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Mark Sherry
Here's an updated version of the Canadian city street orientations, now featuring every provincial capital. (I posted this a few minutes ago, but deleted it after realizing Guelph was using Calgary's data.) 1/13
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Mark Sherry 14 Jul 18
Replying to @alfedenzo
Other differences from the original: orientations are weighted by length of street segment, and I'm not simplifying the topology, so a curvy road isn't viewed as a straight line between the points where it intersects with other roads. 2/13
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Mark Sherry 14 Jul 18
Replying to @alfedenzo
But wait, there's more! I also rendered maps of each city with the streets color-coded according to direction, with streets at right angles coloured the same way, making grids easier to spot. 3/13
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Mark Sherry 14 Jul 18
Here they are, alphabetically: Calgary (), Cambridge (), Charlottetown () and Edmonton () 4/13
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Mark Sherry 14 Jul 18
Fredericton (), the GTA, Guelph (), and Halifax () 5/13
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Mark Sherry 14 Jul 18
Iqaluit (), Kitchener (), KW as a whole, and London () 6/13
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Mark Sherry 14 Jul 18
Montreal (), Ottawa (), Quebec City () and Regina () 7/13
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Mark Sherry 14 Jul 18
St John's (), Stratford (), Toronto () and Victoria () 8/13
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Mark Sherry 14 Jul 18
Waterloo (), Whitehorse (), Windsor () and Winnipeg () 9/13
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Mark Sherry 14 Jul 18
Replying to @OurYellowknife
Finally, Yellowknife () 10/13
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Mark Sherry 14 Jul 18
Replying to @alfedenzo
Thoughts: KW is a mess (no surprise to anyone who lives here), but St John's is worse. Cities that seem messy from the radial plot are often the result of multiple off-angle grids growing against each other (e.g. Montreal, Quebec City, Winnipeg). 11/13
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Mark Sherry 14 Jul 18
Replying to @alfedenzo
Given the messiness of KW, Cambridge and Guelph are remarkably tidy. In Cambridge, you can see the influence of Preston and Galt, but Hespeler's grid orientation is dominant. (Or rather, both are aligned with the surrounding country grid.) 12/13
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Mark Sherry 14 Jul 18
Replying to @alfedenzo
The geo data for some cities include a lot of countryside too, but I don't think it affects things much, as they're very sparse. If you look at Windsor, there's a clear North-South bias just from the rectangular nature of their grid. 13/13
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Mark Sherry 15 Jul 18
Replying to @gboeing
Especially for anyone new following me because of this, you should check out , who wrote the OSMnx, the library I used to generate these images, and who also wrote the original version of the script I used to make the radial plots:
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Mark Sherry 16 Jul 18
Replying to @alfedenzo
By request, here's Kingston
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Mark Sherry 16 Jul 18
Replying to @alfedenzo
And from elsewhere in the thread, Hamilton: Vancouver: And Lund, Sweden:
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Mark Sherry 16 Jul 18
Replying to @alfedenzo
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Mark Sherry 16 Jul 18
Replying to @alfedenzo
St Catharines. Note how the north/south part of the grid is compass-aligned, the large parts of the east-west (especially the major streets) are not aligned east-west, but instead are aligned with the lake. This means most major intersections aren't perpendicular.
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