本文整理汇总了Python中qgis.core.QgsVectorLayer.setLabelsEnabled方法的典型用法代码示例。如果您正苦于以下问题:Python QgsVectorLayer.setLabelsEnabled方法的具体用法?Python QgsVectorLayer.setLabelsEnabled怎么用?Python QgsVectorLayer.setLabelsEnabled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.QgsVectorLayer
的用法示例。
在下文中一共展示了QgsVectorLayer.setLabelsEnabled方法的6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: createLayer
# 需要导入模块: from qgis.core import QgsVectorLayer [as 别名]
# 或者: from qgis.core.QgsVectorLayer import setLabelsEnabled [as 别名]
def createLayer(self):
'''Create a memory layer from the zoom to locations'''
rowcnt = self.resultsTable.rowCount()
if rowcnt == 0:
return
attr = []
for item, label in enumerate(LABELS[0:self.numCol]):
label = label.lower()
if item <= 1:
attr.append(QgsField(label, QVariant.Double))
else:
attr.append(QgsField(label, QVariant.String))
ptLayer = QgsVectorLayer("Point?crs=epsg:4326", u"Lat Lon Locations", "memory")
provider = ptLayer.dataProvider()
provider.addAttributes(attr)
ptLayer.updateFields()
for id in range(rowcnt):
item = self.resultsTable.item(id, 0).data(Qt.UserRole)
feature = QgsFeature()
feature.setGeometry(QgsGeometry.fromPointXY(QgsPointXY(item.lon, item.lat)))
attr = [item.lat, item.lon, item.label]
for i in range(3, self.numCol):
attr.append(item.data[i-3])
feature.setAttributes(attr)
provider.addFeatures([feature])
ptLayer.updateExtents()
if self.settings.multiZoomStyleID == 1:
settings = QgsPalLayerSettings()
settings.fieldName = 'label'
settings.placement = QgsPalLayerSettings.AroundPoint
labeling = QgsVectorLayerSimpleLabeling(settings)
ptLayer.setLabeling(labeling)
ptLayer.setLabelsEnabled(True)
elif self.settings.multiZoomStyleID == 2 and os.path.isfile(self.settings.customQMLFile()):
ptLayer.loadNamedStyle(self.settings.customQMLFile())
QgsProject.instance().addMapLayer(ptLayer)
示例2: testBlockingItems
# 需要导入模块: from qgis.core import QgsVectorLayer [as 别名]
# 或者: from qgis.core.QgsVectorLayer import setLabelsEnabled [as 别名]
def testBlockingItems(self):
"""
Test rendering map item with blocking items
"""
format = QgsTextFormat()
format.setFont(QgsFontUtils.getStandardTestFont("Bold"))
format.setSize(20)
format.setNamedStyle("Bold")
format.setColor(QColor(0, 0, 0))
settings = QgsPalLayerSettings()
settings.setFormat(format)
settings.fieldName = "'X'"
settings.isExpression = True
settings.placement = QgsPalLayerSettings.OverPoint
vl = QgsVectorLayer("Point?crs=epsg:4326&field=id:integer", "vl", "memory")
vl.setRenderer(QgsNullSymbolRenderer())
f = QgsFeature(vl.fields(), 1)
for x in range(15):
for y in range(15):
f.setGeometry(QgsPoint(x, y))
vl.dataProvider().addFeature(f)
vl.setLabeling(QgsVectorLayerSimpleLabeling(settings))
vl.setLabelsEnabled(True)
p = QgsProject()
engine_settings = QgsLabelingEngineSettings()
engine_settings.setFlag(QgsLabelingEngineSettings.DrawLabelRectOnly, True)
p.setLabelingEngineSettings(engine_settings)
p.addMapLayer(vl)
layout = QgsLayout(p)
layout.initializeDefaults()
p.setCrs(QgsCoordinateReferenceSystem('EPSG:4326'))
map = QgsLayoutItemMap(layout)
map.attemptSetSceneRect(QRectF(10, 10, 180, 180))
map.setFrameEnabled(True)
map.zoomToExtent(vl.extent())
map.setLayers([vl])
map.setId('map')
layout.addLayoutItem(map)
map2 = QgsLayoutItemMap(layout)
map2.attemptSetSceneRect(QRectF(0, 5, 50, 80))
map2.setFrameEnabled(True)
map2.setBackgroundEnabled(False)
map2.setId('map2')
layout.addLayoutItem(map2)
map3 = QgsLayoutItemMap(layout)
map3.attemptSetSceneRect(QRectF(150, 160, 50, 50))
map3.setFrameEnabled(True)
map3.setBackgroundEnabled(False)
map3.setId('map3')
layout.addLayoutItem(map3)
map.addLabelBlockingItem(map2)
map.addLabelBlockingItem(map3)
map.setMapFlags(QgsLayoutItemMap.MapItemFlags())
