June 2005
Intermediate to advanced
568 pages
24h 7m
English
Content preview from Mapping Hacks
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Chapter 9, Mapping with Other People
#95 Model Interactive Spaces
HACK
patterns between, say English factory and French usine, but also to align dif-
ferent spatial ontologies where their contents represent similar but quite dif-
ferent things: a French canton, an English borough, a U.S. county.
Naming Spaces
The RDF model, shorthand for the unevocative Resource Description
Framework, is an ideal candidate for storing interactive models of space.
Like the route-oriented or connection-oriented model of space, it represents
a graph of nodes with lines or arcs connecting them. RDF’s companion stan-
dard, OWL—the Web Ontology Language—allows you to describe a taxon-
omy and publish it on the Web for others to use.
In the RDF model, as shown in Figure 9-6, each node and arc is labeled with
an HTTP URL, just like an ordinary web address, except there doesn’t have
to be anything on the other end of the address: it just has to be unique and
always refer to the same thing.
Figure 9-5. Map of a small portion of the Discworld MUD (http://maps.discworld.nu/
maps/aam.gif)
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.