高手们,能告诉我这个是为什么???

楼主^#

更多发布于：2006-09-05 13:19

//分类渲染（比如人口的总数） private void cmdClassBreak_Click(object sender, System.EventArgs e) { ITable pTable; ITableHistogram pTableHistogram; IHistogram pHistogram; IClassify pClassify; object dataValues; object dataFrequency; if(axMapControl1.LayerCount>0) { pGeoFeatureLayer=axMapControl1.get_Layer(0) as IGeoFeatureLayer; } pTable=pGeoFeatureLayer as ITable; pTableHistogram=new TableHistogramClass(); pHistogram=pTableHistogram as IHistogram; //取得人口总数数据 pTableHistogram.Field=strPopField; pTableHistogram.Table=pTable; pHistogram.GetHistogram( out dataValues ,out dataFrequency ); //将数据分类 pClassify=new EqualIntervalClass(); pClassify.SetHistogramData(dataValues,dataFrequency); //int ClassesCount; double[] Classes; pClassify.Classify(ref numDesiredClasses); Classes=(double[])pClassify.ClassBreaks; //ClassesCount= Classes.Length;
 IClassBreaksRenderer pClassBreaksRenderer; pClassBreaksRenderer=new ClassBreaksRendererClass(); pClassBreaksRenderer.Field=strPopField; pClassBreaksRenderer.BreakCount=4; pClassBreaksRenderer.SortClassesAscending=true;
 IHsvColor pFromColor; pFromColor=new HsvColorClass(); pFromColor.Hue=60; pFromColor.Saturation=100; pFromColor.Value=96; IHsvColor pToColor; pToColor=new HsvColorClass(); pToColor.Hue=0; pToColor.Saturation=100; pToColor.Value=96;
 IAlgorithmicColorRamp pRamp; IEnumColors pEnumColors; bool ok; pRamp=new AlgorithmicColorRampClass(); pRamp.Algorithm=ESRI.ArcGIS.Display.esriColorRampAlgorithm.esriHSVAlgorithm; pRamp.FromColor=pFromColor; pRamp.ToColor=pToColor; pRamp.Size=4; pRamp.CreateRamp(out ok); pEnumColors=pRamp.Colors; pEnumColors.Reset();
 IColor pColor; ISimpleFillSymbol pSimpleFillSymbol; long breakIndex;
 for(breakIndex=0;breakIndex<3;breakIndex++) { pColor=pEnumColors.Next(); pSimpleFillSymbol=new SimpleFillSymbolClass(); pSimpleFillSymbol.Color=pColor; pSimpleFillSymbol.Style=ESRI.ArcGIS.Display.esriSimpleFillStyle.esriSFSSolid; pClassBreaksRenderer.set_Symbol(Convert.ToInt32(breakIndex),pSimpleFillSymbol as ISymbol);//=pSimpleFillSymbol; double d=Classes[breakIndex]; pClassBreaksRenderer.set_Break(Convert.ToInt32(breakIndex),d);//=Classes;
 }
 pGeoFeatureLayer.Renderer=pClassBreaksRenderer as IFeatureRenderer;
 axMapControl1.CtlRefresh(esriViewDrawPhase.esriViewGeography,Type.Missing,Type.Missing);

 }

喜欢0 评分0

举报回复

hahaaluo 路人甲注册日期2006-08-05 发帖数146 QQ 铜币591枚威望0点贡献值0点银元0个加关注写私信	1楼^# 发布于：2006-09-05 13:21 <P>这是一个分类渲染的例子,不知道是哪个地方出了问题,总是运行不了的??</P> <P>请各位高手帮帮忙看看我是错在哪个地方了,谢谢你们了~~~~~~~~~~</P>
	举报回复(0) 喜欢(0) 评分

hsghxm

路人甲

注册日期2004-10-27
发帖数517
QQ4604052
铜币1枚
威望0点
贡献值0点
银元0个

加关注写私信

2楼^#

发布于：2006-09-05 14:34

把错误信息以及报错行贴出来贴出来再问！

MSN:hsghxm@163.com QQ:4604052 (很少用,最好别加) Email:hsghxm@163.com 我的BOLG：http://www.gisempire.com/blog/user1/864/index.htm

