def __init__(self, iface):
QDialog.__init__(self)
# Set up the user interface from Designer.
self.ui = Ui_generalizer()
self.ui.setupUi(self)
self.iface = iface
self.ui.sbJenks_angle.setVisible(False)
self.ui.label_8.setVisible(False)
#set signals
self.ui.bBrowse.clicked.connect( self.outFile )
self.ui.bBrowseDir.clicked.connect( self.outDir )
self.ui.bOk.clicked.connect( self.generalize )
self.ui.cbAlgorithm.currentIndexChanged.connect( self.cbChange )
self.ui.bHelp.clicked.connect( self.showHelp )
self.ui.cbBatch.stateChanged.connect( self.BatchOn )
self.ui.bAddAlg.clicked.connect( self.AddAlgorithm )
self.ui.bDelAlg.clicked.connect( self.DelAlgorithm )
self.ui.bEditAlg.clicked.connect( self.EditAlgorithm )
self.ui.cbOutFile.stateChanged.connect( self.FileEnabled )
self.ui.cbOutDir.stateChanged.connect( self.DirEnabled )
#load line layers to lists
self.layerList = getLayersNames()
self.ui.cbInput.addItems(self.layerList)
self.ui.lstLayers.addItems(self.layerList)
[self.ui.lstLayers.item(i).setCheckState(Qt.Unchecked) for i in range(self.ui.lstLayers.count()) ]
class generalizerDialog(QDialog):
def __init__(self, iface):
QDialog.__init__(self)
# Set up the user interface from Designer.
self.ui = Ui_generalizer()
self.ui.setupUi(self)
self.iface = iface
self.ui.sbJenks_angle.setVisible(False)
self.ui.label_8.setVisible(False)
#set signals
self.ui.bBrowse.clicked.connect( self.outFile )
self.ui.bBrowseDir.clicked.connect( self.outDir )
self.ui.bOk.clicked.connect( self.generalize )
self.ui.cbAlgorithm.currentIndexChanged.connect( self.cbChange )
self.ui.bHelp.clicked.connect( self.showHelp )
self.ui.cbBatch.stateChanged.connect( self.BatchOn )
self.ui.bAddAlg.clicked.connect( self.AddAlgorithm )
self.ui.bDelAlg.clicked.connect( self.DelAlgorithm )
self.ui.bEditAlg.clicked.connect( self.EditAlgorithm )
self.ui.cbOutFile.stateChanged.connect( self.FileEnabled )
self.ui.cbOutDir.stateChanged.connect( self.DirEnabled )
#load line layers to lists
self.layerList = getLayersNames()
self.ui.cbInput.addItems(self.layerList)
self.ui.lstLayers.addItems(self.layerList)
[self.ui.lstLayers.item(i).setCheckState(Qt.Unchecked) for i in range(self.ui.lstLayers.count()) ]
def FileEnabled(self, state):
#enable or disable path to file
enabled = self.ui.eOutput.isEnabled()
self.ui.eOutput.setEnabled(not enabled)
self.ui.bBrowse.setEnabled(not enabled)
def DirEnabled(self, state):
#enable/disable directory
enabled = self.ui.eDir.isEnabled()
self.ui.eDir.setEnabled(not enabled)
self.ui.bBrowseDir.setEnabled(not enabled)
def AddAlgorithm(self):
#add new algorithm in batch mode
self.doAddAlgorithm(self.ui.tblBatchAlg.rowCount())
def EditAlgorithm(self):
#edit algorithm in batch mode
if self.ui.tblBatchAlg.currentRow() == -1:
QMessageBox.warning(self, 'Generalizer', 'Select algorithm to edit!')
