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crosssectioncreator.py
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crosssectioncreator.py
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from __future__ import unicode_literals
from __future__ import absolute_import
# system modules
import os
from qgis import processing
import tempfile
import webbrowser
# QGIS modules
from qgis.core import *
from qgis.PyQt.QtWidgets import *
from qgis.PyQt import uic
from qgis.utils import iface
from qgis.gui import *
from qgis.PyQt.QtCore import *
from qgis.PyQt.QtGui import *
from qgis.PyQt.QtWidgets import *
from qgis.PyQt import uic
from .environment import get_ui_path
UI_PATH = get_ui_path('ui_crosssectioncreator.ui')
class PluginDialog(QDialog):
def __init__(self, iface, parent=None, flags=Qt.WindowFlags()):
QDialog.__init__(self, parent, flags)
uic.loadUi(UI_PATH, self)
self.iface = iface
self.PolygonLayerBox.setEnabled(False)
self.MaxLengthBox.setEnabled(False)
self.label_26.setEnabled(False)
self.label_27.setEnabled(False)
self.RiverShapeBox.setFilters(QgsMapLayerProxyModel.LineLayer)
self.ElevationBox.setFilters(QgsMapLayerProxyModel.RasterLayer)
self.PolygonLayerBox.setFilters(QgsMapLayerProxyModel.PolygonLayer)
self.browseButton.clicked.connect(self.onBrowseButtonClicked)
self.HelpButton.clicked.connect(self.Help)
self.PolygonBox.stateChanged.connect(self.RiverPolygonClicked)
def onBrowseButtonClicked(self):
currentFolder = self.filename_edit.text()
folder = QFileDialog.getExistingDirectory(self.iface.mainWindow(), 'Cross Section Creator', currentFolder)
if folder != '':
self.filename_edit.setText(folder)
def Help(self):
webbrowser.open("https://promaides.myjetbrains.com/youtrack/articles/PMDP-A-62/Cross-Section-Creator")
def RiverPolygonClicked(self):
if self.PolygonBox.isChecked():
self.PolygonLayerBox.setEnabled(True)
self.MaxLengthBox.setEnabled(True)
self.label_26.setEnabled(True)
self.label_27.setEnabled(True)
self.LengthBox.setEnabled(False)
else:
self.PolygonLayerBox.setEnabled(False)
self.MaxLengthBox.setEnabled(False)
self.label_26.setEnabled(False)
self.label_27.setEnabled(False)
self.LengthBox.setEnabled(True)
class CrossSectionCreator(object):
def __init__(self, iface):
self.iface = iface
self.dialog = None
self.cancel = False
self.act = QAction('Cross Section Creator', iface.mainWindow())
self.act.triggered.connect(self.execDialog)
def initGui(self, menu=None):
if menu is not None:
menu.addAction(self.act)
else:
self.iface.addToolBarIcon(self.act)
def unload(self, menu=None):
if menu is None:
menu.removeAction(self.act)
else:
self.iface.removeToolBarIcon(self.act)
def execDialog(self):
"""
"""
self.dialog = PluginDialog(self.iface, self.iface.mainWindow())
#self.dialog.accepted.connect(self.execTool)
self.dialog.rejected.connect(self.quitDialog)
self.dialog.setModal(False)
self.act.setEnabled(False)
self.dialog.show()
self.dialog.RunButton.clicked.connect(self.WritePleaseWait)
def scheduleAbort(self):
self.cancel = True
def quitDialog(self):
try:
self.dialog.hide()
self.dialog = None
self.act.setEnabled(True)
self.cancel = False
except:
pass
def WritePleaseWait(self):
if type(self.dialog.RiverShapeBox.currentLayer()) == type(None):
self.iface.messageBar().pushCritical(
'Cross Section Creator',
'No River Shape Layer Selected !'
)
return
if type(self.dialog.ElevationBox.currentLayer()) == type(None):
self.iface.messageBar().pushCritical(
'Cross Section Creator',
'No Elevation Layer Selected !'
)
return
if type(self.dialog.PolygonLayerBox.currentLayer()) == type(None) and self.dialog.PolygonBox.isChecked():
self.iface.messageBar().pushCritical(
'Cross Section Creator',
'No River Shape Polygon Selected !'
)
return
if self.dialog.filename_edit.text() == "":
self.iface.messageBar().pushCritical(
'Cross Section Creator',
'No Output Location Selected !'
)
return
self.iface.messageBar().pushInfo(
'Cross Section Creator',
'Processing, Please Wait !'
