def calcIsoTinInterpolation(self, iso_point_layer, resolution,
interpolation_raster_path):
if self.AnalysisCrs.isGeographic():
raise QgsProcessingException(
'The TIN-Interpolation algorithm in QGIS is designed to work with projected coordinate systems.Please use a projected coordinate system (eg. UTM zones) instead of geographic coordinate systems (eg. WGS84)!'
)
layer_data = QgsInterpolator.LayerData()
QgsInterpolator.LayerData
layer_data.source = iso_point_layer #in QGIS2: vectorLayer
layer_data.valueSource = QgsInterpolator.ValueAttribute
layer_data.interpolationAttribute = 1 #take second field to get costs
layer_data.sourceType = QgsInterpolator.SourcePoints
tin_interpolator = QgsTinInterpolator([layer_data],
QgsTinInterpolator.Linear)
rect = iso_point_layer.extent()
ncol = int((rect.xMaximum() - rect.xMinimum()) / resolution)
nrows = int((rect.yMaximum() - rect.yMinimum()) / resolution)
writer = QgsGridFileWriter(tin_interpolator, interpolation_raster_path,
rect, ncol, nrows)
writer.writeFile(self.feedback) # Creating .asc raste
return QgsRasterLayer(interpolation_raster_path,
"temp_qneat3_interpolation_raster")
def interpolation(self, layer, attribute_for_interpolation, attribute_name, output_dir, resolution):
#create interpolation-object
layer_data = QgsInterpolator.LayerData()
layer_data.source=layer
layer_data.interpolationAttribute=attribute_for_interpolation
layer_data.valueSource=0
layer_data.sourceType=0
# #add the given layer to the interpolation-object
# layer_data.vectorLayer = layer
#
# #use the given attribute instead of the z coordinate for interpolation
# layer_data.zCoordInterpolation=False
# layer_data.interpolationAttribute = attribute_for_interpolation
# layer_data.mInputType = 1
#interpolate the layer
interpolator = QgsIDWInterpolator([layer_data])
#create the resulting raster
rect = layer.extent()
ncol = int((rect.xMaximum() - rect.xMinimum()) / resolution)
nrows = int((rect.yMaximum() - rect.yMinimum()) / resolution)
#create outut directory
export_folder = QDir.toNativeSeparators(output_dir + "/batch_interpolation/")
if not os.path.exists(export_folder):
os.makedirs(export_folder)
#write raster to file system
export_path = QDir.toNativeSeparators(export_folder + layer.name() + "_" + attribute_name + ".tif")
#QMessageBox.about(None,"sss","4")
output = QgsGridFileWriter(interpolator, export_path, rect, ncol, nrows)
#QMessageBox.about(None,"sss","5")
a=output.writeFile()
def processAlgorithm(self, parameters, context, feedback):
interpolationData = ParameterInterpolationData.parseValue(parameters[self.INTERPOLATION_DATA])
method = self.parameterAsEnum(parameters, self.METHOD, context)
columns = self.parameterAsInt(parameters, self.COLUMNS, context)
rows = self.parameterAsInt(parameters, self.ROWS, context)
cellsizeX = self.parameterAsDouble(parameters, self.CELLSIZE_X, context)
cellsizeY = self.parameterAsDouble(parameters, self.CELLSIZE_Y, context)
bbox = self.parameterAsExtent(parameters, self.EXTENT, context)
output = self.parameterAsOutputLayer(parameters, self.OUTPUT, context)
triangulation = self.parameterAsFileOutput(parameters, self.TRIANGULATION_FILE, context)
if interpolationData is None:
raise QgsProcessingException(
self.tr('You need to specify at least one input layer.'))
if cellsizeX == 0.0 or cellsizeY == 0.0:
raise QgsProcessingException(
self.tr('Cellsize should be greater than 0.'))