return
self.doAddAlgorithm(self.ui.tblBatchAlg.currentRow())
def doAddAlgorithm(self, index):
#add new algorithm in batch mode
global algorithm
new = index > self.ui.tblBatchAlg.rowCount()-1
items = [self.ui.cbAlgorithm.itemText(i) for i in range(self.ui.cbAlgorithm.count())]
algName = QInputDialog.getItem(None, 'Generalizer', 'Choose algorithm:', items, 1, False)
if not algName[1] or algName[0].startswith('-'): return
#QMessageBox.question(self, 'Generalizer', str(alg))
par1 = None
par2 = None
if algName[0] == algorithm['boyle']:#Boyle\'s Forward-Looking Algorithm':
par1 = QSpinBox()
par1.setRange(2, 999)
msg = QInputDialog.getInt(None, 'Generalizer', 'Look ahead:', 7, 2)
if not msg[1]: return
par1.setValue(msg[0])
par1.setToolTip('Look ahead')
elif algName[0] == algorithm['sliding']:#'McMaster\'s Sliding Averaging Algorithm':
par1 = QDoubleSpinBox()
par1.setDecimals(2)
par1.setRange(0, 99.99)
msg = QInputDialog.getDouble(None, 'Generalizer', 'Slide:', 0.5, 0, 99.99)
if not msg[1]: return
par1.setValue(msg[0])
par1.setToolTip('Slide')
par2 = QSpinBox()
par2.setRange(3, 999)
par2.setSingleStep(2)
par2.setValue(6)
while par2.value()%2 == 0:
msg = QInputDialog.getInt(None, 'Generalizer', 'Look ahead (must be odd number):', par2.value()+1, 3, 999)
if not msg[1]: return
par2.setValue(msg[0])
par2.setToolTip('Look ahead')
elif algName[0] == algorithm['distance']:#'McMaster\'s Distance-Weighting Algorithm':
par1 = QDoubleSpinBox()
par1.setDecimals(2)
par1.setRange(0, 99.99)
msg = QInputDialog.getDouble(None, 'Generalizer', 'Slide:', 0.5, 0, 99.99)
if not msg[1]: return
par1.setValue(msg[0])
par1.setToolTip('Slide')
par2 = QSpinBox()
par2.setRange(3, 999)
par2.setSingleStep(2)
par2.setValue(6)
while par2.value()%2 == 0:
msg = QInputDialog.getInt(None, 'Generalizer', 'Look ahead (must be odd number):', par2.value()+1, 3, 999)
if not msg[1]: return
par2.setValue(msg[0])
par2.setToolTip('Look ahead')
elif algName[0] == algorithm['chaiken']: #'Chaiken\'s Algorithm':
par1 = QSpinBox()
par1.setRange(0, 99)
msg = QInputDialog.getInt(None, 'Generalizer', 'Level:', 1, 0, 99)
if not msg[1]: return
par1.setValue(msg[0])
par1.setToolTip('Level')
par2 = QDoubleSpinBox()
par2.setDecimals(2)
par2.setRange(1, 99.99)
msg = QInputDialog.getDouble(None, 'Generalizer', 'Weight:', 3., 1, 99.99)
if not msg[1]: return
par2.setValue(msg[0])
par2.setToolTip('Weight')
elif algName[0] == algorithm['reduction']:#'Vertex Reduction':
par1 = QDoubleSpinBox()
par1.setDecimals(4)
par1.setRange(0.0001, 9999999.9999)
msg = QInputDialog.getDouble(None, 'Generalizer', 'Threshold:', 0.0001, 0.0001, 9999999.9999, 4)
if not msg[1]: return
par1.setValue(msg[0])
par1.setToolTip('Threshold')
elif algName[0] == algorithm['DP']:#'Douglas-Peucker Algorithm':
par1 = QDoubleSpinBox()
par1.setDecimals(4)
par1.setRange(0.0001, 9999999.9999)
msg = QInputDialog.getDouble(None, 'Generalizer', 'Threshold:', 0.0001, 0.0001, 9999999.9999, 4)
if not msg[1]: return
par1.setValue(msg[0])
par1.setToolTip('Threshold')
elif algName[0] == algorithm['remove']:#'Remove small objects':
par1 = QDoubleSpinBox()
par1.setDecimals(4)
par1.setRange(0.0001, 9999999.9999)
