private void simpleButton1_Click(object sender, EventArgs e) //渲染图层
{
if (comboBoxEdit2.Text == "分级渲染")
{
if (comboBoxEdit3.Text != "自定义分级")
{
Classifly.classifyRender(featureLayer, comboBoxEdit3.Text, comboBoxEdit1.Text,
getRamp(), Convert.ToInt16(spinEdit1.Text));
}
else
{
Classifly.userRender(featureLayer, comboBoxEdit3.Text, comboBoxEdit1.Text,
getRamp(), Convert.ToInt16(spinEdit1.Text), valueChooseInChart1.getValues());
}
}
else if (comboBoxEdit2.Text == "圆大小渲染")
{
Classifly.ProportionalRenderer(featureLayer, comboBoxEdit1.Text,
ColorToIColor(colorPickEdit3.Color), Convert.ToDouble(spinEdit2.Text));
}
else
{
Classifly.uniqueRender(featureLayer, comboBoxEdit1.Text);
}
axMapControl1.Refresh();
axTOCControl1.Update();
}
private void simpleButton1_Click(object sender, EventArgs e)
{
if (comboBoxEdit2.Text == "分级渲染")
{
if (comboBoxEdit1.Text != "自定义分级")
{
Classifly.classifyRender(rasterLayer, comboBoxEdit1.Text,
Convert.ToInt16(spinEdit1.Text), getRamp());
}
else
{
Console.WriteLine("自定义");
Classifly.userRender(rasterLayer, getRamp(), Convert.ToInt32(spinEdit1.Text), valueChooseInChart1.getValues());
}
}
else if (comboBoxEdit2.Text == "连续渲染")
{
Classifly.stretchRender(rasterLayer, getRamp());
}
else
{
Classifly.uniqueRender(rasterLayer);
}
axMapControl1.Refresh();
axTOCControl1.Update();
}
public static void Symbology_Proportional(IFeatureLayer featureLayer, string fieldName, IMapControl2 mapControl, AxTOCControl tocControl)
{
// 获取渲染字段统计值
IStatisticsResults pStatResult = GetDataSataResults(featureLayer, fieldName);
// 比例符号渲染
if (pStatResult != null)
{
IFillSymbol pFillSymbol = new SimpleFillSymbolClass()
{
Color = GetRgbColor(155, 255, 0)
};
ISymbol pMarkerSymbol = new SimpleMarkerSymbolClass()
{
Style = esriSimpleMarkerStyle.esriSMSDiamond,
Size = 3,
Color = GetRgbColor(255, 90, 0)
};
IProportionalSymbolRenderer pRenderer = new ProportionalSymbolRendererClass()
{
ValueUnit = esriUnits.esriUnknownUnits, // 渲染单位
Field = fieldName, // 渲染字段
FlanneryCompensation = false,
MinDataValue = pStatResult.Minimum, // 最小值
MaxDataValue = pStatResult.Maximum, // 最大值
BackgroundSymbol = pFillSymbol, // 背景颜色
MinSymbol = pMarkerSymbol, // 最小渲染符号
LegendSymbolCount = 5 // TOC控件中的显示条目
};
pRenderer.CreateLegendSymbols();
(featureLayer as IGeoFeatureLayer).Renderer = pRenderer as IFeatureRenderer;
mapControl.Refresh();
tocControl.Update();
}
}
//退出程序
public void ExitProgram(AxMapControl axMapControl1, AxTOCControl axTOCControl1)
{
DialogResult dialogResult = MessageBox.Show("保存文件？", "关闭文件", MessageBoxButtons.YesNoCancel);
if (dialogResult == DialogResult.Yes)
{
SaveDocument(axMapControl1);
mapDocument.Close();
axMapControl1.ClearLayers();
axMapControl1.Refresh();
axTOCControl1.Update();
Application.Exit();
}
if (dialogResult == DialogResult.No)
{
//mapDocument.Close();
//axMapControl1.ClearLayers();
//axMapControl1.Refresh();
//axTOCControl1.Update();
Application.Exit();
