栅格数据渲染

1、using System;using ESRI. ArcGIS.Carto;using ESRI. ArcGIS ? DataSourcesRaster:using ESRI. ArcGIS .Display;using ESRI. ArcGIS ? Geodatabase;using ESRI. ArcGIS ? esriSystem;using DevComponents ? DotNetBar ? Controls:namespace CASC? Class/summary)/ 渲染栅格图层/summary)class RenderRasterLayerILayer pLayerR;pu

2、blic RenderRasterLayer(ILayer pLayer) this ? pLayerR = pLayer;/summary)/ RGB 渲染，必须为多波段影像/public void RGBRenderer(int bandred, int bandgreen, int bandblue, int alpha, int styleindex, int param, bool backgorund, IColor pcolor)IRasterLayer rasterLayer = this ? pLayerR as IRasterLayer;IRaster raster = r

3、asterLayer.Raster;IRasterBandCo11ection bandCol = raster as IRasterBandCo11ection;if (bandCo1. Count T)rasterRGBRen. UseRedBand = true;rasterRGBRen. RedBandlndex = bandred;elserasterRGBRen. UseRedBand = false;if (bandgreen T)rasterRGBRen. UseGreenBand = true;rasterRGBRen. GreenBandlndex = bandgreen;

4、elseif (bandblue T) rasterRGBRen. UseBlueBand = true; rasterRGBRen. BlueBandlndex = bandblue; elserasterRGBRen. UseBlueBand = false;if (alpha 1)rasterRGBRen. UseAlphaBand = true; rasterRGBRen. AlphaBandlndex = alpha;elseIRasterStretch2 rasterStretchType = (IRasterStretch2)rasterRGBRen; if (styleinde

5、x =0)rasterStretchType ? StretchType =esriRasterStretchTypesEnum ? esriRasterStretch_StandardDeviations;rasterStretchType ? StandardDeviationsPagm = param;else if (styleindex = 1)rasterStretchTypeStretchType =esriRasterStretchTypesEnumesriRasterStretch_HistogramEqualize;else if (styleindex 二二 2)rast

6、erStretchTypeStretchType =esriRasterStretchTypesEnumesriRasterStretch_HistogramSpecification;else if (styleindex = 3)rasterStretchType ? StretchType = esriRasterStretchTypesEnum ? esriRasterStretch_MinimumMaximum;elserasterStretchType ? StretchType =esriRasterStretchTypesEnum ? esriRasterStretch_NON

7、E;rasterStretchType .Invert = true;rasterStretchType .Background = backgorund;rasterStretchType ? BdckgroundColor = pcolor;rasterRen. Update ();/summary)/ 分类色带渲染/ 分类数 / param/public void ClassifyColorRampRenderer( IColorRamp colorRamp, string classfield, DataGridviewX datagridview)tryIRasterLayer pR

8、asterLayer = this? pLayerR as IRasterLayer;IRaster raster = pRasterLayer.Raster;IRasterRenderer pRasterRenderer = newRasterClassifyColorRampRendererClass();pRasterRenderer .Raster = raster;IRasterClassifyColorRampRenderer classifyRenderer = pRasterRendereras IRasterClassifyColorRampRenderer;classify

9、Renderer ? ClassCount = classcount: classifyRenderer .ClassField = classfield;Celfor (int i二 0; i datagridview ? RowCount; i+)classifyRenderer ? set_Break(i, double ? Parse ( datagridview. Rowsi ls0. Value. ToS tring ():pRasterRenderer ? Update();colorRamp .Size = 15;bool pOk;colorRamp ? CreateRamp(

10、out pOk);/create symbol for the classesIFillSymbol fillSymbol = new SimpleFillSymbolClass();for (int i 二 0; i classifyRenderer ? ClassCountT; i+) fillSymbol ? Color = colorRamp ? get_Color(i);classifyRenderer ? setASymbol(i, (ISymbol)fillSymbol);classifyRenderer ? set_Label(i, class if yRenderer ? g

11、et_B:re3k(i) ? ToStringO + + datagridview ? Rowsi ? Cells 1 ? Value. ToStringO) pRasterLayer ? Rendered = classifyRenderer as IRasterRenderer; catch/summary)/ 色带渲染，类似于拉伸渲染 , 这里没找到相应方法/summary) public void ColorMapRenderer() trypLayerR as IRasterLayer;IRasterLayer pRasterLayer = thisIRasterRenderer p

12、RasterRenderer = new RasterColormapRendererClass();pRasterRenderer .Raster = pRasterLayer .Raster;catch/ 唯一值渲染/public void UniqueValueRenderer(IColorRamp colorRamp, string renderfiled)trypLayerR as IRasterLayer;IRasterLayer pRasterLayer = thisIRasterRenderer pRasterRenderer = uniqueValueRenderer asI

13、RasterRenderer;IUniqueValues uniqueValues = new UniqueValuesClass();IRasterCalcUniqueValues calcUniqueValues = newRasterCalcUniqueValuesClass();calcUniqueValues ? AddFromRaster(pRasterLayer ? Raster, 0, uniqueValues);IRasterRendererUniqueValues renderUniqueValues =uniqueValueRenderer as IRasterRende

14、rerUniqueValues:FieldrenderUniqueValues .UniqueValues = uniqueValues: uniqueValueRenderer= renderfiled; colorRamp .Size = uniqueValues .Count; bool pOk; colorRampGreateRamp(out pOk); IRasterRendererColorRamp pRasterRendererColorRamp = uniqueValueRenderer as IRasterRendererColorRamp; pRasterRendererC

15、olorRampColorRamp = colorRamp; pRasterRenderer ? Update();catch/ 拉伸渲染/param name 二 colorRamp 色带 public void StretchColorRampRenderer(IColorRamp colorRamp, int bandindex, bool background, int strechstyle, int parm, IColor pcolor)tryIRasterLayer pRasterLayer = this ? pLayerR as IRasterLayer;IRasterRen

16、derer pRasterRenderer = new RasterStretchColorRampRendererClass();IRasterStretchColorRampRenderer pRasterStretchRenderer = pRasterRenderer as IRasterStretchColorRampRenderer;IRasterStretch2 rasterStretchType = pRasterStretchRenderer as IRasterStretch2;if ( strechstyle 二二 0)rasterStretchType ? StretchType =esriRasterStretchTypesEnum ? esriRasterStretch_StandardDeviations;rasterStre