Post on 16-Jul-2015
Building Location-Aware Appswith Open Source & Open Data
#openmaps
Matthew Smollinger@mattsmollinger
Chuck Greb@ecgreb
SXSW Interactive | 14 March 2015
Mapzen is an open source mapping lab building and supporting open data and software to promote a healthy mapping
ecosystem.
Skaffl is an EdTech company that specializes in mobile solutions for the K-12
market.
start where you are
Part 1: Overview
⇢ Location-aware apps
⇢ Open source and open data
Part 2: Maps
⇢ Raster tiles
⇢ Vector tiles
Part 3: Geolocation, Search & Routing
⇢ Location services
⇢ Geocoding
⇢ Navigation
Part 4: Beacons & BLE
⇢ Monitoring and ranging
⇢ Indoor positioning
Agenda
#openmaps
Part 1:Overview
Building Location-Aware Appswith Open Source & Open Data
#openmaps
3 kinds of location-aware apps
⇢ Mapping applications
⇢ Location-based apps
⇢ Apps with location-aware features
Location-Aware Apps
Mapping applications
Location-based apps
Wearable integration
Apps with location-aware features
Common features
⇢ Maps
⇢ Geolocation
⇢ Search
⇢ Navigation
Location-Aware Apps
Building Location-Aware Appswith Open Source & Open Data
Code
Open Source
Philosophy
Open Source
License
Open Source
Community
Open Source
Advantages
⇢ Transparency
⇢ Flexibility
⇢ Compatibility
⇢ Free!
Location-Aware Apps
Open source is not free like beer
Open Source
Open source is free like a puppy
Open Source
Building Location-Aware Appswith Open Source & Open Data
Availability & Access
Open Data
Reuse & Redistribution
Open Data
Universal Participation
Open Data
OpenStreetMap (OSM)
⇢ Crowdsourced & public data
⇢ Local knowledge
⇢ Attribution
⇢ Share-alike
Open Data
#openmaps
Part 2:Maps
Datasource
Maps
Tiles
Maps
Raster Vector
256 x 256 pixels
Maps
Zoom level 0:1 tile for the world
Maps
Zoom level 1:4 tiles for the world
Maps
Zoom level 2:16 tiles for the world
Maps
# of tiles = 2z x 2z
Maps
http://tile.openstreetmap.org/8/58/105.pnghttp://tile.openstreetmap.org/14/3743/6745.png
http://tile.openstreetmap.org/8/58/105.pnghttp://tile.openstreetmap.org/14/3743/6745.png
http://tile.openstreetmap.org/8/58/105.pnghttp://tile.openstreetmap.org/14/3743/6745.png
http://tile.openstreetmap.org/8/58/105.pnghttp://tile.openstreetmap.org/14/3743/6745.png
http://tile.openstreetmap.org/8/58/105.pnghttp://tile.openstreetmap.org/14/3743/6745.png
Layers & Overlay
Maps
http://wiki.gis.com/wiki/index.php/Overlay
Maps
Style
Why open source maps?
⇢ Cost
⇢ Customization
⇢ Privacy & security
Maps
osmdroid
#openmaps
osmdroid
⇢ Android only
⇢ Raster tiles
⇢ Started in 2008
⇢ Based on Google Maps API v1
⇢ Online and offline tile sources
⇢ Icons, tracking, and shapes
Maps
Mapbox
#openmaps
Mapbox
⇢ iOS & Android SDKs
⇢ Raster & vector tiles
⇢ Simple integration with Mapbox tile server
⇢ Alternate tile servers also supported
Maps
OpenScienceMap
#openmaps
OpenScienceMap
⇢ Universität Bremen
⇢ Pure vector maps
⇢ Native rendering engine
⇢ Java wrapper
⇢ Objective-C translation
Maps
Tangram ES
#openmaps
Tangram ES
⇢ Embedded systems version of Tangram for web
⇢ Native C++ rendering library
⇢ iOS, Android, and Raspberry Pi
⇢ EARLY work in progress!
