replace_variable: Replaces a variable in the dataframe.

In robertzk/syberiaMungebits: Common mungebits used with Syberia projects.

Description

Replaces a variable in the dataframe.

Usage

replace_variable(df, fun)

Arguments

df	dataframe. The dataframe to modify.
fun	function. The function to run to convert the input into the new input. Whichever argument is passed first to the function is the variable that will be replaced.

Value

Does not return anything, but modifies-in-place the dataframe to replace that variable.

Author(s)

Peter Hurford

Examples

# Repaces Sepal.Width to add 1 to each datapoint.
replace_variable(iris, function(Sepal.Width) { Sepal.Width + 1 })

# Repaces Sepal.Length to add the corresponding Sepal.Width to each datapoint for Sepal.Length.
replace_variable(iris, function(Sepal.Length, Sepal.Width) { Sepal.Width + Sepal.Length })

# Usage in a Syberia file
list("Replace Sepal.Length with Sepal.Length + 1" = list(
 replace_variable,
 function(Sepal.Length) Sepal.Length + 1
))

robertzk/syberiaMungebits documentation built on July 30, 2019, 3:37 p.m.