public static IRasterRenderer ClassifyRenderer(IRasterLayer raslyr,IRgbColor start_clr,IRgbColor end_clr,int count)
{
IRasterClassifyColorRampRenderer pRClassRend = new RasterClassifyColorRampRendererClass();
IRasterRenderer rasterRenderer = pRClassRend as IRasterRenderer;
IRaster pRaster = raslyr.Raster;
IRasterBandCollection pRBandCol = pRaster as IRasterBandCollection;
IRasterBand pRBand = pRBandCol.Item(0);
if (pRBand.Histogram == null)
{
pRBand.ComputeStatsAndHist();
}
rasterRenderer.Raster = pRaster;
pRClassRend.ClassCount = count;
rasterRenderer.Update();
IAlgorithmicColorRamp colorRamp = new AlgorithmicColorRampClass();
colorRamp.Size = count;
colorRamp.FromColor = start_clr;
colorRamp.ToColor = end_clr;
bool createColorRamp;
colorRamp.CreateRamp(out createColorRamp);
IFillSymbol fillSymbol = new SimpleFillSymbolClass();
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"));
}
return rasterRenderer;
}
/// <summary>
/// 根据容积率大小进行梯度颜色显示
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void button4_Click(object sender, EventArgs e)
{
//梯度颜色算法
IAlgorithmicColorRamp pAlgoColorRamp = new AlgorithmicColorRampClass();
pAlgoColorRamp.Size = MyArray.Length;
IRgbColor pFromColor = new RgbColorClass(), pToColor = new RgbColorClass();
pFromColor.Red = 255;
pFromColor.Green = 255;
pFromColor.Blue = 255;
pToColor.Red = 0;
pToColor.Green = 255;
pToColor.Blue = 255;
pAlgoColorRamp.FromColor = pFromColor;
pAlgoColorRamp.ToColor = pToColor;
bool ok = true;
pAlgoColorRamp.CreateRamp(out ok);
IClassBreaksRenderer pRender = new ClassBreaksRendererClass();
pRender.BreakCount = MyArray.Length;
pRender.Field = "Plot_Ratio";
ISimpleFillSymbol pSym;
System.Array.Sort(MyArray);
for (int i = 0; i < MyArray.Length; i++)
{
pRender.set_Break(i, (double)MyArray.GetValue(i));
pSym = new SimpleFillSymbolClass();
pSym.Color = pAlgoColorRamp.get_Color(i);
pRender.set_Symbol(i, (ISymbol)pSym);
}
IGeoFeatureLayer pGeoLyr = (IGeoFeatureLayer)Form1.mainForm.axMapControl1.get_Layer(1);//确保先加入地块图层
pGeoLyr.Renderer = (IFeatureRenderer)pRender;
Form1.mainForm.axMapControl1.Refresh();
Form1.mainForm.axTOCControl1.Update();
}
public static IRasterRenderer ClassifyRenderer(ESRI.ArcGIS.Geodatabase.IRasterDataset pRasterDataset)
{
try
{
//create the classify render:创建渲染器
IRasterClassifyColorRampRenderer pClassifyRenderer = new RasterClassifyColorRampRendererClass();
IRasterRenderer pRasterRenderer = (IRasterRenderer)pClassifyRenderer;
IRaster pRaster = pRasterDataset.CreateDefaultRaster();
pRasterRenderer.Raster = pRaster;
pClassifyRenderer.ClassCount = 10;
pRasterRenderer.Update();
//创建颜色
IRgbColor pFromColor = new RgbColorClass();
pFromColor.Red = 255;
pFromColor.Green = 0;
pFromColor.Blue = 0;
IRgbColor pToColor = new RgbColorClass();
pToColor.Red = 0;
pToColor.Green = 255;
pToColor.Blue = 255;
//set the color ramp for the symbology:生成色带
IAlgorithmicColorRamp pRamp = new AlgorithmicColorRampClass();
pRamp.Size = 10;
pRamp.FromColor = pFromColor;
pRamp.ToColor = pToColor;
bool pBoolColorRamp;
pRamp.CreateRamp(out pBoolColorRamp);
//create the symbol for the classes.:创建符号
