def disconnect_projectsignals(self):
safe_disconnect(QgsMapLayerRegistry.instance().layerWasAdded, self.connect_layer_signals)
safe_disconnect(QgsMapLayerRegistry.instance().layersRemoved, self.layers_removed)
safe_disconnect(self.canvas.layersChanged, self.layers_changed)
safe_disconnect(self.iface.projectRead, self.connect_signals)
safe_disconnect(self.canvas.selectionChanged, self.selection_changed)
safe_disconnect(self.canvas.selectionChanged, self.viewer.selection_changed)
def handle(self, **kwargs):
self.logger.debug('>>> Handler: 7...')
__config = load_config()
params = __config[PLUGIN_CRITICIDADE]
criticidade_layer = kwargs['criticidade_layer']
output_vector = kwargs['output_criticidade_vector']
try:
save_file(criticidade_layer, output_vector)
layers = [kwargs['criticidade_layer']]
remove_layers(layers)
output_layer = QgsVectorLayer(output_vector, 'criticidade', 'ogr')
QgsMapLayerRegistry.instance().addMapLayers([output_layer])
style = params['style']
set_layer_style(output_layer, PLUGIN_CRITICIDADE,
style['criticidade'])
self.next(**kwargs)
except Exception as e:
raise RuntimeError(str(e))
def draw_layer(self, layer_name):
displayed = layer_name in self.layers
if displayed:
if self.layers[layer_name].isValid():
self.layers[layer_name].setCacheImage(None)
self.layers[layer_name].triggerRepaint()
return
# Specify the view and the column to use for the layer
self.uri.setDataSource('public', 'measure_formated', layer_name)
# Specify the primary key of the entries. For the record, the only unique column is measure_id
self.uri.setKeyColumn('measure_id')
# Create a layer based on the information previously specified (database and column). The layer is
# not yet added to the UI. The layer is a Postgres type
layer = QgsVectorLayer(self.uri.uri(), layer_name, 'postgres')
# Check if the Layer is valid or not (in case of the column/table/... does not exist
if not layer.isValid():
# print("Erreur au chargement de " + layer_name)
return
# Save the layer into the layer list (reminder: the layer list is useful to refresh all layers when
# a notification is received)
# Add the created layer to the QGIS project
QgsMapLayerRegistry.instance().addMapLayer(layer)
self.layers[layer_name] = layer
# refresh the layer
layer.setCacheImage(None)
layer.triggerRepaint()
def getPoint(self, mapPoint):
self.set_rad.setEnabled(True)
# change tool so you don't get more than one POI
self.canvas.unsetMapTool(self.emitPoint)
self.canvas.setMapTool(self.userTool)
# Get the click
if mapPoint:
self.atk_pt = QgsPoint(mapPoint)
self.distance()
# Specify the geometry type
layer = QgsVectorLayer('Point?crs=epsg:28992', 'Attack Point',
'memory')
style = "style_attack.qml"
qml_path = self.plugin_dir + "/data/" + style
layer.loadNamedStyle(qml_path)
layer.triggerRepaint()
# Set the provider to accept the data source
prov = layer.dataProvider()
# Add a new feature and assign the geometry
feat = QgsFeature()
feat.setGeometry(QgsGeometry.fromPoint(mapPoint))
prov.addFeatures([feat])
# Update extent of the layer
layer.updateExtents()
# Add the layer to the Layers panel
QgsMapLayerRegistry.instance().addMapLayers([layer])
