wiki:RHT

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RHT Réseau Hydrographique Théorique

http://www.cemagref.fr/le-cemagref/lorganisation/les-centres/lyon/ur-maly/laboratoire-dynamiques-indicateurs-et-modeles-en-ecohydrologie/logiciels/RHT

Description RHT

Integrating data into postgre (rht.shp and Attributs_RHT_fev_2011.txt)

Download and load RHT

select count(*) from rht.rht ---114601 lignes
select count(*) from rht.attributs_rht_fev_2011 ---114600 lignes  --nb de lignes différent !! A voir

Integrating the topology into Postgre

Download and load RHT topology

Create a view

ALTER TABLE rht.attributs_rht_fev_2011 RENAME COLUMN id_drain TO id_drainattr;
CREATE VIEW rht.rht_attribut AS SELECT * from rht.rht r left join rht.attributs_rht_fev_2011 a on r.id_drain=a.id_drainattr

select * from rht.rht_attribut where id_drainattr is null  --un id_drain sans attribut (correspond au lac léman)