dabreegster

9 ms·

31.
by dabreegster 5y ago
https://thecityfix.com/blog/how-bogota-is-turning-7000-citiz... Here's a "success story." Cities spend lots of time gathering feedback from citizens on transportation changes, but the feedback process ca
32.
by dabreegster 6y ago
I wrote some of these back in college for a research-focused STEM group; not about the tech industry culture, but at least some comp sci bits: https://dabreegster.github.io/poetry/college/overheard_gdc.h... https
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by dabreegster 6y ago
I believe Citymapper has the edge on multi-modal routing, at least if they support your city.
34.
by dabreegster 6y ago
A WIP tool, browser or offline, to evaluate what amenities are within a 15m walk or bike ride: https://a-b-street.github.io/docs/side_projects/fifteen_min.... And a whimsical arcade game based on the concept of Sa
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by dabreegster 6y ago
Surprises from emergent behavior are some of the most satisfying things about working on this. I'm not trying to extract rush hour patterns or anything quantitatively, just show two timeseries plots to the user and have them figure out
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by dabreegster 6y ago
https://github.com/a-b-street/abstreet/issues/85#issuecommen... Here's a video of the problem with the current approach, which is storing a count per hour. No sliding windows; 7:59am and 8:01am are diffe
37.
by dabreegster 6y ago
I haven't had nearly enough caffeine today to process this properly, but thank you -- it partly makes sense, and it's plenty to go off of later!
38.
by dabreegster 6y ago
Not particularly. The data comes from a deterministic traffic simulation, and I just want to show people roughly how their changes to a road network affect throughput along road segments. I'm interested in showing differences like &quo
39.
by dabreegster 6y ago
This is basically the approach I'm doing now, with granularity being 1 hour. The problem is that when you're in the middle of an hour, the bucket for the live sim only accounts for half of the hour, but the stored bucket from the
40.
by dabreegster 6y ago
To be more specific, I'm measuring throughput along road segments in a deterministic traffic simulation. Differences would occur when the user modifies the road network. The modifications often have no effect on most roads, but some wi
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by dabreegster 6y ago
Does anybody know an approach for downsampling time series when you need to compare two downsampled series? Let's say: 1) You measure millions of (time, count) events, covering 24hrs. 2) You downsample this somehow to save space. 3) Yo
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by dabreegster 6y ago
1) There are different choices you can make about simulating individual agents or aggregate flows along roads. Assuming you're interested in the former, you can advance the simulation in discrete time-steps using approaches like the in
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by dabreegster 6y ago
Don, Wow, thanks for the detailed ideas! I've resisted joining academia myself, but that shouldn't prevent finding partners there. Recently I started working with 3 transportation/civil engineering professors, and their exper
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by dabreegster 6y ago
Hi, I'm Dustin, and I've been working on abstreet.org for about ~2.5 years to fight car dependency in cities. Aiming to explore and advocate for short-term transportation changes like creating low-traffic neighborhoods and fleshin
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by dabreegster 6y ago
As an end-of-year treat from the A/B Street ( https://abstreet.org ) team, we made a game where you deliver presents around Seattle. Instead of focusing on how people use roads to get around, this game focuses on where people
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15-minute Santa: a game about Seattle’s land use(santa.abstreet.org)
1 points by dabreegster 6y ago|1 comments
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by dabreegster 6y ago
One of the authors of stplanr recently wrote a survey paper about all of the open source transportation software around: https://github.com/Robinlovelace/open-gat Between AccessMap ( https://www.accessmap.io&
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by dabreegster 6y ago
Beautiful work! Do you have any demos of how more complex intersections are rendered? https://www.openstreetmap.org/#map=18/47.64626/-122.34944 is a decent stress test. And I'm curious, how do you compute roa
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by dabreegster 6y ago
http://www.arewelearningyet.com is a good overview. And if there's something missing, trying to create it yourself could be a way to learn the language, even if the result doesn't actually do everything you need.
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by dabreegster 6y ago
What, really? It's also an "urban planning tool," does that help?
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by dabreegster 6y ago
Citybound looks awesome, but development seems a bit stalled. I've been in touch on r/citybound before, am following the project closely. There's also https://github.com/Uriopass/Scale , which has a reall
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by dabreegster 6y ago
Whoa, this would be awesome! Strongly consider publishing open datasets. :) Could you talk at all about how it works, or what privacy issues you've dealt with?
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by dabreegster 6y ago
https://github.com/dabreegster/abstreet/blob/master/docs/new... Not quite one-click, but you can try the one-shot importer. You'll probably hit some issues; I have strict assertions to prevent
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by dabreegster 6y ago
There's been a small edit war in OpenStreetMap to keep up with the access restriction changes. Right now no, but when I grab fresh new OSM data, some roads will probably just disappear. Need to support no-through-access.
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by dabreegster 6y ago
1) Mode choice is fixed, coming from https://www.psrc.org/activity-based-travel-model-soundcast . Next work focus will be on adjusting mode choice when edits make it favorable to bike/walk. Route assignment is mentioned
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by dabreegster 6y ago
Could you give https://github.com/dabreegster/abstreet/suites/828409393/art... a shot? If that URL disappears or you don't want to re-download the whole .zip, just the fixed binary is https:/&
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by dabreegster 6y ago
I gave a [talk]( https://www.youtube.com/watch?v=chYd5I-5oyc ) to a Rust meetup with lots of gory details, if it's interesting
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by dabreegster 6y ago
There are lots of data quality and simulation assumption issues that prevent results from being meaningful. I'm mostly positioning this as a way to get people interested in coming up with specific ideas, but of course I'd love to
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by dabreegster 6y ago
https://github.com/dabreegster/abstreet/blob/master/docs/new... Biggest barrier is lack of trip demand data. If you come up with how many people leave from building1 to building2 at time T using som
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by dabreegster 6y ago
https://github.com/dabreegster/abstreet/issues/65 Thanks for reporting! I'll try fixing this blind (no Windows machine handy) and send a new build; it'd be great if someone could confirm it.

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