def deleteEvac(self):
routes_layer = uf.getLegendLayerByName(self.iface, "Routes")
if routes_layer:
QgsMapLayerRegistry.instance().removeMapLayer(routes_layer.id())
lineLayer = uf.getLegendLayerByName(iface, "road_net")
lineLayer.removeSelection()
layers = ["Buildings to evacuate", "Shelters"]
for layer in layers:
uf.getLegendLayerByName(self.iface, layer).removeSelection()
self.refreshCanvas(lineLayer)
item = ''
for i in range(5):
# i is the table row, items must be added as QTableWidgetItems
self.to_evac_info.setItem(i, 0,
QtGui.QTableWidgetItem(unicode(item)))
self.shelter_info.setItem(i, 0,
QtGui.QTableWidgetItem(unicode(item)))
self.select_POI.setEnabled(True)
self.select_shelter.setEnabled(False)
self.shortestRouteButton.setEnabled(False)
self.warning_msg.setVisible(False)
self.big_button.setEnabled(False)
def new(self, recalcular=False, layerName=None):
mapCanvas = self.iface.mapCanvas()
itens = []
for i in range(mapCanvas.layerCount() - 1, -1, -1):
try:
layer = mapCanvas.layer(i)
layerName = layer.name()
itens.append(layerName)
except:
pass
if len(itens) == 0: return None
if not recalcular:
filename, ok = QtGui.QInputDialog.getText(None, "Nome do arquivo",
u"Nome do arquivo:")
if not ok:
return None
else:
filename = ''
if layerName is None:
layerList = QgsMapLayerRegistry.instance().mapLayersByName(
layerName)
layer = None
if layerList:
layer = layerList[-1]
else:
itens = []
for i in range(mapCanvas.layerCount() - 1, -1, -1):
try:
layer = mapCanvas.layer(i)
layerName = layer.name()
itens.append(layerName)
except:
pass
item, ok = QtGui.QInputDialog.getItem(
None, "Camada com tracado",
u"Selecione a camada com o traçado:", itens, 0, False)
if not (ok) or not (item):
return None
else:
layerList = QgsMapLayerRegistry.instance().mapLayersByName(
item)
layer = None
if layerList:
layer = layerList[0]
dist, ok = QtGui.QInputDialog.getDouble(None, "Distancia",
u"Distancia entre estacas:",
20.0, -10000, 10000, 2)
if not ok or dist <= 0:
return None
estaca, ok = QtGui.QInputDialog.getInteger(None, "Estaca Inicial",
u"Estaca Inicial:", 0,
-10000, 10000, 2)
if not ok:
return None
return filename, layer, dist, estaca
def enterShel(self):
self.shortestRouteButton.setEnabled(False)
routes_layer = uf.getLegendLayerByName(self.iface, "Routes")
if routes_layer:
QgsMapLayerRegistry.instance().removeMapLayer(routes_layer.id())
if self.shel_layer:
self.shel_layer.deselect(self.shel_feat.id())
lineLayer = uf.getLegendLayerByName(iface, "road_net")
lineLayer.deselect(self.shelId)
self.canvas.setMapTool(self.emitShel)
def disconnect_projectsignals(self):
safe_disconnect(QgsMapLayerRegistry.instance().layerWasAdded,
self.connect_layer_signals)
safe_disconnect(QgsMapLayerRegistry.instance().layersRemoved,
self.layers_removed)
safe_disconnect(self.canvas.layersChanged, self.layers_changed)
safe_disconnect(self.iface.projectRead, self.connect_signals)
safe_disconnect(self.canvas.selectionChanged, self.selection_changed)
safe_disconnect(self.canvas.selectionChanged,
self.viewer.selection_changed)
