///

/// 栅格分类专题图

///

/// 栅格图层

public static void funColorForRaster_Classify(IRasterLayer pRasterLayer)

{

IRasterClassifyColorRampRenderer pRClassRend = new RasterClassifyColorRampRenderer() as IRasterClassifyColorRampRenderer;

IRasterRenderer pRRend = pRClassRend as IRasterRenderer;

IRaster pRaster = pRasterLayer.Raster;

IRasterBandCollection pRBandCol = pRaster as IRasterBandCollection;

IRasterBand pRBand = pRBandCol.Item(0);

if (pRBand.Histogram == null)

{

pRBand.ComputeStatsAndHist();

}

pRRend.Raster = pRaster;

pRClassRend.ClassCount = 10;

pRRend.Update();

IRgbColor pFromColor = new RgbColor() as IRgbColor;

pFromColor.Red = 255;

pFromColor.Green = 0;

pFromColor.Blue = 0;

IRgbColor pToColor = new RgbColor() as IRgbColor;

pToColor.Red = 0;

pToColor.Green = 0;

pToColor.Blue = 255;

IAlgorithmicColorRamp colorRamp = new AlgorithmicColorRamp() as IAlgorithmicColorRamp;

colorRamp.Size = 10;

colorRamp.FromColor = pFromColor;

colorRamp.ToColor = pToColor;

bool createColorRamp;

colorRamp.CreateRamp(out createColorRamp);

IFillSymbol fillSymbol = new SimpleFillSymbol() as IFillSymbol;

for (int i = 0; i < pRClassRend.ClassCount; i++)

{

fillSymbol.Color = colorRamp.get_Color(i);

pRClassRend.set_Symbol(i, fillSymbol as ISymbol);

pRClassRend.set_Label(i, pRClassRend.get_Break(i).ToString("0.00"));

}

pRasterLayer.Renderer = pRRend;

}

///

/// 打开遥感图像

///

/// 图像的地址

/// IRasterLayer

private IRasterLayer OpenImage(string imagePath)

{

string ws = Path.GetDirectoryName(imagePath);

string fbs = Path.GetFileName(imagePath);

IWorkspaceFactory pWork = new RasterWorkspaceFactory();

IRasterWorkspace pRasterWs = pWork.OpenFromFile(ws,0) as IRasterWorkspace;

IRasterDataset pRasterDataset = pRasterWs.OpenRasterDataset(fbs);

IRasterLayer pRasterLayer = new RasterLayer() as IRasterLayer;

pRasterLayer.CreateFromDataset(pRasterDataset);

return pRasterLayer;

}