def features(self, query):
'''
'''
logging.debug('Rendering %s' % str(query.bbox))
tiles = list_tiles(query, self.zoom_adjust)
features = []
seen = set()
for (wkb, props) in load_features(8, self.host, self.port, self.path, tiles):
if not self.clipped:
# not clipped means get rid of inevitable dupes
key = (wkb, tuple(sorted(props.items())))
if key in seen:
continue
seen.add(key)
features.append((wkb, utf8_keys(props)))
if self.sort:
logging.debug('Sorting by %s %s' % (self.sort, 'descending' if self.reverse else 'ascending'))
key_func = lambda wkb_props: wkb_props[1].get(self.sort, None)
features.sort(reverse=self.reverse, key=key_func)
if len(features) == 0:
return PythonDatasource.wkb_features(keys=[], features=[])
# build a set of shared keys
props = zip(*features)[1]
keys = [set(prop.keys()) for prop in props]
keys = reduce(lambda a, b: a & b, keys)
return PythonDatasource.wkb_features(keys=keys, features=features)
def features(self, query):
'''
'''
logging.debug('Rendering %s' % str(query.bbox))
tiles = list_tiles(query, self.zoom_adjust)
features = []
seen = set()
for (wkb, props) in load_features(8, self.host, self.port, self.path, tiles):
if not self.clipped:
# not clipped means get rid of inevitable dupes
key = (wkb, tuple(sorted(props.items())))
if key in seen:
continue
seen.add(key)
features.append((wkb, utf8_keys(props)))
if self.sort:
logging.debug('Sorting by %s %s' % (self.sort, 'descending' if self.reverse else 'ascending'))
key_func = lambda wkb_props: wkb_props[1].get(self.sort, None)
features.sort(reverse=self.reverse, key=key_func)
if len(features) == 0:
return PythonDatasource.wkb_features(keys=[], features=[])
# build a set of shared keys
props = list(zip(*features))[1]
keys = [set(prop.keys()) for prop in props]
keys = reduce(lambda a, b: a & b, keys)
return PythonDatasource.wkb_features(keys=keys, features=features)
def __init__(self, template, sort_key=None, clipped='true'):
''' Make a new Datasource.
Parameters:
template:
Required URL template with placeholders for tile zoom, x and y,
e.g. "http://example.com/layer/{z}/{x}/{y}.json".
sort_key:
Optional field name to use when sorting features for rendering.
E.g. "name" or "name ascending" to sort ascending by name,
"name descending" to sort descending by name.
clipped:
Optional boolean flag to determine correct behavior for
duplicate geometries. When tile data is not clipped, features()
will check geometry uniqueness and throw out duplicates.
Setting clipped to false for actually-clipped geometries has no
effect but wastes time. Setting clipped to false for unclipped
geometries will result in possibly wrong-looking output.
Default is "true".
'''
scheme, host, path, p, query, f = urlparse(template)
self.host = host
self.port = 443 if scheme == 'https' else 80
self.path = path + ('?' if query else '') + query
self.path = self.path.replace('%', '%%')
self.path = self.path.replace('{Z}', '{z}').replace('{z}', '%(z)d')
self.path = self.path.replace('{X}', '{x}').replace('{x}', '%(x)d')
self.path = self.path.replace('{Y}', '{y}').replace('{y}', '%(y)d')
if sort_key is None:
self.sort, self.reverse = None, None
elif sort_key.lower().endswith(' descending'):
logging.debug('Will sort by %s descending' % sort_key)
self.sort, self.reverse = sort_key.split()[0], True
else:
logging.debug('Will sort by %s ascending' % sort_key)
self.sort, self.reverse = sort_key.split()[0], False
self.clipped = clipped.lower() not in ('false', 'no', '0')
bbox = Box2d(-diameter/2, -diameter/2, diameter/2, diameter/2)
PythonDatasource.__init__(self, envelope=bbox)
def __init__(self, template, sort_key=None, clipped='true', zoom_data='single'):
''' Make a new Datasource.
Parameters:
template:
Required URL template with placeholders for tile zoom, x and y,
e.g. "http://example.com/layer/{z}/{x}/{y}.json".
sort_key:
Optional field name to use when sorting features for rendering.
