Mapping your travels with R

I’ve always wanted one of those wall maps that you can push pins into to show where all you’ve been. However, with college and grad school and whatnot, I’ve never really had the energy to put one up, since I know I’ll just have to take it down the next time I move. Then, something occurred to me: I like maps. I like traveling. I like R. So why not spend a night putting them all together?