def createLayer(self, mtype, directory=''):
layerName = '' # 图层名称
layerType = '' # 图层类型
landus = [] # Symbol分类
if mtype == LayerType.SITE:
layerName = u'基站'
layerType = QGis.WKBPoint
landus = SiteSymbol
elif mtype == LayerType.CELL:
layerName = u'小区'
layerType = QGis.WKBPolygon
landus = CellSymbol
else:
layerName = u'相邻小区'
layerType = QGis.WKBLineString
landus = ServingCellSymbol
# 删除原有图层文件
deleteShapefile(directory, layerName)
shapPath = os.path.join(directory, layerName + u".shp")
fileds = self.createAttributesByType(mtype)
# 创建出Shap文件
# 数据源编码模式为GBK2312（否则中文字段会乱码）
wr = QgsVectorFileWriter(shapPath, "GBK2312", fileds, layerType, None,
"ESRI Shapefile")
# 如果保存的时候没有错误
if wr.hasError() == QgsVectorFileWriter.NoError:
pass
else:
print wr.hasError()
raise Exception, wr.errorMessage() # 发生错误，抛出异常交给外面的方法处理异常
del wr # 使添加的字段生效
layer = QgsVectorLayer(shapPath, layerName, 'ogr')
# 只有当Symbol分类规则不为空时才设置
if landus != None and len(landus) > 0:
myLandus = {}
for i, (color, lab) in landus.items():
if i == u'移动':
myLandus[i] = (self.ydcolor, lab)
elif i == u'联通':
myLandus[i] = (self.ltcolor, lab)
elif i == u'电信':
myLandus[i] = (self.dxcolor, lab)
else:
myLandus[i] = (self.ttcolor, lab)
self.initSymbol(myLandus, layer, mtype)
QgsMapLayerRegistry.instance().addMapLayer(layer)
def remove_layer(self, layer_name):
"""
Remove a layer from the canvas and the legend, if it exists
:param layer_name:
:return:
"""
print("removeLayer" + layer_name)
for layer in QgsMapLayerRegistry.instance().mapLayers():
if layer.find(layer_name) != -1:
QgsMapLayerRegistry.instance().removeMapLayer(layer)
if layer_name in self.layers:
del self.layers[layer_name]
def dup_layer(self, crs, names):
for name in names:
layer = uf.getLegendLayerByName(self.iface, "POI_Evacu8")
layer_type = {'0': 'Point', '1': 'LineString', '2': 'Polygon'}
mem_layer = QgsVectorLayer(
layer_type[str(layer.geometryType())] + "?crs=epsg:" +
str(crs), name, "memory")
feats = [feat for feat in layer.getFeatures()]
mem_layer_data = mem_layer.dataProvider()
attr = layer.dataProvider().fields().toList()
mem_layer_data.addAttributes(attr)
mem_layer.updateFields()
mem_layer_data.addFeatures(feats)
QgsMapLayerRegistry.instance().addMapLayer(mem_layer)
def viewerReady(self):
"""
Called once the viewer is loaded and ready to get location events.
"""
self.disconnect_signals()
self.connect_signals()
self.iface.projectRead.connect(self.connect_signals)
self.canvas.layersChanged.connect(self.layers_changed)
self.canvas.selectionChanged.connect(self.selection_changed)
self.canvas.selectionChanged.connect(self.viewer.selection_changed)
QgsMapLayerRegistry.instance().layersRemoved.connect(self.layers_removed)
QgsMapLayerRegistry.instance().layerWasAdded.connect(self.connect_layer_signals)
self.center_on_canvas()
self.viewer.activelayercombo.setLayer(self.iface.activeLayer())
def getLayerFromId(layerId):
try:
layer = QgsMapLayerRegistry.instance().mapLayers()[layerId]
return layer
except:
warn("Could not get layer for id {}".format(layerId))
return None
def viewerReady(self):
"""
Called once the viewer is loaded and ready to get location events.
