Uploads from Eric Fischer, tagged visualization, with geodata

San Francisco from the perspective of runners

nobody@flickr.com (Eric Fischer) — Wed, 10 Aug 2011 09:08:12 -0700

After seeing Cooper Smith's visualizations of data from runners in New York City, I wanted to see what similar data sets would look like for other cities. Nike+ doesn't have public GPS logs, but MapMyRun does, if you are willing to spend several hours clicking through search results to hit the "Download" buttons, so that's what I did to get the tracks for these 771 runs (from June 13 through August 9) in San Francisco.

As Open Source Planning has pointed out, uploaded runs come from a fairly small, self-selected group of people, the most obvious result of which is the total absence of the southeastern corner of the city from this map. It is also a very self-conscious process, so it is biased toward intentional, and often intentionally difficult, trips made for their own sake, and away from the repetitive patterns of everyday life.

Unfortunately the MapMyRun tracklogs do not have date and time stamps, so it is not possible to do the time of day, pace, and interruption analyses that Cooper Smith did. I should have done direction of travel, though.

Corrected diagram of traffic signal timings on 6th and Taylor Streets

nobody@flickr.com (Eric Fischer) — Fri, 05 Aug 2011 22:27:10 -0700

Eric Fischer posted a photo:

That last one was kind of interesting to look at but a lot of the samples were not actually from the right street. It was a plot of the sample prior to each one that should actually have been included. Oops! This time for sure.

My own experience in black lines; Cabspotting in red and blue dots.

The vertical axis is time (15 minutes from top to bottom) and the horizontal axis is distance (1.3 miles from right to left, with street names labeled at the top). The red and blue dots are bands of presence of vehicles at a particular place and time (red southbound, blue northbound). Shallow slopes of the bands are relatively fast speeds; vertical slope is where they are stopped for a red light. North of Market Street is one-way, so it has only blue dots.

See something or say something: San Francisco

nobody@flickr.com (Eric Fischer) — Fri, 10 Jun 2011 13:43:46 -0700

Eric Fischer posted a photo:

Red points are locations of Flickr photos. Blue points are locations of Twitter tweets.

Twitter dots are larger to reflect that I have more data from Flickr. Twitter should catch up in a few months.

People are more likely to photograph scenic views and more likely to tweet from commercial districts. But there is plenty of crossover too.

Locals and Tourists #243 (GTWA #763): Albuquerque

nobody@flickr.com (Eric Fischer) — Thu, 09 Jun 2011 23:14:19 -0700

Eric Fischer posted a photo: