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ISaveAs.SaveAs Method

2019-11-30 VB 前端之家

前端之家收集整理的这篇文章主要介绍了ISaveAs.SaveAs Method，前端之家小编觉得挺不错的，现在分享给大家，也给大家做个参考。

Creates a new persistent Dataset of a given format.

[VisualBasic.NET]
Public Function SaveAs ( _
ByValNameAsString,_
ByValWorkspaceAsIWorkspace,_
ByValFormatAsString _
)AsIDataset

[C#]
public IDataset SaveAs (
string Name,
IWorkspace Workspace,
string Format
);

[C++]
HRESULT SaveAs(
BSTR Name,@L_404_8@* Workspace,BSTR Format,IDataset** Dataset
);

@H_502_60@ [C++]

Parameters

Name[in]

Nameis a parameter of typeBSTR

Workspace[in]

Workspaceis a parameter of type@L_404_8@

Format[in]

Formatis a parameter of typeBSTR

Dataset[out,retval]

Datasetis a parameter of typeIDataset

Product Availability

@H_502_60@ Available with ArcGIS Engine,ArcGIS Desktop,and ArcGIS Server.

Remarks

The format strings usedfor the supported formats are below,and they are case sensitive:

@H_502_60@

Format Name	String Used
Imagine	"IMAGINE Image"
TIFF	"TIFF"
GRID	"GRID"
JPEG	"JPG"
JP2000	"JP2"
BMP	"BMP"
PNG	"PNG"
GIF	"GIF"
PCI Raster	"PIX"
X11 Pixmap	"XPM"
PCRaster	"MAP"
Memory Raster	"MEM"
HDF4	"HDF4"
BIL	"BIL"
BIP	"BIP"
BSQ	"BSQ"
Idrisi Raster Format	"RST"
ENVI Raster Format	"ENVI"
Geodatabase Raster	"GDB"

How to SaveAs raster data

Summary This article shows how to save a raster to varIoUs raster formats (save as),how to set up storage properties if saved to a geodatabase,and how to control pyramid building when saved as IMG,TIFF,GRID,and geodatabase formats.

Development licensing	Deployment licensing
ArcView	ArcView
ArcEditor	ArcEditor
ArcInfo	ArcInfo
Engine Developer Kit	Engine Runtime

Additional Requirements

Add the following References to your Visual Studio project and the corresponding using (C#) or Imports (VB.NET) statements:
Imports ESRI.ArcGIS.DataSourcesGDB
Imports ESRI.ArcGIS.DataSourcesRaster
Imports ESRI.ArcGIS.Geodatabase
Imports ESRI.ArcGIS.esriSystem

@H_502_60@

Saving asraster data

@H_502_60@ By using theISaveAs interface,you can save araster datasetor a rasterinto many raster formats. You can also save to a geodatabase if the output workspace is one of the geodatabase workspaces. See the following code example:

@H_502_60@

[C#]DE>DE>

public void SaveAs(IRasterDataset rasterDataset,IWorkspace workspace,string
    sFormat,string sName)
{
    //Using ISaveAs2,you can specify the storage property for the output raster,such as tile size,compression,//and pyramid building,etc. for geodatabase raster,some also applies to output as a file format.
    ISaveAs saveAs = rasterDataset as ISaveAs;
    saveAs.SaveAs(sName,workspace,sFormat);
}

public void SaveAsWithCompressionAndTile(IRasterDataset rasterDataset)
{
    //rasterDataset can be created from any data source,file system,or geodatabase. 

    //It could also be a raster object (IRaster).
    ISaveAs2 saveAs2 = (ISaveAs2)rasterDataset;

    //Set storage. 
    IRasterStorageDef rasterStorageDef = new RasterStorageDefClass();
    IRasterStorageDef2 rasterStorageDef2 = (IRasterStorageDef2)rasterStorageDef;
    rasterStorageDef2.CompressionType =
        esriRasterCompressionType.esriRasterCompressionJPEG2000;
    rasterStorageDef2.CompressionQuality = 50;
    rasterStorageDef2.Tiled = true;
    rasterStorageDef2.TileHeight = 128;
    rasterStorageDef2.TileWidth = 128;
    //Set output workspace.
    IRasterWorkspaceEx rasterWorkspaceEx = OpenFileGDBWorkspace("c://temp//fgdb.gdb")
        ;
    IWorkspace workspace = (IWorkspace)rasterWorkspaceEx;
    saveAs2.SaveAsRasterDataset("filegdbRaster","gdb",rasterStorageDef2)
        ;
}


public IRasterWorkspaceEx OpenFileGDBWorkspace(string sPath)
{
    IWorkspaceFactory workspaceFactory = new FileGDBWorkspaceFactoryClass();
    IWorkspace workspace = workspaceFactory.OpenFromFile(sPath,0);
    IRasterWorkspaceEx rasterWorkspaceEx = (IRasterWorkspaceEx)workspace;
    return rasterWorkspaceEx;
}

