Not heard of OpenStreetMap before?

Not familiar with what OpenStreetMap is about?

Not used OpenStreetMap before?

Not edited OpenStreetMap before?

Not made maps with OpenStreetMap before?

Goal: In the next 2 hours, you will have done all this

Have experience with GIS tools or a GIS background?

OpenStreetMap: https://openstreetmap.org

OpenStreetMap: https://openstreetmap.org

• OpenStreetMap Data
• OpenStreetMap Software (Geocoding, Routing, Rendering)
• OpenStreetMap Website (Ruby on Rails)
• OpenStreetMap "Map" (Carto Stylesheet)

OpenStreetMap: https://openstreetmap.org

• OpenStreetMap Data (Almost always referring to this)
• OpenStreetMap Software (Geocoding, Routing, Rendering)
• OpenStreetMap Website (Ruby on Rails)
• OpenStreetMap "Map" (Carto Stylesheet)

OpenStreetMap - Free, open, geographic database

OpenStreetMap - Free, open, geographic database

Free

• Use data however you want
• Add data based on your need
• Zero cost

OpenStreetMap - Free, open, geographic database

Open

• No technical restriction
• No license
• Accessible to everyone

OpenStreetMap - Free, open, geographic database

Geographic database

• Points (1 dimension)
• Lines/Polygons (2 dimension)
• Multi-Polygons (higher dimension)

OpenStreetMap - Free, open, geographic database

Geographic database

• Points (1 dimension)
• Lines/Polygons (2 dimension)
• Multi-Polygons (higher dimension) (Not relevant in most cases)

OpenStreetMap - Free, open, geographic database

Geographic database

• Points (1 dimension)
• Lines/Polygons (2 dimension)

• Every element in the database has
  • Latitude/Longitude
  • Information associated with it - "tags"

OpenStreetMap - Free, open, geographic database

• Point: Tree
• Point: Kempegowda Tower
• Line: Sankey Tank Flyover (proposed)
• Polygon: IIHS, Bengaluru City Campus

OpenStreetMap - Free, open, geographic database

• With historical data: Benniganahalli Metro Station

Free, open, geographic database

• 18 lakh contributors

• 40 lakh changes/day

• 700 crore nodes

• And growing

Why not Google Maps?

• Expensive: Farewell, Google Maps
• Data is not open: Making a Road Quality map
• Google decides what is relevant: Pedestrian routing experience

Who uses OpenStreetMap?

Data Producers (Create data)

Data Consumers (Use data)

Data Producers

• OpenStreetMap Community
  • Individual contributors (Crowdsourced)
  • Local OpenStreetMap groups (OSM Bengaluru, OSM India)
• Organizations
  • Mega Corporations (Apple, Amazon, Meta, Microsoft)
  • Companies (Ola, Swiggy)

Data Consumers

• All the Data Producers

• Non-profit organizations (Médecins Sans Frontières, Red Cross)

• Geodata services (ESRI, DigitalGlobe, Mapbox, Garmin)

• Governments, News Organizations, Educational Institutions

• Who uses OpenStreetMap? - Consumers

How do people use it?

Personal

• BLR Road Quality
• India Transit

Applications

• Organic Maps
  • Fully offline
  • No ads
  • Open-source
• OsmAnd
  • Contour Lines
  • Terrain
  • Hillshades

Tools

• 3D Buildings
• Underground Station
• Indoor Building
• Landuse
• Electrical Infrastructure
• Water Infrastructure
• Etymology
• OpenRailwayMap
• CyclOSM
• Watercolor Style
• CityAccessMap
• osm-gpt

Organizations

• Trufi
• HOTOSM

Companies

• Swiggy
• Ola
• Apple
• Microsoft
• Meta

Edit OpenStreetMap using iD (Hands-on)

• Open https://osm.org and find an area you want to edit
• Can't choose where to edit? Select a random location

Export and use OpenStreetMap data (Hands-on)

Overpass Turbo

• Extract a GeoJSON from OpenStreetMap data
• Link https://overpass-turbo.eu
• Alternate Links (if above doesn't work):
  • https://tyrasd.github.io/overpass-turbo
  • https://overpass-turbo.osm.ch/
  • https://maps.mail.ru/osm/tools/overpass/

Export and use OpenStreetMap data (Hands-on)

• Use the GeoJSON to make a map
  • Felt: https://felt.com/
  • QGIS: https://qgis.org/en/site/