}
if (dialogResult == DialogResult.Cancel)
{
return;
}
}
private void btnRasterOK_Click(object sender, EventArgs e)
{
try
{
RasterRender render = new RasterRender();
pListRamp = style.pListRamp;
render.RasterClassify(rasterlayer, cmbClassifyMethod.SelectedItem.ToString(), Convert.ToInt32(cmbClassifyCount.SelectedItem), (IColorRamp)pListRamp[cmbSymClassify.SelectedIndex]);
//axmapcontrol.ActiveView.PartialRefresh(esriViewDrawPhase.esriViewGeography, null, null);
axmapcontrol.Refresh();
axtoccontrol.Update();
axmapcontrol.Extent = rasterlayer.AreaOfInterest;
}
catch (Exception ec)
{
MessageBox.Show(ec.Message);
}
}
private void btnRasterOK_Click(object sender, EventArgs e)
{
switch (tabControl1.SelectedIndex)
{
case 0:
try
{
IRasterStretchColorRampRenderer rasStreRen = new RasterStretchColorRampRendererClass();
IRasterRenderer rasRen = rasStreRen as IRasterRenderer;
rasRen.Raster = rasterlayer.Raster;
rasRen.Update();
rasStreRen.BandIndex = cmbBand.SelectedIndex;
pListRamp = style.pListRamp;
rasStreRen.ColorRamp = (IColorRamp)pListRamp[cmbsymRaster.SelectedIndex];
rasRen.Update();
rasterlayer.Renderer = rasStreRen as IRasterRenderer;
IRasterStretch2 stretch = rasStreRen as IRasterStretch2;
stretch.BackgroundValue = 0;
stretch.Background = true;
stretch.BackgroundColor = RasterRender.GET(255, 255, 255) as IColor;
axmapcontrol.ActiveView.PartialRefresh(esriViewDrawPhase.esriViewGeography, null, null);
axtoccontrol.Update();
axmapcontrol.Extent = rasterlayer.AreaOfInterest;
this.Close();
}
catch (Exception ec)
{
MessageBox.Show(ec.Message);
}
break;
case 1:
RasterRender render = new RasterRender();
pListRamp = style.pListRamp;
render.RasterClassify(rasterlayer, cmbClassifyMethod.SelectedValue.ToString(), Convert.ToInt32(cmbClassifyCount.SelectedValue), (IColorRamp)pListRamp[cmbSymClassify.SelectedIndex]);
axmapcontrol.ActiveView.PartialRefresh(esriViewDrawPhase.esriViewGeography, null, null);
axtoccontrol.Update();
axmapcontrol.Extent = rasterlayer.AreaOfInterest;
break;
}
}
private void ChangeRender2RasterStretchColorRampRender(IRasterLayer rasterLayer)
{
if (rasterlayer == null)
{
return;
}
//计算统计图
IRasterBand band = GetBand(rasterLayer);
if (band.Histogram == null)
{
band.ComputeStatsAndHist();
}
IRaster raster = rasterLayer.Raster;
IRasterStretchColorRampRenderer rasterStretchColorRampRenderer = new RasterStretchColorRampRendererClass();
IRasterRenderer rasterRenderer = rasterStretchColorRampRenderer as IRasterRenderer;
rasterRenderer.Raster = raster;
rasterRenderer.Update();
//IAlgorithmicColorRamp algorithmicColorRamp = new AlgorithmicColorRampClass();
//algorithmicColorRamp.Size = 255;
//algorithmicColorRamp.FromColor = getRGBColor(255, 0, 0);
//algorithmicColorRamp.ToColor = getRGBColor(0, 255, 0);
//bool btrue;
//algorithmicColorRamp.CreateRamp(out btrue);
rasterStretchColorRampRenderer.BandIndex = cmbRasterBands.SelectedIndex;
