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What if everyone were a cyclist?

And what if everyone had an even probability of visiting some other fellow cyclist who lived between 3 and 8 kilometers away from them? This would be a beautiful and strange world. Here is what the traffic might look like in that world, assuming there were no effects of congestion. Thicker lines have more bikes:

map

Line thickness is scaled to the log of a measure of betweenness, based on optimal paths for bicycles, as defined according to current OSM data and OSRM‘s default bicycle routing profile. ‘People’ were located randomly inside their 2010 home census block and routes were calculated between random pairs of people where the straight-line distance between them was between 3 and 8 kilometers. The distance limits are to simulate reasonable cycling trips and work against MAUP effects.

This is the first step in a project to develop mode-specific street hierarchies, which can be used in transport maps where auto-based classification schemes are undesireable or unavailable. In the coming days, I’ll work on a better weighting scheme (than population density) and look at other modes and cities. I’ll be working the results into a poster for NACIS 2017, showing the different hierarchical classifications that result for cycling, walking, and driving modes, hopefully across three cities with widely different development patterns (Cincinnati, Toronto, …?)

More to come soon!

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Posted in: Design | Maps | Silly Bullshit
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A silly academic paper about Cincinnati’s 591-6000 roadkill dataset

I wrote this paper for a class, not for an actual audience, so please moderate your harshest criticisms. It was the final project of my last class ever!! Such relief.

A silly paper

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Posted in: Data | Silly Bullshit
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Recursive grids for density measures

I’ve been wanting to do this for ages… and I finally did!

The idea is this:

  1. Create a square.
  2. If the square has more than n things inside it, divide it into four parts.
  3. Do the same for each of those squares and so on recursively.

My recent pet project1, cul-de-sacs (threshold = 10 or less per):

quadgrid

Dayton got a bit cut off, unfortunately. Trust me though: it has plenty of sprawl! This image sort of gives you an idea how the process works.

Population density, based on 2010 census blocks (threshold = 100 people or less per):

population density cincinnati quadgrid

14 levels deep! This one took a couple hours. Click through for a larger image.

Many more to come, I’m sure, now that I’ve written the script…

Show 1 footnote

  1. I love the idea of a density measure of sprawl!
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Posted in: Data | Maps | Silly Bullshit
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sticking around

bus-detective-stickers

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Posted in: Silly Bullshit
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KINDA T-shirts now available

Just in time for Xmas, KINDA t-shirts are now available for purchase at Rock, Paper, Scissors in Over-the-Rhine!

KINDA logo

(I also have the TANK T-shirts there too)

TANK Transit Authority of Northern Kentucky logo

The KINDA shirts are printed on grey-white Gildan tees in small through extra large. The TANK shirts are printed on a slightly lighter Tultext 50/50 cotton/poly tee, available in small through large. The TANK shirts are available in both brown and grey.

Price is $20. If you’re not able to make it to OTR, you can also just email me and have one delivered straight to your door(!) for an extra $5 shipping.

Wear one to your next public meeting! Or while you’re riding your bike past some poor bus stuck in traffic ;-)

Who the hell named these transit agencies anyway?

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Posted in: Silly Bullshit
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Car Wars: Return of the Gentry

Star Wars is not a story of a war between stars but a war about them. Stars set the scale of the series, it’s characters travelling in great loops about their massive references, always thinking on the scale of planets and moons and whole races of people. As the scale of their epic battle dictates the scale of their thoughts and attacks, so cars set the scale of our struggle today. Our American lives orbit these machines.

At the height of the battle we see our powerful protagonists, the rich, on the edge of a knife splitting between dark and light, seclusion or civilization. The tide is turning, and the rebel alliance may gain the upper hand…

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Posted in: Aphorism | Silly Bullshit
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