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Quick and Dirty Thematic Mapmaking for Everyone

A thematic map (wiki link) is a map that illustrates a particular theme.  Most of the "informative" maps we see are thematic maps: weather maps, maps of political results, maps of bicycle paths, etc.

example of a choroplethIn this article, we'll take a step-by-step look at how to make a thematic map  - a choropleth - using free source graphics and free software.

GPS to Google Earth: Data Collection Walkthrough

Sometimes you get tired of "armchair mapping" -- working exclusively with digital tools from the comfort of your home or office.  Sometimes you want to go ride bikes through the Yosemite Valley, marveling at the waterfalls and cliff faces and rushing rivers.  Sometimes your friend Alan gets a new Garmin Oregon 400t handheld GPS unit and you want to go play with it.  Sometimes all three of these things happen on the same day PLUS it's your birthday so you can totally feel justified to take the day off to go do it as long as you blog about it later!