Preview a saved PNG in an R device window

Question

Is there a way print an existing PNG file to the device window, for example, let\'s say that you have saved a plot as PNG but you would like to preview it (for sanity) befor

Answer 1

Baptiste's answer didn't work for me while using RStudio in Linux. I had to remove the system.file() call.

library(png)
img <- readPNG('/path/image.png')
grid::grid.raster(img)

Answer 2

Use ImageMagick library for all your image processing needs. It is brought to you as magick package to R. See the introductory vignette.

install.packages('magick')

img <- magick::image_read('/path/image.png')
plot(img) # or print(img)

Answer 3

You can import it and display it in R,

library(png)
img <- readPNG(system.file("img", "Rlogo.png", package="png"))
grid::grid.raster(img)