//分级渲染函数
private void RasterClassifyRender(IRasterLayer pRasterLayer)
{
try
{
IColorRamp pColorRamp = (IColorRamp)EnumStyleItem[comboBoxColor.SelectedIndex];
IRasterClassifyColorRampRenderer pRClassRend = new RasterClassifyColorRampRenderer() as IRasterClassifyColorRampRenderer;
IRasterRenderer pRRend = pRClassRend as IRasterRenderer;
IRaster pRaster = pRasterLayer.Raster;
IRasterBandCollection pRBandCol = pRaster as IRasterBandCollection;
IRasterBand pRBand = pRBandCol.Item(0);
if (pRBand.Histogram == null)
{
pRBand.ComputeStatsAndHist();
}
pRRend.Raster = pRaster;
pRRend.Update();
IRgbColor pFromColor = new RgbColor() as IRgbColor;
pFromColor.Red = 255;
pFromColor.Green = 0;
pFromColor.Blue = 0;
IRgbColor pToColor = new RgbColor() as IRgbColor;
pToColor.Red = 0;
pToColor.Green = 0;
pToColor.Blue = 255;
IAlgorithmicColorRamp colorRamp = new AlgorithmicColorRamp() as IAlgorithmicColorRamp;
//colorRamp = pColorRamp as IAlgorithmicColorRamp;///////
colorRamp.Size = comboBoxClassValue.SelectedIndex + 1;
//colorRamp.FromColor = pFromColor;
//colorRamp.ToColor = pToColor;
int nClass = comboBoxClassValue.SelectedIndex + 1;
colorRamp.FromColor = pColorRamp.get_Color(0);
colorRamp.ToColor = pColorRamp.get_Color(nClass - 1);
bool createColorRamp;
colorRamp.CreateRamp(out createColorRamp);
IFillSymbol fillSymbol = new SimpleFillSymbol() as IFillSymbol;
for (int i = 0; i < nClass; i++)
{
fillSymbol.Color = colorRamp.get_Color(i);
pRClassRend.set_Symbol(i, fillSymbol as ISymbol);
pRClassRend.set_Label(i, pRClassRend.get_Break(i).ToString("0.00"));
}
pRasterLayer.Renderer = pRRend;
m_mapControl.Refresh();
}
catch (Exception e)
{
MessageBox.Show("创建失败！");
}
}
public IEnumColors GetColors(long lngStartColor, long lngEndColor, long Colors)
{
IRgbColor startColor = new RgbColor();
IRgbColor endColor = new RgbColor();
startColor.RGB = Convert.ToInt32(lngStartColor);
endColor.RGB = Convert.ToInt32(lngEndColor);
IAlgorithmicColorRamp ramp;
ramp = new AlgorithmicColorRamp();
ramp.Algorithm = esriColorRampAlgorithm.esriHSVAlgorithm;
ramp.FromColor = startColor;
ramp.ToColor = endColor;
ramp.Size = Convert.ToInt32(Colors);
bool blnIsRampOK;
ramp.CreateRamp(out blnIsRampOK);
if (!blnIsRampOK)
{
return(null);
}
else
{
return(ramp.Colors);
}
}
public IColorRamp AlgorithmicColorRamp(int ImageLstIndex, int ClassCount)
{
//Create a color ramp to use
IAlgorithmicColorRamp pRamp;
pRamp = new AlgorithmicColorRamp();
bool blncreate = true;
pRamp.Size = ClassCount;
IRgbColor pFromRgbColor = new RgbColor(); //构建一个RgbColorClass
IRgbColor pToRgbColor = new RgbColor(); //构建一个RgbColorClass
if (ImageLstIndex == 0)
{
pFromRgbColor.Red = 255; //设置Red属性
pFromRgbColor.Green = 255; //设置Green属性
pFromRgbColor.Blue = 0; //设置Blue属性
pToRgbColor.Red = 255; //设置Red属性
pToRgbColor.Green = 0; //设置Green属性
pToRgbColor.Blue = 0; //设置Blue属性
}
else if (ImageLstIndex == 1)
{
pFromRgbColor.Red = 0; //设置Red属性
pFromRgbColor.Green = 255; //设置Green属性
pFromRgbColor.Blue = 0; //设置Blue属性
pToRgbColor.Red = 0; //设置Red属性
pToRgbColor.Green = 0; //设置Green属性
pToRgbColor.Blue = 255; //设置Blue属性
}
else if (ImageLstIndex == 2)
{
pFromRgbColor.Red = 0; //设置Red属性
pFromRgbColor.Green = 255; //设置Green属性
pFromRgbColor.Blue = 0; //设置Blue属性
pToRgbColor.Red = 255; //设置Red属性
pToRgbColor.Green = 0; //设置Green属性
pToRgbColor.Blue = 0; //设置Blue属性
}
else
{
pFromRgbColor.Red = 255; //设置Red属性
pFromRgbColor.Green = 255; //设置Green属性
pFromRgbColor.Blue = 0; //设置Blue属性
pToRgbColor.Red = 255; //设置Red属性
pToRgbColor.Green = 0; //设置Green属性
pToRgbColor.Blue = 0; //设置Blue属性
}
pRamp.FromColor = (IColor)pFromRgbColor;
pRamp.ToColor = (IColor)pToRgbColor;
pRamp.CreateRamp(out blncreate);
return(pRamp as IColorRamp);
}
/// <summary>
/// 拉伸渲染raster图层
/// </summary>
/// <params name="pRLayer">raster图层</params>
/// <remarks></remarks>
public void UsingRasterStretchColorRampRender(IRasterLayer pRLayer)
{
//获得图层
IRaster pRaster = default(IRaster);
pRaster = pRLayer.Raster;
//创建渲染并转换到栅格渲染
IRasterStretchColorRampRenderer pStretchRen = default(IRasterStretchColorRampRenderer);
pStretchRen = new RasterStretchColorRampRenderer();
IRasterRenderer pRasRen = default(IRasterRenderer);
pRasRen = (IRasterRenderer)pStretchRen;
//栅格渲染赋值和更新
pRasRen.Raster = pRaster;
pRasRen.Update();
//定义起止颜色
IRgbColor pFromColor = new RgbColorClass();
pFromColor.Red = 0;
pFromColor.Green = 255;
pFromColor.Blue = 0;
IRgbColor pToColor = new RgbColorClass();
pToColor.Red = 255;
pToColor.Green = 0;
pToColor.Blue = 0;
//创建颜色条
IAlgorithmicColorRamp pRamp = new AlgorithmicColorRamp();
pRamp.Size = 255;
pRamp.FromColor = pFromColor;
pRamp.ToColor = pToColor;
bool bOK;
pRamp.CreateRamp(out bOK);
//插入颜色条和选择渲染波段
pStretchRen.BandIndex = 0;
pStretchRen.ColorRamp = pRamp;
//用新的设置更新渲染并赋值给图层
pRasRen.Update();
pRLayer.Renderer = (IRasterRenderer)pStretchRen;
//释放内存
pRLayer = null;
pRaster = null;
pStretchRen = null;
pRasRen = null;
pRamp = null;
pToColor = null;
pFromColor = null;
}
public void createSSTrst(ILayer layer)
{
IRasterClassifyColorRampRenderer pRClassRend = new RasterClassifyColorRampRenderer() as IRasterClassifyColorRampRenderer;
IRasterRenderer pRRend = pRClassRend as IRasterRenderer;
IRasterLayer rstLayer = layer as IRasterLayer;
IRaster pRaster = rstLayer.Raster;
IRasterBandCollection pRBandCol = pRaster as IRasterBandCollection;
IRasterBand pRBand = pRBandCol.Item(0);
if(pRBand.Histogram == null)
{
pRBand.ComputeStatsAndHist();
}
pRRend.Raster = pRaster;
pRClassRend.ClassCount = 10;
pRRend.Update();
IRgbColor pFromColor = new RgbColor() as IRgbColor;
pFromColor.Red = 0;
pFromColor.Green = 0;
pFromColor.Blue = 255;
IRgbColor pToColor = new RgbColor() as IRgbColor;
pToColor.Red = 255;
pToColor.Green = 0;
pToColor.Blue = 0;
IAlgorithmicColorRamp colorRamp = new AlgorithmicColorRamp() as IAlgorithmicColorRamp;
colorRamp.Size = 10;
colorRamp.FromColor = pFromColor;
colorRamp.ToColor = pToColor;
bool createColorRamp;
colorRamp.CreateRamp(out createColorRamp);
IFillSymbol fillSymbol = new SimpleFillSymbol() as IFillSymbol;
for(int i = 0; i < pRClassRend.ClassCount; i++)
{
