Jeff Allen

@jamaps.bsky.social

490 Followers 176 Following

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/

line chart comparing Toronto Bike Share trips on Thursday July 2 during the Portugal vs Croatia match relative to a 6-week baseline --- trips run above baseline before the match, dipping below baseline during the game, then spiking after the game ended
elevation profile chart of Yonge Street from Lake Ontario (in Toronto) to the Holland Marsh (in East Gwillimbury), showing a gradual climb from lake level (76m) up to peaking around 320m before descending slightly toward the north end.
Three story art deco_ish building next to classic bay-and-gable red brick row house
Ternary chart showing how travel mode share varies by age group in Toronto. High active travel and car use at younger age, shifting to higher transit use as young adults, then increasingly more car use at older ages.
grid map of toronto in a 3d view where the heights of grid cells pertain to population density
bar chart showing bike share ridership in toronto by month from 2014 to 2026 --- chart shows steady growth over time with seasonal fluctuations
Two side-by-side charts showing travel times on the 510 Spadina between Sussex and Lake Shore Blvd., comparing October 2025 to March 2026. Overall the charts show that median travel time decreasing by about 1 minute, with variations by day of the month.
four aerial air photos arranged in a grid A) top-left: crowd at convocation hall B) top-right: ontario line construction at moss park C) bottom-left: new cycling infrastructure at bloor and st. george D) bottom-right: moonscape at ontario place
Oblique 3d bar chart showing number of bike share trips in toronto per hour from march 11 2026 to april 3 2026. Weekdays show bi-modal distributions, weekends do not.
12 month calendar arranged in a 3x4 grid where each day is coloured by the number of bike share trips --- unsurprisingly, there are many more trips in warmer months
Map of Montreal and the surrounding region using a grid of dots to visualize the % of the population that can speak French and English via different colours. Size of dots indicate population density.
Map of the Greater Toronto Area covered with squares arranged in a 1km grid spacing. The colour of the squares indicate the % of people that speak Arabic. The size of the squares is the total population. The map shows that there are relatively more Arabic speakers in northern and western Mississauga, northern Oakville, Milton, and northwestern Scarborough.
screenshot of an interactive map showing location of garden suites and laneway housing in Toronto as light green-yellow dots on a blue background
Map of the Greater Toronto Area covered with dots arranged in a 1km grid spacing. The colour of the dots indicate % of people that speak Spanish. The size of the dot is the total population. The map shows that there are relatively more Spanish speakers in the west and north-west of Toronto and in some outer municipalities like Bradford, Oakville, and Brampton.
Arc diagram linking stations along Line 1 in Toronto, where brighter and thicker arcs indicate more trips between stations.
Side-by-side cropped screenshots of a 1993 Toronto transit map: Left is showing central Toronto, right is showing the map legend
.gif with two side by side aerial images of downtown Toronto - one from 1939 and other from 2021 - with a slider sliding back and forth showing change over time
Horizontal route diagram of stops along the new Eglinton Line 5 scaled by the travel times between station and coloured by average speed between stations along the line
Series of stacked maps showing how the new Eglinton Line 5 transit routes relates to building footprints; space devoted to cars, bikes, and pedestrians; zoning; green space; population density; household income; and senior populations.
series of 3 graphics: A) shows a perspective 3d building massing rendering of the Eglinton Line 5 LRT corridor centred on Yonge-Eglinton highlighting which buildings have been built from 2013 to 2025 B) shows horizontal skyline view of the entire LRT corridor showing which buildings have been built from 2013 to 2025 and C) bar chart of LRT stations showing total and percent of volume change of buildings within 800m of stations
blue and white dots on a black background in a pattern that somewhat resembles a snowflake
Screenshot of a web-page with two side-by-side images of downtown Toronto. Left is nighttime aerial imagery from 2020, and the right is daytime aerial imagery from 2024.
heatmap with layer of blue-to-white points showing density of snow plows in Toronto on a black background
screen capture of a website with a series of maps showing where speakers of specific languages live in Toronto and surrounding municipalities
Multivariate map of Canada showing environmental vulnerabilities – biodiversity loss, water stress, soil degradation, and deforestation – alongside accumulated climate events from the past several years – including floods, wildfires, long-term sea level rise, and droughts. The map combines these eight impacts via small pie charts, that when combined represent the intensity of climate-change risks.