layerData = []
layers = []
for row in interpolationData.split(';'):
v = row.split(',')
data = QgsInterpolator.LayerData()
# need to keep a reference until interpolation is complete
layer = QgsProcessingUtils.mapLayerFromString(v[0], context)
data.vectorLayer = layer
layers.append(layer)
data.zCoordInterpolation = bool(v[1])
data.interpolationAttribute = int(v[2])
if v[3] == '0':
data.mInputType = QgsInterpolator.POINTS
elif v[3] == '1':
data.mInputType = QgsInterpolator.STRUCTURE_LINES
else:
data.mInputType = QgsInterpolator.BREAK_LINES
layerData.append(data)
if method == 0:
interpolationMethod = QgsTINInterpolator.Linear
else:
interpolationMethod = QgsTINInterpolator.CloughTocher
interpolator = QgsTINInterpolator(layerData, interpolationMethod, feedback)
if triangulation is not None and triangulation != '':
interpolator.setExportTriangulationToFile(True)
interpolator.setTriangulationFilePath(triangulation)
writer = QgsGridFileWriter(interpolator,
output,
bbox,
columns,
rows,
cellsizeX,
cellsizeY)
writer.writeFile(feedback)
return {self.OUTPUT: output}
def processAlgorithm(self, feedback):
interpolationData = self.getParameterValue(self.INTERPOLATION_DATA)
method = self.getParameterValue(self.METHOD)
columns = self.getParameterValue(self.COLUMNS)
rows = self.getParameterValue(self.ROWS)
cellsizeX = self.getParameterValue(self.CELLSIZE_X)
cellsizeY = self.getParameterValue(self.CELLSIZE_Y)
extent = self.getParameterValue(self.EXTENT).split(',')
output = self.getOutputValue(self.OUTPUT_LAYER)
triangulation = self.getOutputValue(self.TRIANULATION_FILE)
if interpolationData is None:
raise GeoAlgorithmExecutionException(
self.tr('You need to specify at least one input layer.'))
if cellsizeX == 0.0 or cellsizeY == 0.0:
raise GeoAlgorithmExecutionException(
self.tr('Cellsize should be greater than 0.'))
xMin = float(extent[0])
xMax = float(extent[1])
yMin = float(extent[2])
yMax = float(extent[3])
bbox = QgsRectangle(xMin, yMin, xMax, yMax)
layerData = []
layers = []
for row in interpolationData.split(';'):
v = row.split(',')
data = QgsInterpolator.LayerData()
# need to keep a reference until interpolation is complete
layer = dataobjects.getLayerFromString(v[0])
data.vectorLayer = layer
layers.append(layer)
data.zCoordInterpolation = bool(v[1])
data.interpolationAttribute = int(v[2])
if v[3] == '0':
data.mInputType = QgsInterpolator.POINTS
elif v[3] == '1':
data.mInputType = QgsInterpolator.STRUCTURE_LINES
else:
data.mInputType = QgsInterpolator.BREAK_LINES
layerData.append(data)
if method == 0:
interpolationMethod = QgsTINInterpolator.Linear
else:
interpolationMethod = QgsTINInterpolator.CloughTocher
interpolator = QgsTINInterpolator(layerData, interpolationMethod)
interpolator.setExportTriangulationToFile(True)
interpolator.setTriangulationFilePath(triangulation)
writer = QgsGridFileWriter(interpolator, output, bbox, columns, rows,
cellsizeX, cellsizeY)
writer.writeFile()
def processAlgorithm(self, parameters, context, feedback):
interpolationData = ParameterInterpolationData.parseValue(
parameters[self.INTERPOLATION_DATA])
coefficient = self.parameterAsDouble(parameters,
self.DISTANCE_COEFFICIENT,
context)
bbox = self.parameterAsExtent(parameters, self.EXTENT, context)
pixel_size = self.parameterAsDouble(parameters, self.PIXEL_SIZE,
context)
output = self.parameterAsOutputLayer(parameters, self.OUTPUT, context)
columns = self.parameterAsInt(parameters, self.COLUMNS, context)
rows = self.parameterAsInt(parameters, self.ROWS, context)
if columns == 0:
columns = max(round(bbox.width() / pixel_size) + 1, 1)
if rows == 0:
rows = max(round(bbox.height() / pixel_size) + 1, 1)
if interpolationData is None:
raise QgsProcessingException(
self.tr('You need to specify at least one input layer.'))
