Displaying 1 result from an estimated 1 matches for "tp2007152p2007152".
2010 Apr 16
4
score counts in an aggregate function
...e me a data.frame for the counts!!
Something like this::
counts <- data.frame(aggregate(mydata[,
4:5],by=list(mydata$userid),FUN="count", na.rm="TRUE")).
Any advice?
Trevor
Belgium
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