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routing second shot

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This commit is contained in:
MaelReboux 2019-03-28 18:53:10 +01:00
parent 0e7b42ea05
commit 6672f3c408
5 changed files with 147 additions and 9 deletions
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70
scripts/create_osm_roads.sh Executable file
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@ -0,0 +1,70 @@
#!/bin/sh
# 1. export du tracé depuis la base redadeg
pg_dump --file data/redadeg_trace.sql --host localhost --username redadeg --no-password --format=p --no-owner --section=pre-data --section=data --no-privileges --no-tablespaces --no-unlogged-table-data --no-comments --table public.phase_1_trace redadeg
# 2. import dans la base OSM
psql -U osmbr -d osm -c "DROP TABLE public.phase_1_trace;"
psql -U osmbr -d osm < data/redadeg_trace.sql
# 3. calcul de la couche osm_roads = intersection buffer trace et routes OSM
psql -U osmbr -d osm -c "TRUNCATE TABLE osm_roads ;"
psql -U osmbr -d osm -c "WITH trace_buffer AS (
SELECT
secteur_id,
ST_Union(ST_Buffer(the_geom, 25, 'quad_segs=2')) AS the_geom
FROM phase_1_trace
GROUP BY secteur_id
ORDER BY secteur_id
)
INSERT INTO osm_roads
(
SELECT
row_number() over() as id,
osm_id,
highway,
CASE
WHEN highway IN ('motorway', 'trunk') THEN 'motorway'
WHEN highway IN ('primary', 'secondary') THEN 'mainroad'
WHEN highway IN ('motorway_link', 'trunk_link', 'primary_link', 'secondary_link', 'tertiary', 'tertiary_link', 'residential', 'unclassified', 'road', 'living_street') THEN 'minorroad'
WHEN highway IN ('service', 'track') THEN 'service'
WHEN highway IN ('path', 'cycleway', 'footway', 'pedestrian', 'steps', 'bridleway') THEN 'noauto'
ELSE 'other'
END AS type,
oneway,
ref,
name AS name_fr,
COALESCE(tags -> 'name:br'::text) as name_br,
ST_Intersection(ST_Transform(o.way,2154), t.the_geom) AS the_geom
FROM planet_osm_line o, trace_buffer t
WHERE highway IS NOT NULL AND ST_INTERSECTS(t.the_geom, ST_Transform(o.way,2154))
) ;"
# 4. export de osm_roads depuis la base OSM
pg_dump --file data/osm_roads.sql --host localhost --username osmbr --no-password --format=p --no-owner --section=pre-data --section=data --no-privileges --no-tablespaces --no-unlogged-table-data --no-comments --table public.osm_roads osm
# 5. import dans la base redadeg
psql -U redadeg -d redadeg -c "DROP TABLE public.phase_1_trace;"
psql -U redadeg -d redadeg < data/redadeg_trace.sql
psql -U redadeg -d redadeg -c "TRUNCATE TABLE public.osm_roads;"
psql -U redadeg -d redadeg < data/osm_roads.sql
echo "fini"

2
scripts/create_osm_roads.sql
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@ -22,6 +22,7 @@
-- pg_dump --file redadeg_trace.sql --host localhost --username redadeg --no-password --format=p --no-owner --section=pre-data --section=data --no-privileges --no-tablespaces --no-unlogged-table-data --no-comments --table public.phase_1_trace redadeg
-- import dans la base osm
-- psql -U osmbr -d osm -c "DROP TABLE public.phase_1_trace;"
-- psql -U osmbr -d osm < redadeg_trace.sql
@ -92,6 +93,7 @@ INSERT INTO osm_roads
-- pg_dump --file osm_roads.sql --host localhost --username osmbr --no-password --format=p --no-owner --section=pre-data --section=data --no-privileges --no-tablespaces --no-unlogged-table-data --no-comments --table public.osm_roads osm
-- commande d'import
-- psql -U redadeg -d redadeg -c "DROP TABLE public.osm_roads;"
-- psql -U redadeg -d redadeg < osm_roads.sql

2
scripts/create_tables.sql
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@ -200,6 +200,8 @@ CREATE TABLE osm_roads_pgr
name_br text,
source bigint,
target bigint,
cost double precision,
reverse_cost double precision,
the_geom geometry,
CONSTRAINT osm_roads_pgr_pkey PRIMARY KEY (id),
CONSTRAINT enforce_geotype_the_geom CHECK (geometrytype(the_geom) = 'LINESTRING'::text OR geometrytype(the_geom) = 'MULTILINESTRING'::text),