fillSymbol.Color = colorRamp.get_Color(i);
pRClassRend.set_Symbol(i, fillSymbol as ISymbol);
pRClassRend.set_Label(i, pRClassRend.get_Break(i).ToString("0.00"));
}
rstLayer.Renderer = pRRend;
axMapControl1.AddLayer(rstLayer);
this.axMapControl1.ActiveView.Refresh();
this.axTOCControl1.Update();
}
private IColorRamp StretchAlgorithmicColorRamp(int ImageLstIndex)
{
IAlgorithmicColorRamp pRamp = new AlgorithmicColorRamp();
IRgbColor pFromRgbColor = new RgbColor(); //构建一个RgbColorClass
IRgbColor pToRgbColor = new RgbColor(); //构建一个RgbColorClass
if (ImageLstIndex == 0)
{
pFromRgbColor.Red = 255; //设置Red属性
pFromRgbColor.Green = 255; //设置Green属性
pFromRgbColor.Blue = 0; //设置Blue属性
pToRgbColor.Red = 255; //设置Red属性
pToRgbColor.Green = 0; //设置Green属性
pToRgbColor.Blue = 0; //设置Blue属性
}
else if (ImageLstIndex == 1)
{
pFromRgbColor.Red = 0; //设置Red属性
pFromRgbColor.Green = 255; //设置Green属性
pFromRgbColor.Blue = 0; //设置Blue属性
pToRgbColor.Red = 0; //设置Red属性
pToRgbColor.Green = 0; //设置Green属性
pToRgbColor.Blue = 255; //设置Blue属性
}
else if (ImageLstIndex == 2)
{
pFromRgbColor.Red = 0; //设置Red属性
pFromRgbColor.Green = 255; //设置Green属性
pFromRgbColor.Blue = 0; //设置Blue属性
pToRgbColor.Red = 255; //设置Red属性
pToRgbColor.Green = 0; //设置Green属性
pToRgbColor.Blue = 0; //设置Blue属性
}
else
{
pFromRgbColor.Red = 255; //设置Red属性
pFromRgbColor.Green = 255; //设置Green属性
pFromRgbColor.Blue = 0; //设置Blue属性
pToRgbColor.Red = 255; //设置Red属性
pToRgbColor.Green = 0; //设置Green属性
pToRgbColor.Blue = 0; //设置Blue属性
}
pRamp.FromColor = (IColor)pFromRgbColor;
pRamp.ToColor = (IColor)pToRgbColor;
pRamp.Size = 255;
bool blncreate = true;
pRamp.CreateRamp(out blncreate);
return(pRamp as IColorRamp);
}
public static IColorRamp CreateColorRamp()
{
IAlgorithmicColorRamp algorithmicColorRampClass = new AlgorithmicColorRamp();
IRgbColor rgbColor = ColorManage.CreatColor(56, 168, 0) as IRgbColor;
IRgbColor rgbColor1 = ColorManage.CreatColor(255, 0, 0) as IRgbColor;
algorithmicColorRampClass.FromColor = rgbColor;
algorithmicColorRampClass.ToColor = rgbColor1;
return(algorithmicColorRampClass);
}
public static IAlgorithmicColorRamp CreateColorRamp(esriColorRampAlgorithm esriColorRampAlgorithm_0)
{
IAlgorithmicColorRamp algorithmicColorRampClass = new AlgorithmicColorRamp()
{
Algorithm = esriColorRampAlgorithm_0
};
IRgbColor rgbColor = ColorManage.CreatColor(255, 200, 200) as IRgbColor;
algorithmicColorRampClass.FromColor = ColorManage.CreatColor(255, 0, 0) as IRgbColor;
algorithmicColorRampClass.ToColor = rgbColor;
return(algorithmicColorRampClass);
}
public void funColorForRaster_Classify(IRasterLayer pRasterLayer)
{
IRasterClassifyColorRampRenderer pRClassRend = new
RasterClassifyColorRampRenderer() as IRasterClassifyColorRampRenderer;
IRasterRenderer pRRend = pRClassRend as IRasterRenderer;
IRaster pRaster = pRasterLayer.Raster;//栅格图
IRasterBandCollection pRBandCol = pRaster as IRasterBandCollection;
IRasterBand pRBand = pRBandCol.Item(0);
if (pRBand.Histogram == null)
{
pRBand.ComputeStatsAndHist();
}
pRRend.Raster = pRaster;
pRClassRend.ClassCount = 10;
pRRend.Update();
IRgbColor pFromColor = new RgbColor() as IRgbColor;
pFromColor.Red = 255;
pFromColor.Green = 0;
pFromColor.Blue = 0;
IRgbColor pToColor = new RgbColor() as IRgbColor;
pToColor.Red = 0;
pToColor.Green = 0;
pToColor.Blue = 255;
IAlgorithmicColorRamp colorRamp = new AlgorithmicColorRamp() as
IAlgorithmicColorRamp;
colorRamp.Size = 10;
colorRamp.FromColor = pFromColor;
colorRamp.ToColor = pToColor;
bool createColorRamp;
colorRamp.CreateRamp(out createColorRamp);
IFillSymbol fillSymbol = new SimpleFillSymbol() as IFillSymbol;
for (int i = 0; i < pRClassRend.ClassCount; i++)
{
fillSymbol.Color = colorRamp.get_Color(i);
pRClassRend.set_Symbol(i, fillSymbol as ISymbol);
pRClassRend.set_Label(i,
pRClassRend.get_Break(i).ToString("0.00"));
}
pRasterLayer.Renderer = pRRend;
IActiveView activeview = this.axMapControl1.ActiveView;
activeview.ContentsChanged();
//刷新窗口
activeview.PartialRefresh(esriViewDrawPhase.esriViewGeography, null,
null);
}
/// <summary>
/// 拉伸渲染raster图层
/// </summary>
/// <params name="pRLayer">raster图层</params>
/// <remarks></remarks>
public void UsingRasterStretchColorRampRender(IRasterLayer pRLayer)
{
//获得图层
IRaster pRaster = default(IRaster);
pRaster = pRLayer.Raster;
//创建渲染并转换到栅格渲染
IRasterStretchColorRampRenderer pStretchRen = default(IRasterStretchColorRampRenderer);
pStretchRen = new RasterStretchColorRampRenderer();
IRasterRenderer pRasRen = default(IRasterRenderer);
pRasRen = (IRasterRenderer)pStretchRen;
//栅格渲染赋值和更新
pRasRen.Raster = pRaster;
pRasRen.Update();
//定义起止颜色
IRgbColor pFromColor = new RgbColorClass();
pFromColor.Red = 0;
pFromColor.Green = 255;
pFromColor.Blue = 0;
IRgbColor pToColor = new RgbColorClass();
pToColor.Red = 255;
pToColor.Green = 0;
pToColor.Blue = 0;
//创建颜色条
IAlgorithmicColorRamp pRamp = new AlgorithmicColorRamp();
pRamp.Size = 255;
pRamp.FromColor = pFromColor;
pRamp.ToColor = pToColor;
bool bOK;
pRamp.CreateRamp(out bOK);
//插入颜色条和选择渲染波段
pStretchRen.BandIndex = 0;
pStretchRen.ColorRamp = pRamp;
//用新的设置更新渲染并赋值给图层
pRasRen.Update();
pRLayer.Renderer = (IRasterRenderer)pStretchRen;
//释放内存
pRLayer = null;
pRaster = null;
pStretchRen = null;
pRasRen = null;
pRamp = null;
pToColor = null;
pFromColor = null;
}
public void funColorForRaster_Classify(IRasterLayer pRasterLayer, int number)
{
IRasterClassifyColorRampRenderer pRClassRend = new
RasterClassifyColorRampRenderer() as IRasterClassifyColorRampRenderer;
IRasterRenderer pRRend = pRClassRend as IRasterRenderer;
IRaster pRaster = pRasterLayer.Raster;//栅格图层转换为栅格图
IRasterBandCollection pRBandCol = pRaster as IRasterBandCollection;
IRasterBand pRBand = pRBandCol.Item(0);
if (pRBand.Histogram == null)
{
pRBand.ComputeStatsAndHist();
}
pRRend.Raster = pRaster;
pRClassRend.ClassCount = number;//设置分级层次，默认为10
pRRend.Update();
//设置初始渐变色和结束渐变色
MessageBox.Show("请选择初始颜色", "颜色选择", MessageBoxButtons.OK, MessageBoxIcon.Information);
IRgbColor pFromColor = new RgbColor() as IRgbColor;
selectColor(pFromColor);
MessageBox.Show("请选择结束颜色", "颜色选择", MessageBoxButtons.OK, MessageBoxIcon.Information);
