ffbase (version 0.6-2)

binned_sum: Fast summing in different bins

Description

binned_sum implements fast summing for given bins by calling c-code.

Usage

binned_sum(x, bin, nbins = max(bin))

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

Arguments

x

numeric vector with the data to be summed

bin

integer vector with the bin number for each data point

nbins

integer maximum bin number

...

passed on to chunk

Value

• numeric matrix where each row is a bin