ArcGIS Pro SDK （七）编辑 8 操作栅格字段

ArcGIS Pro SDK （七）编辑 8 操作栅格字段

环境：Visual Studio 2022 + .NET6 + ArcGIS Pro SDK 3.0

1 从栅格字段读取

QueuedTask.Run(() =>{var sel = MapView.Active.Map.GetSelection();// 从栅格字段读取栅格作为 InteropBitmap// 该位图可以用作图像源或写入磁盘var insp = new ArcGIS.Desktop.Editing.Attributes.Inspector();insp.Load(sel.ToDictionary().Keys.First(), sel.ToDictionary().Values.First());var ibmp = insp["Photo"] as System.Windows.Interop.InteropBitmap;});

2 将图像写入栅格字段

QueuedTask.Run(() =>{var sel = MapView.Active.Map.GetSelection();// 将图像插入栅格字段// 图像将以无压缩方式写入var insp = new ArcGIS.Desktop.Editing.Attributes.Inspector();insp.Load(sel.ToDictionary().Keys.First(), sel.ToDictionary().Values.First());insp["Photo"] = @"e:\temp\Hydrant.jpg";var op = new EditOperation();op.Name = "Raster Inspector";op.Modify(insp);op.Execute();});

3 将压缩图像写入栅格字段

QueuedTask.Run(() =>{// 打开磁盘上的栅格数据集并创建压缩栅格值数据集对象var dataStore = new ArcGIS.Core.Data.FileSystemDatastore(new ArcGIS.Core.Data.FileSystemConnectionPath(new System.Uri(@"e:\temp"), ArcGIS.Core.Data.FileSystemDatastoreType.Raster));using (var fileRasterDataset = dataStore.OpenDataset<ArcGIS.Core.Data.Raster.RasterDataset>("Hydrant.jpg")){var storageDef = new ArcGIS.Core.Data.Raster.RasterStorageDef();storageDef.SetCompressionType(ArcGIS.Core.Data.Raster.RasterCompressionType.JPEG);storageDef.SetCompressionQuality(90);var rv = new ArcGIS.Core.Data.Raster.RasterValue();rv.SetRasterDataset(fileRasterDataset);rv.SetRasterStorageDef(storageDef);var sel = MapView.Active.Map.GetSelection();// 将栅格值对象插入栅格字段var insp = new ArcGIS.Desktop.Editing.Attributes.Inspector();insp.Load(sel.ToDictionary().Keys.First(), sel.ToDictionary().Values.First());insp["Photo"] = rv;var op = new EditOperation();op.Name = "Raster Inspector";op.Modify(insp);op.Execute();}});