Urban Data
@urban-data.bsky.social
Official social media for the Urban Data working group. Researchers at the intersection of data, cities, people, and space. Read more and join us at https://urban-data-science-eaamo.github.io
Pinned
Urban Data
@urban-data.bsky.social
· Nov 6
30DayMapChallenge
Daily mapping challenge happening every November!
30daymapchallenge.com
To get this feed started, our group will be participating in the #30daymapchallenge! On (most) days of November we will be posting a new map, by a new author, on a new theme. First batch of maps incoming... 🗺️
30daymapchallenge.com#maps-stats
30daymapchallenge.com#maps-stats
"I used flashtext, a high-performance keyword search algorithm, to scan articles and count these mentions. Then I map, for example, how often French newspapers mention Allemagne (Germany) or how often Chinese outlets mention 美国 (USA)", says Matt. Play with the map on mfranchi.net/global-gossip!
Global Gossip
mfranchi.net
December 10, 2025 at 2:47 PM
"I used flashtext, a high-performance keyword search algorithm, to scan articles and count these mentions. Then I map, for example, how often French newspapers mention Allemagne (Germany) or how often Chinese outlets mention 美国 (USA)", says Matt. Play with the map on mfranchi.net/global-gossip!
This visualization uses randomly sampled news articles from digital news providers in 55 'ego' countries since 2015, courtesy of Nokia Bell Labs Cambridge's Responsible AI Group. Country mentions are qualified by CLDR, which compiled names of 257 countries as expressed differently in 186 languages.
December 10, 2025 at 2:47 PM
This visualization uses randomly sampled news articles from digital news providers in 55 'ego' countries since 2015, courtesy of Nokia Bell Labs Cambridge's Responsible AI Group. Country mentions are qualified by CLDR, which compiled names of 257 countries as expressed differently in 186 languages.
#30DayMapChallenge day 24: Places and their names
How often do places name other places?
@mfranchi.bsky.social mapped global media attention patterns using 415K news articles from 55 countries. The analysis tracks how often outlets mention other nations. Explore at mfranchi.net/global-gossip!
How often do places name other places?
@mfranchi.bsky.social mapped global media attention patterns using 415K news articles from 55 countries. The analysis tracks how often outlets mention other nations. Explore at mfranchi.net/global-gossip!
December 10, 2025 at 2:47 PM
#30DayMapChallenge day 24: Places and their names
How often do places name other places?
@mfranchi.bsky.social mapped global media attention patterns using 415K news articles from 55 countries. The analysis tracks how often outlets mention other nations. Explore at mfranchi.net/global-gossip!
How often do places name other places?
@mfranchi.bsky.social mapped global media attention patterns using 415K news articles from 55 countries. The analysis tracks how often outlets mention other nations. Explore at mfranchi.net/global-gossip!
Dates come from two sources: the record of changes from 1964-2025 maintained by Jonathan Belcher (roster.transithistory.org/MBTARouteHis...) and Thomas Humphrey's book on the development of the MBTA's bus network (roster.transithistory.org/MBTABUSDEV.pdf). Shapefiles are sourced from MassGIS.
roster.transithistory.org
December 9, 2025 at 5:01 PM
Dates come from two sources: the record of changes from 1964-2025 maintained by Jonathan Belcher (roster.transithistory.org/MBTARouteHis...) and Thomas Humphrey's book on the development of the MBTA's bus network (roster.transithistory.org/MBTABUSDEV.pdf). Shapefiles are sourced from MassGIS.
"These bus routes have been inherited from various older private and public bus companies, converted from street cars or trackless trollies, and created whole cloth based on arising needs. Together they represent the complex and evolving history of bus transportation in Greater Boston," he writes
December 9, 2025 at 5:01 PM
"These bus routes have been inherited from various older private and public bus companies, converted from street cars or trackless trollies, and created whole cloth based on arising needs. Together they represent the complex and evolving history of bus transportation in Greater Boston," he writes
November is over, but we still have some #30DayMapChallenge entries to share! And for our transport-themed day 26 map, MBTA data analyst Joe Hilleary takes us on a ride back in time: he shows current bus routes in Greater Boston by the earliest known year in which a direct percursor route ran a bus.
December 9, 2025 at 5:01 PM
November is over, but we still have some #30DayMapChallenge entries to share! And for our transport-themed day 26 map, MBTA data analyst Joe Hilleary takes us on a ride back in time: he shows current bus routes in Greater Boston by the earliest known year in which a direct percursor route ran a bus.
#30DayMapChallenge day 22: Natural Earth
@lgreenstreet.bsky.social worked on a visualization of invasive species in New York State. Invasive species presence correlates with the presence of road, rail, and urban areas due to a combination of human activity introducing them and observation density.
@lgreenstreet.bsky.social worked on a visualization of invasive species in New York State. Invasive species presence correlates with the presence of road, rail, and urban areas due to a combination of human activity introducing them and observation density.
