Using a downloaded SVG

library(ggplot2)
library(ggsvg)

Using an SVG icon from the web

This example grabs an SVG from the internet and then uses it as a plotting glyph without further modification.

#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
# Read SVG from the web
#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
car_url <- 'https://www.svgrepo.com/download/114837/car.svg'
car_svg <- paste(readLines(car_url), collapse = "\n")

grid::grid.draw( svg_to_rasterGrob(car_svg) )

ggplot(mtcars) + 
  geom_point_svg(
    aes(mpg, wt),
    svg = car_svg,
    size = 8
  ) + 
  theme_bw()