DE>

[VB.NET]DE>DE>

Public Sub SaveAs(ByVal rasterDataset As IRasterDataset,ByVal workspace As IWorkspace,ByVal 
sFormat As String,ByVal sName As String)
    
    'Using ISaveAs2,'and pyramid building,some also applies to output as a file format.
    Dim saveAs As ISaveAs = TryCast(rasterDataset,ISaveAs)
    saveAs.SaveAs(sName,sFormat)
    
End Sub


Public Sub SaveAsWithCompressionAndTile(ByVal rasterDataset As IRasterDataset)
    
    'rasterDataset can be created from any data source,or geodatabase.
    'It could also be a raster object (IRaster).
    Dim saveAs2 As ISaveAs2 = CType(rasterDataset,ISaveAs2)
    
    'Set storage.
    Dim rasterStorageDef As IRasterStorageDef = New RasterStorageDefClass
    Dim rasterStorageDef2 As IRasterStorageDef2 = CType(rasterStorageDef,IRasterStorageDef2)
    
    rasterStorageDef2.CompressionType = esriRasterCompressionType.esriRasterCompressionJPEG2000
    rasterStorageDef2.CompressionQuality = 50
    rasterStorageDef2.Tiled = True
    rasterStorageDef2.TileHeight = 128
    rasterStorageDef2.TileWidth = 128
    
    'Set output workspace.
    Dim rasterWorkspaceEx As IRasterWorkspaceEx = OpenFileGDBWorkspace("c:/temp/fgdb.gdb")
    Dim workspace As IWorkspace = CType(rasterWorkspaceEx,IWorkspace)
    
    saveAs2.SaveAsRasterDataset("filegdbRaster",rasterStorageDef2)
    
End Sub


Public Function OpenFileGDBWorkspace(ByVal sPath As String) As IRasterWorkspaceEx
    
    Dim workspaceFactory As IWorkspaceFactory = New FileGDBWorkspaceFactoryClass
    Dim workspace As IWorkspace = workspaceFactory.OpenFromFile(sPath,0)
    Dim rasterWorkspaceEx As IRasterWorkspaceEx = CType(workspace,IRasterWorkspaceEx)
    
    Return rasterWorkspaceEx
    
End Function

@H_502_60@

@H_502_60@ Turning off pyramid building @H_502_60@ @H_502_60@ You can also turn off pyramid building for outputs,suchas IMG,and TIFF formats using theISaveAs2 @H_502_60@ @H_502_60@ interface. See the following code example: @H_502_60@

[C#]DE>DE>

public void SaveAsWithoutBuildingPyramids(IRaster raster)
{
    ISaveAs2 saveAs2 = (ISaveAs2)raster;

    IRasterStorageDef rasterStorageDef = new RasterStorageDefClass();
    IRasterStorageDef2 rasterStorageDef2 = (IRasterStorageDef2)rasterStorageDef;

    rasterStorageDef2.PyramidLevel = 0;

    IRasterWorkspace rasterWorkspace = SetRasterWorkspace("c://temp");
    IWorkspace workspace = (IWorkspace)rasterWorkspace;

    saveAs2.SaveAsRasterDataset("image1.img","IMAGINE Image",rasterStorageDef2);

}


public IRasterWorkspace SetRasterWorkspace(string sPath)
{
    IWorkspaceFactory workspaceFactory = new RasterWorkspaceFactoryClass();
    IWorkspace workspace = workspaceFactory.OpenFromFile(sPath,0);
    IRasterWorkspace rasterWorkspace = (IRasterWorkspace)workspace;

    return rasterWorkspace;
}

DE>

[VB.NET]DE>DE>

Public Sub SaveAsWithoutBuildingPyramids(ByVal raster As IRaster)
    
    Dim saveAs2 As ISaveAs2 = CType(raster,ISaveAs2)
    
    Dim rasterStorageDef As IRasterStorageDef = New RasterStorageDefClass
    Dim rasterStorageDef2 As IRasterStorageDef2 = CType(rasterStorageDef,IRasterStorageDef2)
    
    rasterStorageDef2.PyramidLevel = 0
    
    Dim rasterWorkspace As IRasterWorkspace = SetRasterWorkspace("c:/temp")
    Dim workspace As IWorkspace = CType(rasterWorkspace,IWorkspace)
    
    saveAs2.SaveAsRasterDataset("image1.img",rasterStorageDef2)
    
End Sub


Public Function SetRasterWorkspace(ByVal sPath As String) As IRasterWorkspace
    
    Dim workspaceFactory As IWorkspaceFactory = New RasterWorkspaceFactoryClass
    Dim workspace As IWorkspace = workspaceFactory.OpenFromFile(sPath,0)
    Dim rasterWorkspace As IRasterWorkspace = CType(workspace,IRasterWorkspace)
    
    Return rasterWorkspace
    
End Function

本文转自：http://changqingnew.blog.163.com/blog/static/1075233820103474425849/