kaomapi/london-atlas

Kaomapi London Atlas

Curated, analysis-ready London datasets for the Kaomapi project, built from the London Datastore. One directory per domain under curated/; every domain ships its parquets plus provenance.json (source URLs, licences, vintages, raw sha256s), QC_REPORT.md (independently re-derived counts and validations), DATA_DICTIONARY.md, and the _*.py collector scripts that reproduce it end-to-end. manifest.parquet lists every shipped file with sha256.

Geography is keyed to ONS codes (boroughs = E09…, with geo_level tags for region/country aggregates), so domains join on (geo_code, period).

Domains

All curated parquets carry data from 2016 onwards only (project cutoff — periods starting before 2016 are dropped by src/apply_atlas_cutoff.py; the raw source files retain full history).

Domain	Contents	Grain	Coverage	Licence
housing	House-price-to-earnings ratios — housing_affordability.parquet (1,385 rows, median + lower-quartile, residence & workplace); council rents — la_average_rents.parquet (252 rows, 2g1k1); housing-association rents — rsl_average_rents.parquet (313 rows, 24rn6); MHCLG live tables on rents/lettings/tenancies — govuk_rents_live_tables.parquet (4,894 rows, 16 tables, 292 measures)	borough / region / country × year	2016–2025	OGL v2 / v3
waste	Household recycling rates — recycling_rates.parquet (315 rows); borough Reduction & Recycling Plans: tidy actions table — rrp_actions.parquet (4,163 actions, all 33 boroughs, plan + annual updates + GLA actions index). The 93 source plan documents (DOCX/PDF) ship under unstructured/waste/rrp/	borough × year; action-level	2016–2026	OGL v2 / v3
airquality	NO₂ diffusion-tube site results — diffusion_tubes.parquet (22,727 rows, 3,140 sites, all 33 boroughs); the 2024 executive summary PDF ships under unstructured/airquality/	monitoring site × year	2021–2024	not specified at source (see caveat)
stateoflondon	The GLA's annual State of London report — 6 PDF editions (2022–2025, 111–153 pp), unstructured reference material only (no parquet, per the processing rules), under unstructured/stateoflondon/	London-wide narrative	2022–2025	not specified at source (see caveat)

Layout: curated / unstructured / raw

Three trees, per the Kaomapi processing rules:

• curated/ — structured tidy parquets (spreadsheet sources, structured workflow) + per-domain provenance/QC/dictionary/collectors.
• unstructured/ — the 100 narrative documents (91 RRP DOCX, 2 RRP PDF, the air-quality executive summary PDF, 6 State of London report PDFs) under human-readable names taken from the catalogue resource titles (e.g. Hackney 2023 to 2026 RRP - Year Two Update.docx).
• raw/ — ALL 129 original source files (structured and unstructured; London Datastore + GOV.UK MHCLG live tables) under their original as-downloaded filenames, byte-identical to what the collectors processed (sha256-verified against provenance and the ingest manifests).

files_index.parquet is the map: one row per source resource (129) with domain, dataset_id, resource_id, resource_name, file_name, raw_path, unstructured_path (null for structured sources), format, workflow, bytes, sha256, source_url, feeds. resource_id joins into rrp_actions.parquet, so every action row traces to its source document:

con.sql("""
  SELECT a.action_ref, a.action_title, f.file_name, f.unstructured_path, f.raw_path
  FROM 'hf://datasets/kaomapi/london-atlas/curated/waste/rrp_actions.parquet' a
  JOIN 'hf://datasets/kaomapi/london-atlas/files_index.parquet' f USING (resource_id)
  WHERE a.borough = 'Hackney' LIMIT 3
""")

All 4,163 rrp_actions rows join to a source file: the 2,850 plan/update rows to their DOCX/PDF (both trees), the 1,313 doc_role='actions_index' rows to the structured GLA index XLSX (raw/ only — unstructured_path is null for structured sources).

Source datasets

London Datastore dataset	id
Ratio of House Prices to Earnings, Borough	2z04n
Household Waste Recycling Rates, Borough	vd67o
Waste Reduction and Recycling Plans (RRPs)	2r801 + 33 borough datasets
Air Quality Monitoring – Diffusion Tube Results	e66gp
Local Authority Average Rents	2g1k1
Registered Social Landlords Average Rents	24rn6
State of London (annual reports)	2k5rr
MHCLG live tables on rents, lettings & tenancies	GOV.UK (external)

Full per-file provenance (download timestamps, raw sha256, per-resource URLs) in each domain's provenance.json.

Caveats

• Time cutoff: curated parquets exclude all periods starting before 2016; full history remains in raw/.
• Air quality & State of London licences: the e66gp and 2k5rr source pages do not state a licence. The data is GLA-published on the London Datastore (whose default terms are OGL); treat downstream use accordingly and check the source page before redistribution.
• City of London is suppressed at source in most residence-based affordability years (small ASHE resident sample) — absence is suppression, not zero.
• 2013 break in the house-price source series (Land Registry → ONS HPSSA).
• RRP action statuses are self-reported by boroughs; plan-stage actions have no status column (status='unknown').
• DOCX/PDF sources ship as unstructured documents (unstructured/, friendly names; originals in raw/); spreadsheets as structured tidy parquet — per the Kaomapi processing rules.

Use

import duckdb
con = duckdb.connect()
con.sql("""
  SELECT geo_name, value
  FROM 'hf://datasets/kaomapi/london-atlas/curated/housing/housing_affordability.parquet'
  WHERE period='2024' AND basis='residence' AND measure='house_price_earnings_ratio'
  ORDER BY value DESC LIMIT 5
""")

Built 2026-06-06 from the opencity_london harvest of the London Datastore.