June 2005
Intermediate to advanced
568 pages
24h 7m
English
Content preview from Mapping Hacks
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Build a Free World Gazetteer #84
Chapter 7, Names and Places
|
421
HACK
As it happens, the exact same technique is used to make the maps explored
in “Map the Places You’ve Visited”
[Hack #3]. The result is shown in
Figure 7-5.
See Also
• “Search Local, Find Global” [Hack #35]
• “Map the Places You’ve Visited” [Hack #3]
• “Land Geist” (http://douweosinga.com/projects/landgeist) shows Google
shares for different word-country combinations using the techniques in
this hack.
—Douwe Osinga
HACK
#84
Build a Free World Gazetteer Hack #84
Build on the free GEONet data set about millions of world cities and
landmarks.
A gazetteer is “a geographical dictionary; a book giving the names and
descriptions, etc., of many places” (Webster’s). Many commercial gazetteer
services exist online. They provide an index of “interesting places” with
geospatial coordinates: an index for a world atlas.
A gazetteer service is useful in helping to extract spatial information from
text. It helps you decide where your own interesting places are near.
Figure 7-5. worldmap.gif recolored to show population growth by country
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