159acb249b
in tests it seems confirmed that caching noticeably improves performance (Polly noticed that age layer is noticeably faster without being aware that it is cached more aggressively, in testing in general all layers benefit from caching even at zoom level 18 for relatively minor storage cost and differences in the first use performance that are basically not possible to measure (or at least I failed to measure them) caching will be especially important as more people will use the site and will help reduce server costs see also #1062 proposing further simplification of this code |
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Colouring London
How many buildings are there in London? What are their characteristics? Where are they located and how do they contribute to the city? How adaptable are they? How long will they last, and what are the environmental and socio-economic implications of demolition?
Colouring London is a web-based citizen social science project designed to help address these questions by crowdsourcing and visualising twelve categories of information on London’s buildings.
Structure
This repository will contain open-source code for the project which:
- stores building footprint polygons and source metadata
- allows site users to record building attribute data
- serves map tiles rendered from collected data
- allows site visitors to download the collected building attribute data
Building attribute data collected as part of the project will be made available for download under a liberal open data license (ODbL).
Setup and run
Test the application:
You can try out the Colouring London application by setting up your own development environment, which includes the option to load test data from OpenStreetMaps (OSM). See docs/setup-dev-environment.
Last updated March 2022
Create a production version of the application:
We also have documentation on setting up a production environment here: docs/setup-production-environment.
Last updated December 2021
Note: There are additional useful documentation within the /docs folder.
Acknowledgements
Colouring London was set up at the Centre for Advanced Spatial Analysis (CASA), University College London and is now based at The Alan Turing Institute. Ordnance Survey is providing building footprints required to collect the data, facilitated by the Greater London Authority (GLA), and giving access to its API and technical support.
License
Colouring London
Copyright (C) 2018-2022 Tom Russell and Colouring London contributors
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
Contributors
Thanks goes to these wonderful people (emoji key):
 polly64 🎨 🤔 🖋 🔍 |
 Tom Russell 🎨 🤔 💻 📖 |
 mz8i 💻 🤔 |
 dominic 🤔 🖋 |
 Adam Dennett 🤔 |
 Duncan Smith 🤔 |
 martin-dj 💻 |
 MeldaS 💻 |
 Tarn Hamilton 🎨 |
 Louis Jobst 🎨 |
 Ed Chalstrey 💻 📖 |
 Mateusz Konieczny 💻 📖 |
 Mike Simpson 💻 📖 |
This project follows the all-contributors specification. Contributions of any kind welcome!
Even more thanks go to Colouring London contributors, funders, project partners, consultees, advisers, supporters and friends - everyone involved in the project.