Hi, I have a dataset with info on individuals (B) that have been involved in projects (A) during multiple years (C). The dataset contains three columns: A, B, C. Example: A B C 1 1 a 1999 2 1 b 1999 3 1 c 1999 4 2 c 2001 5 2 d 2001 6 3 a 2004 7 3 b 2004
I am interested in the average tenure of all individuals for each project (assuming that the tenure of an individual = 0 in the first project this individual is involved in). So based on the data above: A D 1 1 0 2 2 1 3 3 5 where D = average project tenure. How do I do this? Your help is very much appreciated. Thanks! -- View this message in context: http://r.789695.n4.nabble.com/Data-manipulation-tp3302717p3302717.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