)
QTimer.singleShot(100, self.Run)
resultlayer=[]
def Run(self):
if self.dialog.PolygonBox.isChecked():
ProfileLengths = self.dialog.MaxLengthBox.value()
else:
ProfileLengths = self.dialog.LengthBox.value()
if self.dialog.PolygonBox.isChecked():
outputlocation = tempfile.gettempdir() + "/crosssections.shp"
else:
outputlocation = self.dialog.filename_edit.text() + "/crosssections.shp"
params = {'DEM': self.dialog.ElevationBox.currentLayer().dataProvider().dataSourceUri(), 'DIST_LINE': self.dialog.DistanceBox.value(), 'DIST_PROFILE': ProfileLengths,
'LINES': self.dialog.RiverShapeBox.currentLayer().dataProvider().dataSourceUri(),
'NUM_PROFILE': 3, 'PROFILES': outputlocation}
try:
result =processing.run('saga:crossprofiles', params)
except:
result =processing.run('sagang:crossprofiles', params)
try:
self.resultlayer = QgsVectorLayer(outputlocation, "Cross Sections", "ogr")
except:
self.iface.messageBar().pushCritical(
'Cross Section Creator',
'Operation Failed ! '
)
return
self.resultlayer.setName('Cross Sections')
self.resultlayer.dataProvider().addAttributes(
[QgsField("Stations", QVariant.Double), QgsField("Names", QVariant.String), QgsField("Type", QVariant.String)])
self.resultlayer.updateFields()
prov = self.resultlayer.dataProvider()
# lookup index of fields using their names
ProfileType = self.resultlayer.fields().lookupField('Type')
Part=self.resultlayer.fields().lookupField('PART')
X000 = self.resultlayer.fields().lookupField('X000')
X001 = self.resultlayer.fields().lookupField('X001')
X002 = self.resultlayer.fields().lookupField('X002')
field_ids=[Part,X000,X001,X002]
self.resultlayer.dataProvider().deleteAttributes(field_ids)
self.resultlayer.updateFields()
self.resultlayer.startEditing()
for feat in self.resultlayer.getFeatures():
atts = {ProfileType: "river"}
# call changeAttributeValues(), pass feature id and attribute dictionary
prov.changeAttributeValues({feat.id(): atts})
feat['Type'] = "river"
self.resultlayer.updateFeature(feat)
self.resultlayer.commitChanges()
self.resultlayer.updateFields()
if self.dialog.PolygonBox.isChecked():
#create temporary layer for checking
try:
if os.path.isfile(tempfile.gettempdir() + "/crosssectionstemp.shp"):
os.remove(tempfile.gettempdir() + "/crosssectionstemp.shp")
except:
pass
outputlocationtemp = tempfile.gettempdir() + "/crosssectionstemp.shp"
paramstemp = {'DEM': self.dialog.ElevationBox.currentLayer().dataProvider().dataSourceUri(),
'DIST_LINE': self.dialog.DistanceBox.value(), 'DIST_PROFILE': 1,
'LINES': self.dialog.RiverShapeBox.currentLayer().dataProvider().dataSourceUri(),
'NUM_PROFILE': 3, 'PROFILES': outputlocationtemp}
try:
resulttemp = processing.run('saga:crossprofiles', paramstemp)
except:
resulttemp = processing.run('sagang:crossprofiles', paramstemp)
resultlayertemp = QgsVectorLayer(outputlocationtemp, "Cross Sections temp", "ogr")
resultlayertemp.updateFields()
try:
if os.path.isfile(tempfile.gettempdir() + "/crosssectionstemp2.shp"):
os.remove(tempfile.gettempdir() + "/crosssectionstemp2.shp")
except:
pass
outputlocationmultipart = tempfile.gettempdir() + "/crosssectionstemp2.shp"
params = { 'INPUT' : self.resultlayer.dataProvider().dataSourceUri(), 'INPUT_FIELDS' : [], 'OUTPUT' : outputlocationmultipart, 'OVERLAY' : self.dialog.PolygonLayerBox.currentLayer().dataProvider().dataSourceUri(), 'OVERLAY_FIELDS' : [], 'OVERLAY_FIELDS_PREFIX' : '' }
result = processing.run('qgis:intersection', params)
resultlayermultipart = QgsVectorLayer(outputlocationmultipart, "Cross Sections multipart", "ogr")
#multipart to singlepart
resultlayermultipart.startEditing()
outputlocationsinglepart = self.dialog.filename_edit.text() + "/crosssections.shp"