IFillSymbol pFillSymbol = new SimpleFillSymbolClass();
for (int i = 0; i < pClassifyRenderer.ClassCount; i++)
{
pFillSymbol.Color = pRamp.get_Color(i);
pClassifyRenderer.set_Symbol(i, (ISymbol)pFillSymbol);
pClassifyRenderer.set_Label(i, Convert.ToString(i));
}
return(pRasterRenderer);
}
catch (System.Exception ex)
{
System.Diagnostics.Debug.WriteLine(ex.Message);
return(null);
}
}
public static void funColorForRaster_Classify(IRasterLayer pRasterLayer, int ClassNum)
{
IRasterClassifyColorRampRenderer pRClassRend = new RasterClassifyColorRampRendererClass();
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 = ClassNum;
pRRend.Update();
IRgbColor pFromColor = new RgbColorClass();
pFromColor.Red = 0;//绿
pFromColor.Green = 255;
pFromColor.Blue = 0;
IRgbColor pToColor = new RgbColorClass();
pToColor.Red = 255;//红
pToColor.Green = 0;
pToColor.Blue = 0;
IAlgorithmicColorRamp colorRamp = new AlgorithmicColorRampClass();
colorRamp.Size = ClassNum;
colorRamp.FromColor = pFromColor;
colorRamp.ToColor = pToColor;
bool createColorRamp;
colorRamp.CreateRamp(out createColorRamp);
IFillSymbol fillSymbol = new SimpleFillSymbolClass();
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, (i + 1).ToString());
}
pRasterLayer.Renderer = pRRend;
MainFrom.m_mapControl.AddLayer(pRasterLayer);
}
//Ϊդ��ͼ�����ݽ��з�����ɫ
public static IRasterLayer GetRLayerClassifyColor(IRaster pRaster, double dMaxDis)
{
IRasterClassifyColorRampRenderer pClassRen = new RasterClassifyColorRampRendererClass();
IRasterRenderer pRasRen = pClassRen as RasterClassifyColorRampRendererClass;
//Set raster for the render and update
pRasRen.Raster = pRaster;
pClassRen.ClassCount = 10;
pRasRen.Update();
//Create a color ramp to use
//���������յ���ɫ
IColor pFromColor = new RgbColorClass();
IRgbColor pRgbColor = pFromColor as IRgbColor;
pRgbColor.Red = 255;
pRgbColor.Green = 0;
pRgbColor.Blue = 0;
IColor pToColor = new RgbColorClass();
pRgbColor = pToColor as IRgbColor;
pRgbColor.Red = 0;
pRgbColor.Green = 255;
pRgbColor.Blue = 0;
//������ɫ�ּ�
IAlgorithmicColorRamp pRamp = new AlgorithmicColorRampClass();
pRamp.Size = 10;
pRamp.FromColor = pFromColor;
pRamp.ToColor = pToColor;
bool ok = true;
pRamp.CreateRamp(out ok);
//Create symbol for the classes
IFillSymbol pFSymbol = new SimpleFillSymbolClass();
double LabelValue = Convert.ToDouble(dMaxDis / 6);
for (int i = 0; i <= pClassRen.ClassCount - 1; i++)
{
pFSymbol.Color = pRamp.get_Color(i);
pClassRen.set_Symbol(i, pFSymbol as ISymbol);
double h1 = LabelValue * i;
double h2 = LabelValue * (i + 1);
pClassRen.set_Label(i, h1.ToString() + "��" + h2.ToString());
}
//Update the renderer and plug into layer
pRasRen.Update();
IRasterLayer pRLayer = new RasterLayerClass();
pRLayer.CreateFromRaster(pRaster);
pRLayer.Renderer = pClassRen as IRasterRenderer;
return pRLayer;
}
//Ϊդ��ͼ�����ݰ��մ���Сֵ�����ֵ�ķ�����ɫ
public static IRasterLayer SetRsLayerClassifiedColor(IRaster pRaster)
{
IRasterClassifyColorRampRenderer pClassRen = new RasterClassifyColorRampRendererClass();
IRasterRenderer pRasRen = pClassRen as RasterClassifyColorRampRendererClass;
