Understanding geographic data


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Understanding geographic data

Earlier, we used address book entries as an example of a simple data structure, but an address has actually two kinds of information. It's the numbers and letters that define it, and the actual place that it defines on a map. That second kind of locational information moves an address into an area of geographic data that's highly valuable in ways that can affect lives directly. That was the case in the 1854 cholera outbreak in London, which Edward Tufte made famous in his 1983 book, 'The Visual Display of Quantitative Information.' People throughout that city were dying, but nobody could figure out why, until Sewer engineer Edmund Cooper and later the Dr. John Snow, decided to plot the deaths on a map.

Obvious patterns became clear immediately and the cause was pinpointed to a specific water pump that the victims used. So that's the background in an understanding of how this information can be especially useful, but let's get back to Drupal. We showed some Drupa...

Understanding geographic data
Video duration: 4m 25s 6h 8m Intermediate

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Understanding geographic data provides you with in-depth training on Web. Taught by Tom Geller as part of the Drupal 6: Online Presentation of Data

Subject:
Web
Software:
Drupal
Author:
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