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GeoDjango: Putting Django on the Map
This document discusses GeoDjango, which allows spatial relationships to be modeled in Django applications. It introduces Tobler's First Law of Geography and explains how to install and configure GeoDjango by adding PostGIS and required libraries. It demonstrates defining geographic models and creating geographically related instances. It also covers using spatial relationships for queries, outputting maps to the web, and working with geographic admin interfaces and APIs.
GeoDjango: Putting Django on the Map
- 1. GeoDjango: Putting Django onthe Map Sunday, 9 February 2014
- 2. Tobler’s First Lawof Geography: "Everything is related to everything else, but near things are more related than distant things." Tobler, W. (1970) "A computer movie simulating urban growth in the Detroit region". Economic Geography, 46(2): 234-240. Sunday, 9 February 2014
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- 4. Here be dragons Sunday,9 February 2014
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- 7. • Install PostGIS (postgis.net/install/) • • • Youcan use other dbs, but... Install libraries (docs.djangoproject.com/...) Add django.contrib.gis to INSTALLED_APPS and you’re hot to trot Sunday, 9 February 2014
- 8. Defining GeoDjango Models Sunday,9 February 2014
- 9. Creating Geographically RelatedInstances Sunday, 9 February 2014
- 10. One advantage ofmodelling geographic relationships this way: Sunday, 9 February 2014
- 11. What’s in thedatabase? Sunday, 9 February 2014
- 12. GEOS Instances Sunday, 9February 2014
- 13. Using Spatial Relationships Possibleplaces to check in Nearest restaurant Within user-defined area Sunday, 9 February 2014
- 14. The closest barI’ve been to before The most popular bar in London Sunday, 9 February 2014
- 15. Lookup Type bbcontains bboverlaps contained contains contains_properly coveredby covers crosses disjoint distance_gt distance_gte distance_lt distance_lte dwithin equals exact intersects overlaps relate same_as touches within left right overlaps_left overlaps_right overlaps_above overlaps_below strictly_above strictly_below Sunday, 9February 2014 PostGIS X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X Oracle X SpatiaLite MySQL X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X
- 16. Time to outputfor the web Sunday, 9 February 2014
- 17. The Admin Interface Sunday,9 February 2014
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- 22. Thank you! London DjangoCoding Session - Biweekly Hosted by: Conversocial - always hiring Django people @godawful glloyd@gmail.com Sunday, 9 February 2014