I'm developing an application that needs routing information for certain cities. First, I downloaded a openstreetmap datafile (*.osm) and then I imported it into a postgreSQL database using osm2pgrouting tool (http://workshop.pgrouting.org/chapters/installation.html). After this, I have the following tables:
- nodes: that contains simple locations points
- ways: that contains ways with some nodes involved
- vertices_tmp: stores nodes that may be used for pgrouting funtcions like Djistra, A*...etc.
Would I use nodes that isn't in "vertices_tmp" table for calculate distances between nodes? Or I would only do it with the nodes stored in "vertices_tmp"?
Into ways table there are a field named "the_geom" that encapsulates different locations points (nodes). For example:
"MULTILINESTRING((1.5897786 42.5600441,1.5898376 42.5601455,1.589992 42.5605438,1.590095 42.5606795,1.5901782 42.5608026,1.5902238 42.561018,1.5902912 42.5616808,1.5903685 42.561899,1.5904008 42.5620563,1.5903836 42.5624117,1.5904265 42.5627151,1.5904947 42.5628368,1.5905981 42.5629553,1.5906926 42.5631007,1.590802 42.5633238,1.5908604 42.5634883,1.5909501 42.5637139,1.5910869 42.5638755,1.5913053 42.5639639,1.5914994 42.5640237,1.591648 42.5640261,1.5919232 42.5640145,1.5921124 42.5640363,1.5923292 42.5640953,1.592804 42.5643306))"
Can I route with intermediate nodes or only with source/target nodes?
My goal is to be able to routing betweent differents nodes or POIs, depending of its amenity tags, not only driving distance, walking distance too. Furthermore I need to calculate shortest path for source/targets nodes.
Any idea for do this?
Thanks in advance!