01 · Spatial Access Analysis

The Shadow Cost Project

R Drive-Time Isochrones Census API rgeoda · Spatial Interpolation Mapbox API gganimate
1

Background & motivation

I spent a year and a half at Cornell's Brooks School mapping who can actually reach criminal legal service providers across six California counties, so Alameda County isn't new territory for me. A provider can be listed as serving a county on paper and still be completely out of reach for the people who need it most.

2

Explore the maps

Provider data source
County
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These embedded maps show the 10-min and 30-min driving isochrone bands (toggle in the map's own layer control, top right). The full analysis also modeled 20-min and 40-min bands.