SimpleRenderer着色法渲染地图-优快云博客

本文介绍了一种使用ArcGIS进行地图渲染的方法。通过C#代码实现了地图层的透明度渲染，包括设定填充符号的颜色及边框颜色，以及指定透明度字段。

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代码：

private void button2_Click(object sender, EventArgs e) { IActiveView pActiveView; IGeoFeatureLayer pGeoFeatureL; pActiveView = this.axMapControl1.ActiveView; IMap pMap = this.axMapControl1.Map; pMap.ReferenceScale = 0;//设定label是否随地图缩放而变化 pGeoFeatureL = pMap.get_Layer(4) as IGeoFeatureLayer; IFillSymbol pSimpleFillS; ILineSymbol pLineSymbol; pSimpleFillS = new SimpleFillSymbolClass(); pSimpleFillS.Color = getRGB(120, 110, 200); pLineSymbol = new SimpleLineSymbolClass(); pLineSymbol.Color = getRGB(255, 0, 0); pLineSymbol.Width = 1; pSimpleFillS.Outline = pLineSymbol; ISimpleRenderer pSimpleRenderer; pSimpleRenderer = new SimpleRendererClass(); pSimpleRenderer.Symbol = (ISymbol)pSimpleFillS; pSimpleRenderer.Description = "USA"; pSimpleRenderer.Label = "简单渲染"; ITransparencyRenderer pTransRenderer; pTransRenderer = pSimpleRenderer as ITransparencyRenderer; pTransRenderer.TransparencyField = "地区"; pGeoFeatureL.Renderer = pTransRenderer as IFeatureRenderer; pActiveView.PartialRefresh(esriViewDrawPhase.esriViewGeography, null, null); }