"""
self.disconnect_signals()
self.connect_signals()
self.iface.projectRead.connect(self.connect_signals)
self.canvas.layersChanged.connect(self.layers_changed)
self.canvas.selectionChanged.connect(self.selection_changed)
self.canvas.selectionChanged.connect(self.viewer.selection_changed)
QgsMapLayerRegistry.instance().layersRemoved.connect(
self.layers_removed)
QgsMapLayerRegistry.instance().layerWasAdded.connect(
self.connect_layer_signals)
self.center_on_canvas()
self.viewer.activelayercombo.setLayer(self.iface.activeLayer())
def layer_from_name(layerName):
# Important: If multiple layers with same name exist, it will return the
# first one it finds
for (id, layer) in QgsMapLayerRegistry.instance().mapLayers().iteritems():
if unicode(layer.name()) == layerName:
return layer
return None
def create_point(self, p1, name):
layer = QgsVectorLayer('Point?crs=%s' % int(self.crs), name, "memory")
mycrs = QgsCoordinateReferenceSystem(int(self.crs), 0)
self.reprojectgeographic = QgsCoordinateTransform(
self.iface.mapCanvas().mapRenderer().destinationCrs(), mycrs)
pr = layer.dataProvider()
point = QgsFeature()
point.setGeometry(
QgsGeometry.fromPoint(self.reprojectgeographic.transform(p1)))
pr.addFeatures([point])
#layer.setCrs(QgsCoordinateReferenceSystem(int(self.crs), 0))
layer.updateExtents()
QgsMapLayerRegistry.instance().addMapLayer(layer)
return p1
def getAllLayerIds(filter_func):
# FIXME Make this nicer
res = []
for (id, layer) in QgsMapLayerRegistry.instance().mapLayers().iteritems():
if filter_func(layer):
res.append(id)
return res
def layer_from_name(layerName):
# Important: If multiple layers with same name exist, it will return the
# first one it finds
for (id, layer) in QgsMapLayerRegistry.instance().mapLayers().iteritems():
if unicode(layer.name()) == layerName:
return layer
return None
def getLayerFromId(layerId):
try:
layer = QgsMapLayerRegistry.instance().mapLayers()[layerId]
return layer
except:
warn("Could not get layer for id {}".format(layerId))
return None
def getAllLayerIds(filter_func):
# FIXME Make this nicer
res = []
for (id, layer) in QgsMapLayerRegistry.instance().mapLayers().iteritems():
if filter_func(layer):
res.append(id)
return res
def enterPoi(self):
if not (QgsMapLayerRegistry.instance().mapLayersByName('Attack Point')
):
# remember currently selected tool
self.userTool = self.canvas.mapTool()
# activate coordinate capture tool
self.canvas.setMapTool(self.emitPoint)
def get_layer(layer_name):
layermap = QgsMapLayerRegistry.instance().mapLayers()
for name, layer in layermap.iteritems():
if layer.name() == layer_name:
if layer.isValid():
return layer
else:
return None
def get_layer(layer_name):
layermap = QgsMapLayerRegistry.instance().mapLayers()
for name, layer in layermap.iteritems():
if layer.name() == layer_name:
if layer.isValid():
return layer
else:
return None
def poly(self):
geom = self.rubberband.asGeometry()
# Set the provider to accept the data source
pr = self.layer.dataProvider()
# Add a new feature and assign the geometry
feat = QgsFeature()
feat.setGeometry(geom)
pr.addFeatures([feat])
# Update extent of the layer
self.layer.updateExtents()
self.refreshCanvas(self.layer)
# Add the layer to the Layers panel
QgsMapLayerRegistry.instance().addMapLayers([self.layer])
