I vote to 'fortunize' Doug Bates on Hierarchical data sets: which software to use?
"The widespread use of spreadsheets or SPSS data sets or SAS data sets which encourage the "single table with a gargantuan number of columns, most of which are missing data in most cases" approach to organization of longitudinal data is regrettable." http://n4.nabble.com/Hierarchical-data-sets-which-software-to-use-td1458477.html#a1470430 -- Peter Ehlers University of Calgary ______________________________________________ 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.
