//函数编号：Raster-08
//函数名：createRasterValue
//函数功能：把RasterDataset存储为某一个记录，以便于在RasterCatalog中存储
//参数：pRasterDs：需要存储的RasterDataset
//备注：通过该函数可以把设置RasterStorageDef。包括压缩、金字塔的建立等
public IRasterValue createRasterValue(IRasterDataset pRasterDs)
{
IRasterValue pRasterVal;
IRasterStorageDef pRasStoreDef;
// ++ storage parameter
pRasStoreDef = new RasterStorageDef();
//createRasterStorageDef
pRasStoreDef.CompressionType = esriRasterCompressionType.esriRasterCompressionJPEG2000; //esriRasterSdeCompressionTypeEnum.esriRasterSdeCompressionTypeJPEG2000;
pRasStoreDef.PyramidResampleType = rstResamplingTypes.RSP_CubicConvolution;
//如果PyramidLevel=-1则建立全金字塔，
pRasStoreDef.PyramidLevel = -1;
// ++ raster value to raster field
pRasterVal = new RasterValueClass();
pRasterVal.RasterDataset = pRasterDs;
pRasterVal.RasterStorageDef = pRasStoreDef;
return(pRasterVal);
// ++ cleanup
//？问题，已经return后的语句是否能用？
//pRasterVal = null;
//pRasStoreDef = null;
}
//函数号：
//函数名：LoadRasterToCatalogDatabase
//函数功能：Raster导入Database
//参数：pWorkspace：数据库，pWorkspace可以是Access 或者SDE
// strCata：Catalog名称
// pRasterDs：需要入库的Rasterdataset
//备注：insert a raster dataset with given path and file name to an existing raster catalog
public void LoadRasterToCatalogDatabase(IWorkspace pWorkspace, string strCata, IRasterDataset pRasterDs, string name)
{
//QI IRasterWorkspaceEx to IWorkspace
IRasterWorkspaceEx pRasWKS = pWorkspace as IRasterWorkspaceEx;
//Open raster catalog
//IRasterCatalog相当于一个FeatureClass（表），表中的每一个记录可以存放Raster
IRasterCatalog pInCatalog = pRasWKS.OpenRasterCatalog(strCata);
// get raster field index
int iRaster = pInCatalog.RasterFieldIndex;
// QI IFeatureClass for inserting
IFeatureClass pFeatureClass = pInCatalog as IFeatureClass;
// get insert cursor
IFeatureCursor pCursor = pFeatureClass.Insert(false);
// create raster value from raster dataset with default storagedef
IRasterValue pRasterValue = new RasterValueClass();
pRasterValue.RasterDataset = pRasterDs;
pRasterValue.RasterStorageDef = new RasterStorageDefClass();
pRasterValue.RasterDatasetName.NameString = name;
//这里可以设置新的RasterStorageDef
// insert the rastervalue ' it will update name, metadata and geometry field
IFeatureBuffer pRow = pFeatureClass.CreateFeatureBuffer();
pRow.set_Value(iRaster, pRasterValue);
pCursor.InsertFeature(pRow);
}
public IRasterValue createRasterValue(IRasterDataset pRasterDs, IRasterStorageDef pRasStoreDef)
{
IRasterValue pRasterVal;
pRasterVal = new RasterValueClass();
pRasterVal.RasterDataset = pRasterDs;
pRasterVal.RasterStorageDef = pRasStoreDef;
return(pRasterVal);
// ++ cleanup
//？问题，已经return后的语句是否能用？
//pRasterVal = null;
//pRasStoreDef = null;
}
//�����ţ�
//��������LoadRasterToCatalogDatabase
//�������ܣ�Raster����Database
//������pWorkspace�����ݿ⣬pWorkspace������Access ����SDE
// strCata��Catalog����
// pRasterDs����Ҫ����Rasterdataset
//��ע��insert a raster dataset with given path and file name to an existing raster catalog
public void LoadRasterToCatalogDatabase(IWorkspace pWorkspace, string strCata, IRasterDataset pRasterDs,string name)
{
//QI IRasterWorkspaceEx to IWorkspace
IRasterWorkspaceEx pRasWKS = pWorkspace as IRasterWorkspaceEx;
//Open raster catalog
//IRasterCatalog�൱��һ��FeatureClass����������е�ÿһ����¼���Դ��Raster
IRasterCatalog pInCatalog = pRasWKS.OpenRasterCatalog(strCata);
// get raster field index
int iRaster = pInCatalog.RasterFieldIndex;
// QI IFeatureClass for inserting
IFeatureClass pFeatureClass = pInCatalog as IFeatureClass;
// get insert cursor
IFeatureCursor pCursor = pFeatureClass.Insert(false);
// create raster value from raster dataset with default storagedef
IRasterValue pRasterValue = new RasterValueClass();
pRasterValue.RasterDataset = pRasterDs;
pRasterValue.RasterStorageDef = new RasterStorageDefClass();
pRasterValue.RasterDatasetName.NameString = name;
//������������µ�RasterStorageDef
// insert the rastervalue ' it will update name, metadata and geometry field
IFeatureBuffer pRow = pFeatureClass.CreateFeatureBuffer();
pRow.set_Value(iRaster, pRasterValue);
pCursor.InsertFeature(pRow);
}
public IRasterValue createRasterValue(IRasterDataset pRasterDs, IRasterStorageDef pRasStoreDef)
{
IRasterValue pRasterVal;
pRasterVal = new RasterValueClass();
pRasterVal.RasterDataset = pRasterDs;
pRasterVal.RasterStorageDef = pRasStoreDef;
return (pRasterVal);
// ++ cleanup
//�����⣬�Ѿ�return�������Ƿ����ã�
//pRasterVal = null;
//pRasStoreDef = null;
}
//������ţ�Raster-08
//��������createRasterValue
//�������ܣ���RasterDataset�洢Ϊijһ����¼���Ա�����RasterCatalog�д洢
//������pRasterDs����Ҫ�洢��RasterDataset
//��ע��ͨ���ú�����������RasterStorageDef������ѹ�����������Ľ�����
public IRasterValue createRasterValue(IRasterDataset pRasterDs)
{
IRasterValue pRasterVal;
IRasterStorageDef pRasStoreDef;
// ++ storage parameter
pRasStoreDef = new RasterStorageDef();
//createRasterStorageDef
pRasStoreDef.CompressionType = esriRasterCompressionType.esriRasterCompressionJPEG2000; //esriRasterSdeCompressionTypeEnum.esriRasterSdeCompressionTypeJPEG2000;
pRasStoreDef.PyramidResampleType = rstResamplingTypes.RSP_CubicConvolution;
//���PyramidLevel=-1����ȫ��������
pRasStoreDef.PyramidLevel = -1;
// ++ raster value to raster field
pRasterVal = new RasterValueClass();
pRasterVal.RasterDataset = pRasterDs;
pRasterVal.RasterStorageDef = pRasStoreDef;
return (pRasterVal);
// ++ cleanup
//�����⣬�Ѿ�return�������Ƿ����ã�
//pRasterVal = null;
//pRasStoreDef = null;
}
