NICAR25-InteractiveMaps

NICAR25: Unlocking Interactive Maps for Newsrooms

Link to this README: bit.ly/nicar25-protomaps
Opening the developer console on mac: Command + Option + i
SLIDES: r2-public.protomaps.com/NICAR25.pdf
Feedback form

Tools

Datasets

Open Data Minneapolis
- Motorized Foot Scooter and eBike Trips 2023
- “The Hennepin GIS Open Data site offers GIS data to the public free of charge and without need for a license. This site provides the ability to explore, view, share, consume, or download data.”
TheUpshot/presidential-precinct-map-2020
Protomaps Basemaps

Starting a static file server

python3 -m RangeHTTPServer

Tasks

Commands

python create_geojson.py

pmtiles show tiles/basemap_minneapolis.pmtiles

# detroit extract
pmtiles extract https://build.protomaps.com/20250306.pmtiles —-bbox=-83.1379,42.2801,-82.9600,42.3751

tippecanoe points.geojson -o points.pmtiles --force --drop-fraction-as-needed
tippecanoe lines.geojson -o lines.pmtiles --force --drop-fraction-as-needed

# more options:
# --maximum-tile-bytes=50000
# --maximum-drop-fraction-as-needed
# --maximum-zoom=7

tippecanoe precincts-with-results.geojson -o precincts.pmtiles

More Info

License

Workshop materials: Creative Commons CC-BY