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...n later analysis) and a total of about 7000 cases(rows). i mention the dimensions of the actual data because im wondering if my below process would encounter problems with more data. To be sure the problem occurs in the last step. Is$NotTooSmall gives me a binary output that is then put back in MultiLotBldgs.. (as shown in the example) to return the cases i want to keep. In my actual data the binary designation is correct but when MultiLotBldgs2.. returns it doesnt remove the cases that are False in Is$NotTooSmall. Like i said my sample data works fine but my actual implementation does not. Any su...

For the following: Bldgid<-c(1000,1000,1000,1001,1002,1003,1003,1003) Maplot<-c(20000,20001,20002,30000,30001,40000,40001,40002) Area<-c(40,170,160,50,100,100,90,110) #Construct Sample dataframe MultiLotBldgs..<-data.frame(Bldgid,Maplot,Area) CondoLots_ <- tapply(MultiLotBldgs..$Maplot, MultiLotBldgs..$Bldgid, length) CondoLots_ Returns: 1000 1001 1002 1003 3 1 1 3 What i want to do is to subtract 1 from the above for all cases where there are more than one, so that CondoLots_...