Time for action – retrieving raster data

We will use WCS to get raster data, using the sample data shipped with GeoServer. In case you disabled it, as we did in Chapter 11, Tuning GeoServer in a Production Environment, you will need to enable the WCS in GeoServer. Like WFS examples, we will use cUrl for sending requests:

1. The first operation we will use is GetCapabilities. As with WFS, it returns a list of available featuretype and operations:

   ~$ curl -XGET "http://localhost/geoserver/wcs?service=wcs&version=1.0.0&request=GetCapabilities" -o getCapabilities.xml

2. The following lines show you the brief description for a coverage, extracted from the list returned:

   <wcs:CoverageOfferingBrief>
       <wcs:description>A very rough imagery of North America</wcs:description>
       <wcs:name>nurc:Img_Sample</wcs:name>
       <wcs:label>North America sample imagery</wcs:label>
       <wcs:lonLatEnvelope srsName="urn:ogc:def:crs:OGC:1.3:CRS84">
           <gml...