layerData = []
layers = []
for i, row in enumerate(interpolationData.split('::|::')):
v = row.split('::~::')
data = QgsInterpolator.LayerData()
# need to keep a reference until interpolation is complete
layer = QgsProcessingUtils.variantToSource(v[0], context)
data.source = layer
data.transformContext = context.transformContext()
layers.append(layer)
data.valueSource = int(v[1])
data.interpolationAttribute = int(v[2])
if data.valueSource == QgsInterpolator.ValueAttribute and data.interpolationAttribute == -1:
raise QgsProcessingException(
self.
tr('Layer {} is set to use a value attribute, but no attribute was set'
.format(i + 1)))
if v[3] == '0':
data.sourceType = QgsInterpolator.SourcePoints
elif v[3] == '1':
data.sourceType = QgsInterpolator.SourceStructureLines
else:
data.sourceType = QgsInterpolator.SourceBreakLines
layerData.append(data)
interpolator = QgsIDWInterpolator(layerData)
interpolator.setDistanceCoefficient(coefficient)
writer = QgsGridFileWriter(interpolator, output, bbox, columns, rows)
writer.writeFile(feedback)
return {self.OUTPUT: output}
def processAlgorithm(self, parameters, context, feedback):
interpolationData = ParameterInterpolationData.parseValue(parameters[self.INTERPOLATION_DATA])
method = self.parameterAsEnum(parameters, self.METHOD, context)
columns = self.parameterAsInt(parameters, self.COLUMNS, context)
rows = self.parameterAsInt(parameters, self.ROWS, context)
bbox = self.parameterAsExtent(parameters, self.EXTENT, context)
output = self.parameterAsOutputLayer(parameters, self.OUTPUT, context)
if interpolationData is None:
raise QgsProcessingException(
self.tr('You need to specify at least one input layer.'))
layerData = []
layers = []
crs = QgsCoordinateReferenceSystem()
for row in interpolationData.split(';'):
v = row.split('::~::')
data = QgsInterpolator.LayerData()
# need to keep a reference until interpolation is complete
layer = QgsProcessingUtils.variantToSource(v[0], context)
data.source = layer
layers.append(layer)
if not crs.isValid():
crs = layer.sourceCrs()
data.valueSource = int(v[1])
data.interpolationAttribute = int(v[2])
if v[3] == '0':
data.sourceType = QgsInterpolator.SourcePoints
elif v[3] == '1':
data.sourceType = QgsInterpolator.SourceStructureLines
else:
data.sourceType = QgsInterpolator.SourceBreakLines
layerData.append(data)
if method == 0:
interpolationMethod = QgsTinInterpolator.Linear
else:
interpolationMethod = QgsTinInterpolator.CloughTocher
(triangulation_sink, triangulation_dest_id) = self.parameterAsSink(parameters, self.TRIANGULATION, context,
QgsTinInterpolator.triangulationFields(), QgsWkbTypes.LineString, crs)
interpolator = QgsTinInterpolator(layerData, interpolationMethod, feedback)
if triangulation_sink is not None:
interpolator.setTriangulationSink(triangulation_sink)
writer = QgsGridFileWriter(interpolator,
output,
bbox,
columns,
rows)
writer.writeFile(feedback)
return {self.OUTPUT: output, self.TRIANGULATION: triangulation_dest_id}
def processAlgorithm(self, feedback):
interpolationData = self.getParameterValue(self.INTERPOLATION_DATA)
coefficient = self.getParameterValue(self.DISTANCE_COEFFICIENT)
columns = self.getParameterValue(self.COLUMNS)
rows = self.getParameterValue(self.ROWS)
cellsizeX = self.getParameterValue(self.CELLSIZE_X)
cellsizeY = self.getParameterValue(self.CELLSIZE_Y)
extent = self.getParameterValue(self.EXTENT).split(',')
output = self.getOutputValue(self.OUTPUT_LAYER)
if interpolationData is None:
raise GeoAlgorithmExecutionException(
self.tr('You need to specify at least one input layer.'))
