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2011 Aug 24
3
ddply from plyr package - any alternatives?
Hello everyone,
I was asked to repost this again, sorry for any inconvenience.
I'm looking replacement for ddply function from plyr package.
Function allows to apply function by category stored in any column/columns.
Regular loops or lapplys slow down greatly because my unique combination
count exceeds 9000. Is there any available solution which allow me to apply
function by category?