IColorRamp pColorRamp = (IColorRamp)EnumStyleItem[colorComboBox.SelectedIndex];
rasterStretchColorRampRenderer.ColorRamp = pColorRamp;
rasterRenderer.Update();
rasterLayer.Renderer = rasterStretchColorRampRenderer as IRasterRenderer;
axmapcontrol.ActiveView.PartialRefresh(esriViewDrawPhase.esriViewGeography, null, null);
axtoccontrol.Update();
axmapcontrol.Extent = rasterlayer.AreaOfInterest;
}
private void CloseFile()
{
cbxActiveMap.Items.Clear();
cbxFeatureLayer.Items.Clear();
cbxField.Items.Clear();
districtList.Items.Clear();
chkBoxLabel.IsChecked = false;
labelClrPicker.SelectedColor = null;
rbtnBarCht.IsChecked = false;
rbtnPieCht.IsChecked = false;
m_map.ClearLayers();
m_toc.Update();
m_toolbar.Update();
m_map.Refresh();
}
// 比例符号化
public static void Proportional(IFeatureLayer featureLayer, string fieldName, IMapControl2 mapControl, AxTOCControl tocControl)
{
ITable pTable = featureLayer as ITable;
ICursor pCursor = pTable.Search(null, false);
// 利用IDataStatistics和IStatisticsResults获取渲染字段的统计值（最大值 and 最小值）
IDataStatistics pDataStat = new DataStatisticsClass()
{
Cursor = pCursor, Field = fieldName
};
IStatisticsResults pStatResult = pDataStat.Statistics;
if (pStatResult != null)
{
// 设置渲染背景色
IFillSymbol pFillSymbol = new SimpleFillSymbolClass()
{
Color = GetRgbColor(155, 255, 0)
};
ISimpleMarkerSymbol pSimpleMaskerSymbol = new SimpleMarkerSymbolClass()
{
Style = esriSimpleMarkerStyle.esriSMSDiamond,
Size = 3,
Color = GetRgbColor(255, 90, 0)
};
IProportionalSymbolRenderer pRenderer = new ProportionalSymbolRendererClass()
{
ValueUnit = esriUnits.esriUnknownUnits, // 渲染单位
Field = fieldName, // 渲染字段
FlanneryCompensation = false, // 是否使用Flannery补偿
MinDataValue = pStatResult.Minimum, // 获取渲染字段的最小值
MaxDataValue = pStatResult.Maximum, // 获取渲染字段的最大值
BackgroundSymbol = pFillSymbol,
MinSymbol = pSimpleMaskerSymbol as ISymbol, // 渲染字段最小值的渲染符号
LegendSymbolCount = 5 // 设置TOC控件中的显示条目
};
pRenderer.CreateLegendSymbols(); // 生成图例
(featureLayer as IGeoFeatureLayer).Renderer = pRenderer as IFeatureRenderer;
}
mapControl.Refresh();
tocControl.Update();
}
public static void UpdateTOCControl()
{
m_tocControl.Update();
}
//单一或多字段符号化
private void UniqueValueRenderer(IFeatureLayer pFeatLyr, string[] sFieldName)
{
IFeatureLayer pFLayer = pLayer as IFeatureLayer;
IGeoFeatureLayer geoLayer = pLayer as IGeoFeatureLayer;
IFeatureClass fcls = pFLayer.FeatureClass;
IQueryFilter pQueryFilter = new QueryFilterClass();
IFeatureCursor fCursor = fcls.Search(pQueryFilter, false);
IRandomColorRamp rx = new RandomColorRampClass();
rx.MinSaturation = 15;
rx.MaxSaturation = 30;
rx.MinValue = 85;
rx.MaxValue = 100;
rx.StartHue = 0;
rx.EndHue = 360;
rx.Size = 100;
bool ok;;
rx.CreateRamp(out ok);
IEnumColors RColors = rx.Colors;
RColors.Reset();
IUniqueValueRenderer pRender = new UniqueValueRendererClass();
pRender.FieldCount = 1;
pRender.set_Field(0, sFieldName[0]);
IFeature pFeat = fCursor.NextFeature();
