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创建File GeoDataBase 和栅格目录及向栅格目录中添加影像  

2013-08-28 22:40:03|  分类: ArcGIS Engine开 |  标签: |举报 |字号 订阅

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     实现过程:创建或打开一个FileGDB-->创建或打开一个栅格目录-->选择一个文件夹,把此文件夹下的栅格数据导入栅格目录:

下面为核心代码

复制代码
using System;
using System.IO;
using ESRI.ArcGIS.DataSourcesGDB;
using ESRI.ArcGIS.DataSourcesRaster;
using ESRI.ArcGIS.Geodatabase;
using ESRI.ArcGIS.Geometry;
using ESRI.ArcGIS.DataManagementTools;
using ESRI.ArcGIS.Geoprocessor;
using ESRI.ArcGIS.Geoprocessing;
using ESRI.ArcGIS.esriSystem;
using ESRI.ArcGIS.DataSourcesFile;
using ESRI.ArcGIS.Carto;
namespace RasterOperation
{
   public class RasterCatalogOperation
    {
        /// <summary>
        /// fileGDB路径
        /// </summary>
        public string FileGDBPath
        {
            get ;
            set ;
        }
        /// <summary>
        /// 栅格数据目录
        /// </summary>
        public string SourceRasterDic
        {
            get;
            set;
        }
        /// <summary>
        /// 栅格目录名称
        /// </summary>
        public string RasterDSName
        {
            get;
            set;
        }
       /// <summary>
       /// 栅格坐标系
       /// </summary>
        public ISpatialReference RasterSpRf
        {
            get;
            set;
        }
        /// <summary>
        /// 矢量坐标系
        /// </summary>
        public ISpatialReference GeometrySpRf
        {
            get;
            set;
        }
       /// <summary>
       /// 栅格目录转换为图层
       /// </summary>
       /// <param name="folderName">目录名</param>
       /// <param name="datasetName">数据集名</param>
       /// <returns>要素图层</returns>
        public ILayer AddRasterCatalogLayer(string folderName, string datasetName)
        {
            IWorkspaceFactory workspaceFactory = new FileGDBWorkspaceFactoryClass();
            try
            {
                IWorkspace workspc = workspaceFactory.OpenFromFile(folderName, 0);
                IRasterWorkspaceEx pRaterWs = (IRasterWorkspaceEx)workspc;
                IRasterCatalog rasterCatalog = pRaterWs.OpenRasterCatalog(datasetName);
                ESRI.ArcGIS.Carto.IGdbRasterCatalogLayer rastercatalogLayer = new
                GdbRasterCatalogLayerClass();
                rastercatalogLayer.Setup((ITable)rasterCatalog);
                //Add it to map if the layer is valid.
                if (!(rastercatalogLayer == null))
                {
                    return rastercatalogLayer as ILayer;
                }
                else
                    return null;
            }
            catch 
            {
                return null;
            }
            //Create a raster catalog layer.
          
        }



        /// <summary>
        /// 创建FileGDB
        /// </summary>
        /// <param name="fullPath">路径名</param>
        public void CreateFileGDB(string fullPath)
        {
            if (!Directory.Exists(fullPath))
            {
                IWorkspaceFactory2 wsFctry = new FileGDBWorkspaceFactoryClass();
                wsFctry.Create(System.IO.Path.GetDirectoryName(fullPath),
                               System.IO.Path.GetFileName(fullPath), null, 0);
                FileGDBPath = fullPath;
                wsFctry = null;
            }
        }
 
        /// <summary>
        /// 创建RasterCatalog
        /// </summary>
        /// <param name="path">路径</param>
        /// <param name="catalogName">名称</param>
        /// <param name="rasterCoordSys">栅格坐标系</param>
        /// <param name="geometryCoordsys">矢量坐标系</param>
        public void CreateRasterCatalog_GP(string path, string catalogName, ISpatialReference rasterCoordSys, ISpatialReference geometryCoordsys)
        {
            //坐标转换
            //Coordinate system for raster column
            IGPCoordinateSystem rSR = new GPCoordinateSystemClass();
            rSR.SpatialReference = rasterCoordSys;
            //Coordinate system for geometry column
            IGPSpatialReference gSR = new GPSpatialReferenceClass();
            gSR.SpatialReference = geometryCoordsys;

