Visualizing accessibility with choropleth maps

Abstract

We present a system to visualize accessibility to various destinations from essential institutions such as schools and hospitals to common attractions such as beaches. Our visualization system supports real-time computations of driving distances by leveraging the path coherent pairs (PCP) decomposition which allows for fast computation between thousands of points of interest. Our system allows users to import and switch between several datasets without any precomputation of road distances between specific entries in the dataset. We present a case study that demonstrates our visualization system generating Choropleth maps of accessibility to various destinations in the San Francisco Bay Area which could be used to guide tourism and event planning decisions.