IRgbColor pToColor = new RgbColor() as IRgbColor;
selectColor(pToColor);
IAlgorithmicColorRamp colorRamp = new AlgorithmicColorRamp() as
IAlgorithmicColorRamp;
colorRamp.Size = 10;
colorRamp.FromColor = pFromColor;
colorRamp.ToColor = pToColor;
bool createColorRamp;
colorRamp.CreateRamp(out createColorRamp);
IFillSymbol fillSymbol = new SimpleFillSymbol() as IFillSymbol;
for (int i = 0; i < pRClassRend.ClassCount; i++)
{
fillSymbol.Color = colorRamp.get_Color(i);
pRClassRend.set_Symbol(i, fillSymbol as ISymbol);
pRClassRend.set_Label(i,
pRClassRend.get_Break(i).ToString("0.00"));
}
pRasterLayer.Renderer = pRRend;
IActiveView activeview = this.axMapControl1.ActiveView;
activeview.ContentsChanged();
//刷新窗口
activeview.PartialRefresh(esriViewDrawPhase.esriViewGeography, null,
null);
}
public static IRasterClassifyColorRampRenderer RasterClassifyRenderer(IRasterLayer irasterLayer_0)
{
bool flag;
double @break;
string str;
IRasterClassifyColorRampRenderer rasterClassifyColorRampRenderer;
try
{
IRasterClassifyColorRampRenderer rasterClassifyColorRampRendererClass =
new RasterClassifyColorRampRenderer();
IRasterRenderer raster = (IRasterRenderer)rasterClassifyColorRampRendererClass;
rasterClassifyColorRampRendererClass.ClassField = "<VALUE>";
rasterClassifyColorRampRendererClass.NormField = "<NONE>";
raster.Raster = irasterLayer_0.Raster;
rasterClassifyColorRampRendererClass.ClassCount = 3;
raster.Update();
IAlgorithmicColorRamp algorithmicColorRampClass = new AlgorithmicColorRamp()
{
Size = 3
};
algorithmicColorRampClass.CreateRamp(out flag);
IFillSymbol simpleFillSymbolClass = new SimpleFillSymbol();
for (int i = 0; i < rasterClassifyColorRampRendererClass.ClassCount; i++)
{
simpleFillSymbolClass.Color = algorithmicColorRampClass.Color[i];
rasterClassifyColorRampRendererClass.Symbol[i] = (ISymbol)simpleFillSymbolClass;
if (i != rasterClassifyColorRampRendererClass.ClassCount - 1)
{
@break = rasterClassifyColorRampRendererClass.Break[i];
string str1 = @break.ToString("0.####");
@break = rasterClassifyColorRampRendererClass.Break[i + 1];
str = string.Concat(str1, " - ", @break.ToString("0.####"));
}
else
{
@break = rasterClassifyColorRampRendererClass.Break[i];
str = @break.ToString("0.####");
}
rasterClassifyColorRampRendererClass.set_Label(i, str);
}
rasterClassifyColorRampRenderer = raster as IRasterClassifyColorRampRenderer;
}
catch (Exception exception)
{
Debug.WriteLine(exception.Message);
rasterClassifyColorRampRenderer = null;
}
return(rasterClassifyColorRampRenderer);
}
public IRasterLayer funColorForRaster(IRasterLayer pRasterLayer)
{
IRasterClassifyColorRampRenderer pRClassRend = new RasterClassifyColorRampRenderer() as IRasterClassifyColorRampRenderer;
IRasterRenderer pRRend = pRClassRend as IRasterRenderer;
IRaster pRaster = pRasterLayer.Raster;
IRasterBandCollection pRBandCol = pRaster as IRasterBandCollection;
IRasterBand pRBand = pRBandCol.Item(0);
if (pRBand.Histogram == null)
{
pRBand.ComputeStatsAndHist();
}
pRRend.Raster = pRaster;
pRClassRend.ClassCount = 10;
pRRend.Update();
IRgbColor pFromColor = new RgbColor() as IRgbColor;
pFromColor.Red = 255;
pFromColor.Green = 0;
pFromColor.Blue = 0;
IRgbColor pToColor = new RgbColor() as IRgbColor;
pToColor.Red = 0;
pToColor.Green = 0;
pToColor.Blue = 255;
IAlgorithmicColorRamp colorRamp = new AlgorithmicColorRamp() as IAlgorithmicColorRamp;
colorRamp.Size = 10;
colorRamp.FromColor = pFromColor;
colorRamp.ToColor = pToColor;
//ESRI.ArcGIS.Display.IMultiPartColorRamp colorRamp = new MultiPartColorRamp() as IMultiPartColorRamp;
comboBox1.Items.Add(colorRamp);
bool createColorRamp;
colorRamp.CreateRamp(out createColorRamp);
IFillSymbol fillSymbol = new SimpleFillSymbol() as IFillSymbol;
for (int i = 0; i < pRClassRend.ClassCount; i++)
{
fillSymbol.Color = colorRamp.get_Color(i);
pRClassRend.set_Symbol(i, fillSymbol as ISymbol);
pRClassRend.set_Label(i, pRClassRend.get_Break(i).ToString("0.00"));
}
pRasterLayer.Renderer = pRRend;
return(pRasterLayer);
}
public static IRasterLayer SetStretchRenderer(IRaster pRaster)
{
try
{
//创建着色类和QI栅格着色
IRasterStretchColorRampRenderer pStretchRen = new RasterStretchColorRampRenderer();
IRasterRenderer pRasRen = pStretchRen as IRasterRenderer;
//为着色和更新设置栅格数据
pRasRen.Raster = pRaster;
pRasRen.Update();
//定义起点和终点颜色
IColor pFromColor = new RgbColor();
IRgbColor pRgbColor = pFromColor as IRgbColor;
pRgbColor.Red = 255;
pRgbColor.Green = 0;
pRgbColor.Blue = 0;
IColor pToColor = new RgbColor();
pRgbColor = pToColor as IRgbColor;
pRgbColor.Red = 0;
pRgbColor.Green = 255;
pRgbColor.Blue = 0;
//创建颜色分级
IAlgorithmicColorRamp pRamp = new AlgorithmicColorRamp();
pRamp.Size = 255;
pRamp.FromColor = pFromColor;
pRamp.ToColor = pToColor;
bool ok = true;
pRamp.CreateRamp(out ok);
//把颜色分级插入着色中并选择一个波段
pStretchRen.BandIndex = 0;
pStretchRen.ColorRamp = pRamp;
pRasRen.Update();
IRasterLayer pRLayer = new RasterLayer();
pRLayer.CreateFromRaster(pRaster);
pRLayer.Renderer = pStretchRen as IRasterRenderer;
return(pRLayer);
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
return(null);
}
}
/// <summary>
/// Generates a raster renderer using the provided settings
/// </summary>
/// <returns>IRasterRenderer</returns>
private static IRasterRenderer GenerateRasterRenderer(IRaster pRaster)
{
IRasterStretchColorRampRenderer pStretchRen = new RasterStretchColorRampRenderer();
//IRasterUniqueValueRenderer pStretchRen = new RasterUniqueValueRenderer();
IRasterRenderer pRasRen = (IRasterRenderer)pStretchRen;
pRasRen.Raster = pRaster;
pRasRen.Update();
IRgbColor pFromColor = new RgbColorClass();
pFromColor.Red = 255;
pFromColor.Green = 0;
pFromColor.Blue = 0;
IRgbColor pToColor = new RgbColorClass();
pToColor.Red = 0;
pToColor.Green = 255;
pToColor.Blue = 0;
IAlgorithmicColorRamp pRamp = new AlgorithmicColorRamp();
pRamp.Size = 255;
pRamp.FromColor = pFromColor;
pRamp.ToColor = pToColor;
bool bOK;
pRamp.CreateRamp(out bOK);
pStretchRen.BandIndex = 0;
pStretchRen.ColorRamp = pRamp;
pRasRen.Update();
pRaster = null;
pRasRen = null;
pRamp = null;
pToColor = null;
pFromColor = null;
