Dear all,

 

I am struggling with a small problem. By using aggregate, the empty subsets
are removed. I need each empty subset to be 0. Any suggestions will be
appreciated. 

 

Code:

 

edref = aggregate(rep(1,times=dim(eds)[1]),list(eds[,11], eds[,7],
eds[,27]), sum)

 

 

Thanks in advance,

 

Betty

 

 

 


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