/// <summary>
/// 拉伸渲染raster图层
/// </summary>
/// <params name="pRLayer">raster图层</params>
/// <remarks></remarks>
public void UsingRasterStretchColorRampRender(IRasterLayer pRLayer)
{
//获得图层
IRaster pRaster = default(IRaster);
pRaster = pRLayer.Raster;
//创建渲染并转换到栅格渲染
IRasterStretchColorRampRenderer pStretchRen = default(IRasterStretchColorRampRenderer);
pStretchRen = new RasterStretchColorRampRenderer();
IRasterRenderer pRasRen = default(IRasterRenderer);
pRasRen = (IRasterRenderer)pStretchRen;
//栅格渲染赋值和更新
pRasRen.Raster = pRaster;
pRasRen.Update();
//定义起止颜色
IRgbColor pFromColor = new RgbColorClass();
pFromColor.Red = 0;
pFromColor.Green = 255;
pFromColor.Blue = 0;
IRgbColor pToColor = new RgbColorClass();
pToColor.Red = 255;
pToColor.Green = 0;
pToColor.Blue = 0;
//创建颜色条
IAlgorithmicColorRamp pRamp = new AlgorithmicColorRamp();
pRamp.Size = 255;
pRamp.FromColor = pFromColor;
pRamp.ToColor = pToColor;
bool bOK;
pRamp.CreateRamp(out bOK);
//插入颜色条和选择渲染波段
pStretchRen.BandIndex = 0;
pStretchRen.ColorRamp = pRamp;
//用新的设置更新渲染并赋值给图层
pRasRen.Update();
pRLayer.Renderer = (IRasterRenderer)pStretchRen;
//释放内存
pRLayer = null;
pRaster = null;
pStretchRen = null;
pRasRen = null;
pRamp = null;
pToColor = null;
pFromColor = null;
}
/// <summary>
/// 拉伸渲染raster图层
/// </summary>
/// <params name="pRLayer">raster图层</params>
/// <remarks></remarks>
public void UsingRasterStretchColorRampRender(IRasterLayer pRLayer)
{
//获得图层
IRaster pRaster = default(IRaster);
pRaster = pRLayer.Raster;
//创建渲染并转换到栅格渲染
IRasterStretchColorRampRenderer pStretchRen = default(IRasterStretchColorRampRenderer);
pStretchRen = new RasterStretchColorRampRenderer();
IRasterRenderer pRasRen = default(IRasterRenderer);
pRasRen = (IRasterRenderer)pStretchRen;
//栅格渲染赋值和更新
pRasRen.Raster = pRaster;
pRasRen.Update();
//定义起止颜色
IRgbColor pFromColor = new RgbColorClass();
pFromColor.Red = 0;
pFromColor.Green = 255;
pFromColor.Blue = 0;
IRgbColor pToColor = new RgbColorClass();
pToColor.Red = 255;
pToColor.Green = 0;
pToColor.Blue = 0;
//创建颜色条
IAlgorithmicColorRamp pRamp = new AlgorithmicColorRamp();
pRamp.Size = 255;
pRamp.FromColor = pFromColor;
pRamp.ToColor = pToColor;
bool bOK;
pRamp.CreateRamp(out bOK);
//插入颜色条和选择渲染波段
pStretchRen.BandIndex = 0;
pStretchRen.ColorRamp = pRamp;
//用新的设置更新渲染并赋值给图层
pRasRen.Update();
pRLayer.Renderer = (IRasterRenderer)pStretchRen;
//释放内存
pRLayer = null;
pRaster = null;
pStretchRen = null;
pRasRen = null;
pRamp = null;
pToColor = null;
pFromColor = null;
}
public static IRasterLayer SetStretchRenderer(IRaster pRaster)
{
try
{
//创建着色类和QI栅格着色
IRasterStretchColorRampRenderer pStretchRen = new RasterStretchColorRampRenderer();
IRasterRenderer pRasRen = pStretchRen as IRasterRenderer;
//为着色和更新设置栅格数据
pRasRen.Raster = pRaster;
pRasRen.Update();
//定义起点和终点颜色
IColor pFromColor = new RgbColor();
IRgbColor pRgbColor = pFromColor as IRgbColor;
pRgbColor.Red = 255;
pRgbColor.Green = 0;
pRgbColor.Blue = 0;
IColor pToColor = new RgbColor();
pRgbColor = pToColor as IRgbColor;
pRgbColor.Red = 0;
pRgbColor.Green = 255;
pRgbColor.Blue = 0;
//创建颜色分级
IAlgorithmicColorRamp pRamp = new AlgorithmicColorRamp();
pRamp.Size = 255;
pRamp.FromColor = pFromColor;
pRamp.ToColor = pToColor;
bool ok = true;
pRamp.CreateRamp(out ok);
//把颜色分级插入着色中并选择一个波段
pStretchRen.BandIndex = 0;
pStretchRen.ColorRamp = pRamp;
pRasRen.Update();
IRasterLayer pRLayer = new RasterLayer();
pRLayer.CreateFromRaster(pRaster);
