Jeff Allen
Jeff Allen
@jamaps.bsky.social
maps, graphics, cities (mostly toronto), .. website: https://jamaps.github.io/ github: https://github.com/jamaps ~9-5 M-F: https://schoolofcities.utoronto.ca/research-type/data-visualization/
525 followers180 following106 posts
recent chart showing voter turnout in recent municipal elections in Ontario -- -- couple more charts here: schoolofcities.github.io/posts/voter-...
recent cool project by my colleague Aniket Kali clustering neighbourhoods in Toronto by voting patterns schoolofcities.github.io/place-and-po...
recent scrolly/animated map of tours for visiting public libraries by transit check out more by @lanrickbennett.bsky.social @uoftcities.bsky.social here: schoolofcities.utoronto.ca/opportunitie...
recent maps/analysis led by Polina Gorn on transit + walking proximity to public libraries in Toronto see more here: schoolofcities.github.io/posts/spatia...
recent collab with @bigcitypolitics.bsky.social -- -- created a few interactive maps/charts showing correlation between neighbourhood characteristics and mayoral election results in Toronto since amalgamation -- -- view here: schoolofcities.github.io/place-and-po...
updating a base map of Toronto this morning, trying to balance landscape + infrastructure -- -- higher-res here: jamaps.github.io/maps/toronto...
made a quick chart of Bike Share activity before, during, and after the World Cup game yesterday in Toronto ----- more charts here :) schoolofcities.github.io/fifa-world-c...
recently sketched an elevation profile of yonge st, from lake ontario to holland marsh -- higher-res here: jamaps.github.io/maps/yonge-e...
here's a recent chart of travel mode share by age in toronto --- can view more (and interactive) charts created by Polina Gorn and I here: schoolofcities.github.io/transportati...
recent experiment mapping population density in toronto in a 3d/voxel style with three.js --- higher res: jamaps.github.io/maps/tor-pop... --- #maps #gis #toronto #threejs
recently updated a few charts showing growth in bike share ridership in toronto --- view more here: schoolofcities.github.io/bike-share-t... #toronto #cycling #data
a few views of new (2025) city of toronto aerial imagery that i was looking at earlier today --- added it to compare with historical imagery on our interactive page here: schoolofcities.github.io/historical-a... #toronto #aerial #gis
recently made this little calendar (2025) to look at patterns in bike share toronto ridership higher-res: jamaps.github.io/maps/bike-sh... #toronto #cycling #data
Jeff Allen reposted
A language map of Montreal by @jamaps.bsky.social which inspired a language map of NYC by me. These and much more in this week's (free) newsletter. www.howtoreadthisch.art/visualizatio...
recently mapped knowledge of french and english in montreal -- (bit of a tri-variate viz experiment) higher-res here: jamaps.github.io/maps/montrea... #montreal #maps #languages #geography
recently mapped knowledge of Arabic in/around Toronto higher-res: jamaps.github.io/maps/toronto... #toronto #qgis #maps #language #geography
recently updated a map showing growth of laneway housing / garden suites in Toronto (2018-2025) check out charts, interactive map, and a few words here: schoolofcities.github.io/gentle-densi... #toronto #maps #housing
Made a quick map of knowledge of Spanish in/around Toronto -- (This was a bit of an experiment - testing out a process of interpolating census data to a bivariate dot grid) Higher-res: jamaps.github.io/maps/toronto... #toronto #qgis #maps #language #geography
recent data doodle - trying to chart trip density along Line 1 in Toronto higher res. and a few words here: schoolofcities.github.io/transportati... #ggplot2 #dataviz #toronto #transit #ttc
always fun to look at old TTC maps like this one from 93 --- when the Harbourfront LRT had a bold line / rapid transit branding shortly after it opened img source: transittoronto.ca/archives/map... #toronto #ttc #maps
recently wrote a blog post about creating a website for viewing historical aerial imagery in Toronto check it out here! :) mdl.library.utoronto.ca/mdl-blog/cre... #toronto #history #maps #gis
little saturday experiment --- trying to parse out travel times and speeds from gtfs schedule data to style a route diagram for the new Eglinton Line 5 higher-res here: jamaps.github.io/maps/line5-t... #transit #toronto #maps #dataviz
check out these detailed maps by Isabeaux Graham showing land-use and demographics along the Eglinton Line 5 corridor higher res here: schoolofcities.utoronto.ca/maps-of-line... #toronto #transit #maps #gis
recent dataviz tracking changes in development / building volumes along the Eglinton Line 5 corridor during its construction few words + higher res here: schoolofcities.utoronto.ca/mapping-deve... #toronto #transit #maps #dataviz
Toronto open data has some cool nighttime aerial imagery from 2020 can view it alongside other historical aerial imagery on our page here: schoolofcities.github.io/historical-a...
made a quick interactive #map of building heights in #toronto (2025 data) big fan of #tippecanoe -> #pmtiles -> #maplibre -> #github pages workflow, can pretty easily take a ~300mb .shp like this and viz it in-browser (no fancy db, server, or saas hosting) schoolofcities.github.io/toronto-buil...
recent fun scrolly-maps by Aniket Kali and I on history of languages in Toronto schoolofcities.github.io/languages/to... #toronto #history #maps #languages
couple interesting maps of climate change vulnerability across Canada by Isabeaux Graham on our team check out more here: schoolofcities.utoronto.ca/layers-of-cl... #maps #gis #canada #climateChange
recently updated a grid gallery of my maps on my personal website/portfolio - check it out here :) jamaps.github.io/maps.html #maps #dataviz #gis
interesting short-lived TTC subway map from 2007 with 5 lines/routes source: transittoronto.ca/spare/0053.s... #toronto #transit #ttc #maps
Chart comparing minimum wages to local living wages across Canada Created by Isabeaux Graham on our team for this report: schoolofcities.utoronto.ca/wp-content/u...