return((IRasterRenderer)pStretchRen);
}
private void btnStretch_Click(object sender, EventArgs e)
{
IMap map = axMapControl1.ActiveView.FocusMap;
IRasterLayer rLayer = map.get_Layer(0) as IRasterLayer;
IRaster raster = rLayer.Raster;
IRasterStretchColorRampRenderer stretchRen = new RasterStretchColorRampRenderer();
IRasterRenderer rasRen = stretchRen as IRasterRenderer;
rasRen.Raster = raster;
rasRen.Update();
IRgbColor fromColor = new RgbColor();
fromColor.Red = 255;
fromColor.Green = 0;
fromColor.Blue = 0;
IRgbColor toColor = new RgbColor();
toColor.Red = 0;
toColor.Green = 255;
toColor.Blue = 0;
IAlgorithmicColorRamp ramp = new AlgorithmicColorRamp();
ramp.Size = 255;
ramp.FromColor = fromColor;
ramp.ToColor = toColor;
bool bTrue = true;
//Special syntax
ramp.CreateRamp(out bTrue);
//plug this colorramp ubti renderer and select a band
stretchRen.BandIndex = 1;//0
stretchRen.ColorRamp = ramp;
rasRen.Update();
rLayer.Renderer = stretchRen as IRasterRenderer;
axMapControl1.ActiveView.Refresh();
axTOCControl1.Update();
}
/// <summary>
/// Occurs when this command is clicked
/// </summary>
///
public void RasterStretchColorMapRender(IRasterLayer pRasterlayer)
{
try
{
IRaster pRaster = pRasterlayer.Raster;
int intTransPValue = 30;
IColor pFromColor = new RgbColorClass();
//Red + (0x100 * Green) + (0x10000 * Blue);
pFromColor.RGB = 255 + 0x100 * 255;
IColor pToColor = new RgbColorClass();
pToColor.RGB = 0x10000 * 255;
IRasterStretchColorRampRenderer pStretchRender = (IRasterStretchColorRampRenderer)pRasterlayer.Renderer;
IRasterRenderer pRasterRender = default(IRasterRenderer);
pRasterRender = (IRasterRenderer)pStretchRender;
pRasterRender.Raster = pRaster;
pRasterRender.Update();
IAlgorithmicColorRamp pColorRamp =
new AlgorithmicColorRamp();
pColorRamp.Size = 255;
pColorRamp.FromColor = pFromColor;
pColorRamp.ToColor = pToColor;
bool outvalue = true;
pColorRamp.CreateRamp(out outvalue);
pStretchRender.BandIndex = 0;
pStretchRender.ColorRamp = pColorRamp;
if (intTransPValue > 0)
{
IRasterDisplayProps pRRenProp =
(IRasterDisplayProps)pStretchRender;
pRRenProp.TransparencyValue = intTransPValue;
}
pRasterRender.Update();
}
catch (Exception ex)
{
System.Windows.Forms.MessageBox.Show(ex.Message);
}
}
public static IRasterStretchColorRampRenderer RasterStretchRenderer(IRasterLayer irasterLayer_0)
{
bool flag;
IRasterStretchColorRampRenderer rasterStretchColorRampRenderer;
try
{
IRasterStretchColorRampRenderer rasterStretchColorRampRendererClass =
new RasterStretchColorRampRenderer();
IRasterRenderer raster = (IRasterRenderer)rasterStretchColorRampRendererClass;
raster.Raster = irasterLayer_0.Raster;
raster.Update();
rasterStretchColorRampRendererClass.BandIndex = 0;
IAlgorithmicColorRamp algorithmicColorRampClass = new AlgorithmicColorRamp();
IColor rgbColorClass = new RgbColor();
(rgbColorClass as IRgbColor).Red = 255;
(rgbColorClass as IRgbColor).Red = 0;
(rgbColorClass as IRgbColor).Green = 0;
(rgbColorClass as IRgbColor).Blue = 0;
IColor color = new RgbColor();
(color as IRgbColor).Red = 255;
(color as IRgbColor).Green = 255;
(color as IRgbColor).Blue = 255;
algorithmicColorRampClass.Size = 255;
algorithmicColorRampClass.FromColor = rgbColorClass;
algorithmicColorRampClass.ToColor = color;
algorithmicColorRampClass.CreateRamp(out flag);
rasterStretchColorRampRendererClass.ColorRamp = algorithmicColorRampClass;
raster.Update();
rasterStretchColorRampRenderer = raster as IRasterStretchColorRampRenderer;
}
catch (Exception exception)
{
Debug.WriteLine(exception.Message);
rasterStretchColorRampRenderer = null;
}
return(rasterStretchColorRampRenderer);
}
/*创建枚举色彩
*
*/
public IColorRamp CreateAlgorithmicColorRamp(int size = 2,
IRgbColor fromcolor = null,
IRgbColor tocolor = null,
esriColorRampAlgorithm alogrithm = esriColorRampAlgorithm.esriCIELabAlgorithm)
{
if (fromcolor == null)
{
fromcolor = getRGB(25, 96, 200) as IRgbColor;
}
if (tocolor == null)
{
tocolor = getRGB(0, 55, 66) as IRgbColor;
}
IAlgorithmicColorRamp algColorRamp = new AlgorithmicColorRamp();
algColorRamp.FromColor = fromcolor;
algColorRamp.ToColor = tocolor;
algColorRamp.Algorithm = alogrithm;
algColorRamp.Size = size;
bool btrue = true;
algColorRamp.CreateRamp(out btrue);
return(algColorRamp);
}
public static void UsingRasterStretchColorRampRenderer(IRasterLayer irasterLayer_0)
{
bool flag;
IRaster raster = irasterLayer_0.Raster;
IRasterStretchColorRampRenderer renderer = new RasterStretchColorRampRenderer();
IRasterRenderer renderer2 = renderer as IRasterRenderer;
renderer2.Raster = raster;
renderer2.Update();
IColor color = ColorManage.CreatColor(255, 0, 0);
IColor color2 = ColorManage.CreatColor(0, 255, 0);
IAlgorithmicColorRamp ramp = new AlgorithmicColorRamp
{
Size = 255,
FromColor = color,
ToColor = color2
};
ramp.CreateRamp(out flag);
renderer.BandIndex = 0;
renderer.ColorRamp = ramp;
renderer2.Update();
irasterLayer_0.Renderer = renderer as IRasterRenderer;
}
private ESRI.ArcGIS.Display.IColor GetCombinedColor(IColor pColor1, IColor pColor2, EColorCombinationType eCombinationMethod, IColor pOriginColor)
{
// combines the input colors based on m_eColorCombinationMethod
// (11/08/04) -- RGB and enuLabLChColorRamp aren't used by GUI
IColor pOutColor = null;
long MyOLE_COLOR = 0; // As OLE_COLOR in VB6
IRgbColor pMainRGBColor = null;
IRgbColor pVariationRGBColor = null;
IRgbColor pMergedRGBColor = null;
bool bOK = false;
IAlgorithmicColorRamp pAlgorithmicCR = null;
// if either of the colors are null, then don't run the color through any algorithm,
// instead, just return the other color. if both are null, then return a null color
if (pColor1.NullColor)
{
pOutColor = pColor2;
}
else if (pColor2.NullColor)
{
pOutColor = pColor1;
}
else if (eCombinationMethod == EColorCombinationType.enuComponents)
{
// HSV components
// create a new HSV color
IHsvColor pHSVDrawColor = null;
pHSVDrawColor = new HsvColor();
// get HSV values from Color1 and Color2 and assign to pHSVDrawColor
IHsvColor pHSVColor1 = null;
IHsvColor pHSVColor2 = null;
// (new 4/27/04) didn't think I had to do this...
