you can use CLI for Dropbox and system function (I'm on Linux) R.
I have a png file (interpolation.png) in my shared folder, if I need a public link, I can do something like this:
getwd() [1] "/home/ahmadou/Dropbox/Public" system('dropbox puburl interpolation.png ', intern = TRUE) [1] "https://dl.dropbox.com/u/8750577/interpolation.png"
Hope for this help
dickoa
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