msg = QInputDialog.getDouble(None, 'Generalizer', 'Threshold:', 0.0001, 0.0001, 9999999.9999, 4)
if not msg[1]: return
par1.setValue(msg[0])
par1.setToolTip('Threshold')
elif algName[0] == algorithm['lang']:#'Lang Algorithm':
par1 = QDoubleSpinBox()
par1.setDecimals(2)
par1.setRange(0.0001, 9999999.9999)
msg = QInputDialog.getDouble(None, 'Generalizer', 'Threshold:', 0.0001, 0.0001, 9999999.9999, 4)
if not msg[1]: return
par1.setValue(msg[0])
par1.setToolTip('Threshold')
par2 = QSpinBox()
par2.setRange(1, 9999)
msg = QInputDialog.getInt(None, 'Generalizer', 'Look ahead:', 8, 1, 999)
if not msg[1]: return
par2.setValue(msg[0])
par2.setToolTip('Look ahead')
elif algName[0] == algorithm['hermite']:#'Hermite Spline Interpolation':
par1 = QDoubleSpinBox()
par1.setDecimals(4)
par1.setRange(0.0001, 9999999.9999)
msg = QInputDialog.getDouble(None, 'Generalizer', 'Threshold:', 2., 0.0001, 9999999.9999, 4)
if not msg[1]: return
par1.setValue(msg[0])
par1.setToolTip('Threshold')
par2 = QDoubleSpinBox()
par2.setDecimals(2)
par2.setRange(0, 1)
msg = QInputDialog.getDouble(None, 'Generalizer', 'Thightness:', 0.5, 0, 1, 2)
if not msg[1]: return
par2.setValue(msg[0])
par2.setToolTip('Thightness')
elif algName[0] == algorithm['snakes']:#'Snakes algorithm':
par1 = QDoubleSpinBox()
par1.setDecimals(2)
par1.setRange(0, 9999.99)
msg = QInputDialog.getDouble(None, 'Generalizer', 'Alpha:', 1., 0.00, 9999.99, 2)
if not msg[1]: return
par1.setValue(msg[0])
par1.setToolTip('Alpha')
par2 = QDoubleSpinBox()
par2.setDecimals(2)
par2.setRange(0, 9999.99)
msg = QInputDialog.getDouble(None, 'Generalizer', 'Beta:', 0.5, 0., 9999.99, 2)
if not msg[1]: return
par2.setValue(msg[0])
par2.setToolTip('Beta')
elif algName[0] == algorithm['jenks']:#'Snakes algorithm':
par1 = QDoubleSpinBox()
par1.setDecimals(4)
par1.setRange(0, 9999999.9999)
msg = QInputDialog.getDouble(None, 'Generalizer', 'Threshold:', 0.0001, 0.00, 9999999.9999, 4)
if not msg[1]: return
par1.setValue(msg[0])
par1.setToolTip('Threshold')
"""par2 = QDoubleSpinBox()
par2.setRange(0, 180)
msg = QInputDialog.getDouble(None, 'Generalizer', 'Angle threshold:', 3, 0., 180, 2)
if not msg[1]: return
par2.setValue(msg[0])
par2.setToolTip('Angle threshold') """
elif algName[0] == algorithm['RW']:#Reumann-Witkam Algorithm
par1 = QDoubleSpinBox()
par1.setDecimals(4)
par1.setRange(0, 9999999.9999)
msg = QInputDialog.getDouble(None, 'Generalizer', 'Threshold:', 0.0001, 0.00, 9999999.9999, 4)
if not msg[1]: return
par1.setValue(msg[0])
par1.setToolTip('Threshold')
#QMessageBox.question(self, 'Generalizer', str(type(par1)))
itemAlg = QTableWidgetItem(algName[0])
itemAlg.setFlags(Qt.ItemIsEnabled)
if new:
self.ui.tblBatchAlg.setRowCount(self.ui.tblBatchAlg.rowCount()+1)
self.ui.tblBatchAlg.setItem(index, 0, itemAlg)
self.ui.tblBatchAlg.setCellWidget(index, 1, par1)
if par2 == None:
self.ui.tblBatchAlg.setCellWidget(index, 2, None)
par2 = QTableWidgetItem(0)
par2.setFlags(Qt.ItemIsSelectable)
self.ui.tblBatchAlg.setItem(index, 2, par2)
else:
self.ui.tblBatchAlg.setCellWidget(index, 2, par2)
def DelAlgorithm(self):
#del algorithm in batch mode
if self.ui.tblBatchAlg.currentRow() == -1:
QMessageBox.warning(self, 'Generalizer', 'Select algorithm to delete!')
