Transcript
![Page 1: NHGIS National Historical Geographic Information System](https://reader030.vdocuments.net/reader030/viewer/2022032704/56649d415503460f94a1c9d4/html5/thumbnails/1.jpg)
NHGIS
National Historical Geographic Information System
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Illustration of our Editing Process
1. Scan Paper Maps
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Editing Process2. Heads up editing
![Page 4: NHGIS National Historical Geographic Information System](https://reader030.vdocuments.net/reader030/viewer/2022032704/56649d415503460f94a1c9d4/html5/thumbnails/4.jpg)
Editing Process3. Overlay
![Page 5: NHGIS National Historical Geographic Information System](https://reader030.vdocuments.net/reader030/viewer/2022032704/56649d415503460f94a1c9d4/html5/thumbnails/5.jpg)
Editing Process4. Using TIGER lines to make changes
![Page 6: NHGIS National Historical Geographic Information System](https://reader030.vdocuments.net/reader030/viewer/2022032704/56649d415503460f94a1c9d4/html5/thumbnails/6.jpg)
Editing Process5. Completed edits
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Data Comparison
• Minneapolis, MN vs. New Orleans, LA
• Legend standardized between cities
• Percent of total population that considers themselves ‘Black’
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Percentage Black, 1940
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Percentage Black, 1960
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Percentage Black, 1980
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Percentage Black, 1990
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Percentage Black, 2000