private void IDWInterpolation(IFeatureClass pointFeature, IRaster refRaster, string name)
{
IFeatureClassDescriptor pointDescript = new FeatureClassDescriptorClass();
pointDescript.Create(pointFeature, null, name);
object extend = (refRaster as IGeoDataset).Extent;
IRasterProps refProps = refRaster as IRasterProps;
object cell = refProps.MeanCellSize().X;
IInterpolationOp interpla = new RasterInterpolationOpClass();
IRasterAnalysisEnvironment IDWEnv = interpla as IRasterAnalysisEnvironment;
IDWEnv.SetCellSize(esriRasterEnvSettingEnum.esriRasterEnvValue, ref cell);
IDWEnv.SetExtent(esriRasterEnvSettingEnum.esriRasterEnvValue, ref extend);
IGeoDataset output = interpla.IDW((IGeoDataset)pointDescript, 2, null, null);
IGeoDataset input = refRaster as IGeoDataset;
IExtractionOp op = new RasterExtractionOpClass();
output = op.Raster(output, input);
var clipRaster = (IRaster)output;
ISaveAs pSaveAs = clipRaster as ISaveAs;
IWorkspaceFactory workspaceFac = new RasterWorkspaceFactoryClass();
var groups = Regex.Match(name, @"^(\d+)_(\d+)_(\d+)$").Groups;
name = string.Format("{0:D2}{1:D2}", int.Parse(groups[2].Value), int.Parse(groups[3].Value));
IDataset outDataset = pSaveAs.SaveAs(fileName + name + ".img", workspaceFac.OpenFromFile(filePath, 0), "IMAGINE Image");
System.Runtime.InteropServices.Marshal.ReleaseComObject(outDataset);
}
public IGeoDataset GetIDW(IFeatureClass _pFeatureClass, string _pFieldName, double _pDistance, double _pCell, int _pPower)
{
IGeoDataset Geo = _pFeatureClass as IGeoDataset;
object pExtent = Geo.Extent;
object o = Type.Missing;
IFeatureClassDescriptor pFeatureClassDes = new FeatureClassDescriptorClass();
pFeatureClassDes.Create(_pFeatureClass, null, _pFieldName);
IInterpolationOp pInterOp = new RasterInterpolationOpClass();
IRasterAnalysisEnvironment pRasterAEnv = pInterOp as IRasterAnalysisEnvironment;
// pRasterAEnv.Mask = Geo;
pRasterAEnv.SetExtent(esriRasterEnvSettingEnum.esriRasterEnvValue, ref pExtent, ref o);
object pCellSize = _pCell;//可以根据不同的点图层进行设置
pRasterAEnv.SetCellSize(esriRasterEnvSettingEnum.esriRasterEnvValue, ref pCellSize);
IRasterRadius pRasterrad = new RasterRadiusClass();
object obj = Type.Missing;
// pRasterrad.SetFixed(_pDistance, ref obj);
pRasterrad.SetVariable(12);
object pBar = Type.Missing;
IGeoDataset pGeoIDW = pInterOp.IDW(pFeatureClassDes as IGeoDataset, _pPower, pRasterrad, ref pBar);
return(pGeoIDW);
}
private IGeoDataset GetBeforeGeo(IFeatureClass fc)
{
IInterpolationOp3 pInterpolationOp = new RasterInterpolationOpClass();
IFields fields = fc.Fields;
int index = fields.FindFieldByAliasName("高程");
IField field = fields.get_Field(index);
ISpatialFilter filter = new SpatialFilter();
filter.Geometry = geo;
filter.SpatialRel = esriSpatialRelEnum.esriSpatialRelContains;
IFeatureClassDescriptor pFcd = new FeatureClassDescriptorClass();
pFcd.Create(fc, filter, field.Name);
//定义搜索半径
IRasterRadius pRadius = new RasterRadiusClass();
object Missing = Type.Missing;
pRadius.SetVariable(12, ref Missing);
//设置栅格图像的单位大小
object cellSizeProvider = 5;
IRasterAnalysisEnvironment pEnv = pInterpolationOp as IRasterAnalysisEnvironment;
pEnv.SetCellSize(esriRasterEnvSettingEnum.esriRasterEnvValue, ref cellSizeProvider);
IGeoDataset outGeoDataset = pInterpolationOp.IDW(pFcd as IGeoDataset, 2, pRadius, ref Missing);
return(outGeoDataset);
}
public static void Mlayer_IDW_Click()
{
// 用反距离IDW插值生成的栅格图像。如下：
IInterpolationOp pInterpolationOp = new RasterInterpolationOpClass();
IWorkspaceFactory pWorkspaceFactory = new ShapefileWorkspaceFactory();
string pPath = Application.StartupPath + @"\MakeContours\Cont.shp";
string pFolder = System.IO.Path.GetDirectoryName(pPath);
string pFileName = System.IO.Path.GetFileName(pPath);
IWorkspace pWorkspace = pWorkspaceFactory.OpenFromFile(pFolder, 0);
IFeatureWorkspace pFeatureWorkspace = pWorkspace as IFeatureWorkspace;
IFeatureClass oFeatureClass = pFeatureWorkspace.OpenFeatureClass(pFileName);
IFeatureClassDescriptor pFCDescriptor = new FeatureClassDescriptorClass();
pFCDescriptor.Create(oFeatureClass, null, "shape.z");
IRasterRadius pRadius = new RasterRadiusClass();
object objectMaxDistance = null;
object objectbarrier = null;
object missing = Type.Missing;
pRadius.SetVariable(12, ref objectMaxDistance);
object dCellSize = 1;
object snapRasterData = Type.Missing;
IEnvelope pExtent;
pExtent = new EnvelopeClass();
Double xmin = 27202;
Double xmax = 31550;
Double ymin = 19104;
Double ymax = 22947;
pExtent.PutCoords(xmin, ymin, xmax, ymax);
object extentProvider = pExtent;
IRasterAnalysisEnvironment pEnv = pInterpolationOp as IRasterAnalysisEnvironment;
pEnv.SetCellSize(esriRasterEnvSettingEnum.esriRasterEnvValue, ref dCellSize);
