本文整理汇总了Python中qgis.core.QgsProcessingUtils.compatibleLayers方法的典型用法代码示例。如果您正苦于以下问题：Python QgsProcessingUtils.compatibleLayers方法的具体用法？Python QgsProcessingUtils.compatibleLayers怎么用？Python QgsProcessingUtils.compatibleLayers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.QgsProcessingUtils的用法示例。
在下文中一共展示了QgsProcessingUtils.compatibleLayers方法的5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: checkExtentCRS
# 需要导入模块: from qgis.core import QgsProcessingUtils [as 别名]
# 或者: from qgis.core.QgsProcessingUtils import compatibleLayers [as 别名]
def checkExtentCRS(self):
unmatchingCRS = False
hasExtent = False
context = dataobjects.createContext()
projectCRS = iface.mapCanvas().mapSettings().destinationCrs()
layers = QgsProcessingUtils.compatibleLayers(QgsProject.instance())
for param in self.algorithm().parameterDefinitions():
if isinstance(param, (ParameterRaster, ParameterVector, ParameterMultipleInput)):
if param.value:
if isinstance(param, ParameterMultipleInput):
inputlayers = param.value.split(';')
else:
inputlayers = [param.value]
for inputlayer in inputlayers:
for layer in layers:
if layer.source() == inputlayer:
if layer.crs() != projectCRS:
unmatchingCRS = True
p = QgsProcessingUtils.mapLayerFromString(inputlayer, context)
if p is not None:
if p.crs() != projectCRS:
unmatchingCRS = True
if isinstance(param, ParameterExtent):
if param.skip_crs_check:
continue
value = self.mainWidget().wrappers[param.name()].widget.leText.text().strip()
if value:
hasExtent = True
return hasExtent and unmatchingCRS示例2: setOutputCRS
# 需要导入模块: from qgis.core import QgsProcessingUtils [as 别名]
# 或者: from qgis.core.QgsProcessingUtils import compatibleLayers [as 别名]
def setOutputCRS(self):
context = dataobjects.createContext()
layers = QgsProcessingUtils.compatibleLayers(QgsProject.instance())
for param in self.parameterDefinitions():
if isinstance(param, (ParameterRaster, ParameterVector, ParameterMultipleInput)):
if param.value:
if isinstance(param, ParameterMultipleInput):
inputlayers = param.value.split(';')
else:
inputlayers = [param.value]
for inputlayer in inputlayers:
for layer in layers:
if layer.source() == inputlayer:
self.crs = layer.crs()
return
p = QgsProcessingUtils.mapLayerFromString(inputlayer, context)
if p is not None:
self.crs = p.crs()
p = None
return
try:
from qgis.utils import iface
if iface is not None:
self.crs = iface.mapCanvas().mapSettings().destinationCrs()
except:
pass示例3: resolveDataObjects
# 需要导入模块: from qgis.core import QgsProcessingUtils [as 别名]
# 或者: from qgis.core.QgsProcessingUtils import compatibleLayers [as 别名]
def resolveDataObjects(self):
layers = QgsProcessingUtils.compatibleLayers(QgsProject.instance())
for param in self.parameters:
if isinstance(param, (ParameterRaster, ParameterVector, ParameterTable,
ParameterMultipleInput)):
if param.value:
if isinstance(param, ParameterMultipleInput):
inputlayers = param.value.split(';')
else:
inputlayers = [param.value]
for i, inputlayer in enumerate(inputlayers):
for layer in layers:
if layer.name() == inputlayer:
inputlayers[i] = layer.source()
break
param.setValue(";".join(inputlayers))示例4: useLayerExtent
# 需要导入模块: from qgis.core import QgsProcessingUtils [as 别名]
# 或者: from qgis.core.QgsProcessingUtils import compatibleLayers [as 别名]
def useLayerExtent(self):
extentsDict = {}
extents = []
layers = QgsProcessingUtils.compatibleLayers(QgsProject.instance())
for layer in layers:
authid = layer.crs().authid()
if ProcessingConfig.getSetting(ProcessingConfig.SHOW_CRS_DEF) \
and authid is not None:
layerName = u'{} [{}]'.format(layer.name(), authid)
else:
layerName = layer.name()
extents.append(layerName)
extentsDict[layerName] = {"extent": layer.extent(), "authid": authid}
(item, ok) = QInputDialog.getItem(self, self.tr('Select Extent'),
self.tr('Use extent from'), extents, 0, False)
if ok:
self.setValueFromRect(QgsReferencedRectangle(extentsDict[item]["extent"], QgsCoordinateReferenceSystem(extentsDict[item]["authid"])))示例5: useLayerExtent
# 需要导入模块: from qgis.core import QgsProcessingUtils [as 别名]
# 或者: from qgis.core.QgsProcessingUtils import compatibleLayers [as 别名]
def useLayerExtent(self):
CANVAS_KEY = 'Use canvas extent'
extentsDict = {}
extentsDict[CANVAS_KEY] = {"extent": iface.mapCanvas().extent(),
"authid": iface.mapCanvas().mapSettings().destinationCrs().authid()}
extents = [CANVAS_KEY]
layers = QgsProcessingUtils.compatibleLayers(QgsProject.instance())
for layer in layers:
authid = layer.crs().authid()
if ProcessingConfig.getSetting(ProcessingConfig.SHOW_CRS_DEF) \
and authid is not None:
layerName = u'{} [{}]'.format(layer.name(), authid)
else:
layerName = layer.name()
extents.append(layerName)
extentsDict[layerName] = {"extent": layer.extent(), "authid": authid}
(item, ok) = QInputDialog.getItem(self, self.tr('Select extent'),
self.tr('Use extent from'), extents, False)
if ok:
self.setValueFromRect(extentsDict[item]["extent"])
if extentsDict[item]["authid"] != iface.mapCanvas().mapSettings().destinationCrs().authid():
iface.messageBar().pushMessage(self.tr("Warning"),
self.tr("The projection of the chosen layer is not the same as canvas projection! The selected extent might not be what was intended."),
QgsMessageBar.WARNING, 8)