- [sftrack ](https://github.com/mablab/sftrack )package - notes by [Edzer Pebesma](https://edzer.github.io/UseR2016/) - a long list of other packages [here](https://gist.github.com/mdsumner/0a3cb0e58bf9d37b782943ac269e1eff), organized by @mdsumner
