This dataset contains a subset of the fuel economy data that the EPA makes
available on <url>http://fueleconomy.gov</url>. It contains only models which
had a new release every year between 1999 and 2008 - this was used as a
proxy for the popularity of the car.

datasets

An implementation of the grammar of graphics in R. It combines the
    advantages of both base and lattice graphics: conditioning and shared axes
    are handled automatically, and you can still build up a plot step by step
    from multiple data sources. It also implements a sophisticated
    multidimensional conditioning system and a consistent interface to map
    data to aesthetic attributes. See http://ggplot2.org for more information,
    documentation and examples.

Hadley Wickham

ggplot2

An Implementation of the Grammar of Graphics

mpg function

A data frame with 234 rows and 11 variables
<ul><li>manufacturer.</li><li>model.</li><li>displ. engine displacement, in litres</li><li>year.</li><li>cyl. number of cylinders</li><li>trans. type of transmission</li><li>drv. f = front-wheel drive, r = rear wheel drive, 4 = 4wd</li><li>cty. city miles per gallon</li><li>hwy. highway miles per gallon</li><li>fl.</li><li>class.</li></ul>

format

Fuel economy data from 1999 and 2008 for 38 popular models of car

A system for 'declaratively' creating graphics,
based on "The Grammar of Graphics". You provide the data, tell 'ggplot2'
how to map variables to aesthetics, what graphical primitives to use,
and it takes care of the details.

mpg: Fuel economy data from 1999 and 2008 for 38 popular models of car

Description

Usage

Arguments

format