本文整理汇总了Python中qgis.core.QgsWkbTypes.isSingleType方法的典型用法代码示例。如果您正苦于以下问题：Python QgsWkbTypes.isSingleType方法的具体用法？Python QgsWkbTypes.isSingleType怎么用？Python QgsWkbTypes.isSingleType使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类qgis.core.QgsWkbTypes的用法示例。
在下文中一共展示了QgsWkbTypes.isSingleType方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: load_complex_gml
# 需要导入模块: from qgis.core import QgsWkbTypes [as 别名]
# 或者: from qgis.core.QgsWkbTypes import isSingleType [as 别名]
def load_complex_gml(self, xml_uri, is_remote, attributes = {}, geometry_mapping = None, logger = None, swap_xy = False):
"""
:param xml_uri: the XML URI
:param is_remote: True if it has to be fetched by http
:param attributes: { 'attr1' : ( '//xpath/expression', QVariant.Int ) }
:param geometry_mapping: XPath expression to a gml geometry node
:param swap_xy: True if X/Y coordinates must be swapped
:returns: the created layer
"""
try:
if is_remote:
xml_src = remote_open_from_qgis(xml_uri)
else:
# Open the file in binary mode, this means returning bytes
# instead of a string whose encoding would have to be interpreted
# it is up to the XML parser to determine which encoding it is
xml_src = open(xml_uri, 'rb')
src = ComplexFeatureSource(xml_src, attributes, geometry_mapping, logger)
attr_list = [ (k, v[1]) for k, v in attributes.items() ]
layers = {}
features = {}
layer_geom_type = {}
for id, fid, qgsgeoms, xml, attrs in src.getFeatures(swap_xy):
# layer creation
if qgsgeoms == []:
if "" not in layers:
layer = self._create_layer('none', None, attr_list, src.title, "nogeom")
self._add_properties_to_layer(layer, xml_uri, is_remote, attributes, geometry_mapping)
layers["nogeom"] = layer
else:
for (qgsgeom, srid), tag in qgsgeoms:
if tag in layers:
continue
type2d = QgsWkbTypes.flatType(qgsgeom.wkbType())
typemap = {QgsWkbTypes.Point: 'point',
QgsWkbTypes.MultiPoint: 'multipoint',
QgsWkbTypes.LineString: 'linestring',
QgsWkbTypes.MultiLineString: 'multilinestring',
QgsWkbTypes.Polygon: 'polygon',
QgsWkbTypes.MultiPolygon: 'multipolygon',
QgsWkbTypes.CompoundCurve: 'compoundcurve',
QgsWkbTypes.CircularString: 'compoundcurve',
QgsWkbTypes.MultiCurve: 'multicurve',
QgsWkbTypes.CurvePolygon: 'curvepolygon',
QgsWkbTypes.MultiSurface: 'multisurface'}
if qgsgeom and type2d in typemap:
title = "{} ({})".format(src.title, no_prefix(tag))
layer = self._create_layer(typemap[QgsWkbTypes.multiType(type2d)], srid, attr_list, title, no_prefix(tag))
else:
raise RuntimeError("Unsupported geometry type {}".format(qgsgeom.wkbType()))
self._add_properties_to_layer(layer, xml_uri, is_remote, attributes, geometry_mapping)
layers[tag] = layer
# collect features
f = QgsFeature(layer.dataProvider().fields(), id)
f.setAttribute("id", str(id))
f.setAttribute("fid", fid)
for k, v in attrs.items():
r = f.setAttribute(k, v)
for g, tag in qgsgeoms:
if tag not in features:
features[tag] = []
fcopy = QgsFeature(f)
fcopy.setAttribute("_xml_", ET.tostring(xml).decode('utf8'))
if g:
qgsgeom, _ = g
if QgsWkbTypes.isMultiType(layers[tag].wkbType()) and QgsWkbTypes.isSingleType(qgsgeom.wkbType()):
# force multi
qgsgeom.convertToMultiType()
fcopy.setGeometry(qgsgeom)
features[tag].append(fcopy)
# write features
for tag, f in features.items():
if len(f) > 0:
layer = layers[tag]
layer.startEditing()
layer.addFeatures(f)
layer.commitChanges()
finally:
xml_src.close()
# Set the styl for polygons coming from boundedBy
for tag_name, layer in layers.items():
if tag_name.endswith("boundedBy"):
layer.loadNamedStyle(os.path.join(os.path.dirname(__file__), "..", "gui", "bounded_by_style.qml"))
return layers