Python analysis.QgsGridFileWriter类代码示例

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本文整理汇总了Python中qgis.analysis.QgsGridFileWriter类的典型用法代码示例。如果您正苦于以下问题：Python QgsGridFileWriter类的具体用法？Python QgsGridFileWriter怎么用？Python QgsGridFileWriter使用的例子？那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。

在下文中一共展示了QgsGridFileWriter类的7个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的Python代码示例。

示例1: processAlgorithm

    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}

开发者ID:NathanW2，项目名称:QGIS，代码行数:56，代码来源:TinInterpolation.py

示例2: processAlgorithm

    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()

开发者ID:cayetanobv，项目名称:QGIS，代码行数:53，代码来源:IdwInterpolation.py

示例3: processAlgorithm

    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()

开发者ID:spono，项目名称:QGIS，代码行数:53，代码来源:TinInterpolationZValue.py

示例4: processAlgorithm

    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}

开发者ID:havatv，项目名称:QGIS，代码行数:50，代码来源:IdwInterpolation.py

示例5: processAlgorithm

    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}

开发者ID:GeoCat，项目名称:QGIS，代码行数:48，代码来源:IdwInterpolation.py

示例6: processAlgorithm

    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()

开发者ID:medspx，项目名称:QGIS，代码行数:43，代码来源:IdwInterpolationAttribute.py

示例7: processAlgorithm

    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)

        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 = []
        crs = QgsCoordinateReferenceSystem()
        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)
            if not crs.isValid():
                crs = layer.crs()

            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

        (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,
                                   cellsizeX,
                                   cellsizeY)

        writer.writeFile(feedback)
        return {self.OUTPUT: output, self.TRIANGULATION: triangulation_dest_id}

开发者ID:GeoCat，项目名称:QGIS，代码行数:64，代码来源:TinInterpolation.py

注：本文中的qgis.analysis.QgsGridFileWriter类示例由纯净天空整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。

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Python analysis.QgsGridFileWriter类代码示例

示例1: processAlgorithm

示例2: processAlgorithm

示例3: processAlgorithm

示例4: processAlgorithm

示例5: processAlgorithm

示例6: processAlgorithm

示例7: processAlgorithm

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