| --- |
| license: cc0-1.0 |
| pretty_name: Open Data Notes (synthetic city-service tables) |
| language: |
| - en |
| tags: |
| - synthetic |
| - tabular |
| - csv |
| - teaching |
| size_categories: |
| - 1K<n<10K |
| configs: |
| - config_name: bus_stop_accessibility_2025 |
| data_files: data/bus_stop_accessibility_2025.csv |
| - config_name: library_opening_hours_2026 |
| data_files: data/library_opening_hours_2026.csv |
| - config_name: street_tree_inventory_sample_2024 |
| data_files: data/street_tree_inventory_sample_2024.csv |
| --- |
| |
| # Open Data Notes: synthetic city-service tables |
|
|
| **Every value in this dataset is synthetic.** The tables describe a fictional city. No real city, |
| place, survey, organisation or person is described, and the numbers must not be used as facts |
| about anywhere. They are made for teaching: data cleaning, joins, grouping and simple charts. |
|
|
| | table | rows | columns | |
| |---|---:|---| |
| | `bus_stop_accessibility_2025.csv` | 1,240 | stop id, name, district, x/y in metres, shelter, bench, step-free access, tactile paving, audio announcements, survey date | |
| | `library_opening_hours_2026.csv` | 38 | branch id, name, district, opening hours for each day of the week | |
| | `street_tree_inventory_sample_2024.csv` | 5,000 | tree id, species (common and Latin), district, street, x/y in metres, year planted, trunk diameter, height, condition | |
|
|
| Coordinates are metres on a local grid, not latitude and longitude. Species names are real tree |
| species; everything about the trees is generated. |
|
|
| ## How it was made |
|
|
| `generate.py` builds all three files from a fixed seed with the Python standard library only. |
| Running `python generate.py` reproduces `data/` byte for byte. |
|
|
| ## Companion site |
|
|
| The same tables are described at https://www.arthsingh.com/open-data. That site is part of a |
| research project on automated web agents: it records visits (time, path, request headers, a keyed |
| hash of the IP address), as its privacy page explains. It does not set cookies or store full IP |
| addresses. |
|
|
| ## Licence |
|
|
| CC0 1.0. No attribution required. |
|
|
