def dumps(ob, hex=False, srid=None, **kw):
"""Dump a WKB representation of a geometry to a byte string, or a
hex-encoded string if ``hex=True``.
Parameters
----------
ob : geometry
The geometry to export to well-known binary (WKB) representation
hex : bool
If true, export the WKB as a hexidecimal string. The default is to
return a binary string/bytes object.
srid : int
Spatial reference system ID to include in the output. The default value
means no SRID is included.
**kw : kwargs
See available keyword output settings in ``shapely.geos.WKBWriter``."""
if srid is not None:
# clone the object and set the SRID before dumping
geom = lgeos.GEOSGeom_clone(ob._geom)
lgeos.GEOSSetSRID(geom, srid)
ob = geom_factory(geom)
kw["include_srid"] = True
writer = WKBWriter(lgeos, **kw)
if hex:
return writer.write_hex(ob)
else:
return writer.write(ob)
def dumps(ob, hex=False, srid=None, **kw):
"""Dump a WKB representation of a geometry to a byte string, or a
hex-encoded string if ``hex=True``.
Parameters
----------
ob : geometry
The geometry to export to well-known binary (WKB) representation
hex : bool
If true, export the WKB as a hexidecimal string. The default is to
return a binary string/bytes object.
srid : int
Spatial reference system ID to include in the output. The default value
means no SRID is included.
**kw : kwargs
See available keyword output settings in ``shapely.geos.WKBWriter``."""
if srid is not None:
# clone the object and set the SRID before dumping
geom = lgeos.GEOSGeom_clone(ob._geom)
lgeos.GEOSSetSRID(geom, srid)
ob = geom_factory(geom)
kw["include_srid"] = True
writer = WKBWriter(lgeos, **kw)
if hex:
return writer.write_hex(ob)
else:
return writer.write(ob)
def _to_wkb():
# Create a closure that:
# - Adds a not-null check. This allows the returned function to
# be used directly with apply, unlike `shapely.wkb.dumps`.
# - Avoid extra work done by `shapely.wkb.dumps` that we don't need.
# - Caches the WKBWriter (and write method lookup :) )
# - Avoids adding WKBWriter, lgeos, and notnull to the module namespace.
from shapely.geos import WKBWriter, lgeos
write = WKBWriter(lgeos).write
notnull = pandas.notnull
def _to_wkb(v):
return write(v) if notnull(v) else v
return _to_wkb
def wkb_hex(self):
"""WKB hex representation of the geometry"""
return WKBWriter(lgeos).write_hex(self)
def wkb(self):
"""WKB representation of the geometry"""
return WKBWriter(lgeos).write(self)