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I want to understand simplification methods in GIS. I searched the Internet and found that the best simplification method is the Douglas-Peucker algorithm. I could not find any information about the algorithm and how the algorithm works. Is there a resource detailing the methodology behind the algorithm?

BBG_GIS
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    A brief but complete and accurate description appears at http://gis.stackexchange.com/a/11915. It contains links to references. – whuber Jul 20 '14 at 19:21

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I found a Wikipedia article entitled Ramer-Peucker-Algorithm which looks like a good starting point because it describes some pseudocode as well as links to take you into its full complexity.

PolyGeo
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