[R] keep empty subsets using aggregate

2009-11-24 Thread Fang (Betty) Yang 
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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Re: [R] keep empty subsets using aggregate

2009-11-24 Thread David Winsemius 


On Nov 24, 2009, at 5:03 PM, Fang (Betty) Yang wrote:


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)



That's the code, but where is the sample data?:

E.g.:
dput(eds)

Or:

dput( head(eds, 30) )

Or:

dump(eds, stdout() )


--
David Winsemius, MD
Heritage Laboratories
West Hartford, CT

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