checker = QgsLayoutChecker('composermap_label_blockers', layout)
checker.setControlPathPrefix("composer_map")
result, message = checker.testLayout()
self.report += checker.report()
self.assertTrue(result, message)
doc = QDomDocument("testdoc")
elem = layout.writeXml(doc, QgsReadWriteContext())
l2 = QgsLayout(p)
self.assertTrue(l2.readXml(elem, doc, QgsReadWriteContext()))
map_restore = [i for i in l2.items() if isinstance(i, QgsLayoutItemMap) and i.id() == 'map'][0]
map2_restore = [i for i in l2.items() if isinstance(i, QgsLayoutItemMap) and i.id() == 'map2'][0]
map3_restore = [i for i in l2.items() if isinstance(i, QgsLayoutItemMap) and i.id() == 'map3'][0]
self.assertTrue(map_restore.isLabelBlockingItem(map2_restore))
self.assertTrue(map_restore.isLabelBlockingItem(map3_restore))
示例3: testPartialLabels
# 需要导入模块: from qgis.core import QgsVectorLayer [as 别名]
# 或者: from qgis.core.QgsVectorLayer import setLabelsEnabled [as 别名]
def testPartialLabels(self):
"""
Test rendering map item with a show partial labels flag
"""
format = QgsTextFormat()
format.setFont(QgsFontUtils.getStandardTestFont("Bold"))
format.setSize(20)
format.setNamedStyle("Bold")
format.setColor(QColor(0, 0, 0))
settings = QgsPalLayerSettings()
settings.setFormat(format)
settings.fieldName = "'X'"
settings.isExpression = True
settings.placement = QgsPalLayerSettings.OverPoint
vl = QgsVectorLayer("Point?crs=epsg:4326&field=id:integer", "vl", "memory")
vl.setRenderer(QgsNullSymbolRenderer())
f = QgsFeature(vl.fields(), 1)
for x in range(15):
for y in range(15):
f.setGeometry(QgsPoint(x, y))
vl.dataProvider().addFeature(f)
vl.setLabeling(QgsVectorLayerSimpleLabeling(settings))
vl.setLabelsEnabled(True)
p = QgsProject()
engine_settings = QgsLabelingEngineSettings()
engine_settings.setFlag(QgsLabelingEngineSettings.UsePartialCandidates, False)
engine_settings.setFlag(QgsLabelingEngineSettings.DrawLabelRectOnly, True)
p.setLabelingEngineSettings(engine_settings)
p.addMapLayer(vl)
layout = QgsLayout(p)
layout.initializeDefaults()
p.setCrs(QgsCoordinateReferenceSystem('EPSG:4326'))
map = QgsLayoutItemMap(layout)
map.attemptSetSceneRect(QRectF(10, 10, 180, 180))
map.setFrameEnabled(True)
map.zoomToExtent(vl.extent())
map.setLayers([vl])
layout.addLayoutItem(map)
# default should always be to hide partial labels
self.assertFalse(map.mapFlags() & QgsLayoutItemMap.ShowPartialLabels)
# hiding partial labels (the default)
map.setMapFlags(QgsLayoutItemMap.MapItemFlags())
checker = QgsLayoutChecker('composermap_label_nomargin', layout)
checker.setControlPathPrefix("composer_map")
result, message = checker.testLayout()
self.report += checker.report()
self.assertTrue(result, message)
# showing partial labels
map.setMapFlags(QgsLayoutItemMap.ShowPartialLabels)
checker = QgsLayoutChecker('composermap_show_partial_labels', layout)
checker.setControlPathPrefix("composer_map")
result, message = checker.testLayout()
self.report += checker.report()
self.assertTrue(result, message)
示例4: testLabelMargin
# 需要导入模块: from qgis.core import QgsVectorLayer [as 别名]
# 或者: from qgis.core.QgsVectorLayer import setLabelsEnabled [as 别名]
def testLabelMargin(self):
"""
Test rendering map item with a label margin set
"""
format = QgsTextFormat()
format.setFont(QgsFontUtils.getStandardTestFont("Bold"))
format.setSize(20)
format.setNamedStyle("Bold")
format.setColor(QColor(0, 0, 0))
settings = QgsPalLayerSettings()
settings.setFormat(format)
settings.fieldName = "'X'"
settings.isExpression = True
settings.placement = QgsPalLayerSettings.OverPoint
vl = QgsVectorLayer("Point?crs=epsg:4326&field=id:integer", "vl", "memory")
vl.setRenderer(QgsNullSymbolRenderer())
f = QgsFeature(vl.fields(), 1)
for x in range(15):
