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2011 Mar 28
2
rep for multiple categories
Hi, I am R beginner and am trying to figure out how to generate a complete list of species for every point, visit, and year. The code below is close but does not give me a list of species for every point, visit, and year in my data set. spplist<-unique(sumPtCt$Species) spplength<-length(spplist) Pointlist<-unique(sumPtCt$Point) Pointlength<-length(Pointlist) Visitlist<-unique(sumPtCt$Visit) Visitlength<-length(Visitlist) Yearlist<-unique(sumPtCt$Year) Yearlength<-length(Yearlist) s<-rep(spplist, each=Pointlength, Visitlength, Year...