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19/05/15
FME World Tour 2015
● L'apport de FME pour la gestion de données
de transport
2/12
Ellipso Facto en quelques mots
● Structure créée en 2014
● Partenariat avec Veremes
● Prestation de service autour
de...
3/12
Open Data - Transport
● Vélo à la demande
● Open Street Map
● Transports en commun
– GTFS
4/12
Format GTFS
● General Transit Feed Specification
● Ensemble de fichiers textes (CSV)
5/12
Modèle de données GTFS
routesagency trips calendar
stop_timesstopstransfers
trip_id, arrival_time, departure_time, st...
6/12
Lecture dans FME
● Reader « classique »
– Lecture directe des fichiers CSV
– Format personnalisé
● Problème de perfor...
7/12
Principe du traitement
GTFS
BD
pgRouting
itinéraires
8/12
Chargement en base de données
9/12
Calcul de plus court chemin
10/12
Calcul d'isochrones
11/12
Perspectives
● Transformer en service / client Web
● Vérifier performances sur réseau complet
● Vérifier performance...
12/12
Des questions ?
● Merci de votre attention
● Exemples sur www.ellipsofacto.com
● frederic.eichelbrenner@ellipsofacto...
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L'apport de FME pour la gestion de données de transport

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Exemple de traitement de données de transport grâce à FME.
Import de données GTFS Open Data publiées par la RATP, construction d'une base de données "routable", calcul d'itinéraires et d'isochrones grâce à pgRouting

Publié dans : Données & analyses
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L'apport de FME pour la gestion de données de transport

  1. 1. 19/05/15 FME World Tour 2015 ● L'apport de FME pour la gestion de données de transport
  2. 2. 2/12 Ellipso Facto en quelques mots ● Structure créée en 2014 ● Partenariat avec Veremes ● Prestation de service autour de FME ● 12 ans d'expérience dans la géo-information
  3. 3. 3/12 Open Data - Transport ● Vélo à la demande ● Open Street Map ● Transports en commun – GTFS
  4. 4. 4/12 Format GTFS ● General Transit Feed Specification ● Ensemble de fichiers textes (CSV)
  5. 5. 5/12 Modèle de données GTFS routesagency trips calendar stop_timesstopstransfers trip_id, arrival_time, departure_time, stop_id, stop_sequence, stop_headsign, shape_dist_traveled
  6. 6. 6/12 Lecture dans FME ● Reader « classique » – Lecture directe des fichiers CSV – Format personnalisé ● Problème de performance sur gros fichiers – stop_times contient +11 M lignes pour RATP ● Lecture en python et stockage en BD ● A tester : format Point Cloud XYZ et outils associés
  7. 7. 7/12 Principe du traitement GTFS BD pgRouting itinéraires
  8. 8. 8/12 Chargement en base de données
  9. 9. 9/12 Calcul de plus court chemin
  10. 10. 10/12 Calcul d'isochrones
  11. 11. 11/12 Perspectives ● Transformer en service / client Web ● Vérifier performances sur réseau complet ● Vérifier performances sur offre « temporelle » ● Connecter à d'autres réseaux pour évaluer une offre multimodale – Stratégie d'intégration – Stratégie d'interfaçage
  12. 12. 12/12 Des questions ? ● Merci de votre attention ● Exemples sur www.ellipsofacto.com ● frederic.eichelbrenner@ellipsofacto.com

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