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Gregory Arenius

Mapper since:
April 11, 2009
Last map edit:
June 04, 2019

I'm interested in urban planning and mass transit. As OSM matures further I'm hoping it will be a useful source of data for research. There aren't enough open data sets out there that people who aren't professionals have access to, especially in useful formats. I think OSM has the potential to change that.

One particular thing I would like to do is make maps of the San Francisco transit system. I think better ones could be made but at the moment all the data is locked up. To that end I've been concentrating a lot of my mapping activities on bus stops and bus routes.

My mapping technique of choice is hand drawn maps. I walk down a street and mark all points of interest and their relation to the nearest cross streets and any other information. I then use potlatch to mark and tag all the points I've written down. I've used a GPS in the past and for this type of mapping it doesn't actually make things any easier because I still have to write down so much information. In addition to that in parts of the city with lots of tall buildings the GPS is less accurate.

So thats me with respect to OSM. If you're in the San Francisco area and want to get together to map or grab a beer and talk mapping drop me a line.

Cheers, Greg

Latest Diaries

Diary Entry SOTM-US Synopsis

Since I would like to hear more about what goes on at some of the conferences I can't make I thought I would post some of what stuck out the most f...

Comments 1 comment Date August 19, 2010

Diary Entry Draft Shoe Repair Feature Proposal

I put together a feature proposal for shoe repair shops today. There are a bunch of them around San Francisco and I've been tagging them as shop...

Comments 0 comments Date May 14, 2009

Diary Entry Most out of date data in OSM?

I just deleted what I think could be one of the most out of date nodes in the entire OSM project. It was a TIGER data import of a train station, t...

Comments 3 comments Date May 04, 2009

Diary Entry Mapping Market Street in San Francisco

I mapped part of Market Street today from about 4th street to Embarcadero. I focus mostly on transit (bus stops, subway entrances, etc.,) banks,...

Comments 4 comments Date April 28, 2009