E.g. "name" or "name ascending" to sort ascending by name,
"name descending" to sort descending by name.
clipped:
Optional boolean flag to determine correct behavior for
duplicate geometries. When tile data is not clipped, features()
will check geometry uniqueness and throw out duplicates.
Setting clipped to false for actually-clipped geometries has no
effect but wastes time. Setting clipped to false for unclipped
geometries will result in possibly wrong-looking output.
Default is "true".
zoom_data:
Optional keyword specifying single or double zoom data tiles.
Works especially well with relatively sparse label layers.
When set to "double", tiles will be requested at one zoom level
out from the map view, e.g. double-sized z13 tiles will be used
to render a normal z14 map.
Default is "single".
'''
scheme, host, path, p, query, f = urlparse(template)
self.host = host
self.port = 443 if scheme == 'https' else 80
if ':' in host:
self.host = host.split(':', 1)[0]
self.port = int(host.split(':', 1)[1])
self.path = path + ('?' if query else '') + query
self.path = self.path.replace('%', '%%')
self.path = self.path.replace('{Z}', '{z}').replace('{z}', '%(z)d')
self.path = self.path.replace('{X}', '{x}').replace('{x}', '%(x)d')
self.path = self.path.replace('{Y}', '{y}').replace('{y}', '%(y)d')
if sort_key is None:
self.sort, self.reverse = None, None
elif sort_key.lower().endswith(' descending'):
logging.debug('Will sort by %s descending' % sort_key)
self.sort, self.reverse = sort_key.split()[0], True
else:
logging.debug('Will sort by %s ascending' % sort_key)
self.sort, self.reverse = sort_key.split()[0], False
self.clipped = clipped.lower() not in ('false', 'no', '0')
self.zoom_adjust = {'double': 1}.get(zoom_data.lower(), 0)
bbox = Box2d(-diameter/2, -diameter/2, diameter/2, diameter/2)
PythonDatasource.__init__(self, envelope=bbox)
def __init__(self,
template,
sort_key=None,
clipped='true',
zoom_data='single'):
''' Make a new Datasource.
Parameters:
template:
Required URL template with placeholders for tile zoom, x and y,
e.g. "http://example.com/layer/{z}/{x}/{y}.json".
sort_key:
Optional field name to use when sorting features for rendering.
E.g. "name" or "name ascending" to sort ascending by name,
"name descending" to sort descending by name.
clipped:
Optional boolean flag to determine correct behavior for
duplicate geometries. When tile data is not clipped, features()
will check geometry uniqueness and throw out duplicates.
Setting clipped to false for actually-clipped geometries has no
effect but wastes time. Setting clipped to false for unclipped
geometries will result in possibly wrong-looking output.
Default is "true".
zoom_data:
Optional keyword specifying single or double zoom data tiles.
Works especially well with relatively sparse label layers.
When set to "double", tiles will be requested at one zoom level
out from the map view, e.g. double-sized z13 tiles will be used
to render a normal z14 map.
Default is "single".
'''
scheme, host, path, p, query, f = urlparse(template)
self.host = host
self.port = 443 if scheme == 'https' else 80
if ':' in host:
self.host = host.split(':', 1)[0]
self.port = int(host.split(':', 1)[1])
self.path = path + ('?' if query else '') + query
self.path = self.path.replace('%', '%%')
self.path = self.path.replace('{Z}', '{z}').replace('{z}', '%(z)d')
self.path = self.path.replace('{X}', '{x}').replace('{x}', '%(x)d')
self.path = self.path.replace('{Y}', '{y}').replace('{y}', '%(y)d')
if sort_key is None:
self.sort, self.reverse = None, None
elif sort_key.lower().endswith(' descending'):
logging.debug('Will sort by %s descending' % sort_key)
self.sort, self.reverse = sort_key.split()[0], True
else:
logging.debug('Will sort by %s ascending' % sort_key)
self.sort, self.reverse = sort_key.split()[0], False
self.clipped = clipped.lower() not in ('false', 'no', '0')
self.zoom_adjust = {'double': 1}.get(zoom_data.lower(), 0)
bbox = Box2d(-diameter / 2, -diameter / 2, diameter / 2, diameter / 2)
PythonDatasource.__init__(self, envelope=bbox)