November 25, 2025 at 6:09 PM
#30DayMapChallenge day 22: Natural Earth
@lgreenstreet.bsky.social worked on a visualization of invasive species in New York State. Invasive species presence correlates with the presence of road, rail, and urban areas due to a combination of human activity introducing them and observation density.
@lgreenstreet.bsky.social worked on a visualization of invasive species in New York State. Invasive species presence correlates with the presence of road, rail, and urban areas due to a combination of human activity introducing them and observation density.
Map by @jessiefin.bsky.social, in collaboration with Francisco Marmolejo-Cossío, Jacqueline Caulderon, and Lizet Jarquin. Data from INEGI.
This map (+ Day 11) is part of their ongoing collaboration continuing some of the work from the 2024 EAAMO social hackathon in San Luis Potosí, Mexico.
This map (+ Day 11) is part of their ongoing collaboration continuing some of the work from the 2024 EAAMO social hackathon in San Luis Potosí, Mexico.
November 24, 2025 at 6:53 PM
Map by @jessiefin.bsky.social, in collaboration with Francisco Marmolejo-Cossío, Jacqueline Caulderon, and Lizet Jarquin. Data from INEGI.
This map (+ Day 11) is part of their ongoing collaboration continuing some of the work from the 2024 EAAMO social hackathon in San Luis Potosí, Mexico.
This map (+ Day 11) is part of their ongoing collaboration continuing some of the work from the 2024 EAAMO social hackathon in San Luis Potosí, Mexico.
#30DayMapChallenge day 20: water
This map of Arsenic and Cadmium levels in Mexico's water show non-trace concentrations of Total and Soluble Arsenic and Cadium. Points are colored by the presence of high amounts of contaminants, and sized by their relative concentration.
tinyurl.com/map20wtr
This map of Arsenic and Cadmium levels in Mexico's water show non-trace concentrations of Total and Soluble Arsenic and Cadium. Points are colored by the presence of high amounts of contaminants, and sized by their relative concentration.
tinyurl.com/map20wtr
November 24, 2025 at 6:53 PM
#30DayMapChallenge day 20: water
This map of Arsenic and Cadmium levels in Mexico's water show non-trace concentrations of Total and Soluble Arsenic and Cadium. Points are colored by the presence of high amounts of contaminants, and sized by their relative concentration.
tinyurl.com/map20wtr
This map of Arsenic and Cadmium levels in Mexico's water show non-trace concentrations of Total and Soluble Arsenic and Cadium. Points are colored by the presence of high amounts of contaminants, and sized by their relative concentration.
tinyurl.com/map20wtr
#30DayMapChallenge day 19: projections
@jennahgosciak.bsky.social created a gif that visualizes NYC neighborhoods under different map projections. While most atrocities are clear only at national or global levels, her maps show interesting local deformities!
@jennahgosciak.bsky.social created a gif that visualizes NYC neighborhoods under different map projections. While most atrocities are clear only at national or global levels, her maps show interesting local deformities!
November 24, 2025 at 2:42 PM
#30DayMapChallenge day 19: projections
@jennahgosciak.bsky.social created a gif that visualizes NYC neighborhoods under different map projections. While most atrocities are clear only at national or global levels, her maps show interesting local deformities!
@jennahgosciak.bsky.social created a gif that visualizes NYC neighborhoods under different map projections. While most atrocities are clear only at national or global levels, her maps show interesting local deformities!
"Grains are scattered in clustered patterns, merged as a landmass, converted into a smooth density field using KDE, and blended with edge-fading to mimic coastal shelves. Gaussian filtering adds coherence. Elevation bands and lighting produce naturalistic terrain with sand, grass, rock, and snow."
November 22, 2025 at 4:27 PM
"Grains are scattered in clustered patterns, merged as a landmass, converted into a smooth density field using KDE, and blended with edge-fading to mimic coastal shelves. Gaussian filtering adds coherence. Elevation bands and lighting produce naturalistic terrain with sand, grass, rock, and snow."
Elijah says: "In this project I created a generative terrain builder that transforms virtual scatterings of rice-shaped polygons into coastlines, heightmaps, and fully shaded 3D landscapes"
November 22, 2025 at 4:27 PM
Elijah says: "In this project I created a generative terrain builder that transforms virtual scatterings of rice-shaped polygons into coastlines, heightmaps, and fully shaded 3D landscapes"
Out of this world!
@eappelson.bsky.social explored fantasy map-making using rice digital to form tactile terrains for #30DayMapChallenge day 18. He was inspired by handmade maps created by outlining real piles of rice and simulated rice scattering. Grain density becomes elevation.
@eappelson.bsky.social explored fantasy map-making using rice digital to form tactile terrains for #30DayMapChallenge day 18. He was inspired by handmade maps created by outlining real piles of rice and simulated rice scattering. Grain density becomes elevation.