return
alg = self.ui.tblBatchAlg.item(self.ui.tblBatchAlg.currentRow(), 0).text()
msg = QMessageBox.question(self, 'Generalizer', 'Do you want to delete %s' % (alg), QMessageBox.Yes | QMessageBox.No)
if msg == QMessageBox.Yes:
self.ui.tblBatchAlg.removeRow(self.ui.tblBatchAlg.currentRow())
def BatchOn(self, state):
#set batch mode on/off
if state == 0:
self.ui.stackBatch.setCurrentIndex(0)
else:
self.ui.stackBatch.setCurrentIndex(1)
def showHelp(self):
#show information about plugin
QMessageBox.information(self, 'Generalizer', """Generalizer
Version 0.5
Created by
Piotr Pociask
This plugin is marked as experimental.
If you find any bugs or have suggestions,
please contact with me:
opengis84 (at) gmail (dot) com
""")
def outFile(self):
"""Open a file save dialog and set the output file path."""
outFilePath = saveDialog(self)
if not outFilePath:
return
self.ui.eOutput.setText(outFilePath)
def outDir(self):
#select directory to save layer(s) in created batch mode
outPath = openDir(self)
if outPath:
self.ui.eDir.setText(outPath)
def cbChange(self, index):
#set parameters after algorithm change
if index == 0: self.ui.cbAlgorithm.setCurrentIndex(1)
elif index == 1: self.ui.stackOptions.setCurrentIndex(index-1) #generalization
elif index == 2: self.ui.cbAlgorithm.setCurrentIndex(3)
elif index < 8: self.ui.stackOptions.setCurrentIndex(index-2) #simplify
elif index == 8: self.ui.cbAlgorithm.setCurrentIndex(9)
else: self.ui.stackOptions.setCurrentIndex(index-3) #smooth
def GetArguments(self, par1=-1, par2=-1):
#set parameters to algorithm
if not self.ui.cbBatch.checkState():
arguments = {}
arguments['remove_thresh'] = self.ui.sbRemove_thresh.value()
arguments['dp_thresh'] = self.ui.sbDP_thresh.value()
arguments['lang_thresh'] = self.ui.sbLang_thresh.value()
arguments['lang_LA'] = self.ui.sbLang_LA.value()
arguments['reduction_thresh'] = self.ui.sbReduction_thresh.value()
arguments['boyle_LA'] = self.ui.sbBoyle_LA.value()
arguments['slide_slide'] = self.ui.sbSlide_slide.value()
arguments['slide_LA'] = self.ui.sbSlide_LA.value()
arguments['dist_slide'] = self.ui.sbDist_slide.value()
arguments['dist_LA'] = self.ui.sbDist_LA.value()
arguments['chaiken_level'] = self.ui.sbChaiken_level.value()
arguments['chaiken_weight'] = self.ui.sbChaiken_weight.value()
arguments['hermite_thresh'] = self.ui.sbHermite_steps.value()
arguments['hermite_tightness'] = self.ui.sbHermite_tightness.value()
arguments['jenks_thresh'] = self.ui.sbJenks_thresh.value()
arguments['jenks_angle'] = self.ui.sbJenks_angle.value()
arguments['snakes_alpha'] = self.ui.sbSnakes_alpha.value()
arguments['snakes_beta'] = self.ui.sbSnakes_beta.value()
arguments['rw_thresh'] = self.ui.sbRW_thresh.value()
else:
arguments = {}
arguments['remove_thresh'] = par1
arguments['dp_thresh'] = par1
arguments['lang_thresh'] = par1
arguments['lang_LA'] = par2
arguments['reduction_thresh'] = par1