for y in range(15):
f.setGeometry(QgsPoint(x, y))
vl.dataProvider().addFeature(f)
vl.setLabeling(QgsVectorLayerSimpleLabeling(settings))
vl.setLabelsEnabled(True)
p = QgsProject()
engine_settings = QgsLabelingEngineSettings()
engine_settings.setFlag(QgsLabelingEngineSettings.UsePartialCandidates, False)
engine_settings.setFlag(QgsLabelingEngineSettings.DrawLabelRectOnly, True)
p.setLabelingEngineSettings(engine_settings)
p.addMapLayer(vl)
layout = QgsLayout(p)
layout.initializeDefaults()
p.setCrs(QgsCoordinateReferenceSystem('EPSG:4326'))
map = QgsLayoutItemMap(layout)
map.attemptSetSceneRect(QRectF(10, 10, 180, 180))
map.setFrameEnabled(True)
map.zoomToExtent(vl.extent())
map.setLayers([vl])
layout.addLayoutItem(map)
checker = QgsLayoutChecker('composermap_label_nomargin', layout)
checker.setControlPathPrefix("composer_map")
result, message = checker.testLayout()
self.report += checker.report()
self.assertTrue(result, message)
map.setLabelMargin(QgsLayoutMeasurement(15, QgsUnitTypes.LayoutMillimeters))
checker = QgsLayoutChecker('composermap_label_margin', layout)
checker.setControlPathPrefix("composer_map")
result, message = checker.testLayout()
self.report += checker.report()
self.assertTrue(result, message)
map.setLabelMargin(QgsLayoutMeasurement(3, QgsUnitTypes.LayoutCentimeters))
checker = QgsLayoutChecker('composermap_label_cm_margin', layout)
checker.setControlPathPrefix("composer_map")
result, message = checker.testLayout()
self.report += checker.report()
self.assertTrue(result, message)
map.setMapRotation(45)
map.zoomToExtent(vl.extent())
map.setScale(map.scale() * 1.2)
checker = QgsLayoutChecker('composermap_rotated_label_margin', layout)
checker.setControlPathPrefix("composer_map")
result, message = checker.testLayout()
self.report += checker.report()
self.assertTrue(result, message)
# data defined
map.setMapRotation(0)
map.zoomToExtent(vl.extent())
map.dataDefinedProperties().setProperty(QgsLayoutObject.MapLabelMargin, QgsProperty.fromExpression('1+3'))
map.refresh()
checker = QgsLayoutChecker('composermap_dd_label_margin', layout)
checker.setControlPathPrefix("composer_map")
result, message = checker.testLayout()
self.report += checker.report()
self.assertTrue(result, message)
示例5: poiHelper
# 需要导入模块: from qgis.core import QgsVectorLayer [as 别名]
# 或者: from qgis.core.QgsVectorLayer import setLabelsEnabled [as 别名]
#.........这里部分代码省略.........
# add a feature
fet = QgsFeature(fields)
#set geometry
fromCrs = QgsCoordinateReferenceSystem(4326)
xform = QgsCoordinateTransform( fromCrs, self.poilayer.crs(), QgsProject.instance() )
prjPt = xform.transform( pt )
fet.setGeometry(QgsGeometry.fromPointXY(prjPt))
fet['id'] = int( poiId )
fet['thema'] = theme
fet['categorie'] = category
fet['type'] = poiType
fet['naam'] = name
fet["email"] = email
fet["telefoon"] = phone
#address
fet['straat'] = straat
fet['huisnr'] = huisnr
fet['busnr'] = busnr
fet['postcode'] = postcode
fet['gemeente'] = gemeente
fet['link'] = link
fet['lastupdate'] = tijd
fet['owner'] = owner
self.poiProvider.addFeatures([ fet ])
self.poilayer.updateExtents()
if saveToFile and not QgsProject.instance().mapLayer(self.poilayerid):
save = self._saveToFile( sender, startFolder )
if save:
fpath, flType = save
error, msg = QgsVectorFileWriter.writeAsVectorFormat(self.poilayer,fileName=fpath, fileEncoding="utf-8", driverName=flType )
if error == QgsVectorFileWriter.NoError:
self.poilayer = QgsVectorLayer( fpath , layername, "ogr")
self.poiProvider = self.poilayer.dataProvider()
else:
del self.poilayer, self.poiProvider
raise Exception( msg )
else:
del self.poilayer, self.poiProvider
return
# add Labels
text_format = QgsTextFormat()
text_format.setSize(12)
buffer_settings = QgsTextBufferSettings()