pEnv.SetExtent(esriRasterEnvSettingEnum.esriRasterEnvValue, ref extentProvider, ref snapRasterData);
IGeoDataset poutGeoDataset = pInterpolationOp.IDW((IGeoDataset)pFCDescriptor, 2, pRadius, ref objectbarrier);
ISurfaceOp surOp = new RasterSurfaceOpClass();
IRaster pOutRaster = poutGeoDataset as IRaster;
IRasterLayer pOutRasLayer = new RasterLayer();
pOutRasLayer.CreateFromRaster(pOutRaster);
IMap pMap = Common.DataEditCommon.g_pMap;
pMap.AddLayer(pOutRasLayer);
Common.DataEditCommon.g_axTocControl.Refresh();
Common.DataEditCommon.g_pAxMapControl.ActiveView.Refresh();
}
private IGeoDataset GetAfterGeo(IFeatureClass fc)
{
try
{
ISpatialFilter pSpatialFilter = new SpatialFilter();
pSpatialFilter.Geometry = geo;
pSpatialFilter.SpatialRel = esriSpatialRelEnum.esriSpatialRelContains;
int count = fc.FeatureCount(pSpatialFilter);
if (count == 0)
{
return(null);
}
IFeatureCursor cursor = fc.Search(pSpatialFilter, true);
IFeature feature;
while ((feature = cursor.NextFeature()) != null)
{
int index = feature.Fields.FindField("HEIGHT");
if (index == -1)
{
continue;
}
feature.set_Value(index, h);
feature.Store();
}
IInterpolationOp3 pInterpolationOp = new RasterInterpolationOpClass();
IFields fields = fc.Fields;
int index1 = fields.FindField("HEIGHT");
if (index1 == -1)
{
return(null);
}
IField field = fields.get_Field(index1);
IFeatureClassDescriptor pFcd = new FeatureClassDescriptorClass();
pFcd.Create(fc, pSpatialFilter, field.Name);
//定义搜索半径
IRasterRadius pRadius = new RasterRadiusClass();
object Missing = Type.Missing;
pRadius.SetVariable(12, ref Missing);
//设置栅格图像的单位大小
object cellSizeProvider = 5;
IRasterAnalysisEnvironment pEnv = pInterpolationOp as IRasterAnalysisEnvironment;
pEnv.SetCellSize(esriRasterEnvSettingEnum.esriRasterEnvValue, ref cellSizeProvider);
IGeoDataset outGeoDataset = pInterpolationOp.IDW(pFcd as IGeoDataset, 2, pRadius, ref Missing);
return(outGeoDataset);
}
catch (System.Exception ex)
{
return(null);
}
}
private IGeoDataset GetBeforeGeo(IFeatureClass fc, IGeometry geo)
{
try
{
WaitForm.SetCaption("正在生成栅格表面...");
IInterpolationOp3 pInterpolationOp = new RasterInterpolationOpClass();
IFields fields = fc.Fields;
FacilityClass fac = FacilityClassManager.Instance.GetFacilityClassByName("GCD");
DFDataConfig.Class.FieldInfo fi = fac.GetFieldInfoBySystemName("Altitude");
if (fi == null)
{
return(null);
}
int index = fields.FindField(fi.Name);
if (index == -1)
{
return(null);
}
IField field = fields.get_Field(index);
ISpatialFilter filter = new SpatialFilter();
filter.Geometry = geo;
filter.SpatialRel = esriSpatialRelEnum.esriSpatialRelContains;
int count = fc.FeatureCount(filter);
if (count == 0)
{
return(null);
}
IFeatureClassDescriptor pFcd = new FeatureClassDescriptorClass();
pFcd.Create(fc, filter, field.Name);
//定义搜索半径
IRasterRadius pRadius = new RasterRadiusClass();
object Missing = Type.Missing;
pRadius.SetVariable(12, ref Missing);
//设置栅格图像的单位大小
object cellSizeProvider = 5;
IRasterAnalysisEnvironment pEnv = pInterpolationOp as IRasterAnalysisEnvironment;
pEnv.SetCellSize(esriRasterEnvSettingEnum.esriRasterEnvValue, ref cellSizeProvider);
IGeoDataset outGeoDataset = pInterpolationOp.IDW(pFcd as IGeoDataset, 2, pRadius, ref Missing);
return(outGeoDataset);
}
catch (System.Exception ex)
{
return(null);
WaitForm.Stop();
}
}
}//Open Feature Class
private void IDWOperate(IFeatureClass inFC)
{
IFeatureClassDescriptor iFCDesc = new FeatureClassDescriptorClass();
//获取选中的字符串
string sFieldName = comboBox1.SelectedText;
iFCDesc.Create(inFC, null, sFieldName);
//创建RasterInterpolationOp对象
IInterpolationOp iIo = new RasterInterpolationOpClass();
//设置输出Raster网格大小，默认的Raster输出空间范围和输入数据相同
IRasterAnalysisEnvironment iRae = (IRasterAnalysisEnvironment)iIo;
object oCellSize = (object)Convert.ToDouble(textBox2.Text);
iRae.SetCellSize(esriRasterEnvSettingEnum.esriRasterEnvValue, ref oCellSize);
//搜索范围设置
IRasterRadius iRadius = new RasterRadiusClass();
//switch (comboBox2.SelectedIndex)
//{
// case 0:
object dis = (object)Convert.ToDouble(textBox3.Text);
iRadius.SetVariable(Convert.ToInt32(textBox1.Text), ref dis);
// break;
// case 1:
// object cou = (object)Convert.ToDouble(textBox3.Text);
// iRadius.SetFixed(Convert.ToDouble(textBox1.Text), ref cou);
// break;
// default:
// break;
//}
IGeoDataset iInputGeo = (IGeoDataset)iFCDesc;
object barrier = Type.Missing;
IGeoDataset iOutputGeo = iIo.IDW(iInputGeo, Convert.ToDouble(textBox2.Text), iRadius, ref barrier);
IRaster iOutRaster = (IRaster)iOutputGeo;
IRasterBandCollection iRasBnadC = (IRasterBandCollection)iOutRaster;
IWorkspaceFactory iWSF = new RasterWorkspaceFactoryClass();
