binned_sum implements fast tabulating for given bins by calling c-code.
It also returns the number of NA's per bin.
Please note that incorrect use of this function may crash your R-session.
the values of bins must be between 1 and nbins and may not contain NA.
The values of x must be between 1 and nlevels.
binned_tabulate(x, bin, nbins = max(bin), nlevels = nlevels(x), ...)# S3 method for default
binned_tabulate(x, bin, nbins = max(bin), nlevels = nlevels(x), ...)
# S3 method for ff
binned_tabulate(x, bin, nbins = max(bin), nlevels = nlevels(x), ...)
factor or integer vector with the data to be tabulated
integer vector with the bin number for each data point
integer maximum bin number
integer number of levels used in x
used by binned_tabulate.ff
numeric matrix where each row is a bin and each column a level