int index = pFeat.Fields.FindField(sFieldName[0]);
while (pFeat != null)
{
ISimpleFillSymbol symd = new SimpleFillSymbolClass();
symd.Style = esriSimpleFillStyle.esriSFSSolid;
symd.Outline.Width = 1;
symd.Color = RColors.Next();
string valuestr = pFeat.get_Value(index).ToString();
pRender.AddValue(valuestr, valuestr, symd as ISymbol);
pFeat = fCursor.NextFeature();
}
geoLayer.Renderer = pRender as IFeatureRenderer;
//刷新地图和TOOCotrol
IActiveView pActiveView = _MapControl.Map as IActiveView;
pActiveView.Refresh();
axTOCControl1.Update();
}
private void button1_Click(object sender, EventArgs e)
{
if (cbLayer.Text == null || symbolizationWay == null)
{
MessageBox.Show("需要先选择图层和方法哦！");
return;
}
ILayer pLayer = getLayersByName(cbLayer.Text);
switch (symbolizationWay)
{
case "简单着色":
if (type == CURRENT_LAYER_POLYGON)
{
simpleDye(pLayer);
}
else if (type == CURRENT_LAYER_LINE)
{
lineSimpleDye(pLayer);
}
break;
case "分级着色":
if (type == CURRENT_LAYER_POLYGON)
{
polygonClassificationDye(pLayer);
}
else if (type == CURRENT_LAYER_LINE)
{
polygonClassificationDye(pLayer);
}
break;
case "唯一值着色":
if (type == CURRENT_LAYER_POLYGON)
{
polygonUniqueDye(pLayer);
}
else if (type == CURRENT_LAYER_LINE)
{
polygonUniqueDye(pLayer);
}
break;
case "质量图着色":
if (type == CURRENT_LAYER_POLYGON)
{
polygonQualityDye(pLayer);
}
else if (type == CURRENT_LAYER_LINE)
{
polygonQualityDye(pLayer);
}
break;
case "点密度":
try
{
int intRendererDensity = int.Parse(RendererDensity.Text);
DotDensity(pLayer as IFeatureLayer, cbField1.Text, intRendererDensity);
}
catch {
}
break;
default:
break;
}
axToccontrol1.Update();
}
//在OnviewRfeshed事件下使用（联动）
public static void Use_OnViewRefreshed(AxTOCControl toccControl, AxMapControl mapControl, AxPageLayoutControl axPageLayoutControl)
{
toccControl.Update();
OperateFile.CopyAndOverwriteMap(mapControl, axPageLayoutControl);
}
// 唯一值符号化
public static void UniqueValueRenderer(IFeatureLayer featureLayer, string fieldName, IMapControl2 mapControl, AxTOCControl tocControl)
{
ITable pTable = featureLayer as ITable;
IUniqueValueRenderer pRenderer = new UniqueValueRendererClass();
pRenderer.FieldCount = 1; // 设置唯一值符号化的关键字段为一个
pRenderer.set_Field(0, fieldName); // 设置唯一值符号化的第一个关键字段
IRandomColorRamp pColorRamp = new RandomColorRampClass()
{
StartHue = 0,
MinValue = 0,
MinSaturation = 0,
EndHue = 100,
MaxValue = 100,
MaxSaturation = 100
};
// 根据渲染字段的值的个数，设置一组随机颜色
pColorRamp.Size = featureLayer.FeatureClass.FeatureCount(new QueryFilterClass());
bool bSuccess = false;
pColorRamp.CreateRamp(out bSuccess);
IEnumColors pEnumColors = pColorRamp.Colors;
IColor pNextUniqueColor = null;
// 查询字段的值
IQueryFilter pQueryFilter = new QueryFilterClass();
pQueryFilter.AddField(fieldName);
int fieldNumber = pTable.FindField(fieldName); // 获取渲染字段索引
ICursor pCursor = pTable.Search(pQueryFilter, true);
IRow pNextRow = pCursor.NextRow();
object codeValue = null;
IRowBuffer pNextRowBuffer = null;
