Online shapefile generalizator: MapShaper
It is a free online web-based editor for shapefiles, for generating polygons and polylines. You just simply run the editor in your browser, that has a flash.
Mapshaper supports three line simplification algorithms. The most common Douglas-Peucker, Visvalingam-Whyatt, and a custom algorithm designed to smooth convoluted coastlines and spiky features.The Douglas-Peucker algorythm is used for line simplification in ArcGIS as well.
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