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- import psycopg2
- from shapely.geometry import LineString
- from shapely import wkb
- conn = psycopg2.connect('...')
- curs = conn.cursor()
- # Make a Shapely geometry
- ls = LineString([(2.2, 4.4, 10.2), (3.3, 5.5, 8.4)])
- ls.wkt # LINESTRING Z (2.2 4.4 10.2, 3.3 5.5 8.4)
- ls.wkb_hex # 0102000080020000009A999999999901409A999999999911406666666666662440666666...
- # Send it to PostGIS
- curs.execute('CREATE TEMP TABLE my_lines(geom geometry, name text)')
- curs.execute(
- 'INSERT INTO my_lines(geom, name)'
- 'VALUES (ST_SetSRID(%(geom)s::geometry, %(srid)s), %(name)s)',
- {'geom': ls.wkb_hex, 'srid': 4326, 'name': 'First Line'})
- conn.commit() # save data
- # Fetch the data from PostGIS, reading hex-encoded WKB into a Shapely geometry
- curs.execute('SELECT name, geom FROM my_lines')
- for name, geom_wkb in curs:
- geom = wkb.loads(geom_wkb, hex=True)
- print('{0}: {1}'.format(name, geom.wkt))
- # First Line: LINESTRING Z (2.2 4.4 10.2, 3.3 5.5 8.4)
- >>> import psycopg2
- >>> conn = psycopg2.connect(dbname=..., port=..., user=...,
- password=..., host=...)
- >>> cur = conn.cursor()
- >>> x, y, z, = 32, 34, 0
- >>> cur.execute("SELECT ST_SetSRID(ST_MakePoint(%s, %s, %s),4326);", (x, y, z))
- >>> cur.fetchall()
- [('01010000A0E6100000000000000000404000000000000041400000000000000000',)]
- >>> cur.execute("SELECT ST_AsText(ST_SetSRID(ST_MakePoint(%s, %s, %s),4326));", (x, y, z))
- >>> cur.fetchall()
- [('POINT Z (32 34 0)',)]
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