Align Historical Chicago Census Tracts
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cook_county_extracts
nhgis0001_csv
.gitignore
README.md
commonTract.R
nhgis0002_csv.zip

README.md

constant-tracts

Align Historical Chicago Census Tracts

Extract Cook County, IL Tracts

> ogr2ogr -where 'NHGISST="170" and NHGISCTY="0310"' cook_county_tract_2000.shp US_tract_2000.shp