map of the Annex neighbourhood in Toronto with a blue background and shades of blue to white indicating buildings, roads, trees, and sidewalks.
5x10 grid of thumbnail images of maps I've made over the past couple years or so
greyscale map of beirut and the surrounding area showing topography (highlighting hills and mountains) and building footprints (highlighting urban/built-up area)
topographic hillshade map of cuba - land is shown in shades of greens and browns, water is a light blue
topographic hillshade map of the island of taiwan - land is shown in shades of greens and browns, water is a light blue
topographic hillshade map of the island of Ireland - land is shown in shades of green-yellow, water is a light blue
map of glen stewart ravine in toronto with a dark background, glowing green lines to show contours, blue lines for streams, and dashed line for paths
Bar chart comparing provincial or territorial minimum wages to living wages in 13 locations across Canada. The living wage is based on what a parent needs to earn in a two-parent household with two children, to support housing costs and other essentials based on location of residence. The bar chart is linked to locations of a map of Canada. Minimum wage varies from 15 to 20 dollars per hour, while living wage ranges from 20 to 30 dollars per hour.
Map of Canada with a dot layer symbolizing different types of 'local solutions', organizations and initiatives working to solve complex challenges that communities are facing across Canada. Dots are coloured by different categories (e.g. housing, climate change, etc.) and clustered by province/territory.
Minimal map of Ottawa showing building footprints and rivers
Map of the City of Toronto shaded on two gradients A) from light blue-ish green to light red based on elevation and B) from light to dark showing slope of the land. The map highlights overall elevation patterns in the City, as well as highlights big river valleys and escarpments
Graphic of six maps stacked on top of each other of Finch West Line 6 and surrounding land-use: Finch West LRT route, building footprints, population density, space for cars, trees and green space, and zoning. Each map is at the same geographic scale and area.
Line chart showing population within 800m from Line 6 Finch West LRT stations. There are two lines, one for the population in 1996 and the other population in 2021. The difference between the lines shows where there has been population growth or decline over this 25 year period.
Stacked bar chart showing the number of apartment units in Toronto by year of construction with categories for private, TCHC, and other social housing. The vast majority were built in the 1960s and 1970s, with a minor up-tick in recent years.
screenshot of map of rail trail route in Albuquerque
linear heatmap of parking ticket density in the City of Toronto
Choropleth map of the greater Toronto and Hamilton area showing what % of children (aged 6-17) are driven to school. The map legend includes a bar chart ranking municipalities in the region. Toronto is the lowest at 31% and Aurora the highest at 51%.
screen-capture of a scrolly-telling website showing a variety of maps of Toronto's underutilized parking lots
a brick-paved raised pedestrian crossing with temporary orange-and-black traffic barrels on either side indicating recent construction
grid of 6 postcards of Toronto, each is an abstract map or data visualization of sorts
map of southwest Scarborough (Ontario) showing streets, rail, neighbourhoods, and land cover - all depicted entirely via text (of varying fonts and colours)
Map of the City of Toronto shaded from light yellow to darker red via an index of heat vulnerability, a combined index that highlights which neighbourhoods are most vulnerable to extreme temperatures. The map is overlaid with the location of outdoor swimming and wading pools.
A visualization of Toronto showing % of daily trips by walk, car, bicycle, and public transit. There is one large map at the top with all four modes 'weaved' together to visualize patterns. Underneath this map are four smaller maps, one for each mode.
screenshot of an interactive web-map for viewing and comparing historical aerial imagery in Toronto - this screenshot specifically compares downtown Toronto in 1947 to 2024
Photo of skyline of Taipei from 02/2025. Layers of buildings with a bit of green in the horizon.
poster showing 25 maps, each of a different city, with each showing a 1km grid of population density overlaid by major rail transit routes
screenshot of a map of neighbourhoods in central Toronto showing % of trips made by bicycle
network heat-map showing patterns of where people tend to ride bike share in Toronto
Map of Yellowknife coloured by property tax revenue per km2. The map highlights how the central, denser, downtown area has higher revenue / is more productive on a per area basis.
view of a forest and horizon through an almost opaque dark grey blind