xMin = float(extent[0])
xMax = float(extent[1])
yMin = float(extent[2])
yMax = float(extent[3])
bbox = QgsRectangle(xMin, yMin, xMax, yMax)
layerData = []
layers = []
for row in interpolationData.split(';'):
v = row.split(',')
data = QgsInterpolator.LayerData()
# need to keep a reference until interpolation is complete
layer = dataobjects.getLayerFromString(v[0])
data.vectorLayer = layer
layers.append(layer)
data.zCoordInterpolation = bool(v[1])
data.interpolationAttribute = int(v[2])
if v[3] == '0':
data.mInputType = QgsInterpolator.POINTS
elif v[3] == '1':
data.mInputType = QgsInterpolator.STRUCTURE_LINES
else:
data.mInputType = QgsInterpolator.BREAK_LINES
layerData.append(data)
interpolator = QgsIDWInterpolator(layerData)
interpolator.setDistanceCoefficient(coefficient)
writer = QgsGridFileWriter(interpolator,
output,
bbox,
columns,
rows,
cellsizeX,
cellsizeY)
writer.writeFile()
def processAlgorithm(self, progress):
layer = dataobjects.getObjectFromUri(
self.getParameterValue(self.INPUT_LAYER))
layerType = self.getParameterValue(self.LAYER_TYPE)
method = self.getParameterValue(self.METHOD)
columns = self.getParameterValue(self.COLUMNS)
rows = self.getParameterValue(self.ROWS)
cellsizeX = self.getParameterValue(self.CELLSIZE_X)
cellsizeY = self.getParameterValue(self.CELLSIZE_Y)
extent = self.getParameterValue(self.EXTENT).split(',')
output = self.getOutputValue(self.OUTPUT_LAYER)
triangulation = self.getOutputValue(self.TRIANULATION_FILE)
if not QgsWkbTypes.hasZ(layer.wkbType()):
raise GeoAlgorithmExecutionException(
self.tr('Geometries in input layer does not have Z coordinates.'))
xMin = float(extent[0])
xMax = float(extent[1])
yMin = float(extent[2])
yMax = float(extent[3])
bbox = QgsRectangle(xMin, yMin, xMax, yMax)
layerData = QgsInterpolator.LayerData()
layerData.vectorLayer = layer
layerData.zCoordInterpolation = True
layerData.interpolationAttribute = -1
if layerType == 0:
layerData.mInputType = QgsInterpolator.POINTS
elif layerType == 1:
layerData.mInputType = QgsInterpolator.STRUCTURE_LINES
else:
layerData.mInputType = QgsInterpolator.BREAK_LINES
if method == 0:
interpolationMethod = QgsTINInterpolator.Linear
else:
interpolationMethod = QgsTINInterpolator.CloughTocher
interpolator = QgsTINInterpolator([layerData], interpolationMethod)
interpolator.setExportTriangulationToFile(True)
interpolator.setTriangulationFilePath(triangulation)
writer = QgsGridFileWriter(interpolator,
output,
bbox,
columns,
rows,
cellsizeX,
cellsizeY)
writer.writeFile()
def processAlgorithm(self, progress):
layer = dataobjects.getObjectFromUri(
self.getParameterValue(self.INPUT_LAYER))
fieldName = self.getParameterValue(self.ATTRIBUTE)
layerType = self.getParameterValue(self.LAYER_TYPE)
method = self.getParameterValue(self.METHOD)
columns = self.getParameterValue(self.COLUMNS)
rows = self.getParameterValue(self.ROWS)
cellsizeX = self.getParameterValue(self.CELLSIZE_X)
cellsizeY = self.getParameterValue(self.CELLSIZE_Y)
extent = self.getParameterValue(self.EXTENT).split(',')
output = self.getOutputValue(self.OUTPUT_LAYER)
triangulation = self.getOutputValue(self.TRIANULATION_FILE)
xMin = float(extent[0])
