Tabulation for ff vectors
tabulate.ff takes the integer-valued ff vector bin and counts the number of times each integer occurs in it.
tabulate.ff(bin, nbins = max(bin, 1, na.rm = TRUE))
bin |
factor to be binned. |
nbins |
number of bins |
Behaviour of tabulate
integer vector or if FFRETURN is TRUE a ff vector
#create a vector of 10 million x <- ff(vmode="integer", length=1e7) # fill first 200 with values x[1:100] <- 1 x[101:200] <- 2 # lets count tabulate.ff(x)
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