ggplot2 (version 0.9.0)

ggsave: Save a ggplot with sensible defaults

Description

ggsave is a convenient function for saving a plot. It defaults to saving the last plot that you displayed, and for a default size uses the size of the current graphics device. It also guesses the type of graphics device from the extension. This means the only argument you need to supply is the filename.

Usage

ggsave(filename = default_name(plot), plot = last_plot(),
    device = default_device(filename), path = NULL,
    scale = 1, width = par("din")[1],
    height = par("din")[2], units = c("in", "cm", "mm"),
    dpi = 300, ...)

Arguments

filename

file name/filename of plot

plot

plot to save, defaults to last plot displayed

device

device to use, automatically extract from file name extension

path

path to save plot to (if you just want to set path and not filename)

scale

scaling factor

width

width (defaults to the width of current plotting window)

height

height (defaults to the height of current plotting window)

units

units for width and height when either one is explicitly specified (in, cm, or mm)

dpi

dpi to use for raster graphics

...

other arguments passed to graphics device

Details

ggsave currently recognises the extensions eps/ps, tex (pictex), pdf, jpeg, tiff, png, bmp, svg and wmf (windows only).

Examples

ratings <- qplot(rating, data=movies, geom="histogram")
qplot(length, data=movies, geom="histogram")
ggsave(file="length-hist.pdf")
ggsave(file="length-hist.png")
ggsave(ratings, file="ratings.pdf")
ggsave(ratings, file="ratings.pdf", width=4, height=4)
# make twice as big as on screen
ggsave(ratings, file="ratings.pdf", scale=2)