OGC Data Layering

This is an example of using OGC-style spatial data requests to render distributed spatial data on the fly to the client. Below are four layers from three different spatial map servers. The baselayer is GTOPO30 elevation data served from FGDC's OGC Web Mapping Service. The boundary and points layers are locally accessed through an OGC architecture. Finally, the lat/long graticule and airport location layers are served from the Cubewerx Cascading Map Server. The use of Cascading Style Sheets, along with image transparency, enables a layered output Map Image.

Figure 2: The Cascade
[Cascading Output Image]
[Layering Concept]
Figure 1: Layering Concept