Using WCS
A Web Coverage Service (WCS) differs greatly in use case from the other services, but it behaves very similarly. The goal of WCS is to allow users to extract a region of interest from a large raster data that is hosted remotely. Unlike a WMS or Tiled set, WCS is a clip of the original data in full resolution and usually in the original projection. This format is ideal if you need the raster data for analysis purposes and not just visualization.
Getting ready
For this recipe, you need a WCS to connect to. Check with your data providers to see whether they offer WCS. For this recipe, we can use the OpenGeo Geoserver Demo site at http://demo.opengeo.org/geoserver/web/.
How to do it…
Open a web browser and go to http://demo.opengeo.org/geoserver/web/.
On the right-hand side, you'll see a list of web services that are available; right-click on WCS 1.1.1 and copy the link.
In QGIS, open the WCS dialog.
Select New to create a new server entry.
In the boxes, perform the following:
Provide a name...
