openstreetmap.org, Amy Lee Walton (Mapbox Gallery), Stamen Designs

monochome.com, MapOnShirt, MaptimeSLC

OpenStreetMap is everywhere

..all of these companies

(Mapbox Clients)

Craigslist

National Geographic

"Improve this Map"

If not this, then typically OSM

Haiti Earthquake 2010

2013 Typhoon Yolanda (Philippines)

Nepal Earthquake 2015

OSM Data Model

Semi-Structured GeoSpatial Data

Points? Lines? Polygons?

Points, Lines, Polygons

Nodes, Ways, Relations (sort of)

OpenStreetMap Data: Node

OpenStreetMap Data: Way

  
  
  
  
  
  
  
  
  
  
  
  
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OpenStreetMap Data: Way

  
  
  
  
  
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OpenStreetMap Data: Tags

• Descriptive, non-spatial characteristic of a map object
• Unrestricted key-value pairs added to any map object.

Example tags for OSM objects in New York City

Obtaining OSM Data

Overpass API

Optimized for read-only DB access.

Custom query language

The Overpass Turbo project is very helpful

Full history file is also available:

- Every version of an object

- Timestamp, user, version #

Tools for Handling OSM Data

Benefits of an active dev community:
There are a lot of them, depending on your needs

osmium library

The primary library for working with full OSM data formats.

Written in C++, ported to Python, Node

Standalone utility as well

osm2pgsql

Command-Line utility to populate PostGIS database with OSM data

Tile-Reduce

Tile Reduce 3 OSM Coverage from Mapbox on Vimeo.

Tile Reduce Example

OSM Lint (Bridge On Node)

use 'strict';
var turf = require('turf');

// Identify Point geometries with a bridge tag.
module.exports = function(tileLayers, tile, writeData, done) {
  var layer = tileLayers.osm.osm;
  var result = layer.features.filter(function(val) {
    if (val.properties.bridge && (val.geometry.type === 'Point')) {
      val.properties._osmlint = 'bridgeonnode';
      return true;
    }
  });

  if (result.length > 0) {
    var fc = turf.featureCollection(result);
    writeData(JSON.stringify(fc) + '\n');
  }

  done(null, null);
};

Tile-Reduce Examples

Discussion

Examples?

Epic-OSM

Thanks!

Questions?