private void btnGO_Click(object sender, System.EventArgs e)
{
IFeatureClass pFClass = null; //获得输入特征数据类
IWorkspace pWorkspace;
object Missing = Type.Missing;
string fileName;
string rasterPath;
string shpFile;
int startX, endX;
string sFieldName; //选择要进行分析的字段
if (bDataPath == true)
{
fileName = comboBoxInData.Text;
string shpDir = fileName.Substring(0, fileName.LastIndexOf("\\"));
startX = fileName.LastIndexOf("\\");
endX = fileName.Length;
shpFile = fileName.Substring(startX + 1, endX - startX - 1);
pFClass = Utility.OpenFeatureClassFromShapefile(shpDir, shpFile);
}
else
{
pFClass = GetFeatureFromMapLyr(comboBoxInData.Text);
}
IFeatureLayer pFeatLayer = new FeatureLayerClass();
pFeatLayer.FeatureClass = pFClass;
rasterPath = txtRasterPath.Text;
IFeatureClassDescriptor pFeatClsDes = new FeatureClassDescriptorClass();
if (comboBoxField.Text != "无")
{
pFeatClsDes.Create(pFClass, null, comboBoxField.Text);
}
else
{
pFeatClsDes.Create(pFClass, null, "");
}
try
{
IDensityOp pDensityOp = new RasterDensityOpClass();
string sCellSize = txtCellSize.Text;
double dCellSize = Convert.ToDouble(sCellSize);
string sRadius = txtSearchRadius.Text;
double dRadius = Convert.ToDouble(sRadius);
object objRadius = dRadius;
pDensityOp = Utility.SetRasterDensityAnalysisEnv(rasterPath, dCellSize, pFeatLayer);
IRasterNeighborhood pRasNeighborhood = new RasterNeighborhoodClass();
if (comboBoxAreaUnit.Text == "按地图单位")
{
pRasNeighborhood.SetCircle(dRadius, esriGeoAnalysisUnitsEnum.esriUnitsMap);
}
else
{
pRasNeighborhood.SetCircle(dRadius, esriGeoAnalysisUnitsEnum.esriUnitsCells);
}
IRaster pOutRaster = null;
switch (pFClass.ShapeType)
{
case esriGeometryType.esriGeometryPoint:
if (rdoKernel.Checked == false)
{
pOutRaster = pDensityOp.PointDensity(pFeatClsDes as IGeoDataset, pRasNeighborhood, ref Missing) as IRaster;
}
else
{
pOutRaster = pDensityOp.KernelDensity(pFeatClsDes as IGeoDataset, ref objRadius, ref Missing) as IRaster;
}
break;
case esriGeometryType.esriGeometryPolyline:
if (rdoKernel.Checked == false)
{
pOutRaster = pDensityOp.LineDensity(pFeatClsDes as IGeoDataset, ref objRadius, ref Missing) as IRaster;
}
else
{
pOutRaster = pDensityOp.KernelDensity(pFeatClsDes as IGeoDataset, ref objRadius, ref Missing) as IRaster;
}
break;
}
//着色
IRasterLayer pRasterLayer = new RasterLayerClass();
pRasterLayer.Name = "密度栅格";
Utility.ConvertRasterToRsDataset(rasterPath, pOutRaster, "密度栅格");
pRasterLayer = Utility.SetRsLayerClassifiedColor(pOutRaster);
pMainFrm.getMapControl().AddLayer(pRasterLayer, 0);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
/// <summary>
/// Runs the selected density operations on the input feature class.
/// </summary>
/// <param name="pFC"></param>
/// <returns></returns>
private IRaster Density(IFeatureClass pFC)
{
IRaster pRaster = null;
try
{
IDensityOp pDensityOp = new RasterDensityOpClass();
//create a feature class descriptor to specify a field
IFeatureClassDescriptor pFCD = new FeatureClassDescriptorClass();
if (m_sField != "None")
{
pFCD.Create(pFC, null, m_sField);
}
else
{
pFCD.Create(pFC, null, null);
}
//run the density op
//set the output resolution
//make sure this scale factor is always in right units.
