R caret

caret (Classification And REgression Training) is a library of functions for model training.

Contents

Installation

install.packages('caret')

The createDataPartition function randomly partitions a vector of outcomes.

data(mtcars)

parts = createDataPartition(mtcars$mpg, p = .8)
train = mtcars[parts, ]
test = mtcars[-parts, ]

createDataPartition returns a list object. To instead return a matrix, pass list = FALSE as an option.