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pgRouting Wrapper for point to point dijkstra shortest path routing #4

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63 changes: 63 additions & 0 deletions functions-v2.0/README.md
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point_to_point_routing
======================

This repository have library for point to point routing.


Prerequisites
-------------

1. Install PostgreSQL - version 9.1

2. Install PostGIS - version 1.5

3. Install Pgrouting - version 1.05


Installation
-------------
Start pgAdmin and create a new database based on your PostGIS template. Open a Query dialog, load and execute the

sql file available here.


Attributes Requirement in the routable table are as below:
-----------------------------------------------------------
1. start_id

2. end_id

3. the_geom

4. osm_name

5. speed_in_kmh

6. length

7. reverse_length

8. row_flag (default value ‘false’)




Function for point to point routing:
------------------------------------
point_to_point_shortest_path(source_point_geom varchar, target_point_geom varchar, tbl varchar, distance double precision, directed boolean, has_reverse_cost boolean) )

SQL Query to get the point to point routing
-------------------------------------------
SELECT * from point_to_point_shortest_path('source_point_geometry_in_text_format','target_point_geometry_in_text_format','road_networks',#{0.003},false, false)"












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