[英]Tilestache - Mismatch between the coordinates present in the PostgreSQL/PostGIS and those returned by PostGeoJSON provider
这是我的Tilestache配置的相关内容,
"points-of-interest":
{
"provider":
{
"class": "TileStache.Goodies.Providers.PostGeoJSON.Provider",
"kwargs":
{
"dsn": "dbname=database user=username host=localhost",
"query": "SELECT loc_id AS __id__, loc_name, geo2 AS __geometry__ FROM location",
"id_column": "__id__", "geometry_column": "__geometry__"
}
}
},
当我访问时http://127.0.0.1:8080/points-of-interest/0/0/0.json
- http://127.0.0.1:8080/points-of-interest/0/0/0.json
- http://127.0.0.1:8080/points-of-interest/0/0/0.json
我得到回应-
{
"type": "FeatureCollection",
"features": [
{
"geometry": {
"type": "Point",
"coordinates": [
-0.0008691850758236021,
0.0002956334943026654
]
},
"type": "Feature",
"properties": {
"loc_name": "TI Blvd, TX"
},
"id": 9
}
]}
上述回应中的座标为-
"coordinates": [-0.0008691850758236021,0.0002956334943026654]
其中,db表中的实际坐标是-
database=# SELECT loc_id AS __id__, loc_name, ST_AsText(geo2) AS __geometry__ FROM location;
__id__ | loc_name | __geometry__
--------+-------------+---------------------------
9 | TI Blvd, TX | POINT(-96.75724 32.90977)
我在这里想念什么? 为什么我的GeoJSON响应坐标不同?
表说明是
Table "public.location"
Column | Type | Modifiers
----------+------------------------+-----------
loc_id | integer | not null
loc_name | character varying(70) |
geo2 | geometry(Point,900913) |
Indexes:
"location_pkey" PRIMARY KEY, btree (loc_id)
预先感谢大家的帮助。
插入带有SRID的点-4326解决了该问题。
这是插入-
INSERT INTO location(loc_id, loc_name, geo2) VALUES (3, 'Manchester, NH', ST_Transform(ST_GeomFromText('POINT(-71.46259 42.99019)',4326), 900913));
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