James E. Marca
Founding Member at Activimetrics LLC
Dr. James E. Marca earned his PhD in transportation engineering from the University of California, Irvine in 2002. He started working with PostgreSQL and PostGIS at that time to stash and process GPS data collected from in-vehicle data collection units streaming data over CDPD wireless modems. He continues to use PostgreSQL as a data store for research projects and websites, and has connected to PostgreSQL from Perl, Java, JavaScript, Python, Elixir, and R. Some of that code is available on github (https://github.com/jmarca)
Upcoming presentations
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Past presentations
In responding to an RFP to optimize and improve street sweeping routes for a small city in California, we developed a solver based on Google's Operations Research Tools. While the guts of the solver uses OR-Tools, virtually everything else about the project is made possible by PostgreSQL, PostGIS, and pgRouting.
In this presentation, I talk about the various ways PostgreSQL and friends made ...
Using PostgreSQL, PostGIS, and pgRouting for street sweeping
Load, clean, store, and animate OpenStreetMap data for a street sweeping route-optimizer project
In responding to an RFP to optimize and improve street sweeping routes for a small city in California, we developed a solver based on Google's Operations Research Tools. While the guts of the solver uses OR-Tools, virtually everything else about the project is made possible by PostgreSQL, PostGIS, and pgRouting.
In this presentation, I talk about the various ways PostgreSQL and friends ...
My standard development technique with PostgreSQL is to hack away in Emacs, try things out on live data, and eventually build up working queries and functions. This "test as you go" approach works well for small projects, but for really hard problems the result is usually hundreds of lines of SQL that looks a lot like an object lesson in unmaintainable code. Old hackers can learn new tricks, an...