Download an image of a Star Trek logo and return a ggplot object.
st_logo(url, file, keep = FALSE)character, the url of the image, must be one from the dataset
stLogos(). See example.
character, output file name. Optional. See details.
logical, if FALSE (default) then file is only temporary.
a ggplot object
By default the downloaded file is not retained (keep = FALSE). The filename
is derived from url if file is not provided. These files are all .gif.
Whether or not the output file is kept, a ggplot object of the image is returned.
For more information on attribution, see stLogos().
if (FALSE) st_logo(stLogos$url[1]) # \dontrun{}