resize: Resize an image

In webshot: Take Screenshots of Web Pages

Resize an image

Description

This does not change size of the image in pixels, nor does it affect appearance – it is lossless compression. This requires GraphicsMagick (recommended) or ImageMagick to be installed.

Usage

resize(filename, geometry)

Arguments

filename	Character vector containing the path of images to resize.
geometry	Scaling specification. Can be a percent, as in "50%", or pixel dimensions like "120x120", "120x", or "x120". Any valid ImageMagick geometry specifation can be used. If filename contains multiple images, this can be a vector to specify distinct sizes for each image.

Examples

if (interactive()) {
  # Can be chained with webshot() or appshot()
  webshot("https://www.r-project.org/", "r-small-1.png") %>%
    resize("75%")

  # Generate image that is 400 pixels wide
  webshot("https://www.r-project.org/", "r-small-2.png") %>%
    resize("400x")
}

webshot documentation built on July 9, 2023, 5:11 p.m.