Sql for Everything: GIS on the Web

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Bill Morris

An overview of geoprocessing in its best web incarnation: PostGIS

Tecnología

SQL For Everything
Geoprocessing and Cartography With
PostGIS

Bill Morris – Geosprocket LLC

Speedy Background
• SQL = Structured Query Language
• Beloved/BeHated by Database Admins
• Runs Behind Nearly Everything

SQL For Everything - Bill Morris - Geosprocket LLC

Ever Fired Up a Computer?
You’ve Used SQL.

SQL For Everything - Bill Morris - Geosprocket LLC

So What’s PostGIS?
• A spatial extender for the PostgreSQL
database system
• Free as in Speech, Free as in Beer

SQL For Everything - Bill Morris - Geosprocket LLC

What’s Post-PostGIS?
• A parody on Twitter. Pay no mind.

SQL For Everything - Bill Morris - Geosprocket LLC

What’s CartoDB?
• A PostGIS environment built for the web
• “Open-Source Fusion Tables”
• Build your own server:
https://github.com/CartoDB/cartodb20
• Or get a hosted account:
http://cartodb.com/

SQL For Everything - Bill Morris - Geosprocket LLC

SQL For Everything - Bill Morris - Geosprocket LLC

Back to SQL.

SQL For Everything - Bill Morris - Geosprocket LLC

SQL as we know it

Source: Chicago Crime Commission & Openstreetmap Contributors
SQL For Everything - Bill Morris - Geosprocket LLC

SELECT * FROM territory_all WHERE
“NAME” LIKE ‘Latin%’

Source: Chicago Crime Commission & Openstreetmap Contributors
SQL For Everything - Bill Morris - Geosprocket LLC

SELECT * FROM territory_all WHERE
name LIKE ‘Latin%’

SQL For Everything - Bill Morris - Geosprocket LLC

Geoprocessing as we know it

SQL For Everything - Bill Morris - Geosprocket LLC

Geoprocessing in PostGIS

SELECT ST_Whatever( geoprocess! )

SQL For Everything - Bill Morris - Geosprocket LLC

Geoprocessing in PostGIS

SQL For Everything - Bill Morris - Geosprocket LLC

Buffer 500m

SQL For Everything - Bill Morris - Geosprocket LLC

Buffer 500m from the points that
fall on Ashland Ave

SQL For Everything - Bill Morris - Geosprocket LLC

Append two layers of different
geometry types

SQL For Everything - Bill Morris - Geosprocket LLC

Geoprocessing Optimized

…png?sql=…

SQL For Everything - Bill Morris - Geosprocket LLC

This is Familiar

google.com?q=GIS

SQL For Everything - Bill Morris - Geosprocket LLC

…png?sql=…

SQL For Everything - Bill Morris - Geosprocket LLC

http://2.tiles.cartocdn.com/geosprocket/tiles/vtparcels_burlington2002b/15/9714/11850.png

SQL For Everything - Bill Morris - Geosprocket LLC

http://2.tiles.cartocdn.com/geosprocket/tiles/vtparcels_burlington2002b/15/9714/11850.png?sql
=SELECT * FROM vtparcels_burlington2002b WHERE area>8000

SQL For Everything - Bill Morris - Geosprocket LLC

http://2.tiles.cartocdn.com/geosprocket/tiles/vtparcels_burlington2002b/15/9714/11850.png?sql
=SELECT 20 as distance, st_buffer(the_geom_webmercator,50) as the_geom_webmercator FROM
vtparcels_burlington2002b WHERE area>80000

SQL For Everything - Bill Morris - Geosprocket LLC

Going off the Rails a Bit . . .

https://gist.github.com/wboykinm/5533575
SQL For Everything - Bill Morris - Geosprocket LLC

A Query Turns This . . .

SQL For Everything - Bill Morris - Geosprocket LLC

Into This.

SQL For Everything - Bill Morris - Geosprocket LLC

I’m barely scratching the surface of SQL here.

https://gist.github.com/wboykinm/5533575
SQL For Everything - Bill Morris - Geosprocket LLC

Why Care?
Because the web wants to see
your data

SQL For Everything - Bill Morris - Geosprocket LLC

PostGIS

SQL For Everything - Bill Morris - Geosprocket LLC

Thanks! Accepting all questions:

wboykinm@geosprocket.com

@vtcraghead

SQL For Everything - Bill Morris - Geosprocket LLC

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Sql for Everything: GIS on the Web

1. SQL For Everything Geoprocessing and Cartography With PostGIS Bill Morris – Geosprocket LLC

2. Speedy Background • SQL = Structured Query Language • Beloved/BeHated by Database Admins • Runs Behind Nearly Everything SQL For Everything - Bill Morris - Geosprocket LLC