while (pNextRow != null)
{
pNextRowBuffer = pNextRow as IRowBuffer;
// 获取渲染字段的每一个值
codeValue = pNextRowBuffer.get_Value(fieldNumber);
pNextUniqueColor = pEnumColors.Next();
if (pNextUniqueColor == null)
{
pEnumColors.Reset();
pNextUniqueColor = pEnumColors.Next();
}
ISymbol pSymbol = null;
switch (featureLayer.FeatureClass.ShapeType)
{
case esriGeometryType.esriGeometryPolygon:
pSymbol = new SimpleFillSymbolClass()
{
Color = pNextUniqueColor
};
break;
case esriGeometryType.esriGeometryPolyline:
pSymbol = new SimpleLineSymbolClass()
{
Color = pNextUniqueColor
};
break;
case esriGeometryType.esriGeometryPoint:
pSymbol = new SimpleMarkerSymbolClass()
{
Color = pNextUniqueColor
};
break;
}
pRenderer.AddValue(codeValue.ToString(), "", pSymbol);
pNextRow = pCursor.NextRow();
}
(featureLayer as IGeoFeatureLayer).Renderer = pRenderer as IFeatureRenderer;
mapControl.Refresh();
tocControl.Update();
}
// 唯一值符号化
public static void Symbology_UniqueValue(IFeatureLayer featureLayer, string fieldName, IMapControl2 mapControl, AxTOCControl tocControl)
{
IUniqueValueRenderer pRenderer = new UniqueValueRendererClass()
{
FieldCount = 1
};
// 随机色带
IColorRamp pColorRamp = new RandomColorRampClass()
{
StartHue = 0, MinSaturation = 0, MinValue = 0,
EndHue = 360, MaxSaturation = 100, MaxValue = 100,
Size = featureLayer.FeatureClass.FeatureCount(new QueryFilterClass())
};
bool bOk = false;
pColorRamp.CreateRamp(out bOk);
IEnumColors pColors = pColorRamp.Colors;
ITable pTable = featureLayer as ITable;
int fieldIndex = pTable.FindField(fieldName);
IQueryFilter pQueryFilter = new QueryFilterClass();
pQueryFilter.AddField(fieldName);
ICursor pCursor = pTable.Search(pQueryFilter, true);
IRow pRow = pCursor.NextRow();
while (pRow != null)
{
IRowBuffer pRowBuffer = pRow as IRowBuffer;
string value = pRowBuffer.get_Value(fieldIndex).ToString();
IColor pColor = pColors.Next();
ISymbol pSymbol = null;
switch (featureLayer.FeatureClass.ShapeType)
{
case esriGeometryType.esriGeometryPoint:
pSymbol = new SimpleMarkerSymbolClass()
{
Color = pColor
};
break;
case esriGeometryType.esriGeometryPolyline:
pSymbol = new SimpleLineSymbolClass()
{
Color = pColor
};
break;
case esriGeometryType.esriGeometryPolygon:
pSymbol = new SimpleFillSymbolClass()
{
Color = pColor
};
break;
}
pRenderer.AddValue(value, "", pSymbol);
pRow = pCursor.NextRow();
}
(featureLayer as IGeoFeatureLayer).Renderer = pRenderer as IFeatureRenderer;
mapControl.Refresh();
tocControl.Update();
}
// 分级色彩符号化
public static void GraduatedColors(IFeatureLayer featureLayer, string fieldName, int numClasses, IMapControl2 mapControl, AxTOCControl tocControl)
{
object dataFrequency;
object dataValue;
int breakIndex;
ITable pTable = featureLayer.FeatureClass as ITable;
ITableHistogram pTableHistogram = new BasicTableHistogramClass()
{
Field = fieldName, Table = pTable
};
IBasicHistogram pBasicHistogram = (IBasicHistogram)pTableHistogram;
