ArcGIS Engine DEM拉伸渲染

从符号库中取出渲染使用的色带对象IColorRamp（也可以自己定义色带内容）

 

[csharp] view plaincopyprint?
  1. <pre name="code" class="csharp">IStyleGallery pSG = new ServerStyleGalleryClass();  
  2. IStyleGalleryStorage pSGS = pSG as IStyleGalleryStorage;  
  3. try  
  4. {  
  5.     pSGS.AddFile(Application.StartupPath + "\\ESRI.ServerStyle");  
  6. }  
  7. catch (Exception err)  
  8. {  
  9.     MessageBox.Show(err.Message, "系统提示", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);  
  10. }  
  11.   
  12. IEnumStyleGalleryItem pMarkerSymbolEnum = pSG.get_Items("Color Ramps", Application.StartupPath+"\\ESRI.ServerStyle", "");  
  13. pMarkerSymbolEnum.Reset();  
  14. IStyleGalleryItem pItem = pMarkerSymbolEnum.Next();  
  15. while (pItem != null)  
  16. {  
  17.     if (pItem.Name == "Elevation #1")  
  18.     {  
  19.         pColorRamp = pItem.Item as IColorRamp;  
  20.         break;  
  21.     }  
  22.     pItem = pMarkerSymbolEnum.Next();  
  23. }  
<pre name="code" class="csharp">IStyleGallery pSG = new ServerStyleGalleryClass();
IStyleGalleryStorage pSGS = pSG as IStyleGalleryStorage;
try
{
    pSGS.AddFile(Application.StartupPath + "\\ESRI.ServerStyle");
}
catch (Exception err)
{
    MessageBox.Show(err.Message, "系统提示", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
}

IEnumStyleGalleryItem pMarkerSymbolEnum = pSG.get_Items("Color Ramps", Application.StartupPath+"\\ESRI.ServerStyle", "");
pMarkerSymbolEnum.Reset();
IStyleGalleryItem pItem = pMarkerSymbolEnum.Next();
while (pItem != null)
{
    if (pItem.Name == "Elevation #1")
    {
        pColorRamp = pItem.Item as IColorRamp;
        break;
    }
    pItem = pMarkerSymbolEnum.Next();
}


使用取得的ColorRamp对象渲染DEM






[csharp] view plaincopyprint?




    

  1. IRasterLayer pRasterLayr = axMapControl1.get_Layer(0) as IRasterLayer;  
    2. 

  2.   
    3. 

  3. IRasterStretchColorRampRenderer pStretchRenderer = new RasterStretchColorRampRendererClass();  
    4. 

  4. IRasterRenderer pRasterRenderer = (IRasterRenderer)pStretchRenderer;  
    5. 

  5. IRaster pRaster = pRasterLayr.Raster;  
    6. 

  6. pRasterRenderer.Raster = pRaster;  
    7. 

  7. pRasterRenderer.Update();  
    8. 

  8. pStretchRenderer.BandIndex = 0;  
    9. 

  9. pStretchRenderer.ColorRamp = pColorRamp;  
    10. 

  10. IRasterStretch pStretchType = (IRasterStretch)pRasterRenderer;  
    11. 

  11. pStretchType.StretchType = esriRasterStretchTypesEnum.esriRasterStretch_StandardDeviations;  
    12. 

  12. pStretchType.StandardDeviationsParam = 2.5;  
    13. 

  13.   
    14. 

  14. pRasterLayr.Renderer = pRasterRenderer;  
    15. 

  15. axMapControl1.Refresh();  
    16. 

  16. axTOCControl1.SetBuddyControl(axMapControl1);  
    17. 

  17. axTOCControl1.Update();  
    18. 

  18. axTOCControl1.Refresh();  
    19. 



IRasterLayer pRasterLayr = axMapControl1.get_Layer(0) as IRasterLayer;

IRasterStretchColorRampRenderer pStretchRenderer = new RasterStretchColorRampRendererClass();
IRasterRenderer pRasterRenderer = (IRasterRenderer)pStretchRenderer;
IRaster pRaster = pRasterLayr.Raster;
pRasterRenderer.Raster = pRaster;
pRasterRenderer.Update();
pStretchRenderer.BandIndex = 0;
pStretchRenderer.ColorRamp = pColorRamp;
IRasterStretch pStretchType = (IRasterStretch)pRasterRenderer;
pStretchType.StretchType = esriRasterStretchTypesEnum.esriRasterStretch_StandardDeviations;
pStretchType.StandardDeviationsParam = 2.5;

pRasterLayr.Renderer = pRasterRenderer;
axMapControl1.Refresh();
axTOCControl1.SetBuddyControl(axMapControl1);
axTOCControl1.Update();
axTOCControl1.Refresh();


效果如下图所示


 








            

            
posted @ 
2015-12-07 16:07 
玥茹苟 
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