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I need to add routing functionality in my application how to add the routing in openlayers.

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closed as unclear what you're asking by underdark May 7 at 9:10

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Do mean by your own database or using web routing API? –  Mapperz Nov 2 '12 at 13:21
    
Openlayers is just the 'canvas' - Datamodelling, processing has to be done elsewhere... –  Styp Nov 5 '12 at 14:48
    
Welcome to GIS SE :) Please do improve your accept rate by accepting answers to your previous questions. –  R.K. Nov 8 '12 at 3:17

2 Answers 2

There's an introduction to using pgRouting with OpenLayers here: http://pgrouting.org/docs/foss4g2007/index.html

For further information you may also wish to see this question and answer: http://stackoverflow.com/questions/6794996/openstreetmap-data-with-openlayers-vs-google-maps

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You can use PostGis database with pgRouting library. Here is a nice tutorial for beginers on how to use pgRouting: http://underdark.wordpress.com/2011/02/07/a-beginners-guide-to-pgrouting/

Here you have some more detailed information on how pgRouting functions work, it might be helpfull: http://www.davidgis.fr/documentation/pgrouting-1.02/

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