To avoid downloading the same maps again and again, ggmap uses a "file drawer" to store the maps you've downloaded. By default, they will be stored in a session specific temporary directory which will be deleted each time you quit R. If you want them to persist across sessions, set the global option "ggmap.file_drawer".
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## Not run: if server is unresponsive, R check will fail file_drawer() dir(file_drawer()) # The first time you run this, the tiles are downloaded from the server map <- get_stamenmap() # The second time, the local cache is used so it's much faster map <- get_stamenmap() dir(file_drawer()) ## End(Not run)
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