IWorkspace iWS = iWSF.OpenFromFile(textBox5.Text, 0);
IDataset iDs = iRasBnadC.SaveAs("Raster_test", iWS, "GRID");
}
public static void Mlayer_IDW_Click()
{
// 用反距离IDW插值生成的栅格图像。如下：
IInterpolationOp pInterpolationOp = new RasterInterpolationOpClass();
IWorkspaceFactory pWorkspaceFactory = new ShapefileWorkspaceFactory();
string pPath = Application.StartupPath + @"\MakeContours\Cont.shp";
string pFolder = System.IO.Path.GetDirectoryName(pPath);
string pFileName = System.IO.Path.GetFileName(pPath);
IWorkspace pWorkspace = pWorkspaceFactory.OpenFromFile(pFolder, 0);
IFeatureWorkspace pFeatureWorkspace = pWorkspace as IFeatureWorkspace;
IFeatureClass oFeatureClass = pFeatureWorkspace.OpenFeatureClass(pFileName);
IFeatureClassDescriptor pFCDescriptor = new FeatureClassDescriptorClass();
pFCDescriptor.Create(oFeatureClass, null, "shape.z");
IRasterRadius pRadius = new RasterRadiusClass();
object objectMaxDistance = null;
object objectbarrier = null;
object missing = Type.Missing;
pRadius.SetVariable(12, ref objectMaxDistance);
object dCellSize =1;
object snapRasterData = Type.Missing;
IEnvelope pExtent;
pExtent = new EnvelopeClass();
Double xmin = 27202;
Double xmax = 31550;
Double ymin = 19104;
Double ymax = 22947;
pExtent.PutCoords(xmin, ymin, xmax, ymax);
object extentProvider = pExtent;
IRasterAnalysisEnvironment pEnv = pInterpolationOp as IRasterAnalysisEnvironment;
pEnv.SetCellSize(esriRasterEnvSettingEnum.esriRasterEnvValue, ref dCellSize);
pEnv.SetExtent(esriRasterEnvSettingEnum.esriRasterEnvValue, ref extentProvider, ref snapRasterData);
IGeoDataset poutGeoDataset = pInterpolationOp.IDW((IGeoDataset)pFCDescriptor, 2, pRadius, ref objectbarrier);
ISurfaceOp surOp = new RasterSurfaceOpClass();
IRaster pOutRaster = poutGeoDataset as IRaster;
IRasterLayer pOutRasLayer = new RasterLayer();
pOutRasLayer.CreateFromRaster(pOutRaster);
IMap pMap = Common.DataEditCommon.g_pMap;
pMap.AddLayer(pOutRasLayer);
Common.DataEditCommon.g_axTocControl.Refresh();
Common.DataEditCommon.g_pAxMapControl.ActiveView.Refresh();
}
public void CreateRasterFromPoints(IMap pMap, IFeatureLayer pp, String Path, String Name, String Field)
{
//1.将Shape文件读取成FeatureClass
//2.根据FeatureClass生成IFeatureClassDescriptor
//3.创建IRasterRaduis 对象
//设置Cell
//4.插值并生成表面
object obj = null;
IWorkspaceFactory pShapSpace;
pShapSpace = new ShapefileWorkspaceFactory();
IWorkspace pW;
pW = pShapSpace.OpenFromFile(Path, 0);
IFeatureWorkspace pFeatureWork;
pFeatureWork = pW as IFeatureWorkspace;
IFeatureClass pFeatureClass = pFeatureWork.OpenFeatureClass("Name");
IGeoDataset Geo = pFeatureClass as IGeoDataset;
object extend = Geo.Extent;
object o = null;
IFeatureClassDescriptor pFeatureClassDes = new FeatureClassDescriptorClass();
pFeatureClassDes.Create(pFeatureClass, null, Field);
IRasterRadius pRasterrad = new RasterRadiusClass();
pRasterrad.SetVariable(10, ref obj);
object dCell = 0.5;//可以根据不同的点图层进行设置
IInterpolationOp Pinterpla = new RasterInterpolationOpClass();
IRasterAnalysisEnvironment pRasterAnaEn = Pinterpla as IRasterAnalysisEnvironment;
pRasterAnaEn.SetCellSize(esriRasterEnvSettingEnum.esriRasterEnvValue, ref dCell);
pRasterAnaEn.SetExtent(esriRasterEnvSettingEnum.esriRasterEnvValue, ref extend, ref o);
IGeoDataset pGRaster;
object hh = 3;
pGRaster = Pinterpla.IDW((IGeoDataset)pFeatureClassDes, 2, pRasterrad, ref hh);
ISurfaceOp pSurF;
pSurF = new RasterSurfaceOpClass();
IGeoDataset pCour;
object o1 = 0;
pCour = pSurF.Contour(pGRaster, 5, ref o1);
IFeatureLayer pLa;
pLa = new FeatureLayerClass();
IFeatureClass pClass = pCour as IFeatureClass;
pLa.FeatureClass = pClass;
pLa.Name = pClass.AliasName;
pMap.AddLayer(pLa as ILayer);
}
private void btnGO_Click(object sender, EventArgs e)
{
IFeatureClass pInPointFClass; //获得输入点特征数据类
IFeatureClass pLineBarrierFClass; //获得输入的线障碍类
String fileName;
String rasterPath;
String shpFile;
int startX, endX;
//选择要进行分析的字段
if (bDataPath == true)
{
fileName = comboBoxInPoint.Text;
String shpDir = fileName.Substring(0, fileName.LastIndexOf("\\"));
startX = fileName.LastIndexOf("\\");
endX = fileName.Length;
shpFile = fileName.Substring(startX + 1, endX - startX - 1);
IWorkspaceFactory pWorkspaceFactory;
pWorkspaceFactory = new ShapefileWorkspaceFactory();
IFeatureWorkspace pFWS;
pFWS = (IFeatureWorkspace)pWorkspaceFactory.OpenFromFile(shpDir, 0);
pInPointFClass = pFWS.OpenFeatureClass(shpFile);
}
else
{
pInPointFClass = GetFeatureFromMapLyr(comboBoxInPoint.Text);
}
if (bDataLinePath == true && chkBarrier.Checked)
{
fileName = comboBoxBarrier.Text;
String shpDir = fileName.Substring(0, fileName.LastIndexOf("\\"));
startX = fileName.LastIndexOf("\\");
endX = fileName.Length;