3. Ever Fired Up a Computer? You’ve Used SQL. SQL For Everything - Bill Morris - Geosprocket LLC

4. So What’s PostGIS? • A spatial extender for the PostgreSQL database system • Free as in Speech, Free as in Beer SQL For Everything - Bill Morris - Geosprocket LLC

5. What’s Post-PostGIS? • A parody on Twitter. Pay no mind. SQL For Everything - Bill Morris - Geosprocket LLC

6. What’s CartoDB? • A PostGIS environment built for the web • “Open-Source Fusion Tables” • Build your own server: https://github.com/CartoDB/cartodb20 • Or get a hosted account: http://cartodb.com/ SQL For Everything - Bill Morris - Geosprocket LLC

7. SQL For Everything - Bill Morris - Geosprocket LLC

8. SQL For Everything - Bill Morris - Geosprocket LLC

9. Back to SQL. SQL For Everything - Bill Morris - Geosprocket LLC

10. SQL as we know it Source: Chicago Crime Commission & Openstreetmap Contributors SQL For Everything - Bill Morris - Geosprocket LLC

11. SELECT * FROM territory_all WHERE “NAME” LIKE ‘Latin%’ Source: Chicago Crime Commission & Openstreetmap Contributors SQL For Everything - Bill Morris - Geosprocket LLC

12. SELECT * FROM territory_all WHERE name LIKE ‘Latin%’ SQL For Everything - Bill Morris - Geosprocket LLC

13. Geoprocessing as we know it SQL For Everything - Bill Morris - Geosprocket LLC

14. Geoprocessing in PostGIS SELECT ST_Whatever( geoprocess! ) SQL For Everything - Bill Morris - Geosprocket LLC

15. Geoprocessing in PostGIS SQL For Everything - Bill Morris - Geosprocket LLC

16. Buffer 500m SQL For Everything - Bill Morris - Geosprocket LLC

17. Buffer 500m from the points that fall on Ashland Ave SQL For Everything - Bill Morris - Geosprocket LLC

18. Append two layers of different geometry types SQL For Everything - Bill Morris - Geosprocket LLC

19. Geoprocessing Optimized …png?sql=… SQL For Everything - Bill Morris - Geosprocket LLC

20. ? SQL For Everything - Bill Morris - Geosprocket LLC

21. This is Familiar google.com?q=GIS SQL For Everything - Bill Morris - Geosprocket LLC

22. …png?sql=… SQL For Everything - Bill Morris - Geosprocket LLC

23. http://2.tiles.cartocdn.com/geosprocket/tiles/vtparcels_burlington2002b/15/9714/11850.png SQL For Everything - Bill Morris - Geosprocket LLC

24. http://2.tiles.cartocdn.com/geosprocket/tiles/vtparcels_burlington2002b/15/9714/11850.png?sql =SELECT * FROM vtparcels_burlington2002b WHERE area>8000 SQL For Everything - Bill Morris - Geosprocket LLC

25. http://2.tiles.cartocdn.com/geosprocket/tiles/vtparcels_burlington2002b/15/9714/11850.png?sql =SELECT 20 as distance, st_buffer(the_geom_webmercator,50) as the_geom_webmercator FROM vtparcels_burlington2002b WHERE area>80000 SQL For Everything - Bill Morris - Geosprocket LLC

26. Going off the Rails a Bit . . . https://gist.github.com/wboykinm/5533575 SQL For Everything - Bill Morris - Geosprocket LLC

27. SQL For Everything - Bill Morris - Geosprocket LLC

28. A Query Turns This . . . SQL For Everything - Bill Morris - Geosprocket LLC

29. Into This. SQL For Everything - Bill Morris - Geosprocket LLC

30. I’m barely scratching the surface of SQL here. https://gist.github.com/wboykinm/5533575 SQL For Everything - Bill Morris - Geosprocket LLC

31. Why Care? Because the web wants to see your data SQL For Everything - Bill Morris - Geosprocket LLC

32. SQL For Everything - Bill Morris - Geosprocket LLC

33. SQL For Everything - Bill Morris - Geosprocket LLC

34. SQL For Everything - Bill Morris - Geosprocket LLC

35. SQL For Everything - Bill Morris - Geosprocket LLC

36. PostGIS SQL For Everything - Bill Morris - Geosprocket LLC

37. Thanks! Accepting all questions: wboykinm@geosprocket.com @vtcraghead SQL For Everything - Bill Morris - Geosprocket LLC

Sql for Everything: GIS on the Web

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