//Set raster for the render and update
pRasRen.Raster = pRaster;
pClassRen.ClassCount = 9;
pRasRen.Update();
//Create a color ramp to use
//���������յ���ɫ
IColor pFromColor = new RgbColorClass();
IRgbColor pRgbColor = pFromColor as IRgbColor;
pRgbColor.Red = 255;
pRgbColor.Green = 200;
pRgbColor.Blue = 0;
IColor pToColor = new RgbColorClass();
pRgbColor = pToColor as IRgbColor;
pRgbColor.Red = 0;
pRgbColor.Green = 0;
pRgbColor.Blue = 255;
//������ɫ�ּ�
IAlgorithmicColorRamp pRamp = new AlgorithmicColorRampClass();
pRamp.Size = 9;
pRamp.FromColor = pFromColor;
pRamp.ToColor = pToColor;
bool ok = true;
pRamp.CreateRamp(out ok);
//���դ��ͳ����ֵ
IRasterBandCollection pRsBandCol = pRaster as IRasterBandCollection;
IRasterBand pRsBand = pRsBandCol.Item(0);
pRsBand.ComputeStatsAndHist();
IRasterStatistics pRasterStatistic = pRsBand.Statistics;
double dMaxValue = pRasterStatistic.Maximum;
double dMinValue = pRasterStatistic.Minimum;
//Create symbol for the classes
IFillSymbol pFSymbol = new SimpleFillSymbolClass();
double LabelValue = Convert.ToDouble((dMaxValue - dMinValue) / 9);
for (int i = 0; i <= pClassRen.ClassCount - 1; i++)
{
pFSymbol.Color = pRamp.get_Color(i);
pClassRen.set_Symbol(i, pFSymbol as ISymbol);
double h1 = (LabelValue * i) + dMinValue;
double h2 = (LabelValue * (i + 1)) + dMinValue;
pClassRen.set_Label(i, h1.ToString() + "��" + h2.ToString());
}
//Update the renderer and plug into layer
pRasRen.Update();
IRasterLayer pRLayer = new RasterLayerClass();
pRLayer.CreateFromRaster(pRaster);
pRLayer.Renderer = pClassRen as IRasterRenderer;
return pRLayer;
}
/// <summary>
/// 设置图层渲染器。
/// </summary>
/// <param name="rasterLayer">需要渲染唯一值的栅格图层。</param>
/// <param name="renderfiled">渲染的字段（可选，默认为Value）。</param>
/// <returns></returns>
public IRasterRenderer UniqueValueRender(IRasterLayer rasterLayer, string renderfiled = "Value")
{
try
{
//这是从头用到尾的对象
IRasterUniqueValueRenderer uniqueValueRenderer = new RasterUniqueValueRendererClass
{
Field = renderfiled
};
IRasterRenderer pRasterRenderer = uniqueValueRenderer as IRasterRenderer;
//计算栅格唯一值
IRasterCalcUniqueValues calcUniqueValues = new RasterCalcUniqueValuesClass();
IUniqueValues uniqueValues = new UniqueValuesClass();
calcUniqueValues.AddFromRaster(rasterLayer.Raster, 0, uniqueValues);
//设置唯一值
IRasterRendererUniqueValues renderUniqueValues = uniqueValueRenderer as IRasterRendererUniqueValues;
renderUniqueValues.UniqueValues = uniqueValues;
//创建色带
IRgbColor pFromColor = FromIC;
IRgbColor pToColor = ToIC;
IAlgorithmicColorRamp colorRamp = new AlgorithmicColorRampClass
{
FromColor = pFromColor,
ToColor = pToColor,
Size = uniqueValues.Count
};
bool pOk;
colorRamp.CreateRamp(out pOk);
//设置标题
uniqueValueRenderer.HeadingCount = 1;
uniqueValueRenderer.set_Heading(0, "All Data Value");
uniqueValueRenderer.set_ClassCount(0, uniqueValues.Count);
//设置色带
IRasterRendererColorRamp pRasterRendererColorRamp = uniqueValueRenderer as IRasterRendererColorRamp;
pRasterRendererColorRamp.ColorRamp = colorRamp;
//需要对算出来的唯一值升序重排
double[] tmp = new double[uniqueValues.Count];
