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A blog about developing software by trial and error by Doug Letterman

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Author: Doug

Alameda Measure Z

About a year ago I moved to Alameda, California. I was surprised to learn that Alameda is the only city in California that actually bans the construction of new apartments in its charter (which is like a city’s constitution) thanks

Doug September 14, 2020September 14, 2020 Uncategorized Read more

Mapping Oakland’s license plate reader data

For the past few years the Oakland police department has been using license plate reader (LPR) technology to record the license plates of cars. In response to a public records requests the city released the entire data set to Ars

Doug October 15, 2015September 14, 2020 maps Read more

RunParticles ported to Windows

I’ve ported RunParticles, my app for animating GPS track logs, to Windows. The installer is available here. It has been tested on Windows 8.1.

Doug February 26, 2015September 14, 2020 Uncategorized Read more

Introducing RunParticles

RunParticles is a free, open source Mac application that animates many GPS track logs on a scrollable map. More information and download here.

Doug December 22, 2014February 26, 2015 Uncategorized Read more

Getting tracklogs into Mapnik

The following describes my experience generating an OpenLayers slippy map from GPS tracklogs using TileMill, TileCache, and Mapnik. I started by exporting my run data from Garmin Training Center and converting it from Garmin Training Center format (.tcx) to GPS

Doug December 29, 2012December 31, 2012 maps No Comments Read more

Run map + OpenStreetMap

I followed the instructions to add OpenStreetMap to my run map. Larger version.

Doug December 18, 2012December 29, 2012 maps Read more

Running map

Three years of GPS track logs made into a slippy map. This little project was a lot more difficult than I thought it would be. It took a great deal of trial and error. I’ll follow up with a post

Doug December 12, 2012December 29, 2012 maps Read more

Garmin Connect Google Maps Greasemonkey script updated

I updated my Greasemonkey script that replaces the Bing Map with a Google Map in Garmin Connect. This version is made faster by completely disabling the Bing Map and it no longer fetches the map information twice. Additionally, I’ve fixed

Doug January 23, 2011January 24, 2011 Uncategorized Read more

Missing Google Maps on Garmin Connect

Garmin Connect, a site I use to log my runs and bike rides, switched from Google Maps to Bing Maps back in November. Bing Maps’ coverage seems generally inferior to Google Maps and I think the maps just look better

Doug January 15, 2011September 14, 2020 Uncategorized Read more

NWSClient 1.2 Released

NWSClient version 1.2 is now available for download. This version fixes a number of bugs, adds detailed hourly forecast data, and increases the size of the text in the app icon so that the temperature is more readable. Download version

Doug March 30, 2010September 14, 2020 Blackberry, Downloads, Java Read more
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