//pHSVColor1 = pColor1
//pHSVColor2 = pColor2
pHSVColor1 = new HsvColor();
pHSVColor1.RGB = pColor1.RGB;
pHSVColor2 = new HsvColor();
pHSVColor2.RGB = pColor2.RGB;
pHSVDrawColor.Hue = pHSVColor1.Hue;
pHSVDrawColor.Saturation = pHSVColor2.Saturation;
pHSVDrawColor.Value = pHSVColor2.Value;
pOutColor = pHSVDrawColor;
}
else if (eCombinationMethod == EColorCombinationType.enuRGBAverage)
{
// use additive color model to merge the two colors
MyOLE_COLOR = pColor1.RGB;
pMainRGBColor = new RgbColor();
pMainRGBColor.RGB = (int)MyOLE_COLOR;
MyOLE_COLOR = pColor2.RGB;
pVariationRGBColor = new RgbColor();
pVariationRGBColor.RGB = (int)MyOLE_COLOR;
// merged color = RGB average of the two colors
pMergedRGBColor = new RgbColor();
pMergedRGBColor.Red = (pMainRGBColor.Red + pVariationRGBColor.Red) / 2;
pMergedRGBColor.Green = (pMainRGBColor.Green + pVariationRGBColor.Green) / 2;
pMergedRGBColor.Blue = (pMainRGBColor.Blue + pVariationRGBColor.Blue) / 2;
pOutColor = pMergedRGBColor;
}
else if ((eCombinationMethod == EColorCombinationType.enuCIELabColorRamp) | (eCombinationMethod == EColorCombinationType.enuLabLChColorRamp))
{
// use color ramp and take central color between the two colors
pAlgorithmicCR = new AlgorithmicColorRamp();
if (m_eColorCombinationMethod == EColorCombinationType.enuCIELabColorRamp)
pAlgorithmicCR.Algorithm = esriColorRampAlgorithm.esriCIELabAlgorithm;
else
pAlgorithmicCR.Algorithm = esriColorRampAlgorithm.esriLabLChAlgorithm;
pAlgorithmicCR.Size = 3;
pAlgorithmicCR.FromColor = pColor1;
pAlgorithmicCR.ToColor = pColor2;
pAlgorithmicCR.CreateRamp(out bOK);
pOutColor = pAlgorithmicCR.get_Color(1); // middle color in ramp
}
else // EColorCombinationType.enuCIELabMatrix
{
double[] iLab1 = new double[4]; // L, a, b values for Color1
double[] iLab2 = new double[4]; // L, a, b values for Color2
double[] iLabOrig = new double[4]; // L, a, b values for pOriginColor
pColor1.GetCIELAB(out iLab1[0], out iLab1[1], out iLab1[2]);
pColor2.GetCIELAB(out iLab2[0], out iLab2[1], out iLab2[2]);
pOriginColor.GetCIELAB(out iLabOrig[0], out iLabOrig[1], out iLabOrig[2]);
double[] iLabOut = new double[4];
// add color1 vector and color2 vector, then subtract the origin color vector
iLabOut[0] = iLab1[0] + iLab2[0] - iLabOrig[0];
iLabOut[1] = iLab1[1] + iLab2[1] - iLabOrig[1];
iLabOut[2] = iLab1[2] + iLab2[2] - iLabOrig[2];
CorrectLabOutofRange(ref iLabOut[0], ref iLabOut[1], ref iLabOut[2]);
IHsvColor pHSVColor = null;
pHSVColor = new HsvColor();
pHSVColor.SetCIELAB(iLabOut[0], iLabOut[1], iLabOut[2]);
pOutColor = pHSVColor;
}
return pOutColor;
}
private void btnOK_Click(object sender, EventArgs e)
{
// valida os campos
if (!this.ValidarCampos())
{
return;
}
this.Cursor = Cursors.WaitCursor;
//enviar os parametros pra function do banco
try
{
var incidenciaDoencaEmUnidadeSaude = new DoencaEmUnidadeSaudeRepositorio();
//retorna uma lista de unidades de saude com incidencia da doença escolhida
var listaIncidenciaDoencaEmDistritosSanitarios = incidenciaDoencaEmUnidadeSaude.GerarMapaTematicoEmDistritosSanitarios((int)this.cmbDoenca.SelectedValue,
this.dateTPDe.Value.Year, this.dateTPAte.Value.Year);
listaIncidenciaDoencaEmDistritosSanitarios.Count.ToString();
//criar a Feature Class
IFeatureClass featureClass = CreateNewShapeFile(@"C:\Sistemas\GestaoSMS\Files\Mapas\MapaIncidencia" + cmbDoenca.Text + "EmDistritosSanitarios" + DateTime.Now.ToString("ddMMyyyyhhmmss") + ".shp");
//criar uma feature buffer
IFeatureBuffer featureBuffer = featureClass.CreateFeatureBuffer();
//campo nome
int indexNome = featureClass.FindField("nome");
//campo incidências
int indexIncidencia = featureClass.FindField("incidencia");
//criar um feature cursor com buffer ativado
IFeatureCursor featureCursor = featureClass.Insert(true);
foreach (MapaDoencaEmDistritoSanitario incidencia in listaIncidenciaDoencaEmDistritosSanitarios)
{
//passar de Wkb para IGeometry
var geometry = WKBToGeometry(incidencia.DistritosSanitarios);
//atribuir a geometria ao buffer
featureBuffer.Shape = geometry;
featureBuffer.set_Value(indexNome, incidencia.Nome);
featureBuffer.set_Value(indexIncidencia, incidencia.TotalIncidencias);
//inserir a feature na featureclass
featureCursor.InsertFeature(featureBuffer);
}
featureCursor.Flush();
Marshal.FinalReleaseComObject(featureCursor);
try
{
//cria featureLayer
IFeatureLayer featureLayer = new FeatureLayerClass();
featureLayer.FeatureClass = featureClass;
if (featureLayer != null)
{
//cria a geofeaturelayer
IGeoFeatureLayer geoFeatureLayer = (IGeoFeatureLayer)featureLayer;
//ativar os Labels
//geoFeatureLayer.DisplayAnnotation = true;
//tabela dos dados
ITable table = (ITable)featureClass;
//define o metodo de classificacao
IClassifyGEN classifyGEN = new NaturalBreaks();
//objetos com array de frequencia de dados e valores dos dados
object dataFrequency;
object dataValues;
//histograma
ITableHistogram tableHistogram = new TableHistogramClass();
IHistogram histogram = (IHistogram)tableHistogram;
tableHistogram.Field = "incidencia";