            //初始化GeoProcessor
            ESRI.ArcGIS.Geoprocessor.Geoprocessor geoProcessor = new ESRI.ArcGIS.Geoprocessor.Geoprocessor();
            RasterDSName = catalogName;
            //创建工具
            CreateRasterCatalog createRasterCatalog = new CreateRasterCatalog();

            //设置参数
            createRasterCatalog.out_path = path;
            createRasterCatalog.out_name = catalogName;
            createRasterCatalog.raster_spatial_reference = rSR;
            createRasterCatalog.spatial_reference = gSR;

            //利用工具创建RasterCatalog
            geoProcessor.Execute(createRasterCatalog, null);
            //ReturnMessages(geoProcessor);
        }

        //GP message handling
        public void ReturnMessages(Geoprocessor gp)
        {
            if (gp.MessageCount > 0)
            {
                for (int Count = 0; Count <= gp.MessageCount - 1; Count++)
                {
                    Console.WriteLine(gp.GetMessage(Count));
                }
            }
        }
        //static string rasterFolder = @"c:\tempdata";
        //static string outRC = @"Database Connections\connection to raster.sde\rc_203";
        //LoadDirtoRasterCatalog(outRC, rasterFolder);


        /// <summary>
        /// 输入整个目录到库中
        /// </summary>
        /// <param name="outRasterCatalog">目标栅格库全路径</param>
        /// <param name="inputDir">输入目录</param>
        public void LoadDirtoRasterCatalog(string outRasterCatalog, string inputDir)
        {
            if (!Directory.Exists(inputDir))
            {
                System.Windows.Forms.MessageBox.Show("路径不正确,请重新输入", "提示");
                return;
            }
            //初始化 GeoProcessor
            ESRI.ArcGIS.Geoprocessor.Geoprocessor geoProcessor = new ESRI.ArcGIS.Geoprocessor.Geoprocessor();

            //设置参数
            IVariantArray parameters = new VarArrayClass();

            //输入的文件夹目录
            parameters.Add(inputDir);

            //目标栅格库路径
            parameters.Add(outRasterCatalog);

            //Execute the tool to load rasters in the directory to raster catalog
            geoProcessor.Execute("WorkspaceToRasterCatalog", parameters, null);
           // ReturnMessages(geoProcessor);
        }
        /// <summary>
        /// 选择要素的坐标系
        /// </summary>
        /// <param name="refFileName"></param>
        /// <returns></returns>
        public ISpatialReference InputReferece()
        {
            System.Windows.Forms.OpenFileDialog openFileDialog = new System.Windows.Forms.OpenFileDialog();
            if (SourceRasterDic != string.Empty || SourceRasterDic != " ")
            {
                openFileDialog.InitialDirectory = SourceRasterDic;
 