try:
if os.path.isfile(self.dialog.filename_edit.text() + "/crosssections.shp"):
outputlocationsinglepart = outputlocationsinglepart.replace('.shp', '_new') + ".shp"
except:
pass
params2={ 'INPUT' : resultlayermultipart.dataProvider().dataSourceUri(), 'OUTPUT' : outputlocationsinglepart }
processing.run("qgis:multiparttosingleparts", params2)
resultlayermultipart.commitChanges()
resultlayermultipart.updateFields()
resultlayersinglepart=QgsVectorLayer(outputlocationsinglepart, "Cross Sections", "ogr")
QgsProject.instance().addMapLayer(resultlayersinglepart)
resultlayersinglepart.setName('Cross Sections')
resultlayersinglepart.startEditing()
for feat in resultlayertemp.getFeatures():
for feature in resultlayersinglepart.getFeatures():
if feat["ID"] == feature["ID"]:
if feature.geometry().distance(feat.geometry())>1:
resultlayersinglepart.deleteFeature(feature.id())
resultlayersinglepart.commitChanges()
resultlayersinglepart.updateFields()
self.resultlayer = resultlayersinglepart
QgsProject.instance().addMapLayer(self.resultlayer)
try:
self.resultlayer.renderer().symbol().setWidth(0.7)
self.resultlayer.triggerRepaint()
except:
pass
#reverse
self.resultlayer.startEditing()
for feature in self.resultlayer.getFeatures():
line = []
buff = feature.geometry()
for p in buff.vertices():
line.append(p)
line.reverse()
newgeom = QgsGeometry.fromPolyline(line)
self.resultlayer.changeGeometry(feature.id(), newgeom)
self.resultlayer.commitChanges()
self.resultlayer.updateFields()
QTimer.singleShot(100, self.DeleteIntersects)
def DeleteIntersects(self):
if self.dialog.DeleteBox.isChecked():
self.resultlayer.startEditing()
for j in range(self.resultlayer.featureCount()):
id = []
for i in range(self.resultlayer.featureCount()):
id.append([])
i = 0
for f1 in self.resultlayer.getFeatures():
id[i].append(f1.id())
for f2 in self.resultlayer.getFeatures():
if f1.geometry().distance(f2.geometry()) < 0.1 and f1.id() != f2.id():
id[i].append(f2.id())
i = i + 1
maxlength = 0
count = 0
for list in id:
if len(list) >= maxlength:
maxlength = len(list)
maxcount = count
count = count + 1
if maxlength == 1:
break
featureidtoberemoved = id[maxcount][0]
self.resultlayer.deleteFeature(featureidtoberemoved)
self.resultlayer.updateFields()
self.resultlayer.commitChanges()
self.resultlayer.updateFields()
QTimer.singleShot(20, self.Success)
def Success(self):
self.resultlayer.startEditing()
prov = self.resultlayer.dataProvider()
ID = self.resultlayer.fields().lookupField('ID')
Stations = self.resultlayer.fields().lookupField('Stations')
Names = self.resultlayer.fields().lookupField('Names')
field_ids = [ID]
self.resultlayer.dataProvider().deleteAttributes(field_ids)
self.resultlayer.updateFields()
self.resultlayer.dataProvider().addAttributes(
[QgsField("ID", QVariant.Double)])
self.resultlayer.updateFields()
for feat in self.resultlayer.getFeatures():
FeutureID=feat.id()
atts = {ID: FeutureID,Stations: self.dialog.DistanceBox.value()*FeutureID, Names: self.dialog.NameBox.text() + "_" + str(FeutureID)}
prov.changeAttributeValues({feat.id(): atts})
feat['ID'] = FeutureID
feat['Stations'] = self.dialog.StationingOffsetBox.value() + self.dialog.DistanceBox.value() * (-FeutureID)
feat['Names'] = self.dialog.NameBox.text() + "_" + str(FeutureID)
self.resultlayer.updateFeature(feat)
for feat in self.resultlayer.getFeatures():
for field in feat.fields().names():
if feat[field] == None:
feat[field] = '0'
self.resultlayer.updateFeature(feat)
self.resultlayer.commitChanges()
self.resultlayer.updateFields()
self.iface.messageBar().pushSuccess(
'Cross Section Creator',
'Operation finished successfully!'
)
self.quitDialog()
#def execTool(self):
#print("hello")