shpFile = fileName.Substring(startX + 1, endX - startX - 1);
IWorkspaceFactory pWorkspaceFactory;
pWorkspaceFactory = new ShapefileWorkspaceFactory();
IFeatureWorkspace pFWS;
pFWS = (IFeatureWorkspace)pWorkspaceFactory.OpenFromFile(shpDir, 0);
pLineBarrierFClass = pFWS.OpenFeatureClass(shpFile);
}
else if (chkBarrier.Checked)
{
pLineBarrierFClass = GetFeatureFromMapLyr(comboBoxBarrier.Text);
}
IFeatureLayer pFeatLayer = new FeatureLayerClass();
pFeatLayer.FeatureClass = pInPointFClass;
rasterPath = txtOutputRasterPath.Text;
//查询过滤器
//'FeatureClassDescriptor
//这个对象主要用于提供访问控制FeatureClass descriptor的成员；例如，定义FeatureClass的那个属性作为分析操作。
IFeatureClassDescriptor pFeatClsDes = new FeatureClassDescriptorClass();
if (comboBoxZValueField.Text != "无")
{
pFeatClsDes.Create(pInPointFClass, null, comboBoxZValueField.Text);
}
else
{
pFeatClsDes.Create(pInPointFClass, null, "");
}
try
{
IInterpolationOp pInterpolationOp = new RasterInterpolationOpClass();
String sCellSize = txtCellSize.Text;
String sPower = txtWeightValue.Text;
if (Convert.ToDouble(sCellSize) <= 0 || sPower == "")
{
MessageBox.Show("还没输入权重值或栅格单元！请输入后在进行插值。", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
return;
}
double dCellSize = Convert.ToDouble(sCellSize);
double dPower = Convert.ToDouble(sPower);
IRasterRadius pRsRadius = new RasterRadiusClass();
if (comboBoxSearchRadius.Text == "变化")
{
String sPointNums = txtPointNumbers.Text;
if (sPointNums != "")
{
int iPointNums = Convert.ToInt32(sPointNums);
if (txtDisMaxValue.Text != "")
{
double maxDis = Convert.ToDouble(txtDisMaxValue.Text);
object objMaxDis = maxDis as object;
pRsRadius.SetVariable(iPointNums, ref objMaxDis);
}
else
{
object objMaxDis = null;
pRsRadius.SetVariable(iPointNums, ref objMaxDis);
}
}
else
{
MessageBox.Show("还没输入点的数目！请输入后在进行插值。", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
return;
}
}
else
{
String sDistance = txtDisValue.Text;
if (sDistance != "")
{
double dDistance = Convert.ToDouble(sDistance);
if (txtMaxPointNums.Text != "")
{
double maxPointNums = Convert.ToDouble(txtMaxPointNums.Text);
object objMinPointNums = maxPointNums as object;
pRsRadius.SetFixed(dDistance, ref objMinPointNums);
}
else
{
object objMinPointNums = null;
pRsRadius.SetFixed(dDistance, ref objMinPointNums);
}
}
else
{
MessageBox.Show("还没输入距离的值！请输入后在进行插值。", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
return;
}
}
pInterpolationOp = SetRasterInterpolationAnalysisEnv(rasterPath, dCellSize, pFeatLayer);
object objLineBarrier = null;
if (chkBarrier.Checked == true)
{
objLineBarrier = comboBoxBarrier;
}
else
{
objLineBarrier = Type.Missing;
}
IRaster pOutRaster;
pOutRaster = (IRaster)pInterpolationOp.IDW((IGeoDataset)pFeatClsDes, dPower, pRsRadius, ref objLineBarrier);
//着色
IRasterLayer pRasterLayer = new RasterLayerClass();
pRasterLayer.Name = "反距离栅格";
ConvertRasterToRsDataset(rasterPath, ref pOutRaster, "反距离栅格");
pRasterLayer = SetRsLayerClassifiedColor(pOutRaster);
frm.mainMapControl.AddLayer(pRasterLayer, 0);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
private void btnGO_Click(object sender, EventArgs e)
{
IFeatureClass pInPointFClass = null;//������������������
IFeatureClass pLineBarrierFClass = null;//�����������ϰ���
IWorkspace pWorkspace;
string fileName;
string rasterPath;
string shpFile;
int startX, endX;
string sFieldName;//ѡ��Ҫ���з������ֶ�
if (bDataPath == true)
{
fileName = comboBoxInPoint.Text;
string shpDir = fileName.Substring(0, fileName.LastIndexOf("\\"));
startX = fileName.LastIndexOf("\\");
endX = fileName.Length;
shpFile = fileName.Substring(startX + 1, endX - startX - 1);
pInPointFClass = Utility.OpenFeatureClassFromShapefile(shpDir, shpFile);
}
else
{
pInPointFClass = GetFeatureFromMapLyr(comboBoxInPoint.Text);
}
if (bDataLinePath == true)
{
fileName = comboBoxBarrier.Text;
string shpDir = fileName.Substring(0, fileName.LastIndexOf("\\"));
startX = fileName.LastIndexOf("\\");
endX = fileName.Length;
shpFile = fileName.Substring(startX + 1, endX - startX - 1);
pLineBarrierFClass = Utility.OpenFeatureClassFromShapefile(shpDir, shpFile);
}
else
{
pLineBarrierFClass = GetFeatureFromMapLyr(comboBoxBarrier.Text);
}
IFeatureLayer pFeatLayer = new FeatureLayerClass();
pFeatLayer.FeatureClass = pInPointFClass;
rasterPath = txtOutputRasterPath.Text;
IFeatureClassDescriptor pFeatClsDes = new FeatureClassDescriptorClass();
if (comboBoxZValueField.Text != "��")
pFeatClsDes.Create(pInPointFClass, null, comboBoxZValueField.Text);
else
pFeatClsDes.Create(pInPointFClass, null, "");
try
{
IInterpolationOp pInterpolationOp = new RasterInterpolationOpClass();
string sCellSize = txtCellSize.Text;
double dCellSize = Convert.ToDouble(sCellSize);