xMax = float(extent[1])
yMin = float(extent[2])
yMax = float(extent[3])
bbox = QgsRectangle(xMin, yMin, xMax, yMax)
layerData = QgsInterpolator.LayerData()
layerData.vectorLayer = layer
layerData.zCoordInterpolation = False
layerData.interpolationAttribute = layer.dataProvider().fieldNameIndex(fieldName)
if layerType == 0:
layerData.mInputType = QgsInterpolator.POINTS
elif layerType == 1:
layerData.mInputType = QgsInterpolator.STRUCTURE_LINES
else:
layerData.mInputType = QgsInterpolator.BREAK_LINES
if method == 0:
interpolationMethod = QgsTINInterpolator.Linear
else:
interpolationMethod = QgsTINInterpolator.CloughTocher
interpolator = QgsTINInterpolator([layerData], interpolationMethod)
interpolator.setExportTriangulationToFile(True)
interpolator.setTriangulationFilePath(triangulation)
writer = QgsGridFileWriter(interpolator,
output,
bbox,
columns,
rows,
cellsizeX,
cellsizeY)
writer.writeFile()
def processAlgorithm(self, parameters, context, feedback):
interpolationData = ParameterInterpolationData.parseValue(
parameters[self.INTERPOLATION_DATA])
coefficient = self.parameterAsDouble(parameters,
self.DISTANCE_COEFFICIENT,
context)
columns = self.parameterAsInt(parameters, self.COLUMNS, context)
rows = self.parameterAsInt(parameters, self.ROWS, context)
cellsizeX = self.parameterAsDouble(parameters, self.CELLSIZE_X,
context)
cellsizeY = self.parameterAsDouble(parameters, self.CELLSIZE_Y,
context)
bbox = self.parameterAsExtent(parameters, self.EXTENT, context)
output = self.parameterAsOutputLayer(parameters, self.OUTPUT, context)
if interpolationData is None:
raise QgsProcessingException(
self.tr('You need to specify at least one input layer.'))
layerData = []
layers = []
for row in interpolationData.split(';'):
v = row.split(',')
data = QgsInterpolator.LayerData()
# need to keep a reference until interpolation is complete
layer = QgsProcessingUtils.mapLayerFromString(v[0], context)
data.vectorLayer = layer
layers.append(layer)
data.zCoordInterpolation = bool(v[1])
data.interpolationAttribute = int(v[2])
if v[3] == '0':
data.mInputType = QgsInterpolator.POINTS
elif v[3] == '1':
data.mInputType = QgsInterpolator.STRUCTURE_LINES
else:
data.mInputType = QgsInterpolator.BREAK_LINES
layerData.append(data)
interpolator = QgsIDWInterpolator(layerData)
interpolator.setDistanceCoefficient(coefficient)
writer = QgsGridFileWriter(interpolator, output, bbox, columns, rows,
cellsizeX, cellsizeY)
writer.writeFile(feedback)
return {self.OUTPUT: output}
def processAlgorithm(self, progress):
layer = dataobjects.getObjectFromUri(
self.getParameterValue(self.INPUT_LAYER))
layerType = self.getParameterValue(self.LAYER_TYPE)
coefficient = self.getParameterValue(self.DISTANCE_COEFFICIENT)
columns = self.getParameterValue(self.COLUMNS)
rows = self.getParameterValue(self.ROWS)
cellsizeX = self.getParameterValue(self.CELLSIZE_X)
cellsizeY = self.getParameterValue(self.CELLSIZE_Y)
extent = self.getParameterValue(self.EXTENT).split(',')
output = self.getOutputValue(self.OUTPUT_LAYER)
if not QgsWkbTypes.hasZ(layer.wkbType()):
raise GeoAlgorithmExecutionException(
self.tr('Geometries in input layer does not have Z coordinates.'))
