AHN data

[dpwoert]

We need to improve reading speeds for AHN data. Found this so far:

• http://geodata.nationaalgeoregister.nl/ahn1/wcs?
• http://nl.wikipedia.org/wiki/Web_Coverage_Service
• http://nationaalgeoregister.nl/geonetwork/srv/dut/search#|f20e948e-9e22-4b5a-96a1-f3cc1d16b808
• http://en.wikipedia.org/wiki/Geographic_information_system

Therefore we probably need to support data from GIS sources, can you find out how GIS works @Hedva ?