[R] Grouping sets of data, performing function and re-assigning values

Johnny Tkach johnny.tkach at utoronto.ca
Fri Aug 27 19:28:57 CEST 2010

Hi all,

Since I could not attach a file to my original e-mail request, for those who want to look at an example of a data file I am working with, please use this link:


Thanks again,


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