zoukankan      html  css  js  c++  java

  • 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
    


    

    
    
                
    
                
              
    • 
              
    
              
  • 

                相关阅读:
    
                
                  PyQt5对话框
                    
    PyQt5基础控件
                    
    PyQt5主界面
                    
    PyQt5入门
                    
    ioctl太多虚拟内存不够用
                    
    code principles
                    
    Error: watch ENOSPC
                    
    intelJ
                    
    cas
                    
    C的函数指针的作用，以及其赋值是弱类型的
                    
                        
              
    • 
              
    
              
  • 
                原文地址：https://www.cnblogs.com/lovebay/p/5026381.html
              
    • 

            

          



          
          

            

            

          

        

      

      



      

      

        

          Copyright © 2011-2022 走看看