IRasterRadius pRsRadius = new RasterRadiusClass();
string sPower=txtWeightValue.Text;
double dPower=Convert.ToDouble(sPower);
if(comboBoxSearchRadius.Text == "�仯")
{
string sPointNums=txtPointNumbers.Text;
int iPointNums=Convert.ToInt32(sPointNums);
double maxDis=Convert.ToDouble(txtDisMaxValue.Text);
object objMaxDis=maxDis;
pRsRadius.SetVariable(iPointNums,ref objMaxDis);
}
else
{
string sDistance=txtDisValue.Text;
double dDistance=Convert.ToDouble(sDistance);
double maxPointNums=Convert.ToDouble(txtMaxPointNums.Text);
object objMinPointNums=maxPointNums;
pRsRadius.SetFixed(dDistance,ref objMinPointNums);
}
pInterpolationOp = Utility.SetRasterInterpolationAnalysisEnv(rasterPath, dCellSize, pFeatLayer);
object objLineBarrier=null;
if (chkBarrier.Checked == true)
{
objLineBarrier=comboBoxBarrier;
}
else
{
objLineBarrier = Type.Missing;
}
IRaster pOutRaster = null;
pOutRaster = pInterpolationOp.IDW(pFeatClsDes as IGeoDataset, dPower, pRsRadius, ref objLineBarrier) as IRaster;
//��ɫ
IRasterLayer pRasterLayer = new RasterLayerClass();
pRasterLayer.Name = "������դ��";
Utility.ConvertRasterToRsDataset(rasterPath, pOutRaster, "������դ��");
pRasterLayer = Utility.SetRsLayerClassifiedColor(pOutRaster);
pMainFrm.getMapControl().AddLayer(pRasterLayer, 0);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
private void btnGO_Click(object sender, EventArgs e)
{
IFeatureClass pInPointFClass = null; //获得输入点特征数据类
IFeatureClass pLineBarrierFClass = null; //获得输入的线障碍类
IWorkspace pWorkspace;
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 = comboBoxInPoint.Text;
string shpDir = fileName.Substring(0, fileName.LastIndexOf("\\"));
startX = fileName.LastIndexOf("\\");
endX = fileName.Length;
shpFile = fileName.Substring(startX + 1, endX - startX - 1);
pInPointFClass = Utility.OpenFeatureClassFromShapefile(shpDir, shpFile);
}
else
{
pInPointFClass = GetFeatureFromMapLyr(comboBoxInPoint.Text);
}
if (bDataLinePath == true)
{
fileName = comboBoxBarrier.Text;
string shpDir = fileName.Substring(0, fileName.LastIndexOf("\\"));
startX = fileName.LastIndexOf("\\");
endX = fileName.Length;
shpFile = fileName.Substring(startX + 1, endX - startX - 1);
pLineBarrierFClass = Utility.OpenFeatureClassFromShapefile(shpDir, shpFile);
}
else
{
pLineBarrierFClass = GetFeatureFromMapLyr(comboBoxBarrier.Text);
}
IFeatureLayer pFeatLayer = new FeatureLayerClass();
pFeatLayer.FeatureClass = pInPointFClass;
rasterPath = txtOutputRasterPath.Text;
IFeatureClassDescriptor pFeatClsDes = new FeatureClassDescriptorClass();
if (comboBoxZValueField.Text != "无")
{
pFeatClsDes.Create(pInPointFClass, null, comboBoxZValueField.Text);
}
else
{
pFeatClsDes.Create(pInPointFClass, null, "");
}
try
{
IInterpolationOp pInterpolationOp = new RasterInterpolationOpClass();
string sCellSize = txtCellSize.Text;
double dCellSize = Convert.ToDouble(sCellSize);
IRasterRadius pRsRadius = new RasterRadiusClass();
string sPower = txtWeightValue.Text;
double dPower = Convert.ToDouble(sPower);
if (comboBoxSearchRadius.Text == "变化")
{
string sPointNums = txtPointNumbers.Text;
int iPointNums = Convert.ToInt32(sPointNums);
double maxDis = Convert.ToDouble(txtDisMaxValue.Text);
object objMaxDis = maxDis;
pRsRadius.SetVariable(iPointNums, ref objMaxDis);
}
else
{
string sDistance = txtDisValue.Text;
double dDistance = Convert.ToDouble(sDistance);
double maxPointNums = Convert.ToDouble(txtMaxPointNums.Text);
object objMinPointNums = maxPointNums;
pRsRadius.SetFixed(dDistance, ref objMinPointNums);
}
pInterpolationOp = Utility.SetRasterInterpolationAnalysisEnv(rasterPath, dCellSize, pFeatLayer);
object objLineBarrier = null;
if (chkBarrier.Checked == true)
{
objLineBarrier = comboBoxBarrier;
}
else
{
objLineBarrier = Type.Missing;
}
IRaster pOutRaster = null;
pOutRaster = pInterpolationOp.IDW(pFeatClsDes as IGeoDataset, dPower, pRsRadius, ref objLineBarrier) as IRaster;
//着色
IRasterLayer pRasterLayer = new RasterLayerClass();
pRasterLayer.Name = "反距离栅格";
Utility.ConvertRasterToRsDataset(rasterPath, pOutRaster, "反距离栅格");
pRasterLayer = Utility.SetRsLayerClassifiedColor(pOutRaster);
pMainFrm.getMapControl().AddLayer(pRasterLayer, 0);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
private void iDW空间差值ToolStripMenuItem_Click(object sender, EventArgs e)
{
//用反距离IDW插值生成的栅格图像
IInterpolationOp pInterpolationOp = new RasterInterpolationOpClass();
// 输入点图层
IFeatureClass pFeatureClass;
IFeatureLayer pFeaturelayer;
int indexLayer = Convert.ToInt32(Interaction.InputBox("请输入IDW空间插值点图层下标", "字符串", "", 500, 250));
pFeaturelayer = this.axMapControl1.Map.get_Layer(indexLayer) as IFeatureLayer;
pFeatureClass = pFeaturelayer.FeatureClass;
// Define the search radius
