Monday Morning Session 2: Geospatial Anlysis in Rails

Presenter: Daniel Azuma

Slides at http://daniel-azuma.com/railsconf2012

Setting a Rails app with Geospatial

Libraries needed

libgoes - goemetric algorithms
libproj - coordinate projections
PostGIS - spatial plugin for Progres
RGeo - Ruby libraries

Gems needed

activerecord-postgis-adapter
rgeo-shapefil
sequeel https://github.com/ernie/squeel

Project 1 Visiulizing location activity

Using Mercator projection instead of lat/lon, easier to query
Visualation using heat maps rather pushpins, heatmap.js thermo.js

Project 2 Timezones based on location

May need to 4 to 1 subdivision to divide polygons for query perform

Ideas for projects

Heatmap to see where student/leads are located and rendered and filtered with JS
Heetmap with website traffic from Google Anaytics using IPs