed packages to the  
package maintainer, not to the R Bug Repository.

If you are simply reporting curious behavior for the benefit of  
others, then please post it to R-help and do not report it as a bug. I  
would still contact the package maintainer, who may wish to add  
clarifications to the package/function documentation.

Marc Schwartz