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acutally
2013 Mar 15
5
Data manipulation
Hello all,
I would appreciate your thoughts on a seemingly simple problem. I have a
database, where each row represent a single record. I want to aggregate this
database so I use the aggregate command :
D<-read.csv("C:\\Users\\test.csv")
attach(D)
by1<-factor(Class)
by2<-factor(X)
W<-aggregate(x=Count,by=list(by1,by2),FUN="sum")
The results I