Latest Entries

Tableau & Quantified Self

May 24th, 2014

Tableau has a contest going on for visualizing Quantified Self data. I happen to have a fair amount of such of data from all kinds of sources on, so I decided to give it a shot.

EuroSeattle Startup Weekend

January 29th, 2014

Last weekend I attended my first Startup Weekend. The event was very well organized; I had a great time and got to know a lot of good people.

API Prayer

October 11th, 2013

Our Father in heaven,
hallowed be your OAuth tokens.
Your data come,
your quota will be increased,
in the sandbox, as well as in production.
Give us this day out daily stats,
and forgive us our outdated docs,
as we have also forgiven those whose timestamps lack time zone offsets.
And lead us not into premature standardization,
but deliver us from expired SSL certificates.

Lenovo Thinkpad T431s

July 5th, 2013

Got a Thinkpad T431s to replace my 3-year old T410s. Here are some random observations, after using the new laptop for a few weeks.

California Roadtrip

March 24th, 2012

One-week trip from Los Angeles to San Francisco and back (March 15–22). Map with tracks, waypoints and links to photo albums.

OSGi and Eclipse RCP Talk

November 17th, 2011

I gave a talk at the Seattle Java User Group this week, where I talk about two technologies I use at work: The OSGi module system, and the Eclipse Rich Client Platform. Giving this talk was a good experience, and the audience was great. You can watch the talk below.

One Year’s Tracklogs

December 12th, 2010

Here’s a map that shows every tracklog I recorded this year, driving and hiking around Washington State (mostly).


April 16th, 2010

Trip report for a one-week vacation on Kauai (Hawaii), April 8th — 15th.

Hosting Applets in Google Docs

January 22nd, 2010

Google Docs recently added support for uploading arbitrary files (up to 250MB large). Can this be used to host Java applets?

Sharing Tracklogs

November 12th, 2009

While hiking, I often carry along a small GPS device to record my tracks. This is not just useful in case I get lost and need to backtrack, but also allows me to geotag my pictures before uploading them. Plus it can be fun to review a hike in Google Earth. What about sharing tracklogs? This can be valuable when hiking in areas with outdated maps or maps hat don’t have all trails. So I had a look at some of the existing websites for sharing GPS tracklogs — here’s what I found.