object oScaleFactor = 1;
switch (m_sDensityUnits + m_sMapUnits)
{
case "per square km" + "Meter":
oScaleFactor = 1000;
break;
case "per square mile" + "Meter":
oScaleFactor = 1609.344;
break;
case "per square mile" + "Foot_US":
case "per square mile" + "Foot":
oScaleFactor = 5280;
break;
case "per square km" + "Foot_US":
case "per square km" + "Foot":
oScaleFactor = 3280.84;
break;
case "per square nm" + "Meter":
oScaleFactor = 1852;
break;
case "per square nm" + "Foot_US":
case "per square nm" + "Foot":
oScaleFactor = 6076.12;
break;
}
object oRadius = m_dRadius;
IGeoDataset pOutRaster = null;
if (m_sDensityType == "Kernel")
{
pOutRaster = pDensityOp.KernelDensity((IGeoDataset)pFCD, ref oRadius, ref oScaleFactor);
}
else
{
esriGeometryType thisType = pFC.ShapeType;
if (thisType == esriGeometryType.esriGeometryPolyline)
{
pOutRaster = pDensityOp.LineDensity((IGeoDataset)pFCD, ref oRadius, ref oScaleFactor);
}
else if (thisType == esriGeometryType.esriGeometryPoint)
{
IRasterNeighborhood pNbr = new RasterNeighborhoodClass();
if (m_sRadiusType == "Cells")
{
pNbr.SetCircle(m_dRadius, esriGeoAnalysisUnitsEnum.esriUnitsCells);
}
else
{
pNbr.SetCircle(m_dRadius, esriGeoAnalysisUnitsEnum.esriUnitsMap);
}
pOutRaster = pDensityOp.PointDensity((IGeoDataset)pFCD, pNbr, ref oScaleFactor); //ref oCellSize);
}
}
pRaster = (IRaster)pOutRaster;
//check output spatial reference
IRasterProps pRProps = (IRasterProps)pRaster;
pRProps.SpatialReference = m_pLayerSR;
//save the raster to disk
IWorkspace pOutWS = clsStatic.OpenWorkspace(m_sOutPath);
ISaveAs pSaveAs = (ISaveAs)pRaster;
if (pSaveAs.CanSaveAs("GRID") == true)
{
pSaveAs.SaveAs(pFC.AliasName + "_" + m_sOutName, pOutWS, "GRID");
}
IMap pMap = ArcMap.Document.FocusMap;
//calculate raster stats
IRasterDataset pRDS = clsStatic.OpenRasterDataset(m_sOutPath, pFC.AliasName + "_" + m_sOutName);
CalcStats(pRDS);
//add the layer to the map
IRasterLayer pRL = clsStatic.RasterDataset2RasterLayer(m_sOutPath, pFC.AliasName + "_" + m_sOutName, false, pMap);
IRgbColor pRGB1 = new RgbColorClass();
IRgbColor pRGB2 = new RgbColorClass();
pRGB2.Blue = 0;
pRGB2.Green = 0;
pRGB2.Red = 255;
pRGB1.Blue = 255;
pRGB1.Green = 0;
pRGB1.Red = 0;
//pRL.CreateFromRaster(pRaster);
CreateRasterStretchRenderer(pRL, pRGB1, pRGB2);
pMap.AddLayer(pRL);
return(pRaster);
}
catch (Exception ex)
{
clsStatic.ShowErrorMessage(ex.ToString());
}
return(pRaster);
}
private void btnGO_Click(object sender, System.EventArgs e)
{
IFeatureClass pFClass=null;//获得输入特征数据类
IWorkspace pWorkspace;
object Missing = Type.Missing;
string fileName;
string rasterPath;
string shpFile;
int startX,endX;
string sFieldName;//选择要进行分析的字段
if(bDataPath==true)
{
fileName=comboBoxInData.Text;
string shpDir =fileName.Substring(0, fileName.LastIndexOf("\\"));
startX=fileName.LastIndexOf("\\");
endX=fileName.Length;
shpFile=fileName.Substring(startX+1,endX-startX-1);
pFClass=Utility.OpenFeatureClassFromShapefile(shpDir,shpFile);
}
else
{
pFClass=GetFeatureFromMapLyr(comboBoxInData.Text);
}
IFeatureLayer pFeatLayer =new FeatureLayerClass();
pFeatLayer.FeatureClass=pFClass;
rasterPath=txtRasterPath.Text;
IFeatureClassDescriptor pFeatClsDes=new FeatureClassDescriptorClass();
if(comboBoxField.Text!="无")
pFeatClsDes.Create(pFClass,null,comboBoxField.Text);
else
pFeatClsDes.Create(pFClass,null,"");
try
{
IDensityOp pDensityOp=new RasterDensityOpClass();
string sCellSize=txtCellSize.Text ;
double dCellSize=Convert.ToDouble(sCellSize);
string sRadius=txtSearchRadius.Text;
double dRadius=Convert.ToDouble(sRadius);
object objRadius=dRadius;
pDensityOp=Utility.SetRasterDensityAnalysisEnv(rasterPath,dCellSize,pFeatLayer);
IRasterNeighborhood pRasNeighborhood=new RasterNeighborhoodClass();
if(comboBoxAreaUnit.Text=="按地图单位")
pRasNeighborhood.SetCircle(dRadius,esriGeoAnalysisUnitsEnum.esriUnitsMap);
else
pRasNeighborhood.SetCircle(dRadius,esriGeoAnalysisUnitsEnum.esriUnitsCells);
IRaster pOutRaster=null;
switch(pFClass.ShapeType)
{
case esriGeometryType.esriGeometryPoint:
if(rdoKernel.Checked==false)
pOutRaster= pDensityOp.PointDensity(pFeatClsDes as IGeoDataset,pRasNeighborhood,ref Missing) as IRaster;
else
pOutRaster= pDensityOp.KernelDensity(pFeatClsDes as IGeoDataset,ref objRadius,ref Missing) as IRaster;
break;
case esriGeometryType.esriGeometryPolyline:
if(rdoKernel.Checked==false)
pOutRaster= pDensityOp.LineDensity(pFeatClsDes as IGeoDataset,ref objRadius,ref Missing) as IRaster;
else
pOutRaster=pDensityOp.KernelDensity(pFeatClsDes as IGeoDataset,ref objRadius,ref Missing) as IRaster;
break;
}
//着色
IRasterLayer pRasterLayer=new RasterLayerClass();
pRasterLayer.Name="密度栅格";
Utility.ConvertRasterToRsDataset(rasterPath,pOutRaster,"密度栅格");
pRasterLayer = Utility.SetRsLayerClassifiedColor(pOutRaster);
pMainFrm.getMapControl().AddLayer(pRasterLayer,0);
}
catch(Exception ex)
{
MessageBox.Show(ex.Message);
}
}