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XSLT implementation of the algorithm for use with KML data. You can see the algorithm applied to a GPS log from a bike ride at the bottom of this page; Interactive visualization of the algorithm; Implementation in F#; Ruby gem implementation; JTS, Java Topology Suite, contains Java implementation of many algorithms, including the Douglas ...
Keyhole Markup Language (KML) is an XML notation for expressing geographic annotation and visualization within two-dimensional maps and three-dimensional Earth browsers. KML was developed for use with Google Earth, which was originally named Keyhole Earth Viewer.
Example of KML code displayed within a browser window. If after clicking on the KML file link, a plain page full of code is displayed (see image for example): Select the entire contents of the page (Ctrl+A on Windows, ⌘ Cmd+A on Macintosh), and then copy it (Ctrl+C on Windows, ⌘ Cmd+C on Macintosh)
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The values in the table give distances in the east-west direction corresponding to a small change in longitude, at different latitudes. You can take the equator columns of the table as a rough guide to distances in the north-south direction that correspond to a small change in latitude, since they vary only a little bit at different latitudes.
The Geospatial Data Abstraction Library (GDAL) is a computer software library for reading and writing raster and vector geospatial data formats (e.g. shapefile), and is released under the permissive X/MIT style free software license by the Open Source Geospatial Foundation.
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KML, made popular by Google, complements GML. Whereas GML is a language to encode geographic content for any application, by describing a spectrum of application objects and their properties (e.g. bridges, roads, buoys, vehicles etc.), KML is a language for the visualization of geographic information tailored for Google Earth. KML can be used ...