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Routing in der Datenbank

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Diese Präsentation gibt einen Überblick über das pgRouting Projekt und den aktuellen Entwicklungsstand. Neben den bekannten "Shortest Path" Suchalgorithmen, Einzugsbereichsermittlung oder "Travelling Salesperson Problem" (TSP) Optimierung, erhalten Sie einen Ausblick und eine Einführung in die kommenden neuen Features wie den "Vehicle Routing Problem" (VRP) Algorithmus und ähnliche Werkzeuge zur Planung und Optimierung von Touren.

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Routing in der Datenbank

  1. 1. Routing in der Datenbank TOURENPLANUNG UND MEHR Createdby /DanielKastl @dkastl
  2. 2. PGROUTING PROJECT
  3. 3. EINE ERWEITERUNG FÜR ...
  4. 4. EIN OPEN SOURCE PROJEKT, ...
  5. 5. EINE BIBLIOTHEK MIT ...
  6. 6. EINE BIBLIOTHEK MIT ... Shortest Path Algorithmen Dijkstra, A-Star, One-to-many, All-pair SP. Alternative Routen & Abbiegebeziehungen Traveling Salesperson Algorithmus Ermittlung von Einzugsbereichen Vehicle Route Problem Solver
  7. 7. ROUTING IN DER DATENBANK
  8. 8. DATENBANK ERSTELLEN pgRouting erweitert PostgreSQL/PostGIS CREATE DATABASE routing; c routing CREATE EXTENSION postgis; CREATE EXTENSION pgrouting;
  9. 9. SQL ABFRAGE SELECT * FROM pgr_dijkstra(' SELECT gid as id, source::integer, target::integer, length::float8 as cost FROM ways', 30, 60, false, false);
  10. 10. ABFRAGEERGEBNIS seq | node | edge | cost ----+------+------+--------------------- 0 | 30 | 53 | 0.0591267653820616 1 | 44 | 52 | 0.0665408320949312 2 | 14 | 15 | 0.0809556879332114 3 | 13 | 14 | 0.072694271986776 4 | 12 | 13 | 0.081239348480584 5 | 11 | 12 | 0.00746935522787469 6 | 10 | 6869 | 0.0164274192597773 7 | 59 | 72 | 0.0109385169537801 8 | 60 | -1 | 0 (9 rows)
  11. 11. Variabilität vs. Geschwindigkeit
  12. 12. VARIABLE KOSTEN
  13. 13. Quelle:http://imgs.xkcd.com/comics/goto.png EIGENE FUNKTIONEN
  14. 14. CREATE OR REPLACE FUNCTION pgr_fromAtoB( IN tbl varchar, IN x1 float, IN y1 float, IN x2 float, IN y2 float, ) RETURNS SETOF record AS $$ BEGIN FOR rec IN EXECUTE sql LOOP RETURN NEXT; END LOOP; END; $$ LANGUAGE 'plpgsql' VOLATILE STRICT;
  15. 15. TOURENPLANUNG
  16. 16. PGR_VRPONEDEPOT Vehicle Routing Problem Solver SELECT * FROM pgr_vrpOneDepot( 'SELECT * FROM vorders'::text, 'SELECT * FROM vvehicles'::text, 'SELECT * FROM vdistance'::text, 1 ); (DieFunktionbefindetsichmomentanineinerpgRoutingBranch.)
  17. 17. BEISPIELANWENDUNG
  18. 18. OPTIMIERTER FAHRPLAN demo.smartvrp.com
  19. 19. GARBAGE COLLECTION
  20. 20. KOMPLEXES OPTIMIERUNGSPROBLEM Deponien zum Entleeren der Fahrzeuge Verschiedene Fahrzeugtypen Unterschiedliche Arten von Abfall Keine U-Turns erlaubt Anfahrt auf der richtigen Strassenseite Spezielle Anforderungen
  21. 21. GSOC PROJEKTE SEIT 2010 Multimodal Routing Time-Dependent Shortest Path Graphenpartitionierung VRP mit Time Windows pgRouting sucht Sponsoren!
  22. 22. ROUTING IN DER DATENBANK Bei Interesse und weiteren Fragen: Email: Twitter: Webseite: daniel@georepublic.de @dkastl http://georepublic.info

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