举报回复喜欢评分

hahaaluo 路人甲注册日期2006-08-05 发帖数146 QQ 铜币591枚威望0点贡献值0点银元0个加关注写私信	3楼^# 发布于：2006-09-05 16:01 <P> Classes=(double[])pClassify.ClassBreaks;<BR>运行到这一行就出错了 </P> <P>说是为将对象引用到对象实例还有就是单步运行时是地图变不见了是怎么回事??</P>
	举报回复(0) 喜欢(0) 评分

hahaaluo 路人甲注册日期2006-08-05 发帖数146 QQ 铜币591枚威望0点贡献值0点银元0个加关注写私信	4楼^# 发布于：2006-09-06 09:54 <P>怎么还是没人来看看我的这个呢 </P>
	举报回复(0) 喜欢(0) 评分

hsghxm

路人甲

注册日期2004-10-27
发帖数517
QQ4604052
铜币1枚
威望0点
贡献值0点
银元0个

加关注写私信

5楼^#

发布于：2006-09-06 12:26

帮助里面的VB代码你想转成c#是吧，我刚把它转了一下，测试通过，没问题 ,把代码帖出来，你对照一下，应该就没问题了！ 
 ITable pTable =m_pGeoFeatureLayer as ITable; IClassify pClassify; ITableHistogram pTableHistogram; IHistogram pHistogram; object dataFrequency,dataValues;
 pTableHistogram = new TableHistogramClass(); pHistogram = pTableHistogram as IHistogram; pTableHistogram.Field = strPopField1; pTableHistogram.Table = pTable; pHistogram.GetHistogram(out dataValues, out dataFrequency); pClassify = new EqualIntervalClass(); pClassify.SetHistogramData( dataValues, dataFrequency); double [] Classes; int numDesiredClasses = 3; pClassify.Classify(ref numDesiredClasses); Classes =(double[])pClassify.ClassBreaks; //Classes = pClassify.ClassBreaks as double[]; int ClassesCount = Classes.Length; 
 IClassBreaksRenderer pClassBreaksRenderer = new ClassBreaksRendererClass(); pClassBreaksRenderer.Field = strPopField1; pClassBreaksRenderer.BreakCount = ClassesCount; pClassBreaksRenderer.SortClassesAscending = true;
 IHsvColor pFromColor = new HsvColorClass(); pFromColor.Hue = 60 ; pFromColor.Saturation = 100; pFromColor.Value = 96;
 IHsvColor pToColor = new HsvColorClass(); pToColor.Hue = 0; pToColor.Saturation = 100; pToColor.Value = 96;
 IAlgorithmicColorRamp pRamp = new AlgorithmicColorRampClass(); IEnumColors pEnumColors; bool ok;
 pRamp.Algorithm = esriColorRampAlgorithm.esriHSVAlgorithm; pRamp.FromColor = pFromColor; pRamp.ToColor = pToColor; pRamp.Size = ClassesCount; pRamp.CreateRamp(out ok); pEnumColors = pRamp.Colors;
 IColor pColor; ISimpleFillSymbol pFillSymbol; int breakIndex;
 for(breakIndex =0;breakIndex<ClassesCount;ClassesCount++) { pColor = pEnumColors.Next(); pFillSymbol = new SimpleFillSymbolClass(); pFillSymbol.Color = pColor; pFillSymbol.Style = esriSimpleFillStyle.esriSFSSolid; pClassBreaksRenderer.set_Symbol(breakIndex, pFillSymbol as ISymbol); pClassBreaksRenderer.set_Break(breakIndex, (double)Classes[breakIndex + 1]); } m_pGeoFeatureLayer.Renderer = pClassBreaksRenderer as IFeatureRenderer; this.axMapControl1.ActiveView.PartialRefresh(esriViewDrawPhase.esriViewGeography,null,null);

MSN:hsghxm@163.com QQ:4604052 (很少用,最好别加) Email:hsghxm@163.com 我的BOLG：http://www.gisempire.com/blog/user1/864/index.htm

举报回复喜欢评分

hahaaluo 路人甲注册日期2006-08-05 发帖数146 QQ 铜币591枚威望0点贡献值0点银元0个加关注写私信	6楼^# 发布于：2006-09-07 10:20 <P>上面这位大哥 ,为什么还是同样的错误呢 ???</P> <P>可以帮忙看看吗 ??</P> <P>编译是可以通过,但是运行时就不可以了</P>
	举报回复(0) 喜欢(0) 评分

您需要登录后才可以回帖，登录或者注册

高手们,能告诉我这个是为什么???

最新喜欢：