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TheMapSmith/chicago-race-plans.md

Last active February 18, 2016 08:55
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Chicago Race Plans
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chicago-race-plans.md

Plan for replicating the Chicago race map

  • Download 2014 ACS 5y ancestry estimates (census tracts)✔
  • Knock out all non-livable areas out of the census tracts
    • Roadedge (Cook Co Open Data) <-- Stuck trying to simplify this file to be manageable
    • Parks (Cook) ✔
    • Non-residential land use (OSM) ✔
    • Non-residental OSM buildings (OSM) ✔
  • Massively simplify the resulting tracts

Option 1:

  • Create one random dot per each race in the tract
  • Create hulls around each race polygon
  • Try to extract some patterns from that

Option 2:

  • Identify the most common ancestry in the tract
  • Dissolve any adjacent tracts
  • Drop any tiny sliver tract fragments
  • Simplify some more
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