arguments['boyle_LA'] = par1
arguments['slide_slide'] = par1
arguments['slide_LA'] = par2
arguments['dist_slide'] = par1
arguments['dist_LA'] = par2
arguments['chaiken_level'] = par1
arguments['chaiken_weight'] = par2
arguments['hermite_thresh'] = par1
arguments['hermite_tightness'] = par2
arguments['jenks_thresh'] = par1
arguments['jenks_angle'] = par2
arguments['snakes_alpha'] = par1
arguments['snakes_beta'] = par2
arguments['rw_thresh'] = par1
if (arguments['slide_LA']%2 == 0) or (arguments['dist_LA']%2 == 0):
QMessageBox.critical(None, 'Generalizer', 'Look ehead parameter must be odd number!')
return None
else:
return arguments
def GetFunction(self, funcName):
#set function from name
global algorithm
if funcName == algorithm['boyle']:#'Boyle\'s Forward-Looking Algorithm':
return self.boyle
elif funcName == algorithm['sliding']:#'McMaster\'s Sliding Averaging Algorithm':
return self.sliding_averaging
elif funcName == algorithm['distance']:#'McMaster\'s Distance-Weighting Algorithm':
return self.distance_weighting
elif funcName == algorithm['chaiken']:#'Chaiken\'s Algorithm':
return self.chaiken
elif funcName == algorithm['reduction']:#'Vertex Reduction':
return self.vertex_reduction
elif funcName == algorithm['DP']:#'Douglas-Peucker Algorithm':
return self.douglas_peucker
elif funcName == algorithm['remove']:#'Remove small objects':
return self.remove
elif funcName == algorithm['lang']:#'Lang Algorithm':
return self.lang
elif funcName == algorithm['hermite']:#'Hermite Spline Interpolation':
return self.hermite
elif funcName == algorithm['jenks']:#'Jenk's Algorithm':
return self.jenks
elif funcName == algorithm['snakes']:#'Snakes':
return self.snakes
elif funcName == algorithm['RW']:#'Reumann-Witkam Algorithm':
return self.reumann_witkam
def NameFromFunc(self, func, arguments):
if func == self.boyle:
return '-boyle_LA-' + str(arguments['boyle_LA'])
elif func == self.sliding_averaging:
return '-slide_slide-' + str(arguments['slide_slide']) + '_LA-' + str(arguments['slide_LA'])
elif func == self.distance_weighting:
return '-dist_slide-' + str(arguments['dist_slide']) + '_LA-' + str(arguments['dist_LA'])
elif func == self.chaiken:
return '-chaiken_level-' + str(arguments['chaiken_level']) + '_weight-' + str(arguments['chaiken_weight'])
elif func == self.vertex_reduction:
return '-reduction_thresh-' + str(arguments['reduction_thresh'])
elif func == self.douglas_peucker:
return '-DP_thresh-' + str(arguments['dp_thresh'])
elif func == self.remove:
return '-remove_thresh-' + str(arguments['remove_thresh'])
elif func == self.lang:
return '-lang_thresh-' + str(arguments['lang_thresh']) + '_LA-' + str(arguments['lang_LA'])
elif func == self.hermite:
return '-hermite_thresh-' + str(arguments['hermite_thresh']) + '_tight-' + str(arguments['hermite_tightness'])
elif func == self.jenks:
return '-jenks_thresh-' + str(arguments['jenks_thresh']) + '_angle-' + str(arguments['jenks_angle'])
