I would like to get an array of the height values from the ahn3 or ahn2.
Yes.
Using the Web Coverage Service (WCS).
Example:
https://geodata.nationaalgeoregister.nl/ahn2/wcs?service=WCS&version=2.0.1&request=GetCoverage&coverageId=ahn2_05m_int&format=GEOTIFF_FLOAT32&subset=x(202752%2C204800)&subset=y(497664%2C499712)&subsettingCrs=http://www.opengis.net/def/crs/EPSG/0/28992&scalesize=x(2049),y(2049)&compression=NONE
The result is a geotif you can load in to QGIS.
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Hi David, thank you for your reply, why is the geotiff not being displayed in the browser like the wms images? Is it because geotiff is not supported by webbrowsers? Because I would prefer to have the data directly instead of having to load files from my program… Ideally I would like a string format like the bag wfs services. Is it something that I can do in the WCS request URL?
Thank you!
Geotiff is just a tiff with some extra attributes.
Browsers don’t support TIFF in general.
As far as I know, no, the geotiff format is the only way to get the actual height values.
I use libtiff to read the pixel values.
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Thank you for your reply! that’s useful information, I will look deeper into the geotiff.
Kan dit ook met wcs gdal XML bestand worden gerealiseerd?