IRasterRadius pRadius = new RasterRadiusClass();
object maxDistance = Type.Missing;
pRadius.SetVariable(12, ref maxDistance);
//Create FeatureClassDescriptor using a value field
IFeatureClassDescriptor pFCDescriptor = new FeatureClassDescriptorClass();
string zValue = Interaction.InputBox("请输入特征字段(yelvsuA/FYyelvsuA)", "字符串", "", 500, 250);
pFCDescriptor.Create(pFeatureClass, null, zValue);
//set { cellsize for output raster in the environment
object dCellSize = 113.039027413432;
IRasterAnalysisEnvironment pEnv = new RasterAnalysis();
pEnv = pInterpolationOp as IRasterAnalysisEnvironment;
pEnv.SetCellSize(esriRasterEnvSettingEnum.esriRasterEnvValue, ref dCellSize);
object objectbarrier = Type.Missing;
//Perform the interpolation
IGeoDataset rasDataset = pInterpolationOp.IDW((IGeoDataset)pFCDescriptor, 2, pRadius, ref objectbarrier);
IRaster pOutRaster = rasDataset as IRaster;
//Add output into ArcMap as a raster layer
IRasterLayer pOutRasLayer = new RasterLayerClass();
pOutRasLayer.CreateFromRaster(pOutRaster);
this.axMapControl1.AddLayer(pOutRasLayer, 0);
axMapControl1.ActiveView.Refresh();
DialogResult dr = MessageBox.Show("插值成功,请选择是否进行分级渲染", "分级渲染选择",
MessageBoxButtons.OKCancel, MessageBoxIcon.Information);
if (dr == DialogResult.OK)
{
//用户选择确认的操作（分级渲染）
IRasterLayer pRasterLayer = null;
for (int i = 0; i < axMapControl1.LayerCount; i++)
{
if (axMapControl1.get_Layer(i) is IRasterLayer)
{
pRasterLayer = axMapControl1.get_Layer(i) as IRasterLayer;
}
}
if (pRasterLayer == null)
{
MessageBox.Show("当前图层不存在栅格图层");
return;
}
int number = Convert.ToInt32(Interaction.InputBox("请输入栅格影像分类数量(默认为10)", "字符串", "", 500, 250));
if (number == 0)
{
number = 10;
}
funColorForRaster_Classify(pRasterLayer, number);
axMapControl1.ActiveView.Refresh();
}
else if (dr == DialogResult.Cancel)
{
//用户选择取消的操作
return;
}
}
public void CreateRasterFromPoints(IMap pMap, IFeatureLayer pp,String Path, String Name, String Field)
{
//1.��Shape�ļ���ȡ��FeatureClass
//2.����FeatureClass����IFeatureClassDescriptor
//3.����IRasterRaduis ����
//����Cell
//4.��ֵ�����ɱ���
object obj = null;
IWorkspaceFactory pShapSpace;
pShapSpace = new ShapefileWorkspaceFactory();
IWorkspace pW;
pW = pShapSpace.OpenFromFile(Path, 0);
IFeatureWorkspace pFeatureWork;
pFeatureWork = pW as IFeatureWorkspace;
IFeatureClass pFeatureClass = pFeatureWork.OpenFeatureClass("Name");
IGeoDataset Geo = pFeatureClass as IGeoDataset;
object extend = Geo.Extent;
object o = null;
IFeatureClassDescriptor pFeatureClassDes = new FeatureClassDescriptorClass();
pFeatureClassDes.Create(pFeatureClass, null, Field);
IRasterRadius pRasterrad = new RasterRadiusClass();
pRasterrad.SetVariable(10, ref obj);
object dCell = 0.5;//���Ը��ݲ�ͬ�ĵ�ͼ���������
IInterpolationOp Pinterpla = new RasterInterpolationOpClass();
IRasterAnalysisEnvironment pRasterAnaEn = Pinterpla as IRasterAnalysisEnvironment;
pRasterAnaEn.SetCellSize(esriRasterEnvSettingEnum.esriRasterEnvValue, ref dCell);
pRasterAnaEn.SetExtent(esriRasterEnvSettingEnum.esriRasterEnvValue, ref extend, ref o);
IGeoDataset pGRaster;
object hh = 3;
pGRaster = Pinterpla.IDW((IGeoDataset)pFeatureClassDes , 2, pRasterrad, ref hh);
ISurfaceOp pSurF;
pSurF = new RasterSurfaceOpClass();
IGeoDataset pCour;
object o1 = 0;
pCour = pSurF.Contour(pGRaster, 5, ref o1);
IFeatureLayer pLa;
pLa = new FeatureLayerClass();
IFeatureClass pClass = pCour as IFeatureClass;
pLa.FeatureClass = pClass;
pLa.Name = pClass.AliasName;
pMap.AddLayer(pLa as ILayer);
}
private IGeoDataset GetAfterGeo(IFeatureClass fc, IGeometry geo)
{
try
{
WaitForm.SetCaption("正在计算填挖表面...");
ISpatialFilter pSpatialFilter = new SpatialFilter();
pSpatialFilter.Geometry = geo;
pSpatialFilter.SpatialRel = esriSpatialRelEnum.esriSpatialRelContains;
int count = fc.FeatureCount(pSpatialFilter);
if (count == 0)
{
return(null);
}
IFeatureCursor cursor = fc.Search(pSpatialFilter, true);
IFeature feature;
FacilityClass fac = FacilityClassManager.Instance.GetFacilityClassByName("GCD");
DFDataConfig.Class.FieldInfo fi = fac.GetFieldInfoBySystemName("Height");
if (fi == null)
{
return(null);
}
while ((feature = cursor.NextFeature()) != null)
{
int index = feature.Fields.FindField(fi.Name);
if (index == -1)
{
continue;
}
feature.set_Value(index, h);
feature.Store();
}
IInterpolationOp3 pInterpolationOp = new RasterInterpolationOpClass();
//IFields fields = fc.Fields;
//int index1 = fields.FindField("HEIGHT");
//if (index1 == -1) return null;
//IField field = fields.get_Field(index1);
IFeatureClassDescriptor pFcd = new FeatureClassDescriptorClass();
pFcd.Create(fc, pSpatialFilter, fi.Name);
//定义搜索半径
IRasterRadius pRadius = new RasterRadiusClass();
object Missing = Type.Missing;
