Download an image of a Star Trek logo and return a ggplot object.
Usage
st_logo(url, file, keep = FALSE)
Value
a ggplot object
Arguments
url
character, the url of the image, must be one from the dataset
stLogos(). See example.
file
character, output file name. Optional. See details.
keep
logical, if FALSE (default) then file is only temporary.
Details
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().