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andilabs/gist:6501685

Created September 9, 2013 21:20
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R: fast counting, aggreagating of values in data frame http://www.miskatonic.org/2012/09/24/counting-and-aggregating-r
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gistfile1.txt
library(plyr)
#zwroci tabele zawierajaca w pierwszej kolumnie liczbe ile-krotnie strona zostala oceniona, a w drugiej ile stron z calego zbioru dotyczyla tylokrotna ocena.
count(count(d_eval,"document_id"),"freq")
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