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]) 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 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, parameters, context, feedback): interpolationData = ParameterInterpolationData.parseValue( parameters[self.INTERPOLATION_DATA]) method = self.parameterAsEnum(parameters, self.METHOD, 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 = [] 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, parameters, context, feedback): interpolationData = ParameterInterpolationData.parseValue(parameters[self.INTERPOLATION_DATA]) method = self.parameterAsEnum(parameters, self.METHOD, 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 = [] 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}