elif func == self.snakes:
return '-snakes_alpha-' + str(arguments['snakes_alpha']) + '_beta-' + str(arguments['snakes_beta'])
elif func == self.reumann_witkam:
return '-RW_thresh-' + str(arguments['rw_thresh'])
def LoadLayers(self, fileList):
#load created layer
msg = QMessageBox.question(self, 'Generalizer', 'New layer(s) created. \n Add to TOC?', QMessageBox.Yes | QMessageBox.No, QMessageBox.Yes)
if msg == QMessageBox.Yes:
for filePath in fileList:
if "\\" in filePath:
out_name = filePath[(len(filePath) - filePath.rfind("\\")) - 1:]
else:
out_name = filePath[(len(filePath) - filePath.rfind("/")) - 1:]
if out_name.endswith(".shp"):
out_name = out_name[:len(out_name) - 4]
self.iface.addVectorLayer(filePath, out_name, "ogr")
def doGeneralize(self, iLayerName, iLayer, oPath, func, arguments):
#do calculations
fet = QgsFeature()
iProvider = iLayer.dataProvider()
fields = iProvider.fields()
if oPath == 'memory': #create memory layer
if iLayer.wkbType() == QGis.WKBLineString:
mLayer = QgsVectorLayer('LineString', iLayerName + '_memory', 'memory')#self.NameFromFunc(func, arguments), 'memory')
else:
mLayer = QgsVectorLayer('MultiLineString', iLayerName + '_memory', 'memory')#self.NameFromFunc(func, arguments), 'memory')
mProvider = mLayer.dataProvider()
mProvider.addAttributes( [key for key in fields] )
for feat in iProvider.getFeatures():
geom = feat.geometry()
if geom.isMultipart():
lm = geom.asMultiPolyline()
l = []
for ls in lm:
p = func(ls, **arguments)
l2 = []
for n in range(p.n_points):
l2.append(QgsPoint(p.x[n], p.y[n]))
if len(l2) > 1:
l.append(l2)
if len(l) > 1:
fet.setGeometry(QgsGeometry.fromMultiPolyline(l))
elif len(l) == 1: #jesli z obiektu wieloczesciowego zostaje tylko jedna linia (np. przy usuwaniu malych obiektow)
fet.setGeometry(QgsGeometry.fromPolyline(l[0]))
else:
ls = geom.asPolyline()
p = func(ls, **arguments)
l = []
for n in range(p.n_points):
l.append(QgsPoint(p.x[n], p.y[n]))
if len(l) > 1:
fet.setGeometry(QgsGeometry.fromPolyline(l))
else:
continue #jak linia jest pusta to przejdz do nastepnej
fet.setAttributes(feat.attributes())
mProvider.addFeatures([fet])
mLayer.updateFields()
mLayer.updateExtents()
return mLayer
else: #write shapefile on disk
writer = QgsVectorFileWriter(oPath, iProvider.encoding(), fields, QGis.WKBLineString, iLayer.crs())
if writer.hasError() != QgsVectorFileWriter.NoError:
QMessageBox.critical(None, 'Generalizer', 'Error when creating shapefile: %s' % (writer.hasError()))
for feat in iProvider.getFeatures():
geom = feat.geometry()
if geom.isMultipart():
lm = geom.asMultiPolyline()
#QInputDialog.getText( self.iface.mainWindow(), "m", "e", QLineEdit.Normal, str(lm) )
l = []
for ls in lm:
p = func(ls, **arguments)
l2 = []
#QInputDialog.getText( self.iface.mainWindow(), "m", "e", QLineEdit.Normal, str(p.n_points) )
for n in range(p.n_points):
