I can think of many brute-force ways to do this outside of R, but was wondering if there was a simple/elegant solution within R instead.
I have a table that looks something like the following: Factor1 Factor2 Value A 11/11/2009 5 A 11/12/2009 4 B 11/11/2009 7 B 11/13/2009 8 >From that I need to generate all permutations of Factor1 and Factor2 and force a 0 for any combination that doesn’t exist in the actual data table. By way of example, I’d like the output for above to end up as: Factor1 Factor2 Value A 11/11/2009 5 A 11/12/2009 4 A 11/13/2009 0 B 11/11/2009 7 B 11/12/2009 0 B 11/13/2009 8 Truly appreciate any thoughts. -- View this message in context: http://n4.nabble.com/Correcting-for-missing-data-combinations-tp961301p961301.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.