November 22, 2025 at 4:27 PM
Out of this world!
@eappelson.bsky.social explored fantasy map-making using rice digital to form tactile terrains for #30DayMapChallenge day 18. He was inspired by handmade maps created by outlining real piles of rice and simulated rice scattering. Grain density becomes elevation.
@eappelson.bsky.social explored fantasy map-making using rice digital to form tactile terrains for #30DayMapChallenge day 18. He was inspired by handmade maps created by outlining real piles of rice and simulated rice scattering. Grain density becomes elevation.
"Day 15 immediately caught my interest because it prompted reflection on energy consumption. I was also curious to experiment with kepler.gl to explore Uganda’s Census findings. When I connected fire with cooking and energy with the electricity grid, the theme felt like a perfect match," says Sylvia
November 21, 2025 at 6:35 PM
"Day 15 immediately caught my interest because it prompted reflection on energy consumption. I was also curious to experiment with kepler.gl to explore Uganda’s Census findings. When I connected fire with cooking and energy with the electricity grid, the theme felt like a perfect match," says Sylvia
#30DayMapChallenge 15: Fire
@sylviaimani.bsky.social visualized how Uganda’s transition toward electric cooking aligns with the reach of the national grid. Regions with denser grid networks show a strong correlation with higher household adoption of electric cooking technologies.
@sylviaimani.bsky.social visualized how Uganda’s transition toward electric cooking aligns with the reach of the national grid. Regions with denser grid networks show a strong correlation with higher household adoption of electric cooking technologies.
November 21, 2025 at 6:35 PM
#30DayMapChallenge 15: Fire
@sylviaimani.bsky.social visualized how Uganda’s transition toward electric cooking aligns with the reach of the national grid. Regions with denser grid networks show a strong correlation with higher household adoption of electric cooking technologies.
@sylviaimani.bsky.social visualized how Uganda’s transition toward electric cooking aligns with the reach of the national grid. Regions with denser grid networks show a strong correlation with higher household adoption of electric cooking technologies.
Are you running from your responsibilities? On our #30DayMapChallenge day 14 entry, we tell you where!
Atmika Pai maps running clubs with OpenStreetMap, which includes amenities such as water and restrooms. Running club data comes from @shaylaruns (Instagram).
atmikapai13.github.io/iconic-runcl...
Atmika Pai maps running clubs with OpenStreetMap, which includes amenities such as water and restrooms. Running club data comes from @shaylaruns (Instagram).
atmikapai13.github.io/iconic-runcl...
November 21, 2025 at 2:33 PM
Are you running from your responsibilities? On our #30DayMapChallenge day 14 entry, we tell you where!
Atmika Pai maps running clubs with OpenStreetMap, which includes amenities such as water and restrooms. Running club data comes from @shaylaruns (Instagram).
atmikapai13.github.io/iconic-runcl...
Atmika Pai maps running clubs with OpenStreetMap, which includes amenities such as water and restrooms. Running club data comes from @shaylaruns (Instagram).
atmikapai13.github.io/iconic-runcl...
#30DayMapChallenge day 13: 10-min map
Atmika Pai set the clock. "I used Marauders, an AI-powered spatial intelligence tool, to create a heatmap of 311 indoor air quality complaints in NYC" she says. "All it took was downloading the dataset from Open Data and uploading!"
tinyurl.com/13-map-311
Atmika Pai set the clock. "I used Marauders, an AI-powered spatial intelligence tool, to create a heatmap of 311 indoor air quality complaints in NYC" she says. "All it took was downloading the dataset from Open Data and uploading!"
tinyurl.com/13-map-311
November 21, 2025 at 12:16 AM
#30DayMapChallenge day 13: 10-min map
Atmika Pai set the clock. "I used Marauders, an AI-powered spatial intelligence tool, to create a heatmap of 311 indoor air quality complaints in NYC" she says. "All it took was downloading the dataset from Open Data and uploading!"
tinyurl.com/13-map-311
Atmika Pai set the clock. "I used Marauders, an AI-powered spatial intelligence tool, to create a heatmap of 311 indoor air quality complaints in NYC" she says. "All it took was downloading the dataset from Open Data and uploading!"
tinyurl.com/13-map-311
For #30DayMapChallenge day 11, a minimal map from @kennypeng.bsky.social.
Kenny extracts minimal elements from a not-as-minimal-as-it-seems object: the Manhattan street grid. "I show how Manhattan’s numbered grid of streets and avenues is more complicated than you might realize," he says.
Kenny extracts minimal elements from a not-as-minimal-as-it-seems object: the Manhattan street grid. "I show how Manhattan’s numbered grid of streets and avenues is more complicated than you might realize," he says.
