/// <summary>
/// 栅格分级渲染（注意选中字段唯一值个数不能小于设置的唯一值个数）
/// </summary>
/// <param name="rasterClassRenderer">分级渲染设置</param>
/// <param name="pStyleGalleryItem">颜色带样式</param>
public void ClassRenderer(IRasterClassifyColorRampRenderer rasterClassRenderer,
IStyleGalleryItem pStyleGalleryItem)
{
if (pStyleGalleryItem == null)
{
MessageBox.Show(@"Color ramp cannot be empty");
return;
}
IRasterRenderer rasterRend = (IRasterRenderer)rasterClassRenderer;
rasterRend.Raster = rasterLayer.Raster;
rasterRend.Update();
IEnumColors enumColors = RenderHelper.GetColorRamp(pStyleGalleryItem, rasterClassRenderer.ClassCount).Colors;
enumColors.Reset();
IFillSymbol fillSymbol = new SimpleFillSymbolClass();
for (int i = 0; i < rasterClassRenderer.ClassCount; i++)
{
fillSymbol.Color = enumColors.Next();
rasterClassRenderer.set_Symbol(i, (ISymbol)fillSymbol);
string label = Math.Round(rasterClassRenderer.Break[i], 2) + "-"
+ Math.Round(rasterClassRenderer.Break[i + 1], 2);
rasterClassRenderer.set_Label(i, label);
}
rasterLayer.Renderer = rasterRend;
}
private void method_4(IColorRamp icolorRamp_1,
IRasterClassifyColorRampRenderer irasterClassifyColorRampRenderer_1, int int_0, ITable itable_0,
string string_0, string string_1)
{
try
{
bool flag;
if (string_0.Length > 0)
{
irasterClassifyColorRampRenderer_1.ClassField = string_0;
}
if (string_1.Length > 0)
{
irasterClassifyColorRampRenderer_1.NormField = string_1;
}
IRasterRenderer renderer = (IRasterRenderer)irasterClassifyColorRampRenderer_1;
renderer.Raster = this.irasterLayer_0.Raster;
irasterClassifyColorRampRenderer_1.ClassCount = int_0;
renderer.Update();
this.bool_0 = false;
this.cboClassifyNum.SelectedIndex = irasterClassifyColorRampRenderer_1.ClassCount - 1;
this.bool_0 = true;
icolorRamp_1.Size = irasterClassifyColorRampRenderer_1.ClassCount;
icolorRamp_1.CreateRamp(out flag);
IEnumColors colors = icolorRamp_1.Colors;
ISymbol symbol = null;
for (int i = 0; i < irasterClassifyColorRampRenderer_1.ClassCount; i++)
{
string str;
IColor color = colors.Next();
ISimpleFillSymbol symbol2 = new SimpleFillSymbolClass
{
Color = color,
Style = esriSimpleFillStyle.esriSFSSolid
};
symbol = symbol2 as ISymbol;
irasterClassifyColorRampRenderer_1.set_Symbol(i, symbol);
if (i == (irasterClassifyColorRampRenderer_1.ClassCount - 1))
{
str = irasterClassifyColorRampRenderer_1.get_Break(i).ToString("0.####");
}
else
{
str = irasterClassifyColorRampRenderer_1.get_Break(i).ToString("0.####") + " - " +
irasterClassifyColorRampRenderer_1.get_Break(i + 1).ToString("0.####");
}
irasterClassifyColorRampRenderer_1.set_Label(i, str);
}
}
catch (Exception exception)
{
Logger.Current.Error("", exception, "");
}
}
public void Apply()
{
try
{
IObjectCopy copy = new ObjectCopyClass();
IRasterClassifyColorRampRenderer renderer1 =
copy.Copy(this.irasterClassifyColorRampRenderer_0) as IRasterClassifyColorRampRenderer;
this.irasterLayer_0.Renderer = this.irasterClassifyColorRampRenderer_0 as IRasterRenderer;
}
catch (Exception)
{
}
}
/// <summary>
/// 获取分级数
/// </summary>
/// <param name="classField">字段</param>
/// <param name="classCount">类别总数</param>
/// <param name="classMethod">分级算法</param>
/// <returns></returns>
public IList <double> GetRasterBreaks(string classField, int classCount, string classMethod)
{
IRasterClassifyColorRampRenderer pRClassRend = GetRasterClassifyRenderer(classField, classCount, classMethod);
IList <double> classBreaks = new List <double>();
//count + 1，因为分级数比间隔数（类别总数）多一个
for (int i = 0; i < classCount + 1; i++)
{
//取6位小数
classBreaks.Add(Math.Round(pRClassRend.Break[i], 2));
}
return(classBreaks);
}
public static void CreateClassBreaks(double maxRasterValue, int iClassCount, IRasterClassifyColorRampRenderer pRasterClassify)
{
maxRasterValue = GetFormattedRange(maxRasterValue);
