kml1.2 KB

KML — Polygons With innerBoundaryIs Holes

Two polygons that each carry an `innerBoundaryIs` ring: a parcel with a courtyard and a lake with an island. KML names its rings explicitly instead of relying on winding order, so converting to GeoJSON means deciding the winding rather than copying it.

Geospatial Conversion testing Error handling

Preview — first 31 lineskml

<?xml version="1.0" encoding="UTF-8"?>
<kml xmlns="http://www.opengis.net/kml/2.2">
  <Document>
    <name>Kestrel Bay areas</name>
    <Placemark>
      <name>Mill Court</name>
      <description>Residential parcel with a courtyard</description>
        <Polygon>
          <outerBoundaryIs><LinearRing>
            <coordinates>-12.47,47.056 -12.452,47.056 -12.452,47.068 -12.47,47.068 -12.47,47.056</coordinates>
          </LinearRing></outerBoundaryIs>
          <innerBoundaryIs><LinearRing>
            <coordinates>-12.465,47.06 -12.465,47.064 -12.457,47.064 -12.457,47.06 -12.465,47.06</coordinates>
          </LinearRing></innerBoundaryIs>
        </Polygon>
    </Placemark>
    <Placemark>
      <name>Wither Lake</name>
      <description>Lake with a wooded island</description>
        <Polygon>
          <outerBoundaryIs><LinearRing>
            <coordinates>-12.52,47.04 -12.495,47.04 -12.488,47.053 -12.506,47.061 -12.529,47.052 -12.52,47.04</coordinates>
          </LinearRing></outerBoundaryIs>
          <innerBoundaryIs><LinearRing>
            <coordinates>-12.51,47.048 -12.511,47.0525 -12.504,47.053 -12.503,47.047 -12.51,47.048</coordinates>
          </LinearRing></innerBoundaryIs>
        </Polygon>
    </Placemark>
  </Document>
</kml>

Specifications

Format: KML 2.2
Namespace: http://www.opengis.net/kml/2.2
Crs: WGS 84 (EPSG:4326)
Coordinate Order: longitude,latitude[,altitude]
Encoding: UTF-8
Line Endings: LF
Placemarks: 2
Geometry: Polygon
Inner Boundaries: 2
Outer Boundaries: 2
Styled: false

Testing contract

Expected to pass

Scenario: Convert to GeoJSON and inspect ring order and winding.
Expected result: Each polygon has its outer ring first and its inner ring second, and the exterior is rewound counter-clockwise as RFC 7946 requires.

What is a .kml file?

KML (Keyhole Markup Language) is an XML format for representing geographic features, popularized by Google Earth and Google Maps. It supports placemarks, paths, polygons, styling, and overlays with WGS84 coordinates. It is widely used for sharing annotated maps and 3D geospatial content.

How to use this file

Use an example KML file to test geospatial parsing, placemark and style handling, and converters between KML, GeoJSON, and GPX.

How to use this file for testing

“KML — Polygons With innerBoundaryIs Holes” is a deterministic Novus Examples fixture for Geospatial, Conversion testing, Error handling. 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 · KML 2.2. 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.