// 获取渲染字段的值及其出现的频率
pBasicHistogram.GetHistogram(out dataValue, out dataFrequency);
IClassifyGEN pClassifyGEN = new EqualIntervalClass();
try { pClassifyGEN.Classify(dataValue, dataFrequency, ref numClasses); }
catch { }
// 返回一个数组
double[] Classes = pClassifyGEN.ClassBreaks as double[];
int ClassesCount = Classes.GetUpperBound(0);
IClassBreaksRenderer pRenderer = new ClassBreaksRendererClass()
{
// 分级字段 分级数目 分级后的图例是否按升级顺序排序
Field = fieldName, BreakCount = ClassesCount, SortClassesAscending = true
};
// 设置分级说色所需颜色带的起止颜色
//IHsvColor pFromColor = GetHsvColor(0, 50, 96);
//IHsvColor pToColor = GetHsvColor(80, 100, 96);
IRgbColor pFromColor = GetRgbColor(255, 200, 200);
IRgbColor pToColor = GetRgbColor(255, 0, 0);
// 生成颜色带对象
IAlgorithmicColorRamp pColorRamp = CreateColorRamp(pFromColor, pToColor, ClassesCount);
// 获取色带颜色集
IEnumColors pEnumColors = pColorRamp.Colors;
// 逐一设置填充符号及每一分级的分级断点
for (breakIndex = 0; breakIndex < ClassesCount; breakIndex++)
{
IColor pColor = pEnumColors.Next();
ISymbol pSymbol = null;
switch (featureLayer.FeatureClass.ShapeType)
{
case esriGeometryType.esriGeometryPolygon:
pSymbol = new SimpleFillSymbolClass()
{
Color = pColor, Style = esriSimpleFillStyle.esriSFSSolid
};
break;
case esriGeometryType.esriGeometryPolyline:
pSymbol = new SimpleLineSymbolClass()
{
Color = pColor
};
break;
case esriGeometryType.esriGeometryPoint:
pSymbol = new SimpleMarkerSymbolClass()
{
Color = pColor
};
break;
}
// 设置填充符号
pRenderer.set_Symbol(breakIndex, pSymbol);
// 设置每一级的分级断点
pRenderer.set_Break(breakIndex, Classes[breakIndex + 1]);
}
(featureLayer as IGeoFeatureLayer).Renderer = pRenderer as IFeatureRenderer;
mapControl.Refresh();
tocControl.Update();
}
void ClassifyColor()
{
IGeoFeatureLayer geoFeatureLayer = mapControl.Map.get_Layer(17) as IGeoFeatureLayer;
string a = geoFeatureLayer.Name;
object dataFrequency, dataValues;
ITableHistogram tableHistogram = new BasicTableHistogramClass();
IBasicHistogram basicHistogram = (IBasicHistogram)tableHistogram;
tableHistogram.Field = cmbSelField.Text;
tableHistogram.Table = geoFeatureLayer.FeatureClass as ITable;
basicHistogram.GetHistogram(out dataValues, out dataFrequency);
IClassifyGEN classifyGEN = new EqualIntervalClass();
classifyGEN.Classify(dataValues, dataFrequency, Convert.ToInt32(cmbnumclasses.Text));
double[] classes = classifyGEN.ClassBreaks as double[];
int classesCount = classes.GetUpperBound(0);
IClassBreaksRenderer classBreaksRenderer = new ClassBreaksRendererClass();
classBreaksRenderer.Field = cmbSelField.Text;
classBreaksRenderer.BreakCount = classesCount;
classBreaksRenderer.SortClassesAscending = true;
IHsvColor fromColor = new HsvColorClass();
fromColor.Hue = 0; fromColor.Saturation = 50;
fromColor.Value = 96;
IHsvColor toColor = new HsvColorClass();
toColor.Hue = 80;
toColor.Saturation = 100;
toColor.Value = 96;
bool ok;
//产生色带
IAlgorithmicColorRamp algorithmicCR = new AlgorithmicColorRampClass();