for (int i = 0; i < uniqueValues.Count; i++)
{
tmp[i] = Convert.ToDouble(uniqueValues.get_UniqueValue(i));
}
System.Array.Sort(tmp);
//对每一个唯一值设置颜色
for (int i = 0; i < uniqueValues.Count; i++)
{
//添加唯一值并设置标签
uniqueValueRenderer.AddValue(0, i, tmp[i]);
uniqueValueRenderer.set_Label(0, i, tmp[i].ToString());
//透明色及参数
IRgbColor zerocolor = new RgbColorClass()
{
Transparency = 0,
NullColor = true,
};
IFillSymbol fs = new SimpleFillSymbol(); //唯一值填充符号
if (tmp[i] == 0) //将值为0的栅格颜色设为透明
{
fs = new SimpleFillSymbol
{
Color = zerocolor
};
}
else //值不为零则设置为色带对应索引颜色
{
fs.Color = colorRamp.get_Color(i);
}
uniqueValueRenderer.set_Symbol(0, i, fs as ISymbol); //对唯一值设置色带对应颜色
}
return(pRasterRenderer);
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
return(null);
}
}
private void btn_2e_Click(object sender, EventArgs e)
{
ILayer pLayer = new FeatureLayerClass();
IFeatureClass featureClass = GetFeatureClass(@"D:\a_gis工程设计实践课\china\墓穴地shp\grave.shp");
IGeoDataset geo = featureClass as IGeoDataset;
object extend = geo.Extent;
object o = null;
IFeatureClassDescriptor feades = new FeatureClassDescriptorClass();
feades.Create(featureClass, null, "area");
IRasterRadius rasterrad = new RasterRadiusClass();
rasterrad.SetVariable(12, ref o);
object dCell = 0.014800000;//可以根据不同的点图层进行设置
IInterpolationOp interpla = new RasterInterpolationOpClass();
IRasterAnalysisEnvironment rasanaenv = interpla as IRasterAnalysisEnvironment;
rasanaenv.SetCellSize(esriRasterEnvSettingEnum.esriRasterEnvValue, ref dCell);
rasanaenv.SetExtent(esriRasterEnvSettingEnum.esriRasterEnvValue, ref extend, ref o);
IGeoDataset g_GeoDS_Raster = interpla.IDW((IGeoDataset)feades, 2, rasterrad, ref o);
IRaster pOutRsater = (IRaster)g_GeoDS_Raster;
IRasterLayer pOutRasterlayer = new RasterLayerClass();
pOutRasterlayer.CreateFromRaster(pOutRsater);
pOutRasterlayer.Name = "两个因素都考虑";
//IRaster raster = pOutRasterlayer.Raster;
IRaster2 raster2 = (IRaster2)pOutRsater;
// 指定像素块大小
IPnt pntBlock = new PntClass();
pntBlock.X = 1280;
pntBlock.Y = 1280;
//创建一个光标以给定像素块大小
//定义RasterCursor初始化，参数设为null，内部自动设置PixelBlock大小
//IRasterCursor pRasterCursor = pRaster2.CreateCursorEx(null);
IRasterCursor rasterCursor = raster2.CreateCursorEx(null);
//控制像素块级别的编辑操作
IRasterEdit rasterEdit = raster2 as IRasterEdit;
if (rasterEdit.CanEdit())
{
//得到一段光栅带
IRasterBandCollection bandCollection = (IRasterBandCollection)pOutRsater;
System.Array pixels;
IPnt pnt = null;
object value;
int bandCount = bandCollection.Count;
//创建像素块
IPixelBlock3 pixelBlock3 = null;
int blockWidth = 0;
int blockHeight = 0;
double temp = 0;
do
{
pixelBlock3 = rasterCursor.PixelBlock as IPixelBlock3;
blockWidth = pixelBlock3.Width;
blockHeight = pixelBlock3.Height;
for (int k = 0; k < bandCount; k++)
{
//指定平面的像素的数组
pixels = (System.Array)pixelBlock3.get_PixelData(k);
for (int i = 0; i < blockWidth; i++)
{
for (int j = 0; j < blockHeight; j++)
{
//value = pixels.GetValue(i, j);
////if (Convert.ToInt32(value) == 0)
//{
//设置像素的颜色值
temp = PixelValue1[i, j] + PixelValue2[i, j];
pixels.SetValue((int)temp, i, j);
//}
}
}
pixelBlock3.set_PixelData(k, pixels);
