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AdressenGeocodieren.py
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AdressenGeocodieren.py
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# -*- coding: utf-8 -*-
import processing
from PyQt5.QtCore import (QCoreApplication,
QVariant)
from qgis.core import (QgsProcessing,
QgsProcessingAlgorithm,
QgsProcessingParameterFeatureSource,
QgsProcessingParameterField,
QgsProcessingParameterFolderDestination,
QgsProcessingParameterBoolean,
QgsMessageLog,
QgsField,
QgsExpression,
QgsGeometry,
QgsPointXY,
QgsFeature,
QgsVectorLayer,
QgsVectorFileWriter,
QgsProject)
from qgis.utils import iface
import pandas as pd
import os
import urllib.request
import zipfile
class allocateAddresses(QgsProcessingAlgorithm):
"""
This script geocodes addresses using official address data in NRW - Germany
"""
inputTab = 'inputTab'
street = 'street'
hnr = 'hnr'
hnrz = 'hnrz'
ags = 'ags'
redownload = 'redownload'
OUTPUT = 'output'
def initAlgorithm(self, config = None):
# define input parameters
self.addParameter(
QgsProcessingParameterFeatureSource(
self.inputTab,
self.tr('Zu geocodierende Adressen als CSV'),
[QgsProcessing.TypeFile]
)
)
self.addParameter(
QgsProcessingParameterField(
self.street,
self.tr('Spalte mit Straßennamen'),
None,
self.inputTab
)
)
self.addParameter(
QgsProcessingParameterField(
self.hnr,
self.tr('Spalte mit Hausnummern'),
None,
self.inputTab
)
)
self.addParameter(
QgsProcessingParameterField(
self.hnrz,
self.tr('Spalte mit Hausnummer-Zusätzen'),
None,
self.inputTab
)
)
self.addParameter(
QgsProcessingParameterField(
self.ags,
self.tr('Spalte mit amtlichem Gemeindeschlüssel (AGS)'),
None,
self.inputTab
)
)
self.addParameter(
QgsProcessingParameterBoolean(
self.redownload,
self.tr('Lade aktuelle amtliche Adressen')
)
)
self.addParameter(
QgsProcessingParameterFolderDestination(
self.OUTPUT,
self.tr('Ausgabe-Ordner')
)
)
def processAlgorithm(self, parameters, context, feedback):
# get inputs
inputTab = self.parameterAsVectorLayer(parameters, self.inputTab, context)
street = self.parameterAsString(parameters, self.street, context)
hnr = self.parameterAsString(parameters, self.hnr, context)
hnrz = self.parameterAsString(parameters, self.hnrz, context)
ags = self.parameterAsString(parameters, self.ags, context)
redownload = self.parameterAsString(parameters, self.redownload, context)
outDir = self.parameterAsString(parameters, self.OUTPUT, context)
allAtts = inputTab.dataProvider().fields().names()
# import qgis attribute table as pandas data frame
QgsMessageLog.logMessage('Converting QGIS table to pandas data frame.', 'User notification', 0)
atts = pd.DataFrame([], columns = allAtts)
i = 0
for feature in inputTab.getFeatures():
atts.loc[i] = feature.attributes()
i += 1
# download official address data
thisScript_path = os.path.dirname(os.path.realpath(__file__))
of_path = thisScript_path + "\\gebref_EPSG4647_ASCII\\gebref.txt"
if (os.path.isfile(of_path) == False) or (redownload == 'true'):
QgsMessageLog.logMessage('Downloading official address dataset.', 'User notification', 0)
url = 'https://www.opengeodata.nrw.de/produkte/geobasis/lika/alkis_sek/gebref/gebref_EPSG4647_ASCII.zip'
urllib.request.urlretrieve(url, thisScript_path + '\\gebref_EPSG4647_ASCII.zip')
with open(thisScript_path + '\\gebref_EPSG4647_ASCII.zip', 'rb') as f:
z = zipfile.ZipFile(f)
for name in z.namelist():
z.extract(name, thisScript_path + '\\gebref_EPSG4647_ASCII\\')
# import and prepare official address data as pandas data frame
def loadOfficialAddresses(of_path):
# load data from file
QgsMessageLog.logMessage('Loading official address data set.', 'User notification', 0)
of = pd.read_csv(of_path,
sep = ';', decimal = ',', header = None,
encoding = 'UTF-8')
# add column names
of.columns = list(map(str, list(range(0,14))))
# build ags identifier (for consistent community identification)
QgsMessageLog.logMessage('Building AGS identifier.', 'User notification', 0)
of['agsField'] = of['3'].apply(str).str.cat(of['4'].apply(str))
of['agsField'] = of['agsField'].str.cat(of['5'].apply(str))
# add prefix zeros for community number consistency
temp_str = of['6'].apply(str)
cond = temp_str.apply(len) == 1
temp_str.loc[cond] = '00' + temp_str.loc[cond]
cond = temp_str.apply(len) == 2
temp_str.loc[cond] = '0' + temp_str.loc[cond]
# add ags identifier to data frame
of['agsField'] = of['agsField'].str.cat(temp_str)
return of
of = loadOfficialAddresses(of_path)
# define function for building a key addressID field
def buildAddressID(inTable = atts, streetField = street,
housenumberField = hnr, housenumberappendixField = hnrz,
agsField = ags):
outTable = inTable
