ggpng: Create a picture with a transparent background.

In ch: About some Small Functions

Description

Use the ImageMagick command line to convert the PDF saved by ggplot2 to PNG format with a transparent background and to set the resolution.

Usage

ggpng(x, dpi = 600, ...)

ggPNG(x, p, dpi = 600, ...)

Arguments

x	A file name that does not have a suffix.
dpi	The default dpi is 600. You can enhance the dpi value to produce a higher resolution PNG file.
...	see :ggsave
p	ggplot2 object

Details

You need to install ImageMagick! Please check if the ImageMagick is added to the environment variable.

this ggplot2 object will automatically add a theme with a transparent background.

Value

You will get a PNG file with the result drawn by ggplot2.

Author(s)

Chai

ch documentation built on July 9, 2021, 9:07 a.m.