November 17, 2025 at 2:43 PM
For #30DayMapChallenge day 11, a minimal map from @kennypeng.bsky.social.
Kenny extracts minimal elements from a not-as-minimal-as-it-seems object: the Manhattan street grid. "I show how Manhattan’s numbered grid of streets and avenues is more complicated than you might realize," he says.
Kenny extracts minimal elements from a not-as-minimal-as-it-seems object: the Manhattan street grid. "I show how Manhattan’s numbered grid of streets and avenues is more complicated than you might realize," he says.
They say: "We softly overlap point locations of these ladrilleras across Mexico (downloaded from DENUE) and scores for proximity to these kilns across the country, computed as the total inverse distance each ladrillera. This score is presented for each 50km point across the country, on a log-scale."
November 15, 2025 at 5:19 PM
They say: "We softly overlap point locations of these ladrilleras across Mexico (downloaded from DENUE) and scores for proximity to these kilns across the country, computed as the total inverse distance each ladrillera. This score is presented for each 50km point across the country, on a log-scale."
#30DayMapChallenge day 10: Air
@jessiefin.bsky.social + Francisco Marmolejo-Cossío visualize the presence of ladrilleras, or brick kilns, which emit pollution across the state. Data cleaned by Jacqueline Calderón and Lizet Jarquin at UASLP.
Full interactive map: tinyurl.com/map10-air
@jessiefin.bsky.social + Francisco Marmolejo-Cossío visualize the presence of ladrilleras, or brick kilns, which emit pollution across the state. Data cleaned by Jacqueline Calderón and Lizet Jarquin at UASLP.
Full interactive map: tinyurl.com/map10-air
November 15, 2025 at 5:19 PM
#30DayMapChallenge day 10: Air
@jessiefin.bsky.social + Francisco Marmolejo-Cossío visualize the presence of ladrilleras, or brick kilns, which emit pollution across the state. Data cleaned by Jacqueline Calderón and Lizet Jarquin at UASLP.
Full interactive map: tinyurl.com/map10-air
@jessiefin.bsky.social + Francisco Marmolejo-Cossío visualize the presence of ladrilleras, or brick kilns, which emit pollution across the state. Data cleaned by Jacqueline Calderón and Lizet Jarquin at UASLP.
Full interactive map: tinyurl.com/map10-air
#30DayMapChallenge day 9 asked us to get off our screens. @annaloganmc.bsky.social's "analog" map is a hand-painted postcard! 📫
"I chose to paint a postcard of a map of Ann Arbor where I currently live showing the Huron River!" she says
"I chose to paint a postcard of a map of Ann Arbor where I currently live showing the Huron River!" she says
November 14, 2025 at 8:42 PM
#30DayMapChallenge day 9 asked us to get off our screens. @annaloganmc.bsky.social's "analog" map is a hand-painted postcard! 📫
"I chose to paint a postcard of a map of Ann Arbor where I currently live showing the Huron River!" she says
"I chose to paint a postcard of a map of Ann Arbor where I currently live showing the Huron River!" she says
You can play with the map, visualizing individual points rather than cells or hiding chain coffee shops, at the link: gsagostini.github.io/documents/ma...
NYC Coffee Shop Density — World Urbanism Day (D3)
gsagostini.github.io
November 14, 2025 at 5:09 PM
You can play with the map, visualizing individual points rather than cells or hiding chain coffee shops, at the link: gsagostini.github.io/documents/ma...
#30DayMapChallenge day 8: Urban
Chae Won Lee uses the Overpass API to visualize current coffee shop density in New York with an interactive map. Here's a snippet.
Chae Won Lee uses the Overpass API to visualize current coffee shop density in New York with an interactive map. Here's a snippet.
November 14, 2025 at 5:09 PM
#30DayMapChallenge day 8: Urban
Chae Won Lee uses the Overpass API to visualize current coffee shop density in New York with an interactive map. Here's a snippet.
Chae Won Lee uses the Overpass API to visualize current coffee shop density in New York with an interactive map. Here's a snippet.
Gabriel writes: "Many accessibility works do a great job at quantifying disparate access to a single type of service. But urban access implies a relative ordering of things close and far to you. This is a cheeky title that proposes a spatial relationship between transit and food deserts."
November 13, 2025 at 2:27 PM
Gabriel writes: "Many accessibility works do a great job at quantifying disparate access to a single type of service. But urban access implies a relative ordering of things close and far to you. This is a cheeky title that proposes a spatial relationship between transit and food deserts."
Day 7 of #30DayMapChallenge asked us to think about accessibility. @gsagostini.bsky.social considers two metrics of access simultaneously: distance to a Subway and distance to the subway.
November 13, 2025 at 2:27 PM
Day 7 of #30DayMapChallenge asked us to think about accessibility. @gsagostini.bsky.social considers two metrics of access simultaneously: distance to a Subway and distance to the subway.