KML er Google Earth-formatet til visualisering af geodata på en virtuel globus. Egnet til præsentationer, undervisningsprojekter og kommunikation med kunder.
Vigtigste funktioner

Om formatet KML
KML is a language for describing geographic data, invented for Google Earth and later adopted as an OGC standard. The file is text: inside are placemarks, lines, outlines, their styles and labels. It opens with a double click in Google Earth and attaches in Google My Maps, QGIS and ArcGIS.
OpenStreetMap maps are exported to KML when the result has to be shown to another person: a client, colleagues, students. The features land on the globe, a click shows their properties, and the file itself can be sent by email — the recipient needs no GIS, Google Earth is enough.
In the file all the layers are laid out in folders named after the layers, each feature keeps its OSM tags in the ExtendedData block, and lines and fills get a color and a width. Coordinates are WGS84, as the specification requires. Roads, water and greenery lie on the ground surface, while buildings are extruded into volume: height is taken from the height tag, or computed from the floor count in building:levels at 3.5 meters per floor, and if neither is present the house gets six meters.
In Google Earth such an export looks like a three-dimensional city right away. If you do not need the volume, switch the buildings layer off in the tree on the left. For sending by email KMZ is handier — the same document in compressed form.
Hvilket program åbner KML-filer
Følgende programmer og applikationer kan åbne, redigere og arbejde med KML (Keyhole Markup Language)-filer (.kml), der er eksporteret fra OSM2CDR:
Format specifications
- Open standard
- 3D coordinates supported
- Lossless (no quality loss)
- Stores feature attributes
- Output: 1 file
- KML 2.2 (OGC). Direct import in Google Earth, Google Maps, ArcGIS, QGIS. Altitude mode: clampToGround.
Hvem bruger KML-kort
Sådan eksporterer du KML
Sådan åbner du filen efter eksporten
- Google Earth Pro (free) — File → Open, pick the .kml; on the left the layers will show as folders that can be switched on and off.
- Google My Maps — create a map, choose Import and upload the file: you get a web map with a link to share.
- QGIS (free) — Layer → Add Vector Layer; KML is read by the driver that ships with GDAL, and from there the data converts to a shapefile or GeoPackage.
- ArcGIS Pro — the KML To Layer tool turns the file into a geodata layer.
- Checking the volume — tilt the view in Google Earth: the buildings will appear as solid boxes above the surface.
Populære kort i KML
Få korteksport i KML (Keyhole Markup Language)
Download professionelle KML-kort fra OpenStreetMap. Øjeblikkelig generering, ethvert område.
Ofte stillede spørgsmål
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