I am trying to extract geological information from the onegeology portal unfortunaley most of the data there only consists of WMS data.
For example, is it feasible to extract a particular legend class from http://services.azgs.az.gov/arcgis/services/OneGeology/AZGS_USGIN_Geology/MapServer/WMSServer
into a vector form? Or is the best that I can do is to use GDAL to translate the image into a geospatially referenced image?
Note -- OneGeologyPortal does allow for one to save the wms into kml/wmc but I am unable to open either in a GIS program(ArcGIS/QGis). Google Earth opens the file but the image resolution is severely deteriorated.