This help topic is for R version 1.5.0. For the current version of R, try https://stat.ethz.ch/R-manual/R-patched/library/base/html/sum.html
sum {base}R Documentation

Sum of Vector Elements

Description

sum returns the sum of all the values present in its arguments. If na.rm is FALSE an NA value in any of the arguments will cause a value of NA to be returned, otherwise NA values are ignored.

Usage

sum(..., na.rm=FALSE)

Arguments

...

numeric or complex vectors.

na.rm

logical. Should missing values be removed?

Value

The sum. If all of ... are of type integer, then so is the sum, and in that case the result will be NA (with a warning) if integer overflow occurs.


[Package base version 1.5.0 ]