pRLayer.Renderer = pStretchRen as IRasterRenderer;
return(pRLayer);
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
return(null);
}
}
/// <summary>
/// Generates a raster renderer using the provided settings
/// </summary>
/// <returns>IRasterRenderer</returns>
private static IRasterRenderer GenerateRasterRenderer(IRaster pRaster)
{
IRasterStretchColorRampRenderer pStretchRen = new RasterStretchColorRampRenderer();
//IRasterUniqueValueRenderer pStretchRen = new RasterUniqueValueRenderer();
IRasterRenderer pRasRen = (IRasterRenderer)pStretchRen;
pRasRen.Raster = pRaster;
pRasRen.Update();
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 = 0;
IAlgorithmicColorRamp pRamp = new AlgorithmicColorRamp();
pRamp.Size = 255;
pRamp.FromColor = pFromColor;
pRamp.ToColor = pToColor;
bool bOK;
pRamp.CreateRamp(out bOK);
pStretchRen.BandIndex = 0;
pStretchRen.ColorRamp = pRamp;
pRasRen.Update();
pRaster = null;
pRasRen = null;
pRamp = null;
pToColor = null;
pFromColor = null;
return((IRasterRenderer)pStretchRen);
}
private void btnStretch_Click(object sender, EventArgs e)
{
IMap map = axMapControl1.ActiveView.FocusMap;
IRasterLayer rLayer = map.get_Layer(0) as IRasterLayer;
IRaster raster = rLayer.Raster;
IRasterStretchColorRampRenderer stretchRen = new RasterStretchColorRampRenderer();
IRasterRenderer rasRen = stretchRen as IRasterRenderer;
rasRen.Raster = raster;
rasRen.Update();
IRgbColor fromColor = new RgbColor();
fromColor.Red = 255;
fromColor.Green = 0;
fromColor.Blue = 0;
IRgbColor toColor = new RgbColor();
toColor.Red = 0;
toColor.Green = 255;
toColor.Blue = 0;
IAlgorithmicColorRamp ramp = new AlgorithmicColorRamp();
ramp.Size = 255;
ramp.FromColor = fromColor;
ramp.ToColor = toColor;
bool bTrue = true;
//Special syntax
ramp.CreateRamp(out bTrue);
//plug this colorramp ubti renderer and select a band
stretchRen.BandIndex = 1;//0
stretchRen.ColorRamp = ramp;
rasRen.Update();
rLayer.Renderer = stretchRen as IRasterRenderer;
axMapControl1.ActiveView.Refresh();
axTOCControl1.Update();
}
public static IRasterStretchColorRampRenderer RasterStretchRenderer(IRasterLayer irasterLayer_0)
{
bool flag;
IRasterStretchColorRampRenderer rasterStretchColorRampRenderer;
try
{
IRasterStretchColorRampRenderer rasterStretchColorRampRendererClass =
new RasterStretchColorRampRenderer();
IRasterRenderer raster = (IRasterRenderer)rasterStretchColorRampRendererClass;
raster.Raster = irasterLayer_0.Raster;
raster.Update();
rasterStretchColorRampRendererClass.BandIndex = 0;
IAlgorithmicColorRamp algorithmicColorRampClass = new AlgorithmicColorRamp();
IColor rgbColorClass = new RgbColor();
(rgbColorClass as IRgbColor).Red = 255;
(rgbColorClass as IRgbColor).Red = 0;
(rgbColorClass as IRgbColor).Green = 0;
(rgbColorClass as IRgbColor).Blue = 0;
IColor color = new RgbColor();
(color as IRgbColor).Red = 255;
(color as IRgbColor).Green = 255;
(color as IRgbColor).Blue = 255;
algorithmicColorRampClass.Size = 255;
algorithmicColorRampClass.FromColor = rgbColorClass;
algorithmicColorRampClass.ToColor = color;
algorithmicColorRampClass.CreateRamp(out flag);
rasterStretchColorRampRendererClass.ColorRamp = algorithmicColorRampClass;
raster.Update();
rasterStretchColorRampRenderer = raster as IRasterStretchColorRampRenderer;
}
catch (Exception exception)
{
Debug.WriteLine(exception.Message);
rasterStretchColorRampRenderer = null;
}
return(rasterStretchColorRampRenderer);
}