double interval = maxRasterValue / iClassCount;
interval = GetFormattedRange(interval);
int iRound = Math.Abs(GetMagnitude(maxRasterValue));
interval = Math.Round(interval * iRound, iRound + 1) / iRound;
string sFormat = "#,#0";
if (iRound < 0)
{
sFormat = string.Format("{0}.{1}", sFormat, new string('0', iRound + 1));
}
else
{
sFormat = "#,#0.00";
}
if (pRasterClassify.ClassCount != iClassCount)
{
pRasterClassify.ClassCount = iClassCount;
}
for (int i = 0; i <= iClassCount; i++)
{
double fBreak = Math.Round(interval * i, iRound);
pRasterClassify.Break[i] = fBreak;
if (i < iClassCount - 1)
{
pRasterClassify.Label[i] = string.Format("{0} to {1}", fBreak.ToString(sFormat), Math.Round(fBreak + interval, iRound).ToString(sFormat));
}
else if (i == iClassCount - 1)
{
pRasterClassify.Label[i] = "> " + fBreak.ToString(sFormat);
}
}
}
/// <summary>
/// 分类色带渲染
/// </summary>
/// <param name="classCount">分类数</param>
/// <param name="colorRamp">色带</param>
public void ClassifyColorRampRenderer(ILayer pLayerR, IColorRamp colorRamp, string classfield, System.Windows.Forms.DataGridView datagridview)
{
try
{
IRasterLayer pRasterLayer = pLayerR as IRasterLayer;
IRaster raster = pRasterLayer.Raster;
IRasterRenderer pRasterRenderer = new RasterClassifyColorRampRenderer() as IRasterRenderer;
pRasterRenderer.Raster = raster;
IRasterClassifyColorRampRenderer classifyRenderer = pRasterRenderer as IRasterClassifyColorRampRenderer;
int classcount = datagridview.RowCount;
classifyRenderer.ClassCount = classcount;
classifyRenderer.ClassField = classfield;
for (int i = 0; i < datagridview.RowCount; i++)
{
classifyRenderer.set_Break(i, double.Parse(datagridview.Rows[i].Cells[0].Value.ToString()));
}
pRasterRenderer.Update();
colorRamp.Size = 15;
bool pOk;
colorRamp.CreateRamp(out pOk);
//create symbol for the classes
IFillSymbol fillSymbol = new SimpleFillSymbol();
for (int i = 0; i < classifyRenderer.ClassCount - 1; i++)
{
fillSymbol.Color = colorRamp.get_Color(i);
classifyRenderer.set_Symbol(i, (ISymbol)fillSymbol);
classifyRenderer.set_Label(i, classifyRenderer.get_Break(i).ToString() + "—" + datagridview.Rows[i].Cells[1].Value.ToString());
}
pRasterLayer.Renderer = classifyRenderer as IRasterRenderer;
}
catch
{
}
}
private static void CreateDoDClassBreaks(double dMax, double dMin, int iClassCount, ref IRasterClassifyColorRampRenderer pRasterClassify)
{
double fMax = Math.Max(Math.Abs(dMax), Math.Abs(dMin));
double fRange = 2 * fMax;
double interval = fRange / iClassCount;
int iRound = GetMagnitude(fRange);
interval = Math.Round(interval * Math.Abs(iRound), Math.Abs(iRound) + 2) / Math.Abs(iRound);
string sFormat = "#,#0";
if (iRound < 0)
{
iRound = Math.Abs(iRound) + 2;
for (int i = 0; i <= iRound; i++)
{
if (i == 0)
{
sFormat += ".";
}
sFormat += "0";
}
}
else
{
sFormat = "#,#0.00";
}
//Debug.Print("Class count: " + pRasterClassify.ClassCount);
//Debug.Print("Interval: {0}", interval);
//Debug.Print("Max: {0}", fMax);
for (int i = 0; i <= iClassCount; i++)
{
double fBreak = Math.Round(-1 * fMax + (interval * i), iRound);
//Debug.Print("Break " + i.ToString + " = " + fBreak);
pRasterClassify.Break[i] = fBreak;
if (i == 0)
{
pRasterClassify.Break[i] = fBreak;
fBreak = Math.Round(-1 * fMax + (interval * 1), iRound);
pRasterClassify.Label[i] = "< " + fBreak.ToString(sFormat);
}
else if (i < iClassCount - 1)
{
if (i == 10)
{
pRasterClassify.Break[i] = 0;
pRasterClassify.Label[i] = (0).ToString(sFormat) + " to " + Math.Round(fBreak + interval, iRound).ToString(sFormat);
continue;
}
pRasterClassify.Label[i] = (fBreak).ToString(sFormat) + " to " + Math.Round(fBreak + interval, iRound).ToString(sFormat);
}
else if (i == iClassCount - 1)
{
pRasterClassify.Label[i] = "> " + fBreak.ToString(sFormat);
}
}
}
