binned_tabulate: Fast tabulating in different bins

In ffbase: Basic Statistical Functions for Package 'ff'

Description

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.

Usage

binned_tabulate(x, bin, nbins = max(bin), nlevels = nlevels(x), ...)

## Default S3 method:
binned_tabulate(x, bin, nbins = max(bin), nlevels = nlevels(x), ...)

## S3 method for class 'ff'
binned_tabulate(x, bin, nbins = max(bin), nlevels = nlevels(x), ...)

Arguments

x	factor or integer vector with the data to be tabulated
bin	integer vector with the bin number for each data point
nbins	integer maximum bin number
nlevels	integer number of levels used in x
...	used by binned_tabulate.ff

Value

numeric matrix where each row is a bin and each column a level

ffbase documentation built on Feb. 27, 2021, 5:06 p.m.