buffer_settings.setEnabled(True)
buffer_settings.setSize(1)
buffer_settings.setColor(QColor("white"))
palyr = QgsPalLayerSettings()
text_format.setBuffer(buffer_settings)
palyr.setFormat(text_format)
palyr.enabled = True
palyr.fieldName = 'naam'
palyr.placement = QgsPalLayerSettings.Free
self.poilayer.setLabelsEnabled(True)
self.poilayer.setLabeling( QgsVectorLayerSimpleLabeling(palyr) )
# add layer if not already
QgsProject.instance().addMapLayer(self.poilayer)
# store layer id and refresh
self.poilayerid = self.poilayer.id()
self.canvas.refresh()
def _saveToFile( self, sender, startFolder=None ):
'save to file'
filter = "OGC GeoPackage (*.gpkg);;ESRI Shape Files (*.shp);;SpatiaLite (*.sqlite);;Geojson File (*.geojson);;GML ( *.gml);;Comma separated value File (excel) (*.csv);;MapInfo TAB (*.TAB);;Any File (*.*)"
Fdlg = QFileDialog()
Fdlg.setFileMode(QFileDialog.AnyFile)
fName, __ = QFileDialog.getSaveFileName(sender, "open file", filter=filter, directory=startFolder)
if fName:
ext = os.path.splitext( fName )[1]
if "GPKG" in ext.upper():
flType = "GPKG"
elif "SHP" in ext.upper():
flType = "ESRI Shapefile"
elif "SQLITE" in ext.upper():
flType = "SQLite"
elif "GEOJSON" in ext.upper(): #no update possible -> hidden
flType = "GeoJSON"
elif "GML" in ext.upper():
flType = "GML"
elif 'TAB' in ext.upper():
flType = 'MapInfo File'
elif 'CSV' in ext.upper():
flType = 'CSV'
else:
fName = fName + ".shp"
flType = "ESRI Shapefile"
return (fName , flType )
else:
return None
示例6: geometryHelper
# 需要导入模块: from qgis.core import QgsVectorLayer [as 别名]
# 或者: from qgis.core.QgsVectorLayer import setLabelsEnabled [as 别名]
#.........这里部分代码省略.........
save = self._saveToFile( sender, startFolder )
if save:
fpath, flType = save
error, msg = QgsVectorFileWriter.writeAsVectorFormat(self.adreslayer, fileName=fpath, fileEncoding="utf-8", driverName=flType)
if error == QgsVectorFileWriter.NoError:
self.adreslayer = QgsVectorLayer( fpath, layername, "ogr")
self.adresProvider = self.adreslayer.dataProvider()
else:
del self.adreslayer, self.adresProvider
return
else:
del self.adreslayer, self.adresProvider
return
# add to map
QgsProject.instance().addMapLayer(self.adreslayer)
#labels
text_format = QgsTextFormat()
text_format.setSize(12)
buffer_settings = QgsTextBufferSettings()
buffer_settings.setEnabled(True)
buffer_settings.setSize(1)
buffer_settings.setColor(QColor("white"))
palyr = QgsPalLayerSettings()
text_format.setBuffer(buffer_settings)
palyr.setFormat(text_format)
palyr.enabled = True
palyr.fieldName = 'adres'
palyr.placement = QgsPalLayerSettings.Free
self.adreslayer.setLabelsEnabled(True)
self.adreslayer.setLabeling( QgsVectorLayerSimpleLabeling(palyr) )
# store layer id and refresh
self.adreslayerid = self.adreslayer.id()
self.canvas.refresh()
def _saveToFile( self, sender, startFolder=None ):
'save to file'
filter = "OGC GeoPackage (*.gpkg);;ESRI Shape Files (*.shp);;SpatiaLite (*.sqlite);;Geojson File (*.geojson);;GML ( *.gml);;Comma separated value File (excel) (*.csv);;MapInfo TAB (*.TAB);;Any File (*.*)"
Fdlg = QFileDialog()
Fdlg.setFileMode(QFileDialog.AnyFile)
fName, __ = QFileDialog.getSaveFileName(sender, "open file", filter=filter, directory=startFolder)
if fName:
ext = os.path.splitext( fName )[1]
if "GPKG" in ext.upper():
flType = "GPKG"
elif "SHP" in ext.upper():
flType = "ESRI Shapefile"
elif "SQLITE" in ext.upper():
flType = "SQLite"
elif "GEOJSON" in ext.upper(): #no update possible -> hidden
flType = "GeoJSON"
elif "GML" in ext.upper():
flType = "GML"
elif 'TAB' in ext.upper():
flType = 'MapInfo File'
elif 'CSV' in ext.upper():
flType = 'CSV'
else:
fName = fName + ".shp"
flType = "ESRI Shapefile"
return (fName , flType )