GeoJSON Geometry — Polygon with an interior ring
A one-feature FeatureCollection holding a parcel with a courtyard cut out of it, so a reader can be exercised on Polygon in isolation. Coordinates come from the Kestrel Bay territory, so the same shape appears again in every other format in this category.
{
"type": "FeatureCollection",
"features": [
{
"type": "Feature",
"id": "g-polygon-with-hole",
"properties": {
"name": "Polygon with an interior ring",
"kind": "geometry-sample"
},
"geometry": {
"type": "Polygon",
"coordinates": [
[
[
-12.47,
47.056
],
[
-12.452,
47.056
],
[
-12.452,
47.068
],
[
-12.47,
47.068
],
[
-12.47,
47.056
]
],
[
[
-12.465,
47.06
],
[
-12.465,
47.064
],
[
-12.457,
47.064
],
[
-12.457,Specifications
- Format
- GeoJSON (RFC 7946)
- Crs
- WGS 84 (EPSG:4326)
- Coordinate Order
- longitude, latitude
- Encoding
- UTF-8
- Line Endings
- LF
- Geometry Type
- Polygon
- Features
- 1
- Positions
- 10
- Valid
- true
Testing contract
Expected to pass- Scenario
- Parse the collection and inspect the single Polygon geometry.
- Expected result
- The reader reports one Polygon with two rings: a counter-clockwise exterior and a clockwise interior.
What is a .geojson file?
GeoJSON is a JSON-based format for encoding geographic data structures such as points, lines, and polygons, along with their properties. It uses WGS84 longitude-latitude coordinates and standard feature and feature-collection objects. It is a common interchange format for web mapping and GIS.
How to use this file
Use an example GeoJSON file to test geometry parsing, coordinate handling, and mapping libraries or GIS pipelines that render or analyze spatial features.
How to use this file for testing
“GeoJSON Geometry — Polygon with an interior ring” is a deterministic Novus Examples fixture for Geospatial, JSON parsing, Conversion testing. GeoJSON, GPX, and KML files with points, lines, polygons, and tracks — for testing map tools, route parsers, and geo importers.
Documented properties for this file: UTF-8 · LF · GeoJSON (RFC 7946). Compare results against paired or grouped companions on this page when present (clean↔damaged, searchable↔scanned, or format twins) so scores stay reproducible across runs.
Download the file once, keep the path stable in CI or local scripts, and treat the spec table as the contract: dimensions, seeds, field lists, and roles are intentional. Corrupt or invalid samples are labelled as such — expect parsers to fail loudly rather than silently accept them.
Geospatial fixtures publish one invented territory across formats, with the coordinate reference system and feature counts documented in specs. Convert or reproject and diff against the twin in the same group; edge-case geometries state exactly which assumption they are built to break.
Code examples
import geopandas as gpd
gdf = gpd.read_file("polygon-with-hole.geojson")
print(gdf.head())
print(gdf.crs)Related files
- geojsonGeoJSON — Mixed-Geometry FeatureCollectionAll seven RFC 7946 geometry types in a single FeatureCollection. Formats with a single-geometry-type-per-layer model — shapefile, most database tables — cannot hold this in one layer, so it is the fixture that reveals how a converter splits or refuses it.
- geojsonConvert v2 Shapefile Expected GeoJSONGeoJSON semantic target for the five-town shapefile set, preserving point order, CODE/NAME/POP/FOUNDED attributes, and longitude/latitude coordinates; the omitted .cpg is safe because every copied DBF value is ASCII. Stable P8 artifact p8-convert-shapefile-geojson.
- geojsonGeoJSON — Three-Element Positions With AltitudeFour positions with a third element, which RFC 7946 defines as height in metres above the WGS 84 ellipsoid. Two-dimensional pipelines commonly truncate the third element without saying so, and this file is what proves whether yours does.
- gmlGML 3.2 — MultiSurface With an Interior RingGML calls a multipolygon a MultiSurface and its parts surfaceMembers, and nests exterior and interior rings under named elements rather than relying on ring order. This feature holds the holed lake and a solid parcel in one geometry, which is the shape a WFS response usually takes.
- geojsonKestrel Bay Territory — Master GeoJSON (14 features)The master dataset for this category: five towns, three roads, three parcels (one with a courtyard hole), a lake with an island, a buoy MultiPoint and the county boundary, as an RFC 7946 FeatureCollection. Kestrel Bay County is invented: open ocean at 47 N / 12.5 W, matching no real place, settlement, road or parcel.
- geojsonKestrel Bay Territory — Minified GeoJSONThe same 14 features with every optional byte of whitespace removed. Pair it with the pretty-printed master to test that a parser's output is whitespace-independent and that a formatter round-trips without reordering members.
Generated by generation/geospatial.py. Free for any use, no attribution required — license.