def getLayerAttributes(layerId):
try:
layer = QgsMapLayerRegistry.instance().mapLayers()[layerId]
fieldmap = layer.pendingFields()
return fieldmap
except:
# OpenLayers, Raster layers don't work with this
warn("Could not get attributes of layer {}".format(layerId))
return None
def exit_dialog(self, points, crs):
self.dialog.close()
layer = QgsVectorLayer('LineString', self.name_tracado, "memory")
pr = layer.dataProvider()
print points
anterior = QgsPoint(points[0])
fets = []
for p in points[1:]:
fet = QgsFeature(layer.pendingFields())
fet.setGeometry(QgsGeometry.fromPolyline([anterior, QgsPoint(p)]))
fets.append(fet)
anterior = QgsPoint(p)
pr.addFeatures(fets)
self.crs = crs
layer.setCrs(QgsCoordinateReferenceSystem(int(crs), 0))
layer.updateExtents()
QgsMapLayerRegistry.instance().addMapLayer(layer)
def setup_gui(self):
""" Function to combos creation """
self.shapeButton.clicked.connect(self.writeTxt)
self.rasterCombo.clear()
layers = QgsMapLayerRegistry.instance().mapLayers().values()
layerRasters = []
layerVectors = []
for layer in layers:
if layer.type() == QgsMapLayer.RasterLayer:
self.rasterCombo.addItem(layer.name(), layer)
def getLayerAttributes(layerId):
try:
layer=QgsMapLayerRegistry.instance().mapLayers()[layerId]
fieldmap = layer.pendingFields()
#TODO v1.7 figure out what to do for fields with fieldmap.fieldOrigin(idx) = QgsFields.OriginEdit/OriginExpression
return fieldmap
except:
# OpenLayers, Raster layers don't work with this
warn("Could not get attributes of layer {}".format(layerId))
return None
def getLayerAttributes(layerId):
try:
layer = QgsMapLayerRegistry.instance().mapLayers()[layerId]
fieldmap = layer.pendingFields()
#TODO v1.7 figure out what to do for fields with fieldmap.fieldOrigin(idx) = QgsFields.OriginEdit/OriginExpression
return fieldmap
except:
# OpenLayers, Raster layers don't work with this
warn("Could not get attributes of layer {}".format(layerId))
return None
def get_layer(self, layer_name):
if self.layer.name() != layer_name:
self.ini_dialog()
layermap = QgsMapLayerRegistry.instance().mapLayers()
for name, layer in layermap.iteritems():
if layer.name() == layer_name:
if layer.isValid():
self.layer = layer
self.get_raster_properties()
else:
self.layer = None
def populate(self, comboBox, isMaster, idx=0, update=True):
idlayers = list(QgsMapLayerRegistry.instance().mapLayers().iteritems())
self.populateFromLayers(comboBox, idlayers, isMaster)
if not idlayers:
return
if not update:
return
if isMaster:
self.masterUpdated(idx)
else:
self.slaveUpdated(idx)
def get_layer(self, layer_name):
if self.layer.name() != layer_name:
self.ini_dialog()
layermap = QgsMapLayerRegistry.instance().mapLayers()
for name, layer in layermap.iteritems():
if layer.name() == layer_name:
if layer.isValid():
self.layer = layer
self.get_raster_properties()
else:
self.layer = None
def setResultLayer(self, result_list):
layerName = u'规划基站结果'
layerType = QGis.WKBPoint
project_dir = getProjectDir(self.iface)
# 先判断是否已存在规划基站结果图层
result_layer = getLayerByName(layerName, self.iface)
if result_layer:
#清空数据
delAllFeatures(result_layer)
else:
# 删除原有图层文件
deleteShapefile(project_dir, layerName)
shapPath = os.path.join(project_dir, layerName + u".shp")
