Loading…

Coverage

20,438 of 56,681 columns decided — 36.1% · 4,487 bound (7.9%) · 36,243 still unread

Bound: 4,487; 7.9%; a concept was found and asserted for the column.
Refused: 10,870; 19.2%; the column was read and no concept fits. A verdict, not a gap.
Insufficient: 5,081; 9.0%; read, but the evidence did not settle it.
Unanalysed: 36,243; 63.9%; nobody has read this column yet.

56,681 columns in the coverage ledger · read from /api/field-coverage on citytap-prod · source last observed Oct 10, 2026, 10:53 AM

Where the unread columns are

3,026 datasets, 56,681 catalogued fields, 36,243 of them still unread. Every band below is a share of that, worst first. Open one to see its datasets.

Gaps in the data behind this page

36,243 of the 56,681 columns in the coverage ledger have never been analysed.
603 of the 3,026 datasets in the catalog list no columns at all.

Source last observed Oct 10, 2026, 10:53 AM.

Where each note comes from

36,243 of the 56,681 columns in the coverage ledger have never been analysed.
36,243 / 56,681
Source: /api/field-coverage
Check it yourself: /api/field-coverage#/coverage/unanalysed
603 of the 3,026 datasets in the catalog list no columns at all.
603 / 3,026
Source: /api/field-coverage
Check it yourself: /api/field-coverage#/catalog/datasets_no_inventory

These pages state their own gaps: /datasets, /freshness, /scorecard, /scorecard/fields, /analyses, /ontology, /graph, /alerts, any topic page under /domains.

What we have understood

Freshness above is about the data being current. This is about the data being understood: how many of the catalogue's fields carry a meaning we can act on, which datasets are still waiting, and how far the joinable web reaches.

