private void ChartRenderer(IFeatureLayer pFeatLyr, Dictionary <string, IRgbColor> dicFieldAndColor)
{
IChartRenderer chartRenderer = new ChartRendererClass();
IDataStatistics dataSta = new DataStatisticsClass();
dataSta.Field = m_pTarField.Name;
dataSta.Cursor = m_pTarFeatureClass.Search(null, false) as ICursor;
double max = Double.MinValue;
foreach (string fieldName in dicFieldAndColor.Keys)
{
(chartRenderer as IRendererFields).AddField(fieldName, fieldName);
max = max > dataSta.Statistics.Maximum ? max : dataSta.Statistics.Maximum;
}
IBarChartSymbol barSyb = null;
barSyb = new BarChartSymbolClass();
(barSyb as IChartSymbol).MaxValue = max;
barSyb.Width = 6;
(barSyb as IMarkerSymbol).Size = 30;
IFillSymbol barSymbol = new SimpleFillSymbolClass();
barSymbol.Color = m_pFillColor;
(barSyb as ISymbolArray).AddSymbol(barSymbol as ISymbol);
IFillSymbol baseSymbol = new SimpleFillSymbolClass();
baseSymbol.Color = m_pOutlineColor;
chartRenderer.ChartSymbol = barSyb as IChartSymbol;
chartRenderer.BaseSymbol = baseSymbol as ISymbol;
m_pTarGeoFeatureLayer.Renderer = chartRenderer as IFeatureRenderer;
chartRenderer.CreateLegend();
frmMainOper(OperationType.RefreshMapCtrl);
frmMainOper(OperationType.UpdateTOCCtrl);
}
//创建柱状专题图
public void CreateBarRenderer(int layerID, string[] fields)
{
// 得到地图服务下的ArcObjects map对象
ESRI.ArcGIS.Server.IServerContext pServerContext = GetServerContext();
ESRI.ArcGIS.Carto.IMapServer mapServer = (ESRI.ArcGIS.Carto.IMapServer)pServerContext.ServerObject;
ESRI.ArcGIS.Carto.IMapServerObjects2 mapServerObjects = (ESRI.ArcGIS.Carto.IMapServerObjects2)mapServer;
string mapName = mapServer.DefaultMapName;
ESRI.ArcGIS.Carto.IMap aoMap = mapServerObjects.get_Map(mapName);
ESRI.ArcGIS.Carto.ILayer pLayer = aoMap.get_Layer(layerID);//得到图层
ESRI.ArcGIS.Carto.IGeoFeatureLayer pGeoLayer = pLayer as IGeoFeatureLayer;
//设置专题图元素的属性名称列表
IChartRenderer pChartRender = pServerContext.CreateObject("esriCarto.ChartRenderer") as IChartRenderer;
IRendererFields pRenderFields = pChartRender as IRendererFields;
foreach (string var in fields)
{
pRenderFields.AddField(var, var);
}
//实例化图表对象并取得元素指定属性的最大值
IBarChartSymbol pBarChartSymbol = pServerContext.CreateObject("esriDisplay.BarChartSymbol") as IBarChartSymbol;
IChartSymbol pChartSymbol = pBarChartSymbol as IChartSymbol;
pChartSymbol.MaxValue = GetStaMaxMin(fields, pGeoLayer)[0];
pBarChartSymbol.Width = 8;
IMarkerSymbol pMarkerSymbol = pBarChartSymbol as IMarkerSymbol;
pMarkerSymbol.Size = 50;
//设置柱状图每列填充效果
ISymbolArray pSymbolArray = pBarChartSymbol as ISymbolArray;
Random ranColor = new Random();
for (int i = 0; i < fields.Length; i++)
{
IFillSymbol pFillSymbol = pServerContext.CreateObject("esriDisplay.SimpleFillSymbol") as IFillSymbol;
pFillSymbol.Color = GetRGB(ranColor.Next(255), ranColor.Next(255), ranColor.Next(255), pServerContext);
pSymbolArray.AddSymbol((ISymbol)pFillSymbol);
}
//设置地图图层背景
ESRI.ArcGIS.Display.ISimpleFillSymbol pFSymbol = pServerContext.CreateObject("esriDisplay.SimpleFillSymbol") as ESRI.ArcGIS.Display.SimpleFillSymbol;
pFSymbol.Color = GetRGB(239, 228, 249, pServerContext);
pChartRender.BaseSymbol = pFSymbol as ISymbol;
//应用柱状专题到指定图层
pChartRender.ChartSymbol = pBarChartSymbol as IChartSymbol;
pChartRender.Label = "Test";
pChartRender.UseOverposter = false;
pChartRender.CreateLegend();
pGeoLayer.Renderer = pChartRender as IFeatureRenderer;
//刷新地图显示图表及图例
mapServerObjects.RefreshServerObjects();
Map1.RefreshResource("MapResourceItem0");
Toc1.BuddyControl = "Map1";
//Toc1.Refresh();
Map1.Refresh();
pServerContext.ReleaseContext();
}