}
pnt = rasterCursor.TopLeft;
rasterEdit.Write(pnt, (IPixelBlock)pixelBlock3);
}while (rasterCursor.Next());
System.Runtime.InteropServices.Marshal.ReleaseComObject(rasterEdit);
//渲染
IRasterClassifyColorRampRenderer pRClassRend = new RasterClassifyColorRampRendererClass();
IRasterRenderer pRRend = pRClassRend as IRasterRenderer;
IRaster pRaster = pOutRasterlayer.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 RgbColorClass();
pFromColor.Red = 135;//天蓝色
pFromColor.Green = 206;
pFromColor.Blue = 235;
IRgbColor pToColor = new RgbColorClass();
pToColor.Red = 124;//草坪绿
pToColor.Green = 252;
pToColor.Blue = 0;
IAlgorithmicColorRamp colorRamp = new AlgorithmicColorRampClass();
colorRamp.Size = 10;
colorRamp.FromColor = pFromColor;
colorRamp.ToColor = pToColor;
bool createColorRamp;
colorRamp.CreateRamp(out createColorRamp);
IFillSymbol fillSymbol = new SimpleFillSymbolClass();
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"));
}
pOutRasterlayer.Renderer = pRRend;
this.axMapControl1.AddLayer(pOutRasterlayer);
}
}
private void button_IDW_TIME_Click(object sender, EventArgs e)
{
object obj = null;
ILayer pLayer = new FeatureLayerClass();
IFeatureClass featureClass = GetFeatureClass(@"D:\a_gis工程设计实践课\china\墓穴地shp\grave.shp");
IGeoDataset geo = featureClass as IGeoDataset;
object extend = geo.Extent;
object o = null;
IFeatureClassDescriptor feades = new FeatureClassDescriptorClass();
feades.Create(featureClass, null, "time_inter");
IRasterRadius rasterrad = new RasterRadiusClass();
rasterrad.SetVariable(12, ref obj);
object dCell = 0.014800000;//可以根据不同的点图层进行设置
IInterpolationOp interpla = new RasterInterpolationOpClass();
IRasterAnalysisEnvironment rasanaenv = interpla as IRasterAnalysisEnvironment;
rasanaenv.SetCellSize(esriRasterEnvSettingEnum.esriRasterEnvValue, ref dCell);
rasanaenv.SetExtent(esriRasterEnvSettingEnum.esriRasterEnvValue, ref extend, ref o);
IGeoDataset g_GeoDS_Raster = interpla.IDW((IGeoDataset)feades, 2, rasterrad, ref obj);
IRaster pOutRsater = (IRaster)g_GeoDS_Raster;
IRasterLayer pOutRasterlayer = new RasterLayerClass();
pOutRasterlayer.CreateFromRaster(pOutRsater);
pOutRasterlayer.Name = "时间久远程度";
PixelValue2 = Class_GetPixelValue(pOutRasterlayer);
IRasterClassifyColorRampRenderer pRClassRend = new RasterClassifyColorRampRendererClass();
IRasterRenderer pRRend = pRClassRend as IRasterRenderer;
IRaster pRaster = pOutRasterlayer.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 RgbColorClass();
pFromColor.Red = 135;//天蓝色
pFromColor.Green = 206;
pFromColor.Blue = 235;
IRgbColor pToColor = new RgbColorClass();
pToColor.Red = 124;//草坪绿
pToColor.Green = 252;
pToColor.Blue = 0;
IAlgorithmicColorRamp colorRamp = new AlgorithmicColorRampClass();
colorRamp.Size = 10;
colorRamp.FromColor = pFromColor;
colorRamp.ToColor = pToColor;
bool createColorRamp;
colorRamp.CreateRamp(out createColorRamp);
IFillSymbol fillSymbol = new SimpleFillSymbolClass();
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"));
}
pOutRasterlayer.Renderer = pRRend;
this.axMapControl1.AddLayer(pOutRasterlayer);