tableHistogram.Table = table;
histogram.GetHistogram(out dataValues, out dataFrequency);
double[] data = dataValues as double[];
int[] freq = dataFrequency as int[];
classifyGEN.Classify(data, freq, 5);
//Renderer de simbolos proporcionais
IClassBreaksRenderer render = new ClassBreaksRenderer();
double[] cb = (double[])classifyGEN.ClassBreaks;
render.Field = "incidencia";
render.BreakCount = 5;
//render.MinimumBreak = listaIncidenciaDoencaEmDistritosSanitarios.Min(p => p.TotalIncidencias);
render.MinimumBreak = cb[0];
//define a escala de cores
IRgbColor color1 = new RgbColor();
IRgbColor color2 = new RgbColor();
color1.Red = 255;
color1.Green = 255;
color1.Blue = 0;
color2.Red = 140;
color2.Green = 23;
color2.Blue = 23;
IAlgorithmicColorRamp colorRamp = new AlgorithmicColorRamp();
colorRamp.FromColor = color1;
colorRamp.ToColor = color2;
colorRamp.Algorithm = esriColorRampAlgorithm.esriCIELabAlgorithm;
colorRamp.Size = 5;
bool ok;
colorRamp.CreateRamp(out ok);
IEnumColors enumColors = colorRamp.Colors;
enumColors.Reset();
IClassBreaksUIProperties uiProperties = (IClassBreaksUIProperties)render;
uiProperties.ColorRamp = "Custom";
//loop para definir o estilo de cada geometria de distrito sanitario
for (int i = 0; i < 5; i++)
{
if (i != 0)
{
render.Break[i] = cb[i + 1];
render.Label[i] = (cb[i] + 1).ToString("0") + " - " + cb[i + 1].ToString("0");
uiProperties.LowBreak[i] = cb[i] + 1;
}
else
{
render.Break[i] = cb[i + 1];
render.Label[i] = "0 - " + cb[i + 1].ToString("0");
uiProperties.LowBreak[i] = cb[i] + 1;
}
ISimpleFillSymbol simpleFillSymbol = new SimpleFillSymbol();
simpleFillSymbol.Color = enumColors.Next();
simpleFillSymbol.Style = esriSimpleFillStyle.esriSFSSolid;
ISymbol symbolteste = simpleFillSymbol as ISymbol;
render.Symbol[i] = (ISymbol)symbolteste;
}
//carregar o shape no mapa
geoFeatureLayer.FeatureClass = featureClass;
geoFeatureLayer.Name = featureClass.AliasName;
geoFeatureLayer.Visible = true;
geoFeatureLayer.Renderer = (IFeatureRenderer)render;
ArcMap.Document.FocusMap.AddLayer(geoFeatureLayer);
}
MessageBox.Show("O mapa de incidência da doença [" + cmbDoenca.Text +
"] nos Distritos Sanitários foi gerado com sucesso!", this.Text, MessageBoxButtons.OK, MessageBoxIcon.Asterisk);
}
catch (Exception ex)
{
MostrarErro(ex);
MessageBox.Show("Escolha um período que contenha incidências da doença [" + cmbDoenca.Text + "].", this.Text, MessageBoxButtons.OK, MessageBoxIcon.Asterisk);
}
}
catch (Exception ex)
{
this.MostrarErro(ex);
}
finally
{
this.Cursor = Cursors.Default;
}
}
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();
}
public void Render_Layers()
{
IMxDocument pMxDoc;
pMxDoc = (IMxDocument)ArcMap.Application.Document;
IMap pMap;
pMap = pMxDoc.FocusMap;
string strChoice = null;
//** Giving the user a choice of 3 predefined maps
strChoice = Interaction.InputBox("1 - U.S. States, " + Environment.NewLine + "2 - Major Cities, " + Environment.NewLine + "3 - State Polygon Area Rank", "Please choose a map.");
if (string.IsNullOrEmpty(strChoice))
{
return;
}
IWorkspaceFactory pWFactory;
pWFactory = new ShapefileWorkspaceFactory();
IWorkspace pWorkspace;
pWorkspace = pWFactory.OpenFromFile("C:\\GEOG489\\Lesson1-2", 0);
IFeatureWorkspace pFeatureWorkspace;
pFeatureWorkspace = (IFeatureWorkspace)pWorkspace;
IFeatureLayer pFLayer;
pFLayer = new FeatureLayer();
IGeoFeatureLayer pGeoFLayer;
pGeoFLayer = (IGeoFeatureLayer)pFLayer;
IFeatureClass pFClass;
ITable pTable;
IClassify pClasses;
ITableHistogram pTableHist;
IHistogram pHist;
IClassBreaksRenderer pCBR;
IClassBreaksUIProperties pUIProperties;
ILegendInfo pLegendInfo;
object Frequencies = null;
object Values = null;
if (strChoice == "1")
{
//** User gets a Unique Value rendering of U.S. States by sub-region
pFClass = pFeatureWorkspace.OpenFeatureClass("us_boundaries.shp");
pFLayer.FeatureClass = pFClass;
pFLayer.Name = "U.S. States";
pMap.AddLayer(pFLayer);
IUniqueValueRenderer pUVRender;
pUVRender = new UniqueValueRenderer();
//** Setting default symbol for features that don't have a value in
//** the classification field
ISimpleFillSymbol pSymDefault;
pSymDefault = new SimpleFillSymbol();
pSymDefault.Style = ESRI.ArcGIS.Display.esriSimpleFillStyle.esriSFSSolid;
pSymDefault.Outline.Width = 0.4;
//** These properties should be set prior to adding values
pUVRender.FieldCount = 1;
//** Can classify based on up to 3 fields
pUVRender.Field[0] = "NAME";
//** Name of the 1st (only) field
pUVRender.DefaultSymbol = (ISymbol)pSymDefault;
pUVRender.UseDefaultSymbol = true;
IQueryFilter pQFilter;
pQFilter = new QueryFilter();
//** empty QueryFilter same as selecting all recs
IFeatureCursor pFCursor;
pFCursor = pFClass.Search(pQFilter, false);
//** getting all features
//** Make the color ramp we will use for the symbols in the renderer.
//** Colors should be random for Unique Value, as opposed to light-to-dark.
//** Make settings for hue, saturation, value, and seed to have random
//** colors generated within certain limits.
