transportation

Introduction Understanding the reach and effectiveness of public transit is important to understand how urban environments are accessible for different groups of people.

Introduction Some transportation networks are intuitive to understand as networks. We can easily visualize intersections as nodes and roadways as edges in a road network.

Introduction In other posts, I have shown how to use external servers (google, craigslist etc.) to access information. You can also query a local (on your computer) server and your R session acts like a client (e.