ArcEngine c#开发 专题图制作 （零碎）

先写一个RGB颜色构造器。

       private IRgbColor GetRGBColor(int pRed, int pGreen, int pBlue)        {            IRgbColor pRGB;            pRGB = new RgbColorClass();            pRGB.Red = pRed;            pRGB.Green = pGreen;            pRGB.Blue = pBlue;            pRGB.UseWindowsDithering = true;            return pRGB;        }

柱状专题图

 private void 柱状专题图ToolStripMenuItem_Click(object sender, EventArgs e)        {            IGeoFeatureLayer layer;            try            {                IChartRenderer pChartRenderer = new ChartRendererClass() as IChartRenderer;                IRendererFields pRendererField = (IRendererFields)pChartRenderer;                pRendererField.AddField("AGE_UNDER5", "AGE_UNDER5");                pRendererField.AddField("AGE_5_17", "AGE_5_17");                pRendererField.AddField("AGE_18_64", "AGE_18_64");                pRendererField.AddField("AGE_65_UP", "AGE_65_UP");                IBarChartSymbol pBarChartSymbol = (IBarChartSymbol)new BarChartSymbolClass();                pBarChartSymbol.Width = 6;                IChartSymbol pChartSymbol = (IChartSymbol)pBarChartSymbol;                pChartSymbol.MaxValue = 5000000;                IMarkerSymbol pMarkerSymbol = (IMarkerSymbol)pBarChartSymbol;                pMarkerSymbol.Size = 25;                ISymbolArray pSymbolArray = (ISymbolArray)pBarChartSymbol;                IFillSymbol pFillSymbol;                pFillSymbol = (IFillSymbol)new SimpleFillSymbolClass(); //under 5                pFillSymbol.Color = GetRGBColor(213, 212, 252);                pSymbolArray.AddSymbol((ISymbol)pFillSymbol);                pFillSymbol = (IFillSymbol)new SimpleFillSymbolClass(); //5-17                pFillSymbol.Color = GetRGBColor(193, 252, 179);                pSymbolArray.AddSymbol((ISymbol)pFillSymbol);                pFillSymbol = (IFillSymbol)new SimpleFillSymbolClass(); //18-64                pFillSymbol.Color = GetRGBColor(213, 212, 252);                pSymbolArray.AddSymbol((ISymbol)pFillSymbol);                pFillSymbol = (IFillSymbol)new SimpleFillSymbolClass(); //65-up                pFillSymbol.Color = GetRGBColor(193, 252, 179);                pSymbolArray.AddSymbol((ISymbol)pFillSymbol);                pFillSymbol = (IFillSymbol)new SimpleFillSymbolClass();                pFillSymbol.Color = GetRGBColor(239, 228, 190);                pChartRenderer.ChartSymbol = (IChartSymbol)pBarChartSymbol;                pChartRenderer.BaseSymbol = (ISymbol)pFillSymbol;                pChartRenderer.Label = "Population";                pChartRenderer.UseOverposter = false;                layer = (IGeoFeatureLayer)axMapControl1.get_Layer(2);                layer.Renderer = (IFeatureRenderer)pChartRenderer;                axMapControl1.ActiveView.Refresh();                axTOCControl1.SetBuddyControl(axMapControl1.Object);                axTOCControl1.Refresh();            }            catch (Exception err)            {                Console.WriteLine(err.Message);            }        }

