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Arc Engine 三维坡度坡向

第一次写博客，已经完成自己的二开大作业，之前坡度坡向在网上一直搜不到，也当是记录一下。

效果图

原Dem

点击菜单栏的选项
坡度分析结果

坡向分析结果图

在窗体放了一下下拉菜单可以选择和获取你选择的图层

坡向坡向代码如下

//坡度
IRasterLayer pRasterLayer = new RasterLayerClass();
                IGeoDataset pGeoDataset;
                int i = comboBox4.SelectedIndex;
                object zFactor;
                pRasterLayer = (IRasterLayer)mainMapControl.get_Layer(i);
                string layerN = mainMapControl.get_Layer(2).Name;
                IRaster pIRaster = pRasterLayer.Raster;
                ISurfaceOp pSurfaceOp = new RasterSurfaceOpClass();
                zFactor = 1;
               
                    pGeoDataset = pSurfaceOp.Slope((IGeoDataset)pIRaster, esriGeoAnalysisSlopeEnum.esriGeoAnalysisSlopeDegrees, ref zFactor);
                 
                    IRasterLayer pRasterLayer1 = new RasterLayerClass();

                    IRaster praster = new Raster();

                    praster = (IRaster)pGeoDataset;
                    ShowRasterResult(pGeoDataset, "坡度");
                    mainMapControl.ActiveView.PartialRefresh(esriViewDrawPhase.esriViewGeography, null, null);
            axTOCControl1.Update();




//坡向
            IRasterLayer pRasterLayer = new RasterLayerClass();
            IGeoDataset pGeoDataset;
            int i = comboBox4.SelectedIndex;
            object zFactor;
            pRasterLayer = (IRasterLayer)mainMapControl.get_Layer(i);
            string layerN = mainMapControl.get_Layer(2).Name;
            IRaster pIRaster = pRasterLayer.Raster;
            ISurfaceOp pSurfaceOp = new RasterSurfaceOpClass();
            //zFactor = 1;

            pGeoDataset = pSurfaceOp.Aspect((IGeoDataset)pIRaster);

            IRasterLayer pRasterLayer1 = new RasterLayerClass();

            IRaster praster = new Raster();

            praster = (IRaster)pGeoDataset;
            ShowRasterResult(pGeoDataset, "坡向");
            mainMapControl.ActiveView.PartialRefresh(esriViewDrawPhase.esriViewGeography, null, null);
            axTOCControl1.Update();