Maps
#openmaps
Demo:Maps
#openmaps
Part 3:Geolocation, Search & Routing
Geolocation
#openmaps
Location Services
Geolocation, Search & Routing
Location Providers
⇢ GPS
⇢ Wi-Fi
⇢ Cell network
⇢ Passive
⇢ Sensors
⇢ BLE
Geolocation, Search & Routing
https://developers.google.com/events/io/sessions/325337477
Location Providers
⇢ GPS
⇢ Wi-Fi
⇢ Cell network
⇢ Passive
⇢ Sensors
Geolocation, Search & RoutingFused Location Provider (Android) &
CoreLocation (iOS)
One interface to rule them all.X
#openmaps
LOSTLocation Open Source TrackerLocation Open Source Tracker
Not all those who wander are lost.― J.R.R. Tolkien, The Fellowship of the Ring
LOST talks directly to the LocationManager
LOST
Optimizations
⇢ Frequency
⇢ Accuracy
⇢ Battery Life
LOST
Search
#openmaps
Geocoding:Real world address -> Lat/Lng
Geolocation, Search & Routing
Reverse Geocoding:Lat/Lng -> Real world address
Geolocation, Search & Routing
Geographic Search Engine
Pelias
Pelias
#openmaps
Pelias is a modular open-source geocoder built on top of ElasticSearch for fast geocoding.
Pelias
/suggest
The suggest endpoint provides a super-fast autocomplete. This API can be used to quickly find location names which BEGIN with the input text.
http://pelias.mapzen.com/suggest?input=big%20ben&lat=51.5&lon=-0.06
Pelias
/search
The search endpoint provides a full-text search. It will try to account for spelling mistakes and will search for your input at any position in the location name.
http://pelias.mapzen.com/search?input=shoreditch&lat=51.5&lon=-0.06
Pelias
/reverse
The reverse endpoint returns the nearest locations to your input lat/lon.
http://pelias.mapzen.com/reverse?lat=51.5&lon=-0.06
Pelias
Routing
#openmaps
Turn-By-Turn Navigation
Geolocation, Search & Routing
Public Transit
Geolocation, Search & Routing
Open Source Routing Machine (OSRM)
#openmaps
OSRM
#openmaps
Demo:Geolocation, Search & Routing
#openmaps
Part 4:Beacons & BLE
Beacons are awesome!
⇢ How they work
⇢ Cool stuff you can do
⇢ Products and frameworks
⇢ Examples
Beacons & BLE
A (quick) Guide to BT4
⇢ Basically three protocols in one
⇢ Bluetooth Low Energy
⇢ Operates in Two modes - Advertise and Connect
⇢ Only advertise is required - connect support is
optional
Beacons
⇢ Beacons implement advertise only
⇢ Transmit at regular intervals
⇢ Simplification of the BLE implementation
⇢ Replaces MAC address with UUID
⇢ Major number is for grouping
⇢ Minor number is for individualization
Indoor Location
⇢ Several different ways to accomplish
⇢ Wifi Triangulation
⇢ Ultrasonic Location
⇢ BLE Triangulation
⇢ Wifi is lackluster for triangulation
⇢ Ultrasonic need custom hardware
⇢ BLE range is poor compared to wifi or ultrasound
Open Source Indoor Location
⇢ Currently in very early discussions in OSM
⇢ A few frameworks / attempts are being made:
⬝ Redpin
⬝ Cricket from MIT
⬝ iLocate
⬝ indoor.io
⇢ Needs more time to bake
⇢ In the mean time...
#openmaps
Demo:Beacons & BLE
Thanks!
#openmaps
Matthew Smollinger@mattsmollinger
Chuck Greb@ecgreb
http://sxsw.feedogo.com/fdbk.do?sid=IAP31861