pRadius.SetVariable(12, ref Missing);
//设置栅格图像的单位大小
object cellSizeProvider = 5;
IRasterAnalysisEnvironment pEnv = pInterpolationOp as IRasterAnalysisEnvironment;
pEnv.SetCellSize(esriRasterEnvSettingEnum.esriRasterEnvValue, ref cellSizeProvider);
IGeoDataset outGeoDataset = pInterpolationOp.IDW(pFcd as IGeoDataset, 2, pRadius, ref Missing);
return(outGeoDataset);
}
catch (System.Exception ex)
{
return(null);
WaitForm.Stop();
}
}
private void button_IDW_TIME_Click(object sender, EventArgs e)
{
object obj = null;
ILayer pLayer = new FeatureLayerClass();
IFeatureClass featureClass = GetFeatureClass(@"D:\a_gis工程设计实践课\china\墓穴地shp\grave.shp");
IGeoDataset geo = featureClass as IGeoDataset;
object extend = geo.Extent;
object o = null;
IFeatureClassDescriptor feades = new FeatureClassDescriptorClass();
feades.Create(featureClass, null, "time_inter");
IRasterRadius rasterrad = new RasterRadiusClass();
rasterrad.SetVariable(12, ref obj);
object dCell = 0.014800000;//可以根据不同的点图层进行设置
IInterpolationOp interpla = new RasterInterpolationOpClass();
IRasterAnalysisEnvironment rasanaenv = interpla as IRasterAnalysisEnvironment;
rasanaenv.SetCellSize(esriRasterEnvSettingEnum.esriRasterEnvValue, ref dCell);
rasanaenv.SetExtent(esriRasterEnvSettingEnum.esriRasterEnvValue, ref extend, ref o);
IGeoDataset g_GeoDS_Raster = interpla.IDW((IGeoDataset)feades, 2, rasterrad, ref obj);
IRaster pOutRsater = (IRaster)g_GeoDS_Raster;
IRasterLayer pOutRasterlayer = new RasterLayerClass();
pOutRasterlayer.CreateFromRaster(pOutRsater);
pOutRasterlayer.Name = "时间久远程度";
PixelValue2 = Class_GetPixelValue(pOutRasterlayer);
IRasterClassifyColorRampRenderer pRClassRend = new RasterClassifyColorRampRendererClass();
IRasterRenderer pRRend = pRClassRend as IRasterRenderer;
IRaster pRaster = pOutRasterlayer.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 RgbColorClass();
pFromColor.Red = 135;//天蓝色
pFromColor.Green = 206;
pFromColor.Blue = 235;
IRgbColor pToColor = new RgbColorClass();
pToColor.Red = 124;//草坪绿
pToColor.Green = 252;
pToColor.Blue = 0;
IAlgorithmicColorRamp colorRamp = new AlgorithmicColorRampClass();
colorRamp.Size = 10;
colorRamp.FromColor = pFromColor;
colorRamp.ToColor = pToColor;
bool createColorRamp;
colorRamp.CreateRamp(out createColorRamp);
IFillSymbol fillSymbol = new SimpleFillSymbolClass();
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"));
}
pOutRasterlayer.Renderer = pRRend;
this.axMapControl1.AddLayer(pOutRasterlayer);
//两种方法的结合后
}
private void btn_2e_Click(object sender, EventArgs e)
{
ILayer pLayer = new FeatureLayerClass();
IFeatureClass featureClass = GetFeatureClass(@"D:\a_gis工程设计实践课\china\墓穴地shp\grave.shp");
IGeoDataset geo = featureClass as IGeoDataset;
object extend = geo.Extent;
object o = null;
IFeatureClassDescriptor feades = new FeatureClassDescriptorClass();
feades.Create(featureClass, null, "area");
IRasterRadius rasterrad = new RasterRadiusClass();
rasterrad.SetVariable(12, ref o);
object dCell = 0.014800000;//可以根据不同的点图层进行设置
IInterpolationOp interpla = new RasterInterpolationOpClass();
IRasterAnalysisEnvironment rasanaenv = interpla as IRasterAnalysisEnvironment;
rasanaenv.SetCellSize(esriRasterEnvSettingEnum.esriRasterEnvValue, ref dCell);
rasanaenv.SetExtent(esriRasterEnvSettingEnum.esriRasterEnvValue, ref extend, ref o);
IGeoDataset g_GeoDS_Raster = interpla.IDW((IGeoDataset)feades, 2, rasterrad, ref o);
IRaster pOutRsater = (IRaster)g_GeoDS_Raster;
IRasterLayer pOutRasterlayer = new RasterLayerClass();
pOutRasterlayer.CreateFromRaster(pOutRsater);
pOutRasterlayer.Name = "两个因素都考虑";
//IRaster raster = pOutRasterlayer.Raster;
IRaster2 raster2 = (IRaster2)pOutRsater;
// 指定像素块大小
IPnt pntBlock = new PntClass();
pntBlock.X = 1280;
pntBlock.Y = 1280;
//创建一个光标以给定像素块大小
//定义RasterCursor初始化，参数设为null，内部自动设置PixelBlock大小
//IRasterCursor pRasterCursor = pRaster2.CreateCursorEx(null);
IRasterCursor rasterCursor = raster2.CreateCursorEx(null);
//控制像素块级别的编辑操作
IRasterEdit rasterEdit = raster2 as IRasterEdit;
if (rasterEdit.CanEdit())
{
//得到一段光栅带
IRasterBandCollection bandCollection = (IRasterBandCollection)pOutRsater;
System.Array pixels;
IPnt pnt = null;
object value;
int bandCount = bandCollection.Count;
//创建像素块
IPixelBlock3 pixelBlock3 = null;
int blockWidth = 0;
int blockHeight = 0;
double temp = 0;
do
{
pixelBlock3 = rasterCursor.PixelBlock as IPixelBlock3;
blockWidth = pixelBlock3.Width;
blockHeight = pixelBlock3.Height;
for (int k = 0; k < bandCount; k++)
{
//指定平面的像素的数组
pixels = (System.Array)pixelBlock3.get_PixelData(k);
for (int i = 0; i < blockWidth; i++)
{
for (int j = 0; j < blockHeight; j++)
{
//value = pixels.GetValue(i, j);
////if (Convert.ToInt32(value) == 0)
