SciencesPo (version 1.3.9)

psum: The Missing R Parallel Sum

Description

Provides parallel sum like pmin and pmax from the base package. The function sum simply does not help when the objective is to obtain a vector with parallel sum rather than a scalar value.

Usage

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

Arguments

na.rm

A logical value TRUE or FALSE, the default

...

One or more unit objects

Value

• A vector containing the parallel sum.

encoding

UTF-8

Examples

if (interactive()) {
n <- 20;
mydat <- data.frame(PT = rnorm(n, mean = .30),
PSDB = rnorm(n, mean = .25), PSB = rnorm(n, mean = .15));
head(mydat);
transform(mydat, DK = psum(PT, PSDB, PSB - 1));
}