# 生成图层
fileds = self.createFields()
# 创建出Shap文件
# 数据源编码模式为GBK2312（否则中文字段会乱码）
wr = QgsVectorFileWriter(shapPath, "GBK2312", fileds, layerType, None, "ESRI Shapefile")
# 如果保存的时候没有错误
if wr.hasError() == QgsVectorFileWriter.NoError:
pass
else:
print wr.hasError()
raise Exception, wr.errorMessage() # 发生错误，抛出异常交给外面的方法处理异常
del wr # 使添加的字段生效
result_layer = QgsVectorLayer(shapPath, layerName, 'ogr')
QgsMapLayerRegistry.instance().addMapLayer(result_layer)
# 添加数据
features_list = []
for result in result_list:
feature = createABasicPointFeature(QgsPoint(float(result[1]),float(result[2])), result)
features_list.append(feature)
importFeaturesToLayer(result_layer, features_list)
# 合并站点
mergeNSite = OptimizateNewSite(result_layer, self.parent)
if mergeNSite.run():
QMessageBox.information(self.parent, u"自动规划基站", u"自动规划基站成功！")
else:
QMessageBox.critical(self.parent, u"自动规划基站", u"自动规划基站失败！")
def getLayerAttributes(layerId):
try:
layer = QgsMapLayerRegistry.instance().mapLayers()[layerId]
#QgsMessageLog.logMessage(str(QgsMapLayerRegistry.instance().mapLayers()))
#QgsMessageLog.logMessage("layer"+str(layer))
provider = layer.dataProvider() # this will crash on OpenLayers layers
fieldmap = provider.fields(
) # this function will crash on raster layers
return fieldmap
except:
QgsMessageLog.logMessage(
"Could not get attributes of layer {}".format(layerId))
return None
def plotar(self):
vl = QgsVectorLayer("Point", "temporary_points", "memory")
pr = vl.dataProvider()
# Enter editing mode
vl.startEditing()
# add fields
pr.addAttributes([
QgsField("estaca", QVariant.String),
QgsField("descrição", QVariant.String),
QgsField("north", QVariant.String),
QgsField("este", QVariant.String),
QgsField("cota", QVariant.String),
QgsField("azimite", QVariant.String)
])
fets = []
for r in range(self.tableWidget.rowCount()):
ident = self.tableWidget.item(r, 0).text()
if ident in ["", None]: break
fet = QgsFeature(vl.pendingFields())
n = 0.0
e = 0.0
try:
es = self.tableWidget.item(r, 0).text()
d = self.tableWidget.item(r, 1).text()
n = float(self.tableWidget.item(r, 3).text())
e = float(self.tableWidget.item(r, 4).text())
c = float(self.tableWidget.item(r, 5).text())
a = self.tableWidget.item(r, 6).text()
except:
break
fet.setGeometry(QgsGeometry.fromPoint(QgsPoint(e, n)))
fet.setAttributes([es, d, n, e, c, a])
fets.append(fet)
pr.addFeatures(fets)
vl.commitChanges()
QgsMapLayerRegistry.instance().addMapLayer(vl)
def loadCsvFiles(self):
# 清除画布上的所有图层
# QgsMapLayerRegistry.instance().removeAllMapLayers()
# 图标样式，圆，大小设为1
# symbol = QgsMarkerSymbolV2.createSimple({'name':'circle', 'size':'1'})
filepath = self.dlg.lineEdit.text()
# 获取文件夹中的所有文件，并过滤不是csv格式的文件
files = os.listdir(filepath)
for file in files:
if not os.path.isdir(file) and os.path.splitext(
file)[1] == '.csv' and not file.startswith('.'):
uri = "file:///" + filepath + "/" + file + "?delimiter=%s&crs=epsg:4326&xField=%s&yField=%s" % (
",", "longitude", "latitude")
vlayer = QgsVectorLayer(uri,
os.path.splitext(file)[0],
"delimitedtext")
vlayer.rendererV2().symbol().setSize(1.3)
if vlayer.isValid():
QgsMapLayerRegistry.instance().addMapLayer(vlayer)
def createNodeLayer(self):
project_dir = getProjectDir(self.iface, u"基站")
if not project_dir:
QMessageBox.critical(self, u"错误", u"基站图层不存在!")