//{
//设置像素的颜色值
temp = PixelValue1[i, j] + PixelValue2[i, j];
pixels.SetValue((int)temp, i, j);
//}
}
}
pixelBlock3.set_PixelData(k, pixels);
}
pnt = rasterCursor.TopLeft;
rasterEdit.Write(pnt, (IPixelBlock)pixelBlock3);
}while (rasterCursor.Next());
System.Runtime.InteropServices.Marshal.ReleaseComObject(rasterEdit);
//渲染
IRasterClassifyColorRampRenderer pRClassRend = new RasterClassifyColorRampRendererClass();
IRasterRenderer pRRend = pRClassRend as IRasterRenderer;
IRaster pRaster = pOutRasterlayer.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 RgbColorClass();
pFromColor.Red = 135;//天蓝色
pFromColor.Green = 206;
pFromColor.Blue = 235;
IRgbColor pToColor = new RgbColorClass();
pToColor.Red = 124;//草坪绿
pToColor.Green = 252;
pToColor.Blue = 0;
IAlgorithmicColorRamp colorRamp = new AlgorithmicColorRampClass();
colorRamp.Size = 10;
colorRamp.FromColor = pFromColor;
colorRamp.ToColor = pToColor;
bool createColorRamp;
colorRamp.CreateRamp(out createColorRamp);
IFillSymbol fillSymbol = new SimpleFillSymbolClass();
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"));
}
pOutRasterlayer.Renderer = pRRend;
this.axMapControl1.AddLayer(pOutRasterlayer);
}
}
private void button2_Click(object sender, EventArgs e)
{
//通过IDW插值生成栅格图层
#region
label2.Text = "正在进行IDW插值";
IFeatureLayer pFeatureLayer_point = axMapControl1.Map.Layer[0] as IFeatureLayer;//获取点图层
IRasterRadius pRadius = new RasterRadiusClass();
object missing = Type.Missing;
pRadius.SetVariable(12, ref missing);
IFeatureClassDescriptor pFCDescriptor = new FeatureClassDescriptorClass();
pFCDescriptor.Create(pFeatureLayer_point.FeatureClass, null, "高程");
object cellSizeProvider = 185.244192;
IInterpolationOp pInterpolationOp = new RasterInterpolationOpClass();
IRasterAnalysisEnvironment pEnv = pInterpolationOp as IRasterAnalysisEnvironment;
pEnv.SetCellSize(esriRasterEnvSettingEnum.esriRasterEnvValue, ref cellSizeProvider);
IRaster pOutRaster;
try
{
pOutRaster = pInterpolationOp.IDW(pFCDescriptor as IGeoDataset, 2, pRadius, ref missing) as IRaster;
}
catch
{
pOutRaster = pInterpolationOp.IDW(pFCDescriptor as IGeoDataset, 2, pRadius, ref missing) as IRaster;
}
//Add output into ArcMap as a raster layer
RasterLayer pOutRasLayer = new RasterLayerClass();
pOutRasLayer.CreateFromRaster(pOutRaster);
pOutRasLayer.Name = "栅格";
axMapControl1.Map.AddLayer(pOutRasLayer);
#endregion
//提取等值线
#region
label2.Text = "正在生成等值线...";
IGeoDataset pGeoDataSet = pOutRaster as IGeoDataset;
IWorkspaceFactory pWorkspaceFactory1 = new ShapefileWorkspaceFactory();
string file_path = System.IO.Path.GetDirectoryName(database_path);
IWorkspace pShpWorkspace = pWorkspaceFactory1.OpenFromFile(file_path, 0);
ISurfaceOp2 pSurfaceOp2 = new RasterSurfaceOpClass();
IRasterAnalysisEnvironment pRasterAnalysisEnvironment = pSurfaceOp2 as IRasterAnalysisEnvironment;
pRasterAnalysisEnvironment.Reset();
pRasterAnalysisEnvironment.SetCellSize(esriRasterEnvSettingEnum.esriRasterEnvValue, ref cellSizeProvider);
pRasterAnalysisEnvironment.OutWorkspace = pShpWorkspace;
double dInterval = 0.8; //间距
IGeoDataset pOutputDataSet = pSurfaceOp2.Contour(pGeoDataSet, dInterval, ref missing, ref missing);
IFeatureClass pFeatureClass1 = pOutputDataSet as IFeatureClass;
IFeatureLayer pFeatureLayer = new FeatureLayerClass();
pFeatureLayer.FeatureClass = pFeatureClass1;
IGeoFeatureLayer pGeoFeatureLayer = pFeatureLayer as IGeoFeatureLayer;
pGeoFeatureLayer.DisplayAnnotation = true;
pGeoFeatureLayer.DisplayField = "Contour";
pGeoFeatureLayer.Name = "高程等值线";
axMapControl1.Map.AddLayer(pGeoFeatureLayer);
label2.Text = "完毕";
#endregion
}
public IGeoDataset GetIDW(IFeatureClass _pFeatureClass, string _pFieldName, double _pDistance, double _pCell, int _pPower)
{
IGeoDataset Geo = _pFeatureClass as IGeoDataset;
object pExtent = Geo.Extent;
object o = Type.Missing;
IFeatureClassDescriptor pFeatureClassDes = new FeatureClassDescriptorClass();
pFeatureClassDes.Create(_pFeatureClass, null, _pFieldName);
IInterpolationOp pInterOp = new RasterInterpolationOpClass();
IRasterAnalysisEnvironment pRasterAEnv = pInterOp as IRasterAnalysisEnvironment;
// pRasterAEnv.Mask = Geo;
pRasterAEnv.SetExtent(esriRasterEnvSettingEnum.esriRasterEnvValue, ref pExtent, ref o);
object pCellSize = _pCell;//���Ը��ݲ�ͬ�ĵ�ͼ���������
pRasterAEnv.SetCellSize(esriRasterEnvSettingEnum.esriRasterEnvValue, ref pCellSize);
IRasterRadius pRasterrad = new RasterRadiusClass();
object obj = Type.Missing;
// pRasterrad.SetFixed(_pDistance, ref obj);
pRasterrad.SetVariable(12);
object pBar = Type.Missing;
IGeoDataset pGeoIDW = pInterOp.IDW(pFeatureClassDes as IGeoDataset, _pPower, pRasterrad, ref pBar);
return pGeoIDW;
}