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Topological and graph-theoretic tools to study urban infrastructure at global scale.


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prclz (pronounced "parcelize") is a library for the analysis of the topology and form of urban infrastructure. this library was used to analyze data for the Million Neighborhoods Map project.


  • generating vectors for street blocks in a neighborhood using street network information from OpenStreetMap
  • creating parcels/cadastral maps for building footprints and other land use features within each block
  • calculating structural and areal features (k-complexity of access graph, percentage of land used by buildings, etc) at the block and neighborhood level
  • determining optimal-cost, universal-access incremental road networks for a given locale

for how to use the package, please see the documentation