l2.append(QgsPoint(p.x[n], p.y[n]))
if len(l2) > 1:
l.append(l2)
if len(l) > 1:
#QInputDialog.getText( self.iface.mainWindow(), "m", "e", QLineEdit.Normal, str(l) )
fet.setGeometry(QgsGeometry.fromMultiPolyline(l))
else:
ls = geom.asPolyline()
#QInputDialog.getText( self.iface.mainWindow(), "m", "e", QLineEdit.Normal, str(ls) )
p = func(ls, **arguments)
l = []
for n in range(p.n_points):
l.append(QgsPoint(p.x[n], p.y[n]))
if len(l) > 1:
#QInputDialog.getText( self.iface.mainWindow(), "m", "e", QLineEdit.Normal, str(l) )
fet.setGeometry(QgsGeometry.fromPolyline(l))
fet.setAttributes(feat.attributes())
writer.addFeature(fet)
del writer
return self.ui.eOutput.text()
def batchGeneralize(self, layers):
outNames = []
for layer in layers:
vLayer = getMapLayerByName(layer)
for i in range(self.ui.tblBatchAlg.rowCount()):
#QInputDialog.getText( self.iface.mainWindow(), "m", "e", QLineEdit.Normal, str(i) )
alg = self.ui.tblBatchAlg.item(i, 0).text()
func = self.GetFunction(alg)
par1 = self.ui.tblBatchAlg.cellWidget(i,1).value()
if not func in [self.remove, self.douglas_peucker, self.vertex_reduction, self.boyle, self.jenks, self.reumann_witkam]:
par2 = self.ui.tblBatchAlg.cellWidget(i,2).value()
else:
par2 = -1
#QInputDialog.getText( self.iface.mainWindow(), "m", "e", QLineEdit.Normal, str(par2) )
arguments = self.GetArguments(par1, par2)
if self.ui.cbOutDir.isChecked() and i == self.ui.tblBatchAlg.rowCount()-1:
#QInputDialog.getText( self.iface.mainWindow(), "m", "e", QLineEdit.Normal, str(i) )
path = self.ui.eDir.text()
if path.contains("\\"):
out_name = path + '\\' + layer + '_new.shp'
else:
out_name = path + '/' + layer + '_new.shp'
outNames.append(out_name)
vLayer = self.doGeneralize(layer, vLayer, out_name, func, arguments)
else:
vLayer = self.doGeneralize(layer, vLayer, 'memory', func, arguments)
if not self.ui.cbOutDir.isChecked():
QgsMapLayerRegistry.instance().addMapLayer(vLayer)
if self.ui.cbOutDir.isChecked():
self.LoadLayers(outNames)
def generalize(self):
if self.ui.cbBatch.isChecked():
if self.ui.cbOutDir.isChecked():
if self.ui.eDir.text() == '':
QMessageBox.critical(None, 'Generalizer', 'Enter output directory!')
return
layers = [self.ui.lstLayers.item(i).text() for i in range(self.ui.lstLayers.count()) if self.ui.lstLayers.item(i).checkState() ]
self.batchGeneralize(layers)
#QInputDialog.getText( self.iface.mainWindow(), "m", "e", QLineEdit.Normal, str(layers) )
else:
if self.ui.cbInput.currentText() == '':
QMessageBox.critical(None, 'Generalizer', 'No line layers!')
return
arguments = self.GetArguments()
#QInputDialog.getText( self.iface.mainWindow(), "m", "e", QLineEdit.Normal, str(arguments) )
if arguments == None:
return
func = self.GetFunction(self.ui.cbAlgorithm.currentText())
if self.ui.cbOutFile.isChecked():
if self.ui.eOutput.text() == '':
QMessageBox.critical(None, 'Generalizer', 'Enter output file name!')