//两种方法的结合后
}
public static IRasterRenderer ClassifyRenderer(ESRI.ArcGIS.Geodatabase.IRasterDataset pRasterDataset)
{
try
{
//create the classify render:创建渲染器
IRasterClassifyColorRampRenderer pClassifyRenderer=new RasterClassifyColorRampRendererClass();
IRasterRenderer pRasterRenderer=(IRasterRenderer)pClassifyRenderer;
IRaster pRaster=pRasterDataset.CreateDefaultRaster();
pRasterRenderer.Raster=pRaster;
pClassifyRenderer.ClassCount=10;
pRasterRenderer.Update();
//创建颜色
IRgbColor pFromColor=new RgbColorClass();
pFromColor.Red=255;
pFromColor.Green=0;
pFromColor.Blue=0;
IRgbColor pToColor=new RgbColorClass();
pToColor.Red=0;
pToColor.Green=255;
pToColor.Blue=255;
//set the color ramp for the symbology:生成色带
IAlgorithmicColorRamp pRamp=new AlgorithmicColorRampClass();
pRamp.Size=10;
pRamp.FromColor=pFromColor;
pRamp.ToColor=pToColor;
bool pBoolColorRamp;
pRamp.CreateRamp(out pBoolColorRamp);
//create the symbol for the classes.:创建符号
IFillSymbol pFillSymbol=new SimpleFillSymbolClass();
for (int i=0;i<pClassifyRenderer.ClassCount;i++){
pFillSymbol.Color=pRamp.get_Color(i);
pClassifyRenderer.set_Symbol(i,(ISymbol)pFillSymbol);
pClassifyRenderer.set_Label(i,Convert.ToString(i));
}
return pRasterRenderer;
}
catch (System.Exception ex)
{
System.Diagnostics.Debug.WriteLine(ex.Message);
return null;
}
}
private IRasterLayer SetRsLayerClassifiedColor(IRaster pRaster)
{
IRasterClassifyColorRampRenderer pClassRen = new RasterClassifyColorRampRendererClass();
IRasterRenderer pRasRen = (IRasterRenderer)pClassRen;
//Set raster for the render and update
pRasRen.Raster = pRaster;
pClassRen.ClassCount = 9;
pRasRen.Update();
//Create a color ramp to use
//定义起点和终点颜色
IColor pFromColor = new RgbColorClass();
IRgbColor pRgbColor = (IRgbColor)pFromColor;
pRgbColor.Red = 255;
pRgbColor.Green = 200;
pRgbColor.Blue = 0;
IColor pToColor = new RgbColorClass();
pRgbColor = (IRgbColor)pToColor;
pRgbColor.Red = 0;
pRgbColor.Green = 0;
pRgbColor.Blue = 255;
//创建颜色分级
IAlgorithmicColorRamp pRamp = new AlgorithmicColorRampClass();
pRamp.Size = 9;
pRamp.FromColor = pFromColor;
pRamp.ToColor = pToColor;
bool ok = true;
pRamp.CreateRamp(out ok);
//获得栅格统计数值
IRasterBandCollection pRsBandCol = (IRasterBandCollection)pRaster;
IRasterBand pRsBand = pRsBandCol.Item(0);
pRsBand.ComputeStatsAndHist();
IRasterStatistics pRasterStatistic = pRsBand.Statistics;
double dMaxValue = pRasterStatistic.Maximum;
double dMinValue = pRasterStatistic.Minimum;
//Create symbol for the classes
IFillSymbol pFSymbol = new SimpleFillSymbolClass();
double LabelValue = Convert.ToDouble((dMaxValue - dMinValue) / 9);
for (int i = 0; i < pClassRen.ClassCount; i++)
{
pFSymbol.Color = pRamp.get_Color(i);
pClassRen.set_Symbol(i, (ISymbol)pFSymbol);
double h1 = (LabelValue * i) + dMinValue;
double h2 = (LabelValue * (i + 1)) + dMinValue;
pClassRen.set_Label(i, h1.ToString() + "-" + h2.ToString());
}
//Update the renderer and plug into layer
pRasRen.Update();
IRasterLayer pRLayer = new RasterLayerClass();
pRLayer.CreateFromRaster(pRaster);
pRLayer.Renderer = (IRasterRenderer)pClassRen;
return(pRLayer);
}