IRandomColorRamp pRamp;
pRamp = new RandomColorRamp();
pRamp.MinSaturation = 25;
pRamp.MaxSaturation = 45;
pRamp.MinValue = 85;
pRamp.MaxValue = 100;
pRamp.StartHue = 205;
pRamp.EndHue = 320;
pRamp.UseSeed = true;
pRamp.Seed = 25;
IFeature pFeature;
int n = 0;
int i = 0;
n = pFClass.FeatureCount(pQFilter);
//** Getting total count of state features
//** Loop through the features
while (i != n)
{
ISimpleFillSymbol pSymX;
pSymX = new SimpleFillSymbol();
//** Move to the next feature and assign the value in the Sub_region field to a var
pFeature = pFCursor.NextFeature();
string strVal = null;
strVal = pFeature.Value[2].ToString();
//** NAME Field is at this index in fields collection
//** Test to see if we've already added this value
//** to the renderer, if not, then add it.
bool blnAdded = false;
blnAdded = false;
int x = 0;
//** First time through, ValueCount = 0
for (x = 0; x <= (pUVRender.ValueCount - 1); x++)
{
if (pUVRender.Value[x] == strVal)
{
blnAdded = true;
break;
}
}
//** Value not yet encountered, must add it
if (blnAdded == false)
{
pUVRender.AddValue(strVal, "Predominant Term", (ISymbol)pSymDefault);
pUVRender.Label[strVal] = strVal;
pUVRender.Symbol[strVal] = (ISymbol)pSymX;
//** All values get same symbol at first,
//** colors assigned later
}
i = i + 1;
}
//** Can size the color ramp and assign the colors, now that the
//** number of unique values is known.
pRamp.Size = pUVRender.ValueCount;
bool blnRamp;
pRamp.CreateRamp(out blnRamp);
//** Create an enum of colors from the color ramp and initialize it
IEnumColors pColors;
pColors = pRamp.Colors;
pColors.Reset();
int y = 0;
//** Loop through each unique value, setting its symbol's color
for (y = 0; y <= (pUVRender.ValueCount - 1); y++)
{
string strRendVal = null;
strRendVal = pUVRender.Value[y];
if (!string.IsNullOrEmpty(strRendVal))
{
ISimpleFillSymbol pSym;
pSym = (ISimpleFillSymbol)pUVRender.Symbol[strRendVal];
pSym.Color = pColors.Next();
pUVRender.Symbol[strRendVal] = (ISymbol)pSym;
}
}
//** If you didn't use a color ramp that was predefined
//** in a style, use "Custom" here, otherwise
//** use the name of the color ramp you chose.
pUVRender.ColorScheme = "Custom";
pUVRender.FieldType[0] = true;
//** Set to True since Sub_region is a string
pGeoFLayer.Renderer = (IFeatureRenderer)pUVRender;
//** Make sure the symbology tab shows the correct info.
IRendererPropertyPage pRendPropPage;
pRendPropPage = (IRendererPropertyPage) new UniqueValuePropertyPage();
pGeoFLayer.RendererPropertyPageClassID = pRendPropPage.ClassID;
}
else if (strChoice == "2")
{
//** User gets a graduated symbol map of U.S. Cities
pFClass = pFeatureWorkspace.OpenFeatureClass("us_cities.shp");
pFLayer.FeatureClass = pFClass;
pFLayer.Name = "Major U.S. Cities";
pGeoFLayer = (IGeoFeatureLayer)pFLayer;
pMap.AddLayer(pFLayer);
//** Switching to the ITable interface; FeatureClass is a type of Table
pTable = (ITable)pFClass;
//** Creating a new quantile classification
pClasses = (IClassify) new Quantile();
//** Must create a TableHistogram to generate classes
//** Need both ITableHistogram and IHistogram interfaces
pTableHist = (ITableHistogram) new TableHistogram();
pHist = (IHistogram)pTableHist;
//** Set the table and field for the histogram, then use GetHistogram to
//** get arrays of values and corresponding frequencies
pTableHist.Field = "POPCLASS";
pTableHist.Table = pTable;
pHist.GetHistogram(out Values, out Frequencies);
//** Assign the arrays of values and frequencies to the quantile classification
//** then break the data into 5 classes
pClasses.SetHistogramData(Values, Frequencies);
pClasses.Classify(4);
double[] classBreaks = new double[4];
classBreaks = (double[])pClasses.ClassBreaks;
//** Ready to render the data
pCBR = new ClassBreaksRenderer();
pCBR.BreakCount = 4;
pCBR.Field = "POPCLASS";
pCBR.MinimumBreak = classBreaks[0];
//** ClassBreak(0) is min value of 1st class
int j = 0;
//** Loop thru each class, setting the renderers breaks
//** The renderer's breaks are 0-based, quantile's breaks are 1-based
for (j = 0; j <= (pCBR.BreakCount - 1); j++)
{
pCBR.Break[j] = classBreaks[j + 1];
pCBR.Label[j] = classBreaks[j] + " - " + classBreaks[j + 1];
}
//** Ready for symbols
ISimpleMarkerSymbol pCitySym;
//** Setting the smallest symbol size
double dblFromSize = 0;
dblFromSize = 4;
//** Setting the largest symbol size
double dblToSize = 0;
dblToSize = 16;
//** Calculating the change in size between classes based on the min size,
//** max size, and # of classes
double dblStep = 0;
dblStep = (dblToSize - dblFromSize) / (pCBR.BreakCount - 1);
//** Setting the foreground color of the symbols
IRgbColor pColor;
pColor = new RgbColor();
pColor.Red = 179;
pColor.Green = 235;
pColor.Blue = 255;
//** Setting the outline color of the symbols
//** No color settings means black outline (r=0, g=0, b=0)
IRgbColor pOlColor;
pOlColor = new RgbColor();
int k = 0;
//** Setting symbol for each class
for (k = 0; k <= pCBR.BreakCount - 1; k++)
{
pCitySym = new SimpleMarkerSymbol();
pCitySym.Color = pColor;
pCitySym.Outline = true;
pCitySym.OutlineColor = pOlColor;
pCitySym.OutlineSize = 1;
pCitySym.Size = dblFromSize + (dblStep * Convert.ToDouble(k));
pCBR.Symbol[k] = (ISymbol)pCitySym;
}
//** Assigning the ClassBreaksRenderer to the layer
pGeoFLayer.Renderer = (IFeatureRenderer)pCBR;
pUIProperties = (IClassBreaksUIProperties)pCBR;
pUIProperties.LowBreak[0] = pCBR.MinimumBreak;
int m = 0;
for (m = 1; m <= pCBR.BreakCount - 1; m++)
{
pUIProperties.LowBreak[m] = classBreaks[m];
}
//** Creating a heading for the legend in the Table of Contents
pLegendInfo = (ILegendInfo)pCBR;
//qi
pLegendInfo.LegendGroup[0].Heading = "Population Class";
pLegendInfo.SymbolsAreGraduated = false;
}
else if (strChoice == "3")
{
//** User gets a graduated color map of state population normalized by area
pFClass = pFeatureWorkspace.OpenFeatureClass("us_boundaries.shp");
pFLayer.FeatureClass = pFClass;
pFLayer.Name = "State Polygon Area Rank";
pGeoFLayer = (IGeoFeatureLayer)pFLayer;
pMap.AddLayer(pFLayer);
//** Very similar to previous example
pTable = (ITable)pFClass;
pClasses = (IClassify) new Quantile();
pTableHist = (ITableHistogram) new TableHistogram();
pHist = (IHistogram)pTableHist;
pTableHist.Field = "Shape_Area";
pTableHist.Table = pTable;
//pTableHist.NormField = "Rank" '** Setting the normalization field before getting histogram
pHist.GetHistogram(out Values, out Frequencies);
pClasses.SetHistogramData(Values, Frequencies);
pClasses.Classify(5);
double[] classBreaks = new double[4];
classBreaks = (double[])pClasses.ClassBreaks;
pCBR = new ClassBreaksRenderer();
//** Making normalization settings for the renderer
//Dim pNorm As IDataNormalization
//pNorm = pCBR
//pNorm.NormalizationField = "Rank"
//pNorm.NormalizationType = esriDataNormalization.esriNormalizeByField
pCBR.BreakCount = 5;
pCBR.Field = "Shape_Area";
pCBR.MinimumBreak = classBreaks[0];
int t = 0;
pUIProperties = (IClassBreaksUIProperties)pCBR;
pUIProperties.LowBreak[0] = pCBR.MinimumBreak;
for (t = 0; t <= Information.UBound(classBreaks) - 1; t++)
{
pCBR.Break[t] = classBreaks[t + 1];
//** Want to round the class break values in the class labels
//** Use the NumericFormat class to set up a 1-decimal format
INumericFormat pNumericFormat;
pNumericFormat = (INumericFormat) new NumericFormat();
pNumericFormat.RoundingOption = ESRI.ArcGIS.esriSystem.esriRoundingOptionEnum.esriRoundNumberOfDecimals;
pNumericFormat.RoundingValue = 1;
INumberFormat pNumberFormat;
pNumberFormat = (INumberFormat)pNumericFormat;
string strRndVal1 = null;
string strRndVal2 = null;
//** Using ValueToString method to convert the numbers into the desired format
strRndVal1 = pNumberFormat.ValueToString(classBreaks[t]);
strRndVal2 = pNumberFormat.ValueToString(classBreaks[t + 1]);
pCBR.Label[t] = strRndVal1 + " - " + strRndVal2;
}
pGeoFLayer.Renderer = (IFeatureRenderer)pCBR;
for (t = 1; t <= 4; t++)
{
pUIProperties.LowBreak[t] = classBreaks[t];
}
//** Ready to set colors
//** Want to use AlgorithmicColorRamp to ramp from one color to another
IEnumColors pColorEnum;
IAlgorithmicColorRamp pAColorRamp;
IRgbColor pFromColor;
IRgbColor pToColor;
//** Setting up the algorithmic color ramp
pFromColor = new RgbColor();
pFromColor.RGB = Information.RGB(242, 233, 250);
// lavender
pToColor = new RgbColor();
pToColor.RGB = Information.RGB(56, 45, 121);
// deep purple
pAColorRamp = new AlgorithmicColorRamp();
pAColorRamp.Algorithm = ESRI.ArcGIS.Display.esriColorRampAlgorithm.esriHSVAlgorithm;
pAColorRamp.Size = 5;
//** # of classes
pAColorRamp.FromColor = pFromColor;
pAColorRamp.ToColor = pToColor;
bool blnRamp;
pAColorRamp.CreateRamp(out blnRamp);
pColorEnum = pAColorRamp.Colors;
pColorEnum.Reset();
int s = 0;
//** Loop thru the classes, creating a new symbol, assigning the next color
//** created by the ramp, and assigning the symbol to the renderer.