← Citywide scorecard

Datasets by how much of them we have read

Datasets with the most fields left to read

Showing 1–50 of 603
Dataset	Fields	Decided	Understood	Nobody looked	Shared terms
Hurricane Inundation by Evacuation Zone (Map) 2234-9r2y	0	0 —	0	0	0	See every field
Shapefiles of BOA and Community Brownfield Planning Areas 22gm-5ceg	0	0 —	0	0	0	See every field
Environmentally Preferable Procurements 294z-97kb	0	0 —	0	0	0	See every field
NYC Public School Indicators 29nk-6u2k	0	0 —	0	0	0	See every field
Local Law 1 Plan 29wz-ciej	0	0 —	0	0	0	See every field
2014 Orthoimagery Manhattan 2a5m-z82r	0	0 —	0	0	0	See every field
NYCDEP Citywide Catch Basins 2c5m-rke8	0	0 —	0	0	0	See every field
2015 Street Tree Census - Blockface Data 2cd9-59fr	0	0 —	0	0	0	See every field
2012 Orthoimagery Staten Island 2cxm-sdq3	0	0 —	0	0	0	See every field
Bi-Annual Pedestrian Counts (Map) 2de2-6x2h	0	0 —	0	0	0	See every field
Facilities Database - Shapefile 2fpa-bnsx	0	0 —	0	0	0	See every field
Real Time Passenger Information Sign Locations (Map) 2haw-rqv4	0	0 —	0	0	0	See every field
Directory of Nature Centers 2hr8-czpv	0	0 —	0	0	0	See every field
Detention and Placement Incident Reports 2jnq-tef6	0	0 —	0	0	0	See every field
DSNY Garages (Map) 2kdb-mfqb	0	0 —	0	0	0	See every field
VZV Priority Intersections 2nj7-jxah	0	0 —	0	0	0	See every field
Human Services Annual Plan 2p3a-y7d4	0	0 —	0	0	0	See every field
NYC Planimetric Database: Shoreline 2qj2-cctx	0	0 —	0	0	0	See every field
Monthly Flash Report indicators 2ubh-v9er	0	0 —	0	0	0	See every field
LION 2v4z-66xt	0	0 —	0	0	0	See every field
Carshare Locations - Municipal Garages and Lots (Map) 2y2t-x83x	0	0 —	0	0	0	See every field
NYC Automated External Defibrillator (AED) Map 2ync-kihj	0	0 —	0	0	0	See every field
2016 NYC School Survey 38ik-3hib	0	0 —	0	0	0	See every field
Land Acquisition Statistics 39yy-hdfd	0	0 —	0	0	0	See every field
NYC DOE Public School Location Information 3bkj-34v2	0	0 —	0	0	0	See every field
Child Welfare Indicators -Annual and quarterly report indicators 3m2q-9maw	0	0 —	0	0	0	See every field
Centerline 3mf9-qshr	0	0 —	0	0	0	See every field
Seating Locations (Map) 3qgi-jrgw	0	0 —	0	0	0	See every field
2014 Orthoimagery Staten Island - 2 of 2 3r4q-36zy	0	0 —	0	0	0	See every field
Community Development Block Grant (CDBG) Eligibility by Census Tract - FGDB 3u5q-ae5y	0	0 —	0	0	0	See every field
2050s Mean Sea Level 3vjp-ybhy	0	0 —	0	0	0	See every field
Universal Solicitation of Broadband Target Neighborhoods (Map) 3zh4-7hgk	0	0 —	0	0	0	See every field
2008 Orthoimagery Manhattan 3zjh-awfv	0	0 —	0	0	0	See every field
Street and Highway Capital Reconstruction Projects - Intersection (Map) 3zy2-a8eg	0	0 —	0	0	0	See every field
2010 NYC School Survey 42p9-q6fd	0	0 —	0	0	0	See every field
BOUNDARY 484j-8mzq	0	0 —	0	0	0	See every field
AIR_LOT_POLYGON 4gme-r92c	0	0 —	0	0	0	See every field
2020 Neighborhood Tabulation Areas (NTAs) - Mapped 4hft-v355	0	0 —	0	0	0	See every field
DOB Sustainability Compliance Map 4hxk-b29t	0	0 —	0	0	0	See every field
2013-2014 NYC High School Directory 4ks2-3rz5	0	0 —	0	0	0	See every field
2011-2012 Elem MS K-8 4mud-hg2j	0	0 —	0	0	0	See every field
2020 Census Tracts (water areas included) - Mapped 4mvr-i7nd	0	0 —	0	0	0	See every field
2017 - 2018 Young Adult Borough Centers 4nxh-niuc	0	0 —	0	0	0	See every field
Map of NYCHA Community Engagement & Partnership Zones 4p5v-sqmv	0	0 —	0	0	0	See every field
OACE (Office of Adult and Continuing Education) Sites 4u36-44pe	0	0 —	0	0	0	See every field
New York City's Flood Vulnerability Index Map 4vym-qrg3	0	0 —	0	0	0	See every field
Citywide Mobility Survey - Survey Zones (Map) 4xfb-z29j	0	0 —	0	0	0	See every field
NYC Planimetric Database: Hydrography Structures 53au-zf7x	0	0 —	0	0	0	See every field
Borough Boundaries (water areas included) 53n2-m85m	0	0 —	0	0	0	See every field
19th Annual Report of the Commission 56t2-bzsy	0	0 —	0	0	0	See every field

The web of datasets and fields

A line means a dataset carries a field tagged with a shared vocabulary term. Two datasets on the same term speak the same language about it, which is what makes a cross-dataset question possible. Sharing a term is not the same as a working join — the dataset page says whether a specific pair compiles.

Bipartite. A dimension node is a conformed-dimension family; a dataset node is a catalog dataset; an edge means that dataset carries at least one column tagged with that dimension, and names the columns that carry it.

No field list yet: We hold no columns for these at all.
Nothing read yet: We hold their columns and have decided none of them.
Under half read: Fewer than half their fields carry a verdict.
Half read: At least half their fields carry a verdict.
Most read: At least three quarters of their fields carry a verdict.
Every field decided: Every field carries a verdict — which does not mean every field is understood.

How many of an edge's tagging columns carry a method that actually read something. Zero means the edge rests entirely on carried lexical tags.

Two datasets on the same dimension node share a vocabulary, which is weaker than a join. GET /api/datasets/{fourFour}/bindings/{partner} decides whether a specific pair compiles; executing it additionally needs both marts present.