Standardized
Request Messages
•HTTP GET: parameters
appended to base URL
–SERVICE=WMS&REQUEST=GetCapabilities
–SERVICE=WMS&REQUEST=GetMap&
LAYERS=layers&
STYLES=styles&
FORMAT=format&
SRS=coordinate_system&
BBOX=bounding_box&
WIDTH=width&
HEIGHT=height
LAYERS=layers&
STYLES=styles&
FORMAT=format&
SRS=coordinate_system&
BBOX=bounding_box&
WIDTH=width&
HEIGHT=height
Þ Map "Client" can simply be a web
page!
•HTTP POST: Request is
encoded as XML document
map
size
& location
& location
technical
interoperability
interoperability