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2010 Nov 10
1
Inserting Missing Data
...classes. I need to insert data on size class one into a data frame that already has data on size classes two through four. The data can be merged by their cave name, year, month, region (near or far from cave entrance), plot #, and Individual (IndID). For example: (Embedded image moved to file: pic14606.jpg) As one example, I have data for size class (SC) one I can insert after IndID #4 in the data above. However, when I attempt to merge these two data frames using the following commands: "Hs.full.anal<-merge(Hs.short.missgval,SC1_0608, byx=c(Cave,Year,Month,Region,Plot,IndID),...