            }
            openFileDialog.Title = "加载图层数据";
            openFileDialog.Filter = "Tif文件(*.tif)|*.tif|Shp文件(*.shp)|*.shp|Jpg文件(*.jpg)|*.jpg|Bmp文件(*.bmp)|*.bmp|Gif文件(*.gif)|*.gif|Img文件(*.img)|*.img|Png文件(*.png)|*.png|Tiff文件(*.tiff)|*.tiff";
            openFileDialog.Multiselect = false;
            openFileDialog.DefaultExt = "*.tif|*.shp";
            openFileDialog.SupportMultiDottedExtensions = true;
            string refFileName = string.Empty;
            if (openFileDialog.ShowDialog() == System.Windows.Forms.DialogResult.OK)
            {
                refFileName = openFileDialog.FileName;
            }
            else
            {
                return null;
            }
            IWorkspaceFactory pWorkspaceFactory = null;
            string p = System.IO.Path.GetExtension(refFileName);
            string fileNameWithoutExtentsion = System.IO.Path.GetFileNameWithoutExtension(refFileName);
            string pathName = System.IO.Path.GetDirectoryName(refFileName);
            string fileName = System.IO.Path.GetFileName(refFileName);
            if (p == ".shp" || p == ".SHP")
            {
                IFeatureWorkspace ws;
                IFeatureClass pFeatureClass;
                pWorkspaceFactory = new ShapefileWorkspaceFactory();
                ws = pWorkspaceFactory.OpenFromFile(pathName, 0) as IFeatureWorkspace;
                pFeatureClass = ws.OpenFeatureClass(fileName);
                ws = null;
                return (pFeatureClass as IGeoDataset).SpatialReference;
            }
            if (p == ".jpg" || p == ".bmp" || p == ".gif" || p == ".img" || p == ".png" || p == ".tif" || p == ".tiff"
                  || p == ".JPG" || p == ".BMP" || p == ".GIF" || p == ".IMG" || p == ".PNG" || p == ".TIF" || p == ".TIFF")
            {
                IRasterLayer pRasterLayer = new RasterLayerClass();
                IRasterWorkspace pRasterWorkspace;
                IRaster pRaster;
                IRasterDataset pRasterDataset;
                IWorkspace pWorkspace;
                pWorkspaceFactory = new RasterWorkspaceFactoryClass();
                pWorkspace = pWorkspaceFactory.OpenFromFile(pathName, 0);//0
                pRasterWorkspace = pWorkspace as IRasterWorkspace;
                pRasterDataset = pRasterWorkspace.OpenRasterDataset(fileName);
                pRaster = pRasterDataset.CreateDefaultRaster();
                pRasterLayer.CreateFromRaster(pRaster);
                IRasterProps pRasterProps = pRasterLayer.Raster as IRasterProps;
                return pRasterProps.SpatialReference;
            }
            return null;
        }
        /// <summary>
        /// 获取要素数据集
        /// </summary>
        /// <param name="workspace">工作空间</param>
        /// <returns>要素数据集</returns>
        public IFeatureClass GetFirstFClass(IWorkspace workspace)
        {
            IFeatureClass FClass = null;
            IEnumDataset enumDataset = workspace.get_Datasets(esriDatasetType.esriDTAny);
            enumDataset.Reset();
            IDataset perFeatSet = enumDataset.Next();
            while (perFeatSet != null)
            {
                esriDatasetType getDatasetType = perFeatSet.Type;
                switch (getDatasetType)
                {

                    case esriDatasetType.esriDTFeatureClass:
                        ILayerFactoryHelper layerFactoryHelper = new LayerFactoryHelperClass();
                        IEnumLayer enumLayer = layerFactoryHelper.CreateLayersFromName(perFeatSet.FullName);
                        enumLayer.Reset();
                        ILayer layer = enumLayer.Next();
                        while (layer != null)
                        {
                            //筛选出第一个面状要素数据集
                            if (layer is IFeatureLayer &&
                                (layer as IFeatureLayer).FeatureClass.ShapeType
                                == ESRI.ArcGIS.Geometry.esriGeometryType.esriGeometryPolygon)
                            {
                                return (layer as IFeatureLayer).FeatureClass;
                            }
                            layer = enumLayer.Next();
                        }
                        System.Runtime.InteropServices.Marshal.ReleaseComObject(enumLayer);
                        break;
                    case esriDatasetType.esriDTFeatureDataset:
                    case esriDatasetType.esriDTTable:
                    case esriDatasetType.esriDTRasterDataset:
                        break;
                    default:
                        break;
                }
                perFeatSet = enumDataset.Next();
            }
            System.Runtime.InteropServices.Marshal.ReleaseComObject(enumDataset);
            return FClass;
        } 
    }

}
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