Thursday, 10 May 2018

data - Seeking public Web Map Tiling Service (WMTS)?



Does anyone know of an "almost always available" service URL for a public facing Web Map Tiling Service (WMTS)?


I'm keen to test WMTS client capabilities without having to configure a WMTS server.



Answer







Take a look at:





Those looking to test their web map applications against an Esri REST WMTS, please use USGS The National Map basemap services, which are published using ArcGIS Server 10.2:


http://basemap.nationalmap.gov/arcgis/rest/services


Click on any of the services in this directory and you will see a 'WMTS' link in the upper left corner which points towards the getcapabilities file for that service.


An example Tile request from the 'USGSShadedReliefonly' map service: http://basemap.nationalmap.gov/arcgis/rest/services/USGSShadedReliefOnly/MapServer/WMTS/tile/1.0.0/USGSShadedReliefOnly/default/default028mm/4/7/4.jpg




You can find a public APOLLO imagery WMTS available here. You can consider this an "always on" service



The service is compliant to the OGC Team engine test suite but note;



  1. The image tiles returned are generated on the fly with no server-side caching. The server is located in Atlanta, GA

  2. To improve performance of web clients, the server can be aliased against iws.erdas.com, iws2.erdas.com and iws3.erdas.com to workaround concurrency limits

  3. it does not implement some of the optional components such as the REST interface (KVP only) or feature info

  4. ESRI ArcGIS for Desktop 10.1 has a major bug in its WMTS client implementation that will mean no tiles will drawn with the service. This is a bug with ESRI and the way it issues KVP requests, specifically the format param


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