algorithmicCR.Algorithm = esriColorRampAlgorithm.esriHSVAlgorithm;
algorithmicCR.FromColor = fromColor;
algorithmicCR.ToColor = toColor;
algorithmicCR.Size = classesCount;
algorithmicCR.CreateRamp(out ok);
//获得颜色
IEnumColors enumColors = algorithmicCR.Colors;
for (int breakIndex = 0; breakIndex <= classesCount - 1; breakIndex++)
{
IColor color = enumColors.Next();
ISimpleFillSymbol simpleFill = new SimpleFillSymbolClass();
simpleFill.Color = color;
simpleFill.Style = esriSimpleFillStyle.esriSFSSolid;
classBreaksRenderer.set_Symbol(breakIndex, (ISymbol)simpleFill);
classBreaksRenderer.set_Break(breakIndex, classes[breakIndex + 1]);
}
geoFeatureLayer.Renderer = (IFeatureRenderer)classBreaksRenderer;
mapControl.Refresh();
mapControl.ActiveView.Refresh();
tocControl.Update();
}
public static void Symbology_GraduatedColors(IFeatureLayer featureLayer, string fieldName, int numClasses, IMapControl2 mapControl, AxTOCControl tocControl)
{
// 获取渲染字段的值及其出现的频率
ITable pTable = featureLayer as ITable;
IBasicHistogram pBasicHistogram = new BasicTableHistogramClass()
{
Field = fieldName,
Table = pTable
};
object dataFrequency, dataValue; // 频率和值
pBasicHistogram.GetHistogram(out dataValue, out dataFrequency);
// 数据分级
IClassifyGEN pClassifyGEN = new EqualIntervalClass(); // 等间隔
//IClassifyGEN pClassifyGEN = new GeometricalIntervalClass(); // 几何间隔
//IClassifyGEN pClassifyGEN = new NaturalBreaksClass(); // 自然裂变
//IClassifyGEN pClassifyGEN = new QuantileClass(); // 分位数
//IClassifyGEN pClassifyGEN = new StandardDeviationClass(); // 标准偏差
try { pClassifyGEN.Classify(dataValue, dataFrequency, numClasses); }
catch { }
double[] Classes = pClassifyGEN.ClassBreaks as double[];
int ClassesCount = Classes.GetUpperBound(0);
IClassBreaksRenderer pRenderer = new ClassBreaksRendererClass()
{
// 分类字段 分类数目 升序
Field = fieldName,
BreakCount = ClassesCount,
SortClassesAscending = true
};
// 生成颜色色带
IAlgorithmicColorRamp pColorRamp = new AlgorithmicColorRamp()
{
FromColor = GetRgbColor(255, 200, 200),
ToColor = GetRgbColor(255, 0, 0),
Size = ClassesCount
};
bool bOk = false;
pColorRamp.CreateRamp(out bOk);
IEnumColors pColors = pColorRamp.Colors;
// 逐一设置填充符号及每一分级的分级断点
for (int index = 0; index < ClassesCount; index++)
{
IColor pColor = pColors.Next();
ISymbol pSymbol = null;
switch (featureLayer.FeatureClass.ShapeType)
{
case esriGeometryType.esriGeometryPoint:
pSymbol = new SimpleMarkerSymbolClass()
{
Color = pColor
};
break;
case esriGeometryType.esriGeometryPolyline:
pSymbol = new SimpleLineSymbolClass()
{
Color = pColor
};
break;
case esriGeometryType.esriGeometryPolygon:
pSymbol = new SimpleFillSymbolClass()
{
Color = pColor
};
break;
}
pRenderer.set_Symbol(index, pSymbol); // 每级的符号
pRenderer.set_Break(index, Classes[index + 1]); // 每级的断点
}
(featureLayer as IGeoFeatureLayer).Renderer = pRenderer as IFeatureRenderer;
mapControl.Refresh();
tocControl.Update();
}