# build address ID
outTable['addressID'] = outTable[streetField].str.cat(outTable[housenumberField].apply(str), sep = "")
outTable['addressID'] = outTable['addressID'].str.cat(outTable[housenumberappendixField].apply(str), sep = "")
outTable['addressID'] = outTable['addressID'].str.cat(outTable[agsField].apply(str), sep = "_")
# replace characters for key field consistency
outTable['addressID'] = outTable['addressID'].str.lower()
outTable['addressID'] = outTable['addressID'].str.replace('null', '')
outTable['addressID'] = outTable['addressID'].str.replace('nan', '')
outTable['addressID'] = outTable['addressID'].str.replace(' ', '')
outTable['addressID'] = outTable['addressID'].str.replace('-', '')
outTable['addressID'] = outTable['addressID'].str.replace('ß', 'ss')
outTable['addressID'] = outTable['addressID'].str.replace('ü', 'ue')
outTable['addressID'] = outTable['addressID'].str.replace('ö', 'oe')
outTable['addressID'] = outTable['addressID'].str.replace('ä', 'ae')
outTable['addressID'] = outTable['addressID'].str.replace('str.', 'str')
outTable['addressID'] = outTable['addressID'].str.replace('strße', 'str')
outTable['addressID'] = outTable['addressID'].str.replace('strasse', 'str')
outTable['addressID'] = outTable['addressID'].str.replace('straße', 'str')
outTable['addressID'] = outTable['addressID'].str.replace('strsse', 'str')
outTable['addressID'] = outTable['addressID'].str.replace('.', '')
return outTable
# build addressID fields
QgsMessageLog.logMessage('Building key address ID field for spreadsheet address data.', 'User notification', 0)
atts = buildAddressID()
QgsMessageLog.logMessage('Building key address ID field for official address data set.', 'User notification', 0)
of = buildAddressID(inTable = of, streetField = '13',
housenumberField = '9', housenumberappendixField = '10',
agsField = 'agsField')
# join tables
QgsMessageLog.logMessage('Joining data sets.', 'User notification', 0)
joinTab = atts.join(of.set_index('addressID'), on = 'addressID')
# extract matched and not matched addresses
QgsMessageLog.logMessage('Writing joined data sets to file.', 'User notification', 0)
missingAdds = joinTab[joinTab['11'].isnull()]
joinTab = joinTab[joinTab['11'].notnull()]
missingAdds.to_csv(outDir + '/fehlendeAdressen_nichtInAmtlichenAdressverzeichnis.csv', index = False, encoding = 'ANSI')
joinTab.to_csv(outDir + '/abgeglicheneAdressen_imAmtlichenAdressverzeichnis.csv', index = False, encoding = 'ANSI')
# add key id for joining to original data table
atts['keyID'] = list(range(0, len(atts.index)))
atts.to_csv(outDir + '/inTabelle_mitSchluessel.csv', index = False, encoding = 'ANSI')
# convert coordinates to points
def convertCoordinatesToPoints(inTable = joinTab):
QgsMessageLog.logMessage('Converting XY coordinates to spatial points.', 'User notification', 0)
# create temporary vector layer
tempLyr = QgsVectorLayer('Point', 'temporary_points', 'memory')
# define coordinate system
CRS = tempLyr.crs()
CRS.createFromId(4647)
tempLyr.setCrs(CRS)
# start editing
tempLyr.startEditing()
# create attribute fields
for f in list(range(0, len(atts.columns))):
tempLyr.dataProvider().addAttributes([QgsField(atts.columns[f], QVariant.String)])
tempLyr.updateFields()
# iterate over each address and add geometry
for p in list(range(0, len(joinTab['11']))):
QgsMessageLog.logMessage('Creating features...(' + str(p) + '/' + str(len(joinTab['11'])) + ')', 'User notification', 0)
# extract coordinates
x = joinTab['11'].iloc[p]
y = joinTab['12'].iloc[p]
# convert coordinates to geometry
pGeom = QgsGeometry.fromPointXY(QgsPointXY(x, y))
# create feature
feature = QgsFeature()
# set coordinates for the new feature
feature.setGeometry(pGeom)
# add attributes
feature.setAttributes(joinTab.values.tolist()[p])
# add feature to temporary layer
tempLyr.dataProvider().addFeature(feature)
# update the extent of the layer
tempLyr.updateExtents()
# end editing
tempLyr.commitChanges()
# write temporary layer to file
QgsMessageLog.logMessage('Wrting results to file.', 'User notification', 0)
outPath = outDir + '\\geocodierteAdressen_imAmtlichenAdressverzeichnis.gpkg'
QgsVectorFileWriter.writeAsVectorFormat(tempLyr, outPath, 'ANSI', tempLyr.crs(), 'GPKG')
return tempLyr
# execute function
outLyr = convertCoordinatesToPoints()
return {}
def name(self):
return 'allocateAddresses'
def displayName(self):
return self.tr('Mit amtlichen Adressen geocodieren')
def group(self):
return self.tr('Raumanalaysen - Christian Mueller')
def groupId(self):
return 'Raumanalysen'
def tr(self, string):
return QCoreApplication.translate('Processing', string)
def createInstance(self):
return allocateAddresses()