return False
else:
project = QgsProject.instance()
VoronoiName = u"泰森多边形"
NodesName = u"泰森结点"
# 若已存在泰森多边形和泰森结点图层，则先移除图层再删除shape文件
voronoi_layer = getLayerByName(VoronoiName, self.iface)
if voronoi_layer:
QgsMapLayerRegistry.instance().removeMapLayer(voronoi_layer)
else:
deleteShapefile(project_dir, VoronoiName)
nodes_layer = getLayerByName(NodesName, self.iface)
if nodes_layer:
QgsMapLayerRegistry.instance().removeMapLayer(nodes_layer)
else:
deleteShapefile(project_dir, NodesName)
if (voronoi_layer) or (nodes_layer):
project.write()
QMessageBox.critical(self, u"错误", u"相应文件已被占用，请重启QGIS软件！")
return False
site_layer = getLayerByName(u'基站', self.iface)
# 生成泰森多边形
VoronoiFile = os.path.join(project_dir, VoronoiName + u".shp")
Vor = processing.runalg("qgis:voronoipolygons", site_layer, 0, VoronoiFile)
Voronoi = processing.load(Vor['OUTPUT'], VoronoiName)
# 生成泰森结点
NodesFile = os.path.join(project_dir, NodesName + u".shp")
Nod = processing.runalg("qgis:extractnodes", Voronoi, NodesFile)
Nodes = processing.load(Nod['OUTPUT'], NodesName)
return Nodes
def getAllJoinedLayers(layerIds):
"""get the ids of the layers that are joined on the given layerIds"""
allJoined = set()
allLayers = QgsMapLayerRegistry.instance().mapLayers()
for (id, layer) in allLayers.iteritems():
if isRaster(layer):
continue
if id in layerIds: # let's see what the given layers are joined on
allJoined |= getAllJoinIdsOfLayer(layer)
else: # let's see if the other layers join with the given layers
joinsOfCurrentLayer = getAllJoinIdsOfLayer(layer)
if len(joinsOfCurrentLayer & layerIds) > 0:
allJoined.add(id)
return allJoined
def getAllJoinedLayers(layerIds):
"""get the ids of the layers that are joined on the given layerIds"""
allJoined = set()
allLayers = QgsMapLayerRegistry.instance().mapLayers()
for (id, layer) in allLayers.iteritems():
if isRaster(layer):
continue
if id in layerIds: # let's see what the given layers are joined on
allJoined |= getAllJoinIdsOfLayer(layer)
else: # let's see if the other layers join with the given layers
joinsOfCurrentLayer = getAllJoinIdsOfLayer(layer)
if len(joinsOfCurrentLayer & layerIds) > 0:
allJoined.add(id)
return allJoined
def populate(self, layerIds):
self.tempLayerIndexToId = {}
i = 0
for (id,layer) in QgsMapLayerRegistry.instance().mapLayers().iteritems():
if id in layerIds:
unicode_name = unicode(layer.name())
self.add_layer_to_select(unicode_name)
self.tempLayerIndexToId[i] = id
i+=1
if self.layer_count()== 0:
msg = 'There are no unmanaged layers of requested type in the project!'
QMessageBox.information(self.dialog,'Error', msg)
raise Exception(msg)
# add the attributes of the first layer in the select for gui initialization
self.add_layer_attributes(0)
self.add_connections()
def populate(self, layerIds):
idlayers_it = QgsMapLayerRegistry.instance().mapLayers().iteritems()
selected_idlayers = filter(lambda idlayer: idlayer[0] in layerIds, idlayers_it)
self.populateFromLayers(selected_idlayers)
def layer_count():
return len(QgsMapLayerRegistry.instance().mapLayers())
def get_all_layer_names():
return QgsMapLayerRegistry.instance().mapLayers().keys()
def maplayers():
return QgsMapLayerRegistry.instance().mapLayers().values()
def layer_by_name(name):
return QgsMapLayerRegistry.instance().mapLayersByName(name)[0]
def layer_by_id(layerid):
return QgsMapLayerRegistry.instance().mapLayer(layerid)
def load_layer_to_qgis(layer):
QgsMapLayerRegistry.instance().addMapLayer(layer)
sleep(0.2)
def remove_layer_from_qgis(id):
QgsMapLayerRegistry.instance().removeMapLayer(id)
sleep(0.1)
def getNameFromLayerId(layerId):
layer = QgsMapLayerRegistry.instance().mapLayers()[layerId]
return unicode(layer.name())