49
scripts/routing.sql
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@ -30,6 +30,19 @@ SELECT topology.AddTopoGeometryColumn('osm_roads_topo', 'public', 'osm_roads', '
-- le 2e chiffre est la tolérance en mètres
UPDATE osm_roads SET topo_geom = topology.toTopoGeom(the_geom, 'osm_roads_topo', 1, 0.01);
/*
DO $$DECLARE r record;
BEGIN
FOR r IN SELECT * FROM osm_roads LOOP
BEGIN
UPDATE osm_roads SET topo_geom = topology.toTopoGeom(the_geom, 'osm_roads_topo', 1, 0.01);
EXCEPTION
WHEN OTHERS THEN
RAISE WARNING 'Loading of record % failed: %', r.id, SQLERRM;
END;
END LOOP;
END$$;
*/
-- à ce stade on a un graphe topolgique dans le schema osm_roads_topo
@ -37,7 +50,7 @@ UPDATE osm_roads SET topo_geom = topology.toTopoGeom(the_geom, 'osm_roads_topo',
-- 4. remplissage de la couche routable depuis la couche d'origine et la topologie
INSERT INTO osm_roads_pgr
( SELECT
e.edge_id as id,
row_number() over() as id,
o.osm_id,
o.highway,
o.type,
@ -45,8 +58,10 @@ INSERT INTO osm_roads_pgr
o.ref,
o.name_fr,
o.name_br,
o.source,
o.target,
NULL as source,
NULL as target,
NULL as cost,
NULL as reverse_cost,
e.geom as the_geom
FROM osm_roads_topo.edge e,
osm_roads_topo.relation rel,
@ -55,6 +70,10 @@ WHERE e.edge_id = rel.element_id
AND rel.topogeo_id = (o.topo_geom).id
);
-- calcul des 2 attributs de coût (= longueur)
UPDATE osm_roads_pgr SET cost = st_length(the_geom);
UPDATE osm_roads_pgr SET reverse_cost = st_length(the_geom);
-- 5. calcul du graphe routier par pgRouting
SELECT pgr_createTopology('osm_roads_pgr', 1.0);
@ -67,10 +86,30 @@ SELECT pgr_nodeNetwork('osm_roads_pgr', 1.0);
-- il ne reste plus qu'à faire des calculs d'itinéraires
-- test de calcul de plus court chemin
SELECT * FROM pgr_dijkstra(
'SELECT id, source, target, st_length(the_geom) as cost FROM osm_roads_pgr',
6, 1
'SELECT id, source, target, cost, reverse_cost FROM osm_roads_pgr',
12872, 12810
);
-- avec la géométrie
SELECT
a.seq AS id,
a.path_seq,
a.node,
a.cost,
a.agg_cost,
b.osm_id,
b.highway,
b.ref,
b.name_fr,
b.name_br,
b.the_geom
FROM pgr_dijkstra(
'SELECT id, source, target, cost, reverse_cost FROM osm_roads_pgr',
12872, 12145) as a
JOIN osm_roads_pgr b
ON a.edge = b.id
-- si besoin : nettoyage par Drop du schéma

33
scripts/traitements_phase_2.sql
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@ -20,9 +20,9 @@ SELECT topology.AddTopoGeometryColumn('osm_roads_topo', 'public', 'osm_roads', '
-- en remplissant le nouvel attribut géométrique
-- le 1er chiffre est l'identifiant du layer dans la table topology.layer
-- le 2e chiffre est la tolérance en mètres
UPDATE osm_roads SET topo_geom = topology.toTopoGeom(the_geom, 'osm_roads_topo', 1, 1.0);
-- 18 min
UPDATE osm_roads SET topo_geom = topology.toTopoGeom(the_geom, 'osm_roads_topo', 1, 0.00001);
-- 1.0 = 18 min
-- 0.00001 = 18 min
-- à ce stade on a un graphe topologique dans le schema osm_roads_topo
@ -30,9 +30,11 @@ UPDATE osm_roads SET topo_geom = topology.toTopoGeom(the_geom, 'osm_roads_topo',
-- 4. remplissage de la couche routable depuis la couche d'origine et la topologie
-- on commence par vider avant de remplir
TRUNCATE TABLE osm_roads_pgr ;
--TRUNCATE TABLE osm_roads_pgr_noded ;
TRUNCATE TABLE osm_roads_pgr_vertices_pgr ;
-- reset des séquences
ALTER SEQUENCE osm_roads_pgr_vertices_pgr_id_seq RESTART WITH 1;
ALTER SEQUENCE osm_roads_pgr_noded_id_seq RESTART WITH 1;
--ALTER SEQUENCE osm_roads_pgr_noded_id_seq RESTART WITH 1;
INSERT INTO osm_roads_pgr
( SELECT
@ -46,6 +48,8 @@ INSERT INTO osm_roads_pgr
o.name_br,
NULL as source,
NULL as target,
NULL as cost,
NULL as reverse_cost,
e.geom as the_geom
FROM osm_roads_topo.edge e,
osm_roads_topo.relation rel,
@ -54,6 +58,10 @@ WHERE e.edge_id = rel.element_id
AND rel.topogeo_id = (o.topo_geom).id
);
-- calcul des 2 attributs de coût (= longueur)
UPDATE osm_roads_pgr SET cost = st_length(the_geom);
UPDATE osm_roads_pgr SET reverse_cost = st_length(the_geom);
-- 5. calcul du graphe routier par pgRouting
SELECT pgr_createTopology('osm_roads_pgr', 1.0);
@ -66,6 +74,23 @@ SELECT pgr_nodeNetwork('osm_roads_pgr', 1.0);
-- il ne reste plus qu'à faire des calculs d'itinéraires
SELECT
a.seq AS id,
a.path_seq,
a.node,
a.cost,
a.agg_cost,
b.osm_id,
b.highway,
b.ref,
b.name_fr,
b.name_br,
b.the_geom
FROM pgr_dijkstra(
'SELECT id, source, target, cost, reverse_cost FROM osm_roads_pgr',
12872, 12145) as a
JOIN osm_roads_pgr b
ON a.edge = b.id