xMin = float(extent[0])
xMax = float(extent[1])
yMin = float(extent[2])
yMax = float(extent[3])
bbox = QgsRectangle(xMin, yMin, xMax, yMax)
layerData = QgsInterpolator.LayerData()
layerData.vectorLayer = layer
layerData.zCoordInterpolation = True
layerData.interpolationAttribute = -1
if layerType == 0:
layerData.mInputType = QgsInterpolator.POINTS
elif layerType == 1:
layerData.mInputType = QgsInterpolator.STRUCTURE_LINES
else:
layerData.mInputType = QgsInterpolator.BREAK_LINES
interpolator = QgsIDWInterpolator([layerData])
interpolator.setDistanceCoefficient(coefficient)
writer = QgsGridFileWriter(interpolator,
output,
bbox,
columns,
rows,
cellsizeX,
cellsizeY)
writer.writeFile()
def calcIsoInterpolation(self, iso_point_layer, resolution, interpolation_raster_path):
layer_data = QgsInterpolator.LayerData()
layer_data.source = iso_point_layer #in QGIS2: vectorLayer
layer_data.valueSource = QgsInterpolator.ValueAttribute
layer_data.interpolationAttribute = 1 #take second field to get costs
layer_data.sourceType = QgsInterpolator.SourcePoints
tin_interpolator = QgsTinInterpolator([layer_data], QgsTinInterpolator.Linear)
rect = iso_point_layer.extent()
ncol = int((rect.xMaximum() - rect.xMinimum()) / resolution)
nrows = int((rect.yMaximum() - rect.yMinimum()) / resolution)
writer = QgsGridFileWriter(tin_interpolator, self.interpolation_raster_path, rect, ncol, nrows, resolution, resolution)
writer.writeFile(self.feedback) # Creating .asc raste
return QgsRasterLayer(self.interpolation_raster_path, "temp_qneat3_interpolation_raster", True)
def processAlgorithm(self, parameters, context, feedback):
interpolationData = ParameterInterpolationData.parseValue(parameters[self.INTERPOLATION_DATA])
coefficient = self.parameterAsDouble(parameters, self.DISTANCE_COEFFICIENT, context)
columns = self.parameterAsInt(parameters, self.COLUMNS, context)
rows = self.parameterAsInt(parameters, self.ROWS, context)
bbox = self.parameterAsExtent(parameters, self.EXTENT, context)
output = self.parameterAsOutputLayer(parameters, self.OUTPUT, context)
if interpolationData is None:
raise QgsProcessingException(
self.tr('You need to specify at least one input layer.'))
layerData = []
layers = []
for row in interpolationData.split(';'):
v = row.split('::~::')
data = QgsInterpolator.LayerData()
# need to keep a reference until interpolation is complete
layer = QgsProcessingUtils.variantToSource(v[0], context)
data.source = layer
layers.append(layer)
data.valueSource = int(v[1])
data.interpolationAttribute = int(v[2])
if v[3] == '0':
data.sourceType = QgsInterpolator.SourcePoints
elif v[3] == '1':
data.sourceType = QgsInterpolator.SourceStructureLines
else:
data.sourceType = QgsInterpolator.SourceBreakLines
layerData.append(data)
interpolator = QgsIDWInterpolator(layerData)
interpolator.setDistanceCoefficient(coefficient)
writer = QgsGridFileWriter(interpolator,
output,
bbox,
columns,
rows)
writer.writeFile(feedback)
return {self.OUTPUT: output}
def processAlgorithm(self, progress):
layer = dataobjects.getObjectFromUri(
self.getParameterValue(self.INPUT_LAYER))
fieldName = self.getParameterValue(self.ATTRIBUTE)
layerType = self.getParameterValue(self.LAYER_TYPE)
coefficient = self.getParameterValue(self.DISTANCE_COEFFICIENT)
columns = self.getParameterValue(self.COLUMNS)
rows = self.getParameterValue(self.ROWS)
cellsizeX = self.getParameterValue(self.CELLSIZE_X)
cellsizeY = self.getParameterValue(self.CELLSIZE_Y)
extent = self.getParameterValue(self.EXTENT).split(',')
output = self.getOutputValue(self.OUTPUT_LAYER)
xMin = float(extent[0])
xMax = float(extent[1])
yMin = float(extent[2])
yMax = float(extent[3])
bbox = QgsRectangle(xMin, yMin, xMax, yMax)
layerData = QgsInterpolator.LayerData()
layerData.vectorLayer = layer
layerData.zCoordInterpolation = False
layerData.interpolationAttribute = layer.dataProvider().fieldNameIndex(fieldName)
if layerType == 0:
layerData.mInputType = QgsInterpolator.POINTS
elif layerType == 1:
layerData.mInputType = QgsInterpolator.STRUCTURE_LINES
else:
layerData.mInputType = QgsInterpolator.BREAK_LINES
interpolator = QgsIDWInterpolator([layerData])
interpolator.setDistanceCoefficient(coefficient)
writer = QgsGridFileWriter(interpolator,
output,
bbox,
columns,
rows,
cellsizeX,
cellsizeY)
writer.writeFile()