public static IRasterRenderer CreateContinuousRenderer(Raster gRaster, IColorRamp pColorRamp, bool bInvert = false)
{
try
{
gRaster.ComputeStatistics();
Dictionary <string, decimal> stats = gRaster.GetStatistics();
double rMin = (double)stats["min"];
double rMax = (double)stats["max"];
RasterStretchColorRampRenderer stretchRenderer = new RasterStretchColorRampRenderer();
IRasterRenderer rasterRenderer = (IRasterRenderer)stretchRenderer;
IRasterDataset rasterDataset = ArcMapUtilities.GetRasterDataset(gRaster);
IRaster raster = rasterDataset.CreateDefaultRaster();
rasterRenderer.Raster = raster;
IRasterRendererColorRamp pRenderColorRamp = (IRasterRendererColorRamp)rasterRenderer;
pRenderColorRamp.ColorRamp = pColorRamp;
int iRound = GetMagnitude(rMin);
stretchRenderer.LabelHigh = Math.Round(rMax, Math.Abs(iRound)).ToString();
stretchRenderer.LabelLow = Math.Round(rMin, Math.Abs(iRound)).ToString();
if (bInvert)
{
IRasterStretch2 pStretch = (IRasterStretch2)stretchRenderer;
pStretch.Invert = true;
}
rasterRenderer.Update();
return(rasterRenderer);
}
catch (Exception ex)
{
System.Diagnostics.Debug.WriteLine(ex.Message);
return(null);
}
}
public static void UsingRasterStretchColorRampRenderer(IRasterLayer irasterLayer_0)
{
bool flag;
IRaster raster = irasterLayer_0.Raster;
IRasterStretchColorRampRenderer renderer = new RasterStretchColorRampRenderer();
IRasterRenderer renderer2 = renderer as IRasterRenderer;
renderer2.Raster = raster;
renderer2.Update();
IColor color = ColorManage.CreatColor(255, 0, 0);
IColor color2 = ColorManage.CreatColor(0, 255, 0);
IAlgorithmicColorRamp ramp = new AlgorithmicColorRamp
{
Size = 255,
FromColor = color,
ToColor = color2
};
ramp.CreateRamp(out flag);
renderer.BandIndex = 0;
renderer.ColorRamp = ramp;
renderer2.Update();
irasterLayer_0.Renderer = renderer as IRasterRenderer;
}
private void MultiBandsStretchRender(ILayer pLayerR, int BandRenderNumber, IColorRamp colorRamp)
{
//Get raster input from layer
IRasterLayer pRLayer = (IRasterLayer)pLayerR;
IRaster pRaster = pRLayer.Raster;
//Create renderer and QI RasterRenderer
IRasterStretchColorRampRenderer pStretchRen = new RasterStretchColorRampRenderer();
IRasterRenderer pRasRen;
pRasRen = (IRasterRenderer)pStretchRen;
//Set raster for the renderer and update
pRasRen.Raster = pRaster;
pRasRen.Update();
// Plug this colorramp into renderer and select a band
pStretchRen.BandIndex = BandRenderNumber;
pStretchRen.ColorRamp = colorRamp;
//Update the renderer with new settings and plug into layer
pRasRen.Update();
pRLayer.Renderer = (IRasterRenderer)pStretchRen;
}
/// <summary>
/// Generates a raster renderer using the provided settings
/// </summary>
/// <returns>IRasterRenderer</returns>
private static IRasterRenderer GenerateRasterRenderer(IRaster pRaster)
{
IRasterStretchColorRampRenderer pStretchRen = new RasterStretchColorRampRenderer();
//IRasterUniqueValueRenderer pStretchRen = new RasterUniqueValueRenderer();
IRasterRenderer pRasRen = (IRasterRenderer)pStretchRen;
pRasRen.Raster = pRaster;
pRasRen.Update();
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 = 0;
IAlgorithmicColorRamp pRamp = new AlgorithmicColorRamp();
pRamp.Size = 255;
pRamp.FromColor = pFromColor;
pRamp.ToColor = pToColor;
bool bOK;
pRamp.CreateRamp(out bOK);
pStretchRen.BandIndex = 0;
pStretchRen.ColorRamp = pRamp;
pRasRen.Update();
pRaster = null;
pRasRen = null;
pRamp = null;
pToColor = null;
pFromColor = null;
return (IRasterRenderer)pStretchRen;
}