return
filePath = self.doGeneralize(self.ui.cbInput.currentText(), getMapLayerByName(self.ui.cbInput.currentText()), self.ui.eOutput.text(), func, arguments)
self.LoadLayers([filePath])
else:
mLayer = self.doGeneralize(self.ui.cbInput.currentText(), getMapLayerByName(self.ui.cbInput.currentText()), 'memory', func, arguments)
QgsMapLayerRegistry.instance().addMapLayer(mLayer)
#self.close()
#refresh layer list
self.layerList = getLayersNames()
self.ui.cbInput.clear()
self.ui.lstLayers.clear()
self.ui.cbInput.addItems(self.layerList)
self.ui.lstLayers.addItems(self.layerList)
[self.ui.lstLayers.item(i).setCheckState(Qt.Unchecked) for i in range(self.ui.lstLayers.count()) ]
def remove(self, l, **kwargs):
#Remove Small Objects
thresh = kwargs['remove_thresh']
length = 0.
p = points.Vect_new_line_struct(l)
p1 = points.point()
p2 = points.point()
for i in range(p.n_points-1):
points.point_assign(p, i, p1)
points.point_assign(p, i+1, p2)
length = length + points.point_dist(p1, p2)
#QInputDialog.getText( self.iface.mainWindow(), "m", "e", QLineEdit.Normal, str( length ) )
if length < thresh:
p.x = []
p.y = []
p.n_points = 0
#QInputDialog.getText( self.iface.mainWindow(), "m", "e", QLineEdit.Normal, str( p.x ) )
return p
def boyle(self,l, **kwargs):
#Boyle's Forward-Looking Algorithm
p = points.Vect_new_line_struct(l)
n = smooth.boyle(p, kwargs['boyle_LA'])
return p
def sliding_averaging(self,l, **kwargs):
#McMaster's Sliding Averaging Algorithm
p = points.Vect_new_line_struct(l)
n = smooth.sliding_averaging(p, kwargs['slide_slide'], kwargs['slide_LA'])
return p
def distance_weighting(self,l, **kwargs):
#McMaster's Distance Weighting Algorithm
p = points.Vect_new_line_struct(l)
n = smooth.distance_weighting(p, kwargs['dist_slide'], kwargs['dist_LA'])
return p
def chaiken(self,l, **kwargs):
#Chaiken's Algorithm
p = points.Vect_new_line_struct(l)
#QInputDialog.getText( self.iface.mainWindow(), "m", "e", QLineEdit.Normal, str(p.n_points) )
n = smooth.chaiken(p, kwargs['chaiken_level'], kwargs['chaiken_weight'])
return p
def vertex_reduction(self,l, **kwargs):
#Vertex Reduction
#QInputDialog.getText( self.iface.mainWindow(), "m", "e", QLineEdit.Normal, str(l) )
p = points.Vect_new_line_struct(l)
n = simplify.vertex_reduction(p, kwargs['reduction_thresh'])
return p
def douglas_peucker(self,l, **kwargs):
#Douglas-peucker Algorithm
tmp = simplify.douglas_peucker(l, kwargs['dp_thresh'])
p = points.Vect_new_line_struct(tmp)
return p
def lang(self,l, **kwargs):
#Vertex Reduction
p = points.Vect_new_line_struct(l)
n = simplify.lang(p, kwargs['lang_thresh'], kwargs['lang_LA'])
return p
def hermite(self,l, **kwargs):
#Vertex Reduction
p = points.Vect_new_line_struct(l)
n = smooth.hermite(p, kwargs['hermite_thresh'], kwargs['hermite_tightness'])
return p
def jenks(self,l, **kwargs):
#Jenk's Algorithm
#QInputDialog.getText( self.iface.mainWindow(), "m", "e", QLineEdit.Normal, str(kwargs['jenks_angle']) )
p = points.Vect_new_line_struct(l)
n = simplify.jenks(p, kwargs['jenks_thresh'], kwargs['jenks_angle'])
return p
def snakes(self,l, **kwargs):
#Snakes
p = points.Vect_new_line_struct(l)
n = smooth.snakes(p, kwargs['snakes_alpha'], kwargs['snakes_beta'])
return p
def reumann_witkam(self,l, **kwargs):
#Snakes
p = points.Vect_new_line_struct(l)
n = simplify.reumann_witkam(p, kwargs['rw_thresh'])
return p
