/// <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, "");
}
}
/// <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
{
}
}