Orbit Tile Map Service file

An Orbit Tile Map Service resource connection file (*.otm) is a file reference to a Tile Map Service.
It is strongly advised to read first the documentation about Web-based Resources.

The Orbit Tile Map Service driver relies on a tile engine, a computer graphics technique which generates a larger graphic from re-using a number of smaller graphics to minimize data traffic and increase real-time rendering performance.

Tiled maps are composed of a set of scale-appropriate cartographic renderings, each divided up into regularly spaced image tiles, called Tilesets.

Generic
Custom configuration settings :

• <TileX> : The tile column index.
• <TileY> : The tile row index.
• <Level> : The zoom level (0 means top-level).
• <TileXi> : The tile column index inversed.
• <TileYi> : The tile row index inversed.

Format=Generic
MapUrl=http://tile.openstreetmap.org/<Level>/<TileX>/<TileY>.png
Levels=19

OpenStreetMap
Default configuration settings OpenStreetMap :

Format=OpenStreetMap
MapUrl=http://tile.openstreetmap.org
Levels=19

A Web Service reference file simplifies use of Web resources and enables additional configurations :

• Manage and share web resource in the same way as regular, file based resources.
• Associate an Orbit Legend file.
• Set additional service configurations, see Structure.

Create and edit the .otm file using a simple text editor (e.g. Notepad). Take care of spelling and file syntax.

The resource can be accompanied by an Orbit Legend File and Orbit Resource Descriptor.

A Tile Map Service is most likely georeferenced. The resource coordinate system must be defined via the associated .ord file, just like other regular file based resources.

The CRS for OpenStreetMap is “WGS 84 / World Mercator” EPSG 3395.
If the tile service is using another coordinate system, you can define custom georeference transformation for the top tile, using a .geo file.

Esri World Imagery
https://services.arcgisonline.com/arcgis/rest/services/World_Imagery/MapServer
esri_world_imagery.zip

Format=Generic
MapUrl=https://services.arcgisonline.com/arcgis/rest/services/World_Imagery/MapServer/tile/<Level>/<TileY>/<TileX>.jpg
Levels=23
DiskCacheName=services.arcgisonline.com.World_Imagery

PDOK BRT Achtergrondkaart
https://www.pdok.nl
pdok.zip

Format=Generic
MapUrl=http://geodata.nationaalgeoregister.nl/tiles/service/tms/1.0.0/brtachtergrondkaart/<Level>/<TileX>/<TileYi>.png
Levels=15
TileSize=256
DiskCacheName=geodata.nationaalgeoregister.nl.brtachtergrondkaart

OpenStreetmap
http://www.openstreetmap.org
openstreetmap.zip

Format=OpenStreetMap
MapUrl=http://a.tile.openstreetmap.org http://b.tile.openstreetmap.org http://c.tile.openstreetmap.org
Levels=19
DiskCacheName=openstreetmap