Facebook RapiD predicted roads in Duango, Mexico

This tutorial was originally part of a joint workshop between DirectRelief, NetHope, and Facebook at the 2019 NetHope Global Summit in San Juan, PR.

The team I work with at Facebook has been busy releasing and updating RapiD, a version of the primary OpenStreetMap (OSM) iD editor that helps every mapper make fast, high-quality, and accurate edits using roads suggested by our AI-assisted road import process. We’ve been expanding OSM in countries like Thailand, Indonesia, and now Malaysia with a robot-assisted process that pairs advanced imagery processing to find likely roads in fresh aerial imagery with human oversight to confirm…


North Carolina got new State House and State Senate district maps this week. At PlanScore, we helped a number of observers and experts watching the rapid map drawing process evaluate the maps under consideration and develop an informed opinion.

This was a very rapid redistricting process, starting with a court ruling less than three weeks ago throwing out North Carolina’s state legislative maps as an unconstitutional partisan gerrymander and ordering lawmakers to draw up new ones in two weeks. September 17 was the deadline to propose and accept new maps for both state legislative chambers.

North Carolina Education Lottery officials used a lotto machine with numbered balls to pick from among remedial State Senate plans, a completely normal way to conduct redistricting business (photo: WRAL)

Here’s a summary of the…


Here’s a preliminary exploration of a new data format for storing U.S. electoral precincts, a follow-up to Open Precinct Data (April 2018).

Imagine if you could easily correlate detailed voting results from OpenElections.net or state boards of elections with mapped polygons and census geography over time.

Open precinct data supports a variety of needs. It provides missing geography to other data projects and makes community additions and conversation possible via a git-style mechanism. …


With the mid-term elections in full swing and campaigns focused on the districts we have, PlanScore has had a quiet few months. Earlier in the year Pennsylvania redrew its U.S. House districts with a rush of competing plans submitted by participants from all over the state’s political landscape. PlanScore’s Nicholas Stephanopoulos reviewed them all using our models and described the process on the Election Law Blog. Last month, the Virginia General Assembly had until October 30 to pass a remedial map after a district court in Virginia struck down eleven House of Delegates districts on racial gerrymandering grounds. …


Claudia Preciado from Remix test rides a scooter in Austin, TX

In the past year, cities have been prompted to rapidly re-examine the management and regulation of transportation services due to the influx of micromobility. This recent movement has illuminated major opportunities to expand transportation options while highlighting several challenges for widespread adoption and support. In the context of data, the conversation has evolved quite differently from TNCs just a few years ago. Cities are creating detailed data requirements for operators and are successfully obtaining that information as an input for smarter future transportation plans.

We surveyed over a dozen emerging micromobility data sharing policies in places like Nashville, Chicago, Seattle


Several weeks ago, I spent an extended weekend at the fifth (of five) Geometry in Redistricting conference. Apart from speaking and participating in a panel on law, tech, and gerrymandering, organizer Moon Duchin asked for my help organizing the conference hackathon. One theme I heard repeated throughout the event centered on the difficulty of finding reliable precinct geography and election results.

Precinct shapes in Wisconsin, covering Madison (center) and Milwaukee (right)

There’s an opportunity here for a new data project focused on connecting existing academic and independent efforts with durable, unique, permanent identifiers for nationwide voting precincts. Imagine if you could easily correlate detailed voting results from OpenElections.net (OE) or…


On February 13 we launched PlanScore.org into the whirlwind of Pennsylvania’s disputed congressional plan. Our mission is to help citizens evaluate new redistricting plans for partisan skew and to elevate the conversation on partisan gerrymandering with new historical data for state and U.S. congressional district plans. It’s been an exciting couple of weeks. What did we learn, and how are we doing at reaching our goals?

Every district plan is designed to do a job: apportioning voters into Congressional districts so they can elect members to the U.S. House, typically following traditional redistricting criteria like compactness, contiguity, and preservation…


Vibrant cities rely on the seamless connectivity of people and ideas. Streets enable these connections: your city’s community members need good streets to access jobs, move safely and sustainably, and live well.

Here at Remix, we’re excited to pilot a new product to design city streets.

We’re designing it on top of the new data standard called SharedStreets, which is being developed by the National Association of City Transportation Officials (NACTO) and the Open Transport Partnership. We need your input to help us build the right thing! 🎉

In his seminal book The Image of the City (1960), American urban planner Kevin Lynch placed streets and paths at the start of our understanding of cities in a list of five elements: streets, edges, districts, nodes, and landmarks.

Why we’re doing it

For planners, transportation engineers, and urban designers, streets are the raw networks…

Michal Migurski

Oakland/SF Bay Area technology & open source GIS. @Remix and @PlanScore, previously at @mapzen, @codeforamerica, and @stamen. Frequently at @geobreakfast.

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