PIE SDK热力图

 1         /// <summary>
 2         /// 热力图生成算法
 3         /// </summary>
 4         private void Test_HotMapContructAlgo()
 5         {
 6             #region 1参数设置
 7             string strFileName = @"D:\\data\\China\\省会城市.shp";
 8             IFeatureDataset fDataset = PIE.DataSource.DatasetFactory.OpenFeatureDataset(strFileName);
 9             if (fDataset.GetGeomType() != GeometryType.GeometryPoint) return;
10             HotMapContruct_Exchange_Info info = new HotMapContruct_Exchange_Info();
11             info.InputFeatureDataset = fDataset;
12             //具体分析
13             info.BUseWeightFiled = true;
14             info.WeightFeildName = "GDP";//根据数据的权重字段进行设置
15             info.Radius = 20;
16             info.BCreateFeatureDataset = false;
17             info.DeviceWidth = 2000;
18             info.DefualtWeightValue = 50;
19             info.OutRasterType = "GTIFF";
20             info.DeviceWidth = 1000;
21             info.CellSize = fDataset.GetExtent().GetWidth() / info.CellSize;
22             info.OutRasterFilePath = @"D:\\temp\\省会城市热力图测试.tiff";
23             #endregion
24 
25             //2、算法执行
26             PIE.CommonAlgo.HotMapContructAlgo alog = new HotMapContructAlgo();
27             alog.Params = info;
28             alog.Execute();
29 
30             //3、结果显示
31             ILayer layer = LayerFactory.CreateDefaultLayer(info.OutRasterFilePath);
32             if (layer == null)
33             {
34                 MessageBox.Show("执行失败");
35                 return;
36             }
37             m_HookHelper.FocusMap.AddLayer(layer);     m_HookHelper.ActiveView.PartialRefresh(ViewDrawPhaseType.ViewAll);
38             (fDataset as IDisposable).Dispose();//释放内存
39             fDataset = null;
40         }