得到Raster的一些基本信息（高程值，列數，列數）

IRasterLayer pRasterLayer = (IRasterLayer)pSC1.Scene.get_Layer(0);

IRaster pRaster = pRasterLayer.Raster;

int pRowCount = pRasterLayer.RowCount;

???????????????????????

IRasterBandCollection pRasterbandCollection = (IRasterBandCollection)pRaster;

IRasterBand pRasterBand = pRasterbandCollection.Item(0);

?

IRawPixels pRawPixels = (IRawPixels)pRasterBand;

IRasterProps pRProps = (IRasterProps)pRawPixels;

IRasterAnalysisProps pRasterAP = (IRasterAnalysisProps)pRaster;

//獲得DEM左上角的坐標

IGeoDataset pGeoDataset = (IGeoDataset)pRaster;

IEnvelope2 pEnv2 = new EnvelopeClass();

pEnv2 = (IEnvelope2)pGeoDataset.Extent;

IPoint pPoint = pEnv2.UpperLeft;

???????????????????????

//用經緯度表示的DEM源點X坐標

double pOriginX = pPoint.X;????????????????????????? //DEM源點X坐標（左上角點）??

double pOriginY = pPoint.Y;????????????????????????? //DEM源點Y坐標

//MessageBox.Show(Convert.ToString(pOriginX)+" ??"+Convert .ToString (pOriginY ));

?

IRasterStatistics pRasterStatics = pRasterBand.Statistics;

double m_MaxHeight = pRasterStatics.Maximum;??????? //DEM最大的高程值

double? pBlockX = (double)pRProps.MeanCellSize().X; //網格的X間距

double? pBlockY = (double)pRProps.MeanCellSize().Y; //網格的Y間距

double? pBlockArea = pBlockX * pBlockY;???????????? //網格的面積

?

int pColumns = pRProps.Width;?????????????????????? //DEM列數

int pRows = pRProps.Height;???????????????????????? //DEM行數

IPnt pBlockSize = new DblPntClass();

pBlockSize.X = pColumns;

pBlockSize.Y = pRows;

IPixelBlock3 pPixelBlock = (IPixelBlock3)pRawPixels.CreatePixelBlock(pBlockSize);

IPnt pBlockOrigin = new DblPntClass();

pBlockOrigin.X = 0;

pBlockOrigin.Y = 0;

pRawPixels.Read(pBlockOrigin, (IPixelBlock)pPixelBlock);

double pHeight = pPixelBlock.Width;

//存儲格網DEM的二維數組

System.Array pPixelData = (System.Array)pPixelBlock.get_PixelDataByRef(0);

用pPixelData.GetValue(j, k)來獲得每一個柵格的高程值

轉載于:https://www.cnblogs.com/kisstome88/archive/2009/04/05/1429812.html

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