Posts Tagged ‘geo restful’

Open Source GIS Stack (Mikel Maron)

Sunday, November 16th, 2008

[Editor's note: If you want to stay away from Google, Microsoft, and ESRI to get your interactive, online map on, here's how. Also check out this interesting PDF article on GeoDjango.]

Republished from Brainoff.com on Oct. 31st, 2008.

There’s a need for a good, high level description of the alternatives within in the “gently settling” stack of open source geoweb application development.

The OpenGeo Stack is the epitome of clarity, breaking down their tool set in a nice executive summary. But the OpenGeo stack only covers their tools, not all the available options. So I’m going to make a quick first pass of a high level overview. It’s useful for me, maybe for others. If you think I’ve done a poor job, help improve it in the comments, or on some wiki somewhere.

OpenGeo breaks things down into FrontEnd, Tiling, ApplicationFramework, Database. I’ll add Rendering, since in other tool sets this is split into different packages.

FrontEnd
the slippy map

* OpenLayers the Ajax gold standard
* ModestMaps for mind blowing Flash, ala Stamen
* Mapstraction don’t want to tax your mind? it looks just like the Google/Yahoo/Microsoft API

Tiling
be nice to your database or WMS and cache map images into tiles, just like Google and friends

* TileCache simple bit of python
* GeoWebCache same thing in Java
* mod_tile it’s kinda OpenStreetMap specific, but an apache module is a good idea too

Rendering
make pretty maps

* Mapnik looks beautiful. getting somewhat less painful to install.
* Mapserver does it all. also a pain to configure. looking better.
* GeoServer

ApplicationFramework
where the the main logic of the app goes. MVC. CRUD. etc.

* GeoDjango making great progress on a complete package.
* GeoRails more a bunch of plugins than a package, but definitely useable
* GeoServer the standard for open geo standards. Java.

Database

* Postgres + PostGIS
* MySQL sure, it has spatial extensions too. just not as fast or fully implemented as PostGIS

Random notes, other good sources

Architect your interfaces on Geo RESTful services. Andrew breaks down the formats and approaches for Neogeography and the GeoWeb in this presentation and book. For Ajax smooveness, use jQuery or prototype. Paul Ramsey has a good deep overview of open source GIS. Mecklenburg County GIS is a nice example of an instance of the stack.

There really is a need for a new book on this stuff, the O’Reilly trio of paper geo titles are great but out of date, and the landscape of osgeowebappdev is stabilising. Of course, no one wants to write it.