def_feature=out_lyr.GetLayerDefn() # 遍历原始的Shapefile文件给每个Geometry做Buffer操作 forfeatureinin_lyr: geometry=feature.GetGeometryRef() buffer=geometry.Buffer(bdistance) out_feature=ogr.Feature(def_feature) out_feature.SetGeometry(buffer) out_lyr.CreateFeature(out_feature) out_feature=None out...
此步骤我们将使用GDAL的几何函数判断缓冲区与图层对象之间是否相交: booleanintersects=false;while(layer!=null&&layer.GetFeatureCount()>0){Featurefeature=layer.GetNextFeature();GeometryfeatureGeom=feature.GetGeometryRef();// 检查是否相交if(buffer.Intersects(featureGeom)){intersects=true;System.out.println(...
* derived internally from the geotransform of the dataset. The transform * needs to transform the geometry locations into pixel/line coordinates * of the target raster. * * The output raster may be of any GDAL supported datatype, though currently * internally the burning is done either as GDT...
对几何要素进行缓冲: Buffer() ; 两个geometry是否相等:Equal() ; 两个geometry之间的最短距离: Distance() ; 用方框边界框住这个几何形状,并返回四个角的点坐标(minx,maxx, miny, maxy): GetEnvelope() 。 3.2多个进行计算 相交Intersection 不相交 Disjoint 相邻Touches 横穿Crosses 包含Within 包含Contain 重叠...
poly.AddGeometry(geomBuffer) featureDefn = outLayer.GetLayerDefn() feature = ogr.Feature(featureDefn) feature.SetGeometry(geomBuffer) feature.SetField("id", n) outLayer.CreateFeature(feature) del feature del poly del featureDefn outLayer.SyncToDisk() #就是这关键的一句害我夜不能寐 ...
在GDAL库中,buffer通常指的是地理空间数据(如矢量或栅格数据)的缓冲区分析。GDAL本身并没有一个直接的buffer函数来设置自定义值,但可以通过其他方式来实现缓冲区分析,并设置自定义的缓冲区距离。GDAL主要用于地理空间数据的读取、写入和处理,而缓冲区分析通常是通过OGR(GDAL的一部分)来进行的。 以下是如何在GDAL/OGR...
BufferOp::precisionScaleFactor(const Geometry *g, double distance, int maxPrecisionDigits) { const Envelope *env=g->getEnvelopeInternal(); double envMax = std::max( std::max(fabs(env->getMaxX()), fabs(env->getMinX())), std::max(fabs(env->getMaxY()), fabs(env->getMinY())) ...
()# 遍历原始的Shapefile文件给每个Geometry做Buffer操作 # current_union=layer[0].Clone()print('the lengthoflayer:',len(layer))iflen(layer)==0:returnfori,featureinenumerate(layer):geometry=feature.GetGeometryRef()ifi==0:current_union=geometry.Clone()current_union=current_union.Union(geometry)....
geometryRef = feat.GetGeometryRef() geomBuffer = geometryRef.Buffer(buffer) # geomBuffer = feat.geometry().Buffer(buffer, 30) out_feat = ogr.Feature(featureDefn) out_feat.SetGeometry(geomBuffer) bufferlayer.CreateFeature(out_feat) out_feat = None ...
out_ds=driver.CreateDataSource(fname)out_lyr=out_ds.CreateLayer(fname,layer.GetSpatialRef(),ogr.wkbPolygon)def_feature=out_lyr.GetLayerDefn()# 遍历原始的Shapefile文件给每个Geometry做Buffer操作 # current_union=layer[0].Clone()print('the lengthoflayer:',len(layer))iflen(layer)==0:returnfor...