Info - CThood

Currently available for Athens, Greece.

Is your city an X-minute city??

Unveiling Access inequities within the X-minute city paradigm

What places can you access within a short walk?
Are parks just around the corner but grocery stores out of reach?
And are the everyday essentials equitably accessible across your city?
This is what the interactive CThood seeks to highlight.

Utilizes detailed location and pedestrian network data from open sources to estimate which destinations—and how many—are reachable within a short walk across the city.

Provides a clear, intuitive view of how 5- and 15-minute walking environments are shaped by the street network and the spatial distribution of essential services.

Reveals local access inequities under the X-minute framework by showing (a) the number of accessible destinations by type and (b) the areas that meet selected accessibility criteria.

Open Data

Pedestrian Network

CThood uses OpenStreetMap (OSM) , an open-source mapping platform containing worldwide geographical data, to collect data on the pedestrian network.

More specifically, the OSMnx package was used to extract walkable streets, by setting the network type to “walk”. In this way, streets categories unrelated to pedestrian movement such as motorways, service roads and cycleways are excluded.

Places

Points-of-interest are collected from OpenStreetMap, reflecting various types of everyday places. Specifically, CThood includes playgrounds, grocery stores, sport facilities, metro stations, bus and tram stations, cafes, restaurants, education facilities, greenspaces, supermarkets, cultural places, nightlife places, pharmacies, public squares, and clothing stores.

Methodology

The methodoly is inspired and adapted by the paper of Lucas, K., Van Wee, B., & Maat, K. (2016). A method to evaluate equitable accessibility: combining ethical theories and accessibility-based approaches. Transportation, 43, 473-490.

More detailed information will be shared soon.

Interactivity

The Layers

There are four primary layers that can be toggled on and off in the upper left of the map.

The walksheds and the walkable street network: The walkable street network we used to calculate the walksheds from OpenStreetMap.

Places collected: The places collected from OpenStreetMap.

Accessibility - Egalitarianism: Number of accessilbe places across locatiosn.

Accessibility - Sufficientarianism: Locations that fulfill certain accessibility conditions set by the user

The walksheds

Hovering over CThood will display the 5 and 15-minute walksheds.

To switch between the 5 and 15-minute walksheds,
click the “5 minutes” or “15 minutes” buttons in the upper left of the map, respectively.

The Places

By clicking on the destinations included in our analysis will become visible.

The color of each destinations is based on its type (e.g., park, playground, public square etc).

On the right side of the screen, a “Filter Visible Places” button allows users to customize the map view by choosing which types of destinations to display.
Clicking on a destination activates a popup that includes further details about it.

Accessibility & Equality (egalitarian perspective)

Click to color each block based on how many places can be reached within a 5- or 15-minute walk.

You can choose specific types of places to focus on through the panel on the left. Use the slider in the top-right corner to adjust the accessibility thresholds and corresponding colors based on your preference.

This layer uncovers access inequities among different locations.

Accessibility Conditions (sufficientarian perspective)

Click to show a layer that depicts which locations fulfill certain accessibility conditions set by the user (e.g., color in green locations with access to at least one playground, one grocery store, and one pharmacy).
The conditions can be adapted by the user using the panel located on the left of the screen.

Gini Index - Lorenz Curve - Sufficintarian Threshold

on the bottom right of the screen an interactive diagram is displayed that shows the Gini Index for the selected type of destinations, the Lorenz curve (blue line), the share of locations that do not fulfill the accessibility conditions set by the user (red line), and the share of locations that have lower access than the currently selected location (yellow line).

Map Style

By clicking on the , , or buttons in the upper right corner of the map will re-initialize and modify the style of the entire map.