for (s = 0; s <= 4; s++)
{
ISimpleFillSymbol pSFSym;
pSFSym = new SimpleFillSymbol();
pSFSym.Color = pColorEnum.Next();
pCBR.Symbol[s] = (ISymbol)pSFSym;
}
//** Creating a heading for the legend in the Table of Contents
pLegendInfo = (ILegendInfo)pCBR;
//qi
pLegendInfo.LegendGroup[0].Heading = "Area (Degrees)";
pLegendInfo.SymbolsAreGraduated = false;
}
//** Refreshing the Table of Contents
pMxDoc.ActiveView.ContentsChanged();
pMxDoc.UpdateContents();
//** Re-drawing the map
pMxDoc.ActiveView.Refresh();
}
/// <summary>
/// Generates a raster renderer using the provided settings
/// </summary>
/// <returns>IRasterRenderer</returns>
private static IRasterRenderer GenerateRasterRenderer(IRaster pRaster)
{
IRasterStretchColorRampRenderer pStretchRen = new RasterStretchColorRampRenderer();
//IRasterUniqueValueRenderer pStretchRen = new RasterUniqueValueRenderer();
IRasterRenderer pRasRen = (IRasterRenderer)pStretchRen;
pRasRen.Raster = pRaster;
pRasRen.Update();
IRgbColor pFromColor = new RgbColorClass();
pFromColor.Red = 255;
pFromColor.Green = 0;
pFromColor.Blue = 0;
IRgbColor pToColor = new RgbColorClass();
pToColor.Red = 0;
pToColor.Green = 255;
pToColor.Blue = 0;
IAlgorithmicColorRamp pRamp = new AlgorithmicColorRamp();
pRamp.Size = 255;
pRamp.FromColor = pFromColor;
pRamp.ToColor = pToColor;
bool bOK;
pRamp.CreateRamp(out bOK);
pStretchRen.BandIndex = 0;
pStretchRen.ColorRamp = pRamp;
pRasRen.Update();
pRaster = null;
pRasRen = null;
pRamp = null;
pToColor = null;
pFromColor = null;
return (IRasterRenderer)pStretchRen;
}
private void btnRender_Click(object sender, EventArgs e)
{
IGeoFeatureLayer geoLayer = GetLayerByName(cboLayer.Text);
MessageBox.Show(geoLayer.FeatureClass.ShapeType.ToString());
switch (m_strOption)
{
//
case "Simple":
IRgbColor rgbColor = new RgbColor();
rgbColor.Red = Convert.ToInt32(cboRed.Text);
rgbColor.Green = Convert.ToInt32(cboGreen.Text);
rgbColor.Blue = Convert.ToInt32(cboGreen.Text);
//only used to Polygon Layer
ISymbol sym = null;
//Acording the shape type, use different sympol
if (geoLayer.FeatureClass.ShapeType == esriGeometryType.esriGeometryPolygon)
{ //Polygon Feature
//Orginate Code
// ISimpleFillSymbol fillSym = new SimpleFillSymbol() ;
//sym.style
// fillSym.Style = esriSimpleFillStyle.esriSFSSolid;
//sym.color
// fillSym.Color = rgbColor;
//new Code for IGradientFillSymbol by jin
IGradientFillSymbol fillSym = new GradientFillSymbol();
fillSym.Style = esriGradientFillStyle.esriGFSBuffered;
IRgbColor fromColor = new RgbColor();
fromColor.Red = 255;
fromColor.Green = 0;
fromColor.Blue = 0;
IRgbColor toColor = new RgbColor();
toColor.Red = 0;
toColor.Green = 0;
toColor.Blue = 255;
IAlgorithmicColorRamp ramp = new AlgorithmicColorRamp();
ramp.Size = 16;
ramp.FromColor = fromColor;
ramp.ToColor = toColor;
fillSym.ColorRamp = ramp;
sym = fillSym as ISymbol;
}
else if (geoLayer.FeatureClass.ShapeType == esriGeometryType.esriGeometryPolyline)
{ //Line Feature
// ISimpleLineSymbol lineSym = new SimpleLineSymbol();
// lineSym.Style = esriSimpleLineStyle.esriSLSSolid;
// lineSym.Color = rgbColor;
// sym = lineSym as ISymbol;
//
ICartographicLineSymbol cartLineSym = new CartographicLineSymbol();
cartLineSym.Color = rgbColor;
cartLineSym.Cap = esriLineCapStyle.esriLCSSquare;
cartLineSym.Join = esriLineJoinStyle.esriLJSMitre;
ISimpleLineDecorationElement pSimpleLineDecoEle = new SimpleLineDecorationElement();
pSimpleLineDecoEle.FlipAll = true;
pSimpleLineDecoEle.FlipFirst = true;
ILineDecoration pLineDeco = new LineDecoration();
pLineDeco.AddElement(pSimpleLineDecoEle);
//
//QI
ILineProperties pLinePro = cartLineSym as ILineProperties;
pLinePro.LineDecoration = pLineDeco;
sym = cartLineSym as ISymbol;
}
else if (geoLayer.FeatureClass.ShapeType == esriGeometryType.esriGeometryPoint)
{ //Point Feature
ISimpleMarkerSymbol marketSym = new SimpleMarkerSymbol();
marketSym.Style = esriSimpleMarkerStyle.esriSMSCircle; //;esriSMSX;cross
marketSym.Color = rgbColor;
sym = marketSym as ISymbol;
}
ApplySimple(geoLayer, sym);
break;
case "Unique":
ApplyUniqueValue(geoLayer, cboUniqueVals.Text);
break;
case "Chart":
ApplyBarChartValue(geoLayer, cbxProp1.Text);
break;
case "Breaks":
ApplyClsssBreaks(geoLayer, cboNumericVals.Text, long.Parse(cboBreaks.Text));
break;
default:
break;
}
}
