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I trying to integrate pgrouting 2.x. I am now using pgrouting 1.x. In version 1 I used assign_vertex_id. It already dropped in version 2 and became pgr_createTopology function

SELECT pgr_createTopology('roads_r', 0.00001, 'the_geom', 'gid')

It returning query result OK but its not populating source and target field of my road data. Is there any bug in this function?

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This is hard to tell because I can't reproduce your problem without some sample data. Would it be possible for you to send a small sample data set to the developer mailing list? http://lists.osgeo.org/mailman/listinfo/pgrouting-dev

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