本文整理汇总了Python中qgis.core.QgsPointXY.setX方法的典型用法代码示例。如果您正苦于以下问题：Python QgsPointXY.setX方法的具体用法？Python QgsPointXY.setX怎么用？Python QgsPointXY.setX使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类qgis.core.QgsPointXY的用法示例。
在下文中一共展示了QgsPointXY.setX方法的1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，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: processAlgorithm
# 需要导入模块: from qgis.core import QgsPointXY [as 别名]
# 或者: from qgis.core.QgsPointXY import setX [as 别名]
def processAlgorithm(self, parameters, context, feedback):
layer = QgsProcessingUtils.mapLayerFromString(self.getParameterValue(self.INPUT_VECTOR), context)
rasterPath = str(self.getParameterValue(self.INPUT_RASTER))
rasterDS = gdal.Open(rasterPath, gdal.GA_ReadOnly)
geoTransform = rasterDS.GetGeoTransform()
rasterDS = None
fields = QgsFields()
fields.append(QgsField('id', QVariant.Int, '', 10, 0))
fields.append(QgsField('poly_id', QVariant.Int, '', 10, 0))
fields.append(QgsField('point_id', QVariant.Int, '', 10, 0))
writer = self.getOutputFromName(self.OUTPUT_LAYER).getVectorWriter(fields, QgsWkbTypes.Point,
layer.crs(), context)
outFeature = QgsFeature()
outFeature.setFields(fields)
fid = 0
polyId = 0
pointId = 0
features = QgsProcessingUtils.getFeatures(layer, context)
total = 100.0 / layer.featureCount() if layer.featureCount() else 0
for current, f in enumerate(features):
geom = f.geometry()
bbox = geom.boundingBox()
xMin = bbox.xMinimum()
xMax = bbox.xMaximum()
yMin = bbox.yMinimum()
yMax = bbox.yMaximum()
(startRow, startColumn) = raster.mapToPixel(xMin, yMax, geoTransform)
(endRow, endColumn) = raster.mapToPixel(xMax, yMin, geoTransform)
# use prepared geometries for faster intersection tests
engine = QgsGeometry.createGeometryEngine(geom.geometry())
engine.prepareGeometry()
for row in range(startRow, endRow + 1):
for col in range(startColumn, endColumn + 1):
(x, y) = raster.pixelToMap(row, col, geoTransform)
point = QgsPointXY()
point.setX(x)
point.setY(y)
if engine.contains(point):
outFeature.setGeometry(QgsGeometry(point))
outFeature['id'] = fid
outFeature['poly_id'] = polyId
outFeature['point_id'] = pointId
fid += 1
pointId += 1
writer.addFeature(outFeature, QgsFeatureSink.FastInsert)
pointId = 0
polyId += 1
feedback.setProgress(int(current * total))
del writer