时间:2016-2-24 作者:悬浮的青春 分类: gis二次开发
来自:http://zhihu.esrichina.com.cn/?/question/6725
【解决办法】:
可以通过设置背景值以及背景色解决此问题。
对于三波段进行RDB渲染的影像可以使用下面代码:
IRasterRenderer RR = RL.Renderer;
IRasterRGBRenderer rasterRGBRenderer = null;
if (RR is IRasterRGBRenderer)
rasterRGBRenderer = RR as IRasterRGBRenderer;
RR.Update();
rasterRGBRenderer.RedBandIndex = 0;
rasterRGBRenderer.GreenBandIndex = 1;
rasterRGBRenderer.BlueBandIndex = 2;
IRgbColor rgb = new RgbColorClass();
rgb.NullColor = true;
IRasterStretch2 RS = rasterRGBRenderer as IRasterStretch2; // IRasterStretch无法设置数组,需用2
double background =
{
0, 0, 0
};
RS.Background = true;
RS.BackgroundValue = background as object;
RS.BackgroundColor = rgb as IColor;
axMapControl1.Refresh();
对于单波段影像:
单波段: IRasterRenderer RR = RL.Renderer;
IRasterStretchColorRampRenderer RSC = null;
if (RR is IRasterStretchColorRampRenderer)
RSC = RR as IRasterStretchColorRampRenderer;
RR.Update();
RSC.BandIndex = 0;
IRgbColor rgb = new RgbColorClass();
rgb.NullColor = true;
IRasterStretch RS = RSC as IRasterStretch;
RS.Background = true;
RS.set_BackgroundValues(0);
RS.BackgroundColor = rgb as IColor;
axMapControl1.Refresh();
标签: arcgis二次开发