Add a logo to your plot

Put a bird on it - Portlandia.

Table of Contents

• Magic with magick!
• Building a ggplot with a logo
  • Read in a plot
  • Where to put the logo?
  • Add the logo
  • Put it in a function! (Bird not included)
  • The function details

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via GIPHY

If you missed out on Portlandia, you should take some time to watch this clip of the “Put a bird on it” episode.

Just like Bryce and Lisa - we can put birds on anything with the magick package from ROpenSci!

So let’s get started putting birds on things!

Magic with magick!

The magick package is an R interface to the ImageMagick STL, one of the most comprehensive open source image processing libraries. It gives a lot of power to R users, and we’ll briefly cover the workflow before getting into our real example.

If you want a deeper dive on all the features of magick, check out their awesome vignette!

# Load the library
library(magick)

# "read" in an image
dog <- image_read("https://images.pexels.com/photos/1564506/pexels-photo-1564506.jpeg?auto=compress&cs=tinysrgb&dpr=2&h=650&w=940")

image_info(dog)

  format width height colorspace matte filesize density
1   JPEG  1880   1208       sRGB FALSE    87114   72x72

We can see a few things about the r_logo object, it is a .png, it’s height and width, filesize, and DPI/density.

We can also view the image in line.

print(dog)

  format width height colorspace matte filesize density
1   JPEG  1880   1208       sRGB FALSE    87114   72x72