Geographic Information Systems Asked on December 18, 2020
If I load a WMS service into QGIS I could query with the selection tool for every pixel the altitude value. Where does QGIS get this altitude value from? A WMS does not normally have any altitude values.
How could I export this as a pointcloud/mesh/grid? Actually if I export the wms, the altitude is everywhere zero, but as described above QGIS has the altitude so I want use it.
QGIS use an WMS OGC standard called GetFeatureInfo to get feature info values from the WMS. If you in a newer QGIS turn on the Debugging/Development Tools Panel and start logging you can see the request sent to the WMS server. If you copy the GET URL and run it in a browser you will download a QML file with the info as GML. You cannot get the entire map only point info. Many providers also make their WMS available as download but I don't if this is possibly from Geodatenzentrum.
Answered by Jakob on December 18, 2020
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