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Chapter 8, Building the Geospatial Web
#90 Crawl the Geospatial Web with RedSpider
HACK
HACK
#90
Crawl the Geospatial Web with RedSpider Hack #90
RedSpider provides a web-based client to view Web Map Service and Web
Feature Service layers—good for testing and instant gratification!
Perhaps, after reading this far, you’ve decided to take the plunge into the
Open Geospatial Consortium web mapping standards to share your map
data and let others build on your applications. “Publish Your Geodata to the
Web with GeoServer”
[Hack #89] shows how to set up GeoServer, the OGC
equivalent of the Apache web server, to publish from your existing geo-
graphic data sources, such as a PostGIS spatial database or an existing
ArcInfo resource.
Now that you’ve published your spatial data, you want instant gratification.
This is where RedSpider comes in. RedSpider (http://redspider.us/viewer/)is
a Web Map Service and Web Feature Service client that works in a web
browser. It’s not open source, but it’s free to use and is the nicest closed-
source viewer available on the Web.
RedSpider comes preloaded with a large set of layers that represent mostly
U.S.-derived global maps. There are weather reports, city names, and coun-
try outlines among the default features. However, if you just want to use
RedSpider to view your own WFS/WMS published data, you probably want
to turn most of these layers off. Figure 8-7 shows the