ae二次开发进行dem表面积求算

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1、四、算法代码此后为自定义类中的代码（1）栅格数据提取：采用二维数组对栅格数据进行结果存储，代码为arcengine帮助文档内部搜索出然后修正的publicdouble[,]ReadWriteRawBlocks(IRasterDataset2rasterDs){           //Createaraster.           IRaster2raster2=rasterDs.CreateFullRaster()asIRaster2;           //Createarastercursorwithasystem-optimizedpixelbl

2、ocksizebypassinganull.           IRasterCursorrasterCursor=raster2.CreateCursorEx(null);           //UsetheIRasterEditinterface.           IRasterEditrasterEdit=raster2asIRasterEdit;           //Loopthrougheachbandandpixelblock.           IRasterBandCollectionbands=rasterDsasIRaste

3、rBandCollection;           IPixelBlock3pixelblock3=null;            IRawBlocks rawBlocks=(IRawBlocks)bands.Item(0);           IRasterInfo rasInfo=rawBlocks.RasterInfo;            longblockwidth=0;           longblockheight=0;           System.Arraypixels;           IPnttlc=null;   

4、        objectv;           double[]v1=newdouble[1000000];           intm=0;           intlenght=0;           double[,]value=newdouble[rasInfo.Width,rasInfo.Height];           longbandCount=bands.Count;           do           {               pixelblock3=rasterCursor.PixelBlockasIPix

5、elBlock3;               blockwidth=pixelblock3.Width;               blockheight=pixelblock3.Height;               pixelblock3.Mask(255);               //value=newdouble[blockwidth,blockheight];               for(intk=0;k

6、larray.                   pixels=(System.Array)pixelblock3.get_PixelData(k);                   for(longi=0;i

7、               v=pixels.GetValue(i,j);                           //Dosomethingwiththevalue.//此处的数据提取是以64*64单元提取，需要主意顺序，该段代码前一讲中已说明。                           v1[m]=Convert.ToDouble(v);                           lenght=m;                           m++;                       }       

8、            }