plyr (version 1.0.1)

splat: `Splat' arguments to a function.

Description

`Splat' arguments to a function. Wraps a function in do.call

Usage

splat(flat)

Arguments

flat

function to splat

Value

• a function

Details

This is useful when you want to pass a function a row of data frame or array, and don't want to manually pull it apart in your function.

Examples

hp_per_cyl <- function(hp, cyl, ...) hp / cyl
splat(hp_per_cyl)(mtcars[1,])
splat(hp_per_cyl)(mtcars)

f <- function(mpg, wt, ...) data.frame(mw = mpg / wt)
ddply(mtcars, .(cyl), splat(f))