分段专题图

private void 分段专题图ToolStripMenuItem_Click(object sender, EventArgs e)        {            double[] Classes = { 9920007, 19840014, 29760021 };            int ClassesCount = 3;            //int numDesiredClasses = 3;            //pClassify.Classify(ref numDesiredClasses);            //Classes =(double[]) pClassify.ClassBreaks;            //ClassesCount = Classes.GetUpperBound(1);            IClassBreaksRenderer pClassBreaksRenderer = new ClassBreaksRendererClass();            pClassBreaksRenderer.Field = "POP1990";            pClassBreaksRenderer.BreakCount = ClassesCount;            pClassBreaksRenderer.SortClassesAscending = true;            IHsvColor pFromColor = new HsvColorClass();            pFromColor.Hue = 60;        // Yellow;            pFromColor.Saturation = 100;            pFromColor.Value = 96;            IHsvColor pToColor = new HsvColorClass();            pToColor.Hue = 0;            pToColor.Saturation = 100;            pToColor.Value = 96;            bool ok;            IAlgorithmicColorRamp pRamp = new AlgorithmicColorRampClass();            pRamp.Algorithm = esriColorRampAlgorithm.esriHSVAlgorithm;            pRamp.FromColor = pFromColor;            pRamp.ToColor = pToColor;            pRamp.Size = ClassesCount;            pRamp.CreateRamp(out ok);            IEnumColors pEnumColors = pRamp.Colors;            IColor pColor;            ISimpleFillSymbol pFillSymbol;            for (int breakIndex = 0; breakIndex < ClassesCount; breakIndex++)            {                pColor = pEnumColors.Next();                pFillSymbol = new SimpleFillSymbolClass();                pFillSymbol.Color = pColor;                pFillSymbol.Style = esriSimpleFillStyle.esriSFSSolid;                pClassBreaksRenderer.set_Symbol(breakIndex, (ISymbol)pFillSymbol);                pClassBreaksRenderer.set_Break(breakIndex, Classes[breakIndex]);            }            IGeoFeatureLayer m_pGeoFeatureLayer = (IGeoFeatureLayer)axMapControl1.get_Layer(2);            m_pGeoFeatureLayer.Renderer = (IFeatureRenderer)pClassBreaksRenderer;            axMapControl1.ActiveView.Refresh();            axTOCControl1.SetBuddyControl(axMapControl1.Object);            axTOCControl1.Refresh();        }

单值专题图

    private void 单值专题图ToolStripMenuItem_Click(object sender, EventArgs e)        {            ITable pTable;            int fieldNumber;            string strFieldName = "NAME";            pTable = (ITable)axMapControl1.get_Layer(0);            fieldNumber = pTable.FindField(strFieldName);            if (fieldNumber == -1)            {                MessageBox.Show("Can't find field called STATE_NAME");                return;            }            IUniqueValueRenderer pUniqueValueRenderer = new UniqueValueRendererClass();            pUniqueValueRenderer.FieldCount = 1;            pUniqueValueRenderer.set_Field(0, strFieldName);            object codeValue;            bool ok;            IRandomColorRamp pColorRamp = new RandomColorRampClass();            pColorRamp.StartHue = 0;            pColorRamp.MinValue = 99;            pColorRamp.MinSaturation = 15;            pColorRamp.EndHue = 360;            pColorRamp.MaxValue = 100;            pColorRamp.MaxSaturation = 30;            pColorRamp.Size = 100;            pColorRamp.CreateRamp(out ok);            IEnumColors pEnumRamp = pColorRamp.Colors;            IQueryFilter pQueryFilter = new QueryFilterClass();            pQueryFilter.AddField(strFieldName);            ICursor pCursor = pTable.Search(pQueryFilter, true);            IRow pNextRow = pCursor.NextRow();            IFillSymbol pSym;            IColor pNextUniqueColor;            if (pNextRow != null)            {                int fieldIndex = pNextRow.Fields.FindField(strFieldName);                do                {                    codeValue = pNextRow.get_Value(fieldIndex);                    pNextUniqueColor = pEnumRamp.Next();                    if (pNextUniqueColor == null)                    {                        pEnumRamp.Reset();                        pNextUniqueColor = pEnumRamp.Next();                    }                    pSym = new SimpleFillSymbolClass();                    pSym.Color = pNextUniqueColor;                    pUniqueValueRenderer.AddValue(codeValue.ToString(), "STATE_NAME", (ISymbol)pSym);                    pNextRow = pCursor.NextRow();                } while (pNextRow != null);            }            IGeoFeatureLayer m_pGeoFeatureLayer = (IGeoFeatureLayer)axMapControl1.get_Layer(0);            m_pGeoFeatureLayer.Renderer = (IFeatureRenderer)pUniqueValueRenderer;            axMapControl1.ActiveView.Refresh();            axTOCControl1.SetBuddyControl(axMapControl1.Object);            axTOCControl1.Refresh();        }