June 2005
Intermediate to advanced
568 pages
24h 7m
English
Content preview from Mapping Hacks
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Extract a Spatial Model from Wikipedia #45
Chapter 4, Mapping (on) the Web
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199
HACK
The Colors option allows you to specify two colors as RGB values: the first
color is the lowest in the range, and the second color is the highest. The two
colors are both shaded to white.
The results of running this script are illustrated in Figure 4-16.
You don’t have to be a GIS geek to make your own political maps (though
you probably still have to be a spreadsheet geek). Hopefully, once you’re
done with this book, it’ll be a no-brainer.
HACK
#45
Extract a Spatial Model from Wikipedia Hack #45
The Wiki encyclopedia covers the world; mine its data structure for use in
mapping applications.
Wikipedia is the fantastic publicly editable online world encyclopedia.
Maintained by casual online volunteers, many who are experts in their
fields, it aims for a “neutral point of view” in recounting world knowledge,
history, places, and political systems. This hack discusses the English Wiki-
pedia (http://en.wikipedia.org/), but the principle will work with any of their
many language editions, featuring mostly original articles.
“Wiki nature” allows anyone on the Web to edit each page; it also allows
anyone to create links between pages using a simple markup, which encloses
Figure 4-16. Map showing voter turnout in San Francisco (note the central “progressive
crescent” of political engagement)
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
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.