geolocation for web - geohash, geoip & html5 geolocation

Geolocation for WebManuel Berger - Dez 2013, Technologieplauscherl

48.32926, 14.32076

48.32926, 14.32076

u2d4vyh43gh

u2d4vyh43ghCompuware

u2d4vyhDornach

u2d4vyUrfahr

u2d4vLinz

u2d4OÖ

Geohash

! www.bigdatamodeling.org/2013/01/intuitive-geohash.html

Single Simple String Representation

http://short.er/12C5kv

Database• Query on Single Index

• Grouping Of Points

• Zooming And Aggregation

• Caching At Scale

• Finding Nearest Points

! http://www.bigfastblog.com/geohash-intro

Quick ’n Dirty Proximity Search

22rt841 <-- Far way party

u2d4vyh <-- Somebody else's party nearby

u2d4vyh <-- Our party

u2d4vyh <-- Another nearby party

ub84ew3 <-- Not so close party

Problem!?

Problem!?

0 1

Problem!?

0 1

Solution!

8 surrounding geohashes

Used in MongoDB and HBase to implement proximity searches

Getting Dirty

Multiple Implementations --> See Wikipedia

Java: github.com/davidmoten/geo !

geohash.org

GeoIP 127.0.0.1 = @Home

Getting Dirty

Multiple GeoIP-DB providers

Free: Maxmind (bit.ly/1kf6fdv)

Yep, there is a Grails Plugin ;) (grails.org/plugin/geoip)

HTML5 Geolocation JS-Part

Formerly: W3C Geolocation

if (navigator.geolocation) { navigator.geolocation.getCurrentPosition( successHandler, [errorHandler]); }

if (navigator.geolocation) { navigator.geolocation.getCurrentPosition( successHandler, [errorHandler]); }

Geolocation API Support

IE   Firefox  Safari Chrome Opera  iPhone Android

9.0+ 3.5+ 5.0+ 5.0+ 10.6+ 3.0+ 2.0+

GeoIP

Geohash

Geolocation

Distance sort

Geocoding