ArcEngine 专题图制作.docx

ArcEngine 专题图制作（C#）上一篇 / 下一篇 ?2010-06-24 08:28:50 / 个人分类：ArcEngine查看( 413 ) / 评论( 0 ) / 评分( 0 / 0 )点密度图、分层设色图/等级图、单值图、柱状图、饼状图的实现代码?C#?private void 点密度图ToolStripMenuItem_Click(object sender, EventArgs e)??????? {??????????? //获取当前图层，并把它设置成IGeoFeatureLayer的实例??????????? IMap pMap = axMapControl1.Map;??????????? ILayer pLayer = pMap.get_Layer(0) as IFeatureLayer;??????????? IFeatureLayer pFeatureLayer = pLayer as IFeatureLayer;??????????? IGeoFeatureLayer pGeoFeatureLayer = pLayer as IGeoFeatureLayer;??????????? //获取图层上的feature??????????? IFeatureClass pFeatureClass = pFeatureLayer.FeatureClass;??????????? IFeatureCursor pFeatureCursor = pFeatureClass.Search(null, false);??????????? IFeature pFeature = pFeatureCursor.NextFeature();??????????? ///////////////////////?????????? ??????????? ///////////////////////////////////////////////////////////////////??????????? //定义点密度图渲染组件??????????? IDotDensityRenderer DotDensityRenderer = new DotDensityRendererClass();??????????? //定义点密度图渲染组件对象的渲染字段对象??????????? IRendererFields flds = (IRendererFields)DotDensityRenderer;??????????? flds.AddField(FID, FID);??????????? //flds.AddField(Shape, Shape);??????????? //定义点密度图渲染得符号对象??????????? IDotDensityFillSymbol ddSym = new DotDensityFillSymbolClass();??????????? IRgbColor BackColor = new RgbColorClass();??????????? BackColor.Red = 234;??????????? BackColor.Blue = 128;??????????? BackColor.Green = 220;??????????? IRgbColor SymbolColor = new RgbColorClass();??????????? SymbolColor.Red = 234;??????????? SymbolColor.Blue = 128;??????????? SymbolColor.Green = 220;??????????? ////点密度图渲染背景颜色??????????? //ddSym.BackgroundColor = BackColor;??????????? ddSym.DotSize =8;??????????? ddSym.FixedPlacement = true;??????????? //ddSym.Color = SymbolColor;??????????? ILineSymbol pLineSymbol=new CartographicLineSymbolClass();??????????? ddSym.Outline = pLineSymbol;??????????? //定义符号数组??????????? ISymbolArray symArray = (ISymbolArray)ddSym;??????????? //添加点密度图渲染的点符号到符号数组中去??????????? ISimpleMarkerSymbol