GeodeticCalculator ------------------ The GeodeticCalculator is used to perform calculations on the Geoid (i.e. on the surface of the world). .. image:: /images/geodetic_calculator.PNG You can configure your GeodeticCalculator to work with a specific Ellipsoid (or commonly from an CoordinateReferenceSystem) and then use it to perform a number References: * http://udig.github.io/docs/dev/tool_plugin_tutorial.html Distance ^^^^^^^^ * Distance between two points .. literalinclude:: /../src/main/java/org/geotools/referencing/ReferencingExamples.java :language: java :start-after: // distance start :end-before: // distance end Although the above shows quickly creating a Position from a JTS Coordinate; you can use the GeodedicCalculator with any two positions, internally it will transform the points as needed. * You can also generate the angle between the two points Continuing on from the previous example: .. literalinclude:: /../src/main/java/org/geotools/referencing/ReferencingExamples.java :language: java :start-after: // angle start :end-before: // angle end * Generate location away from a point Finally you can turn the tables and use the GeodeticCalculator to generate a point a set direction and distance away from your starting point. .. literalinclude:: /../src/main/java/org/geotools/referencing/ReferencingExamples.java :language: java :start-after: // movePoint start :end-before: // movePoint end