Displaying 1 result from an estimated 1 matches for "top5perst".
2007 Aug 31
3
by group problem
...3100 rows, with each row corresponding to a county within a state.
I want to return the top five "PercentOld" by state. But I want the County and the Value.
I tried this...
topN <- function(column, n=5)
{
column <- sort(column, decreasing=T)
return(column[1:n])
}
top5PerState <- tapply(data$percentOld, data$STATE, topN)
But this only returns the value for "percentOld" per state, I also want the corresponding County.
I think I'm close, but I just can't get it...
Thanks
cn
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