Contour lines – Guyancourt - CA Saint-Quentin-en-YvelinesCourbes de niveaux Guyancourt - CA Saint-Quentin-en-Yvelines

Courbes de niveaux Guyancourt - CA Saint-Quentin-en-YvelinesContour lines – Guyancourt - CA Saint-Quentin-en-Yvelines

APIJoinable5/7Query nowOpen workbench Subscribe🇫🇷France

This API provides geographic contour line data for the municipality of Guyancourt, published by the Communauté d'agglomération Saint-Quentin-en-Yvelines (SQY). The dataset was constructed in 2019 and reflects conditions as of that year, with a precision scale of 1/500. Coordinates are referenced in the RGF93 – CC49 system (EPSG:3949). Geographic coverage is limited to the municipality of Guyancourt. Technical inquiries can be directed to the SQY open data contact address. The dataset is useful for topographic analysis, urban planning, and land elevation mapping at a local scale.### Informations générales de la classe d'entité - **Origine / Source** : SQY - **Date de construction** : 2019 - **Actualité** : 2019 - **Précision** : 1 / 500 - **Système de référence** : RGF93 – CC49 (EPSG:3949) - **Contact** : opendata@sqy.fr - **Exhaustivité géographique** : Commu…

crime-justice

⬇ Export CSV List records Run verified request Schema OpenAPI spec Read the docs

Trust score

How is this computed?

good

Weighted across five axes. Tap a ring for what it measures.

Data schema (5 fields)

Filterable via the API (5)

objectididcontourgeometryshape_len

Click a field to see example values.

Field	Type	Description
objectid	integer	Internal object identifier for the feature.Internal object identifier for the feature.
id	integer	Unique identifier of the contour line record.Unique identifier of the contour line record.
contour	integer	Elevation value in meters of the contour line.Elevation value in meters of the contour line.
geometryGeometry	string	Line geometry of the contour, as coordinate list.Line geometry of the contour, as coordinate list.
shape_len	number	Length of the contour line geometry, in meters.Length of the contour line geometry, in meters.

Schema captured from datafair 13 hours ago.

Query the data

Pick columns and a sort, then fetch a live preview straight from the source. Choose an API-filterable column (marked ▾) under “Where” to pick from its list of values.

Where=

Sort by

Sample data (5 records)

objectid	id	contour	geometry	shape_len	_score
1	1	186	{"type":"LineString","coordinates":[[2.0912754916504643,48.76322775812148],[2.091153637318166,48.76326873777092],[2.0910506026926994,48.76332662248707],[2.0910179644148252,48.76334415192208],[2.0910165059464947,48.763346786332086],[2.091016199329018,48.76334771655467],[2.0910163854296933,48.76334870823755],[2.090992475766767,48.76350141957138],[2.0909942613635977,48.76351640107246],[2.0910009484314447,48.76352553138106],[2.0910144956268537,48.76353566483376],[2.091058033130168,48.76354580994222]…	108.251702987806	—
2	2	185	{"type":"LineString","coordinates":[[2.091413803153608,48.763350863360756],[2.091377044873407,48.763282776863335],[2.0913472189965976,48.76322891123525],[2.09132114129762,48.76318127193998],[2.0913085787976637,48.76316010920988],[2.0912774044141513,48.763122123012586],[2.091219977899655,48.76314275432987],[2.0910435515291375,48.76316431348018],[2.0910211317775045,48.763169279518834],[2.091011962676729,48.76317280532607],[2.09100132558027,48.76317874062375],[2.0909940138659553,48.76319628796906],…	163.02627009220203	—
3	3	184	{"type":"LineString","coordinates":[[2.09142968087878,48.76324880223813],[2.0913930260807216,48.76318184077974],[2.091360306232243,48.76312672101274],[2.0912791126257635,48.7630277842076],[2.0912248958932667,48.763047262749936],[2.091135307547064,48.76308542188256],[2.0910221968113984,48.76311047794637],[2.0909569570165902,48.763135559436186],[2.090881279586191,48.76317779023918],[2.090856115775119,48.7632381817687],[2.0908463736912397,48.76329158315546],[2.0908283553839633,48.76334622939867],[2…	203.47392502881502	—
4	4	183	{"type":"LineString","coordinates":[[2.0914649108653527,48.76318240957449],[2.091420532719849,48.76310764970898],[2.091413075605278,48.76309266021196],[2.091353822324741,48.76301267327645],[2.091322976739196,48.762983955033185],[2.0912801913901076,48.76296820748348],[2.0912355633179955,48.76298240255],[2.091141276795431,48.76301099114944],[2.091070136423797,48.76304129272699],[2.0910232618427975,48.763051676373536],[2.090901951421805,48.76309831441904],[2.0907936919655645,48.76315872704801],[2.0…	238.06359114525802	—
5	5	182	{"type":"LineString","coordinates":[[2.0912811444983865,48.762915570226184],[2.0911829767524552,48.76294679568358],[2.091068044284859,48.76298164323604],[2.09102428589281,48.76299513729856],[2.0910075041056144,48.762998881647576],[2.090966799559023,48.76300961000828],[2.090836491559738,48.763053988578825],[2.090767122562626,48.763091478294854],[2.0907192812413102,48.763145526821006],[2.0906968966740984,48.76317633026525],[2.090691345692564,48.763224785900114],[2.0906832167180145,48.7632920117210…	269.255622255785	—

Live sample captured at profiling time — values may have changed upstream.

Verification Status

Using the API

Configuration

Base URL: https://opendata.sqy.fr/data-fair/api/v1/datasets/courbes-de-niveaux-guyancourt-ca-saint-quentin-en-yvelines/
Format: openapi

License

Licence Ouverte 2.0 (France / Etalab)Open

✓ Redistributable
✓ Attribution required

Query examples

curl -s 'https://opendata.sqy.fr/data-fair/api/v1/datasets/courbes-de-niveaux-guyancourt-ca-saint-quentin-en-yvelines/lines?size=20' -H 'Accept: application/json'

First 20 records of the dataset as JSON.

Full API documentation ↗

Dataset

Volume & freshness

Records

2.2k

2210

Last upstream update

18 days ago

2026-09-14

License

No license declared upstream.

○ Documentation○ Data dictionary○ Versioning

Source: datafair

Machine-readable & source

OpenAPI spec JSON

Embed this badge in a README or wiki — it always shows the latest verification state and quality tier.