/// <summary>
/// 计算DEM坡向
/// </summary>
/// <param name="rasterLayer">输入DEM图层</param>
/// <param name="outputFullPath">输出坡度图路径，类型为IMAGE，文件名为img</param>
public void CreateRasterAspect(ILayer rasterLayer, string outputFullPath)
{
if (File.Exists(outputFullPath))
{
MessageBox.Show(outputFullPath + "已经存在，请重命名");
return;
}
IRasterLayer rasterLyr = rasterLayer as IRasterLayer;
IRaster raster = rasterLyr.Raster;
RasterSurfaceOpClass rasterOpCls = new RasterSurfaceOpClass();
IGeoDataset geoDataset = raster as IGeoDataset;
IGeoDataset outGeodataset = rasterOpCls.Aspect(geoDataset);
IRaster pRaster = outGeodataset as IRaster;
FileInfo fi = new FileInfo(outputFullPath);
string fileDir = fi.Directory.FullName;
string name = fi.Name;
if (!Directory.Exists(fileDir))
{
Directory.CreateDirectory(fileDir);
}
IWorkspaceFactory pWSF = new RasterWorkspaceFactoryClass();
IWorkspace pWS = pWSF.OpenFromFile(fileDir, 0);
ISaveAs pSaveAs = pRaster as ISaveAs;
pSaveAs.SaveAs(name, pWS, "IMAGINE Image");
IRasterLayer rasterLyr2 = new RasterLayerClass();
rasterLyr2.CreateFromRaster(pRaster);
rasterLyr2.Name = name;
m_mapControl.Map.AddLayer(rasterLyr2 as ILayer);
}
public IFeatureLayer CreateRasterContour(IRaster raster)
{
try
{
ISurfaceOp pSurface = new RasterSurfaceOpClass();
object BaseHeight = Type.Missing;
IGeoDataset pGeoDataset = raster as IGeoDataset;
double interval = Convert.ToDouble(txtContour.Text);
if (interval <= 0)
{
MessageBox.Show("请指定大于0的正数！", "信息", MessageBoxButtons.OK, MessageBoxIcon.Information);
return(null);
}
IGeoDataset pContour = pSurface.Contour(pGeoDataset, interval, ref BaseHeight);
IFeatureLayer pFContourLayer = new FeatureLayerClass();
pFContourLayer.FeatureClass = pContour as IFeatureClass;
// IFeatureDataConverter pFeatureDataConvert = new FeatureDataConverter();
OperateConvertToShape(m_ResultPath, pFContourLayer.FeatureClass);
return(pFContourLayer);
}
catch (SystemException e)
{
MessageBox.Show(e.Message);
return(null);
}
}
public IRaster CreateRasterHillShade(IRaster raster)
{
try
{
RasterSurfaceOpClass class2 = new RasterSurfaceOpClass();
IGeoDataset geoDataset = raster as IGeoDataset;
double zFactor = Convert.ToDouble(textBoxX3.Text);
if (zFactor <= 0)
{
MessageBox.Show("请指定大于0的正数！", "信息", MessageBoxButtons.OK, MessageBoxIcon.Information);
return(null);
}
object o = zFactor;
double azimuth = slider2.Value;
double altitude = slider1.Value;
bool inModelShadows = false;
if (cmbRenderType.SelectedIndex == 1)
{
inModelShadows = true;
}
IGeoDataset pGeoDataset = class2.HillShade(geoDataset, azimuth, altitude, inModelShadows, ref o);
IRaster pRaster = (IRaster)pGeoDataset;
ISaveAs2 pSaveAs = pRaster as ISaveAs2;
IDataset pDataset = pSaveAs.SaveAs(m_ResultPath + ".tif", null, "TIFF");
System.Runtime.InteropServices.Marshal.ReleaseComObject(pDataset);
MessageBox.Show("山体阴影计算完毕！", "信息", MessageBoxButtons.OK, MessageBoxIcon.Information);
return(pRaster);
}
catch (SystemException e)
{
MessageBox.Show(e.Message, "提示", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
return(null);
}
}
/// <summary>
/// 计算DEM坡度
/// </summary>
/// <param name="rasterLayer">输入DEM图层</param>
/// <param name="outputFullPath">输出坡度图路径，类型为IMAGE，文件名为img</param>
public void CreateRasterSlope(ILayer rasterLayer, string outputFullPath)
{
if (File.Exists(outputFullPath))
{
MessageBox.Show(outputFullPath + "已经存在，请重命名");
return;
}
IRasterLayer rasterLyr = rasterLayer as IRasterLayer;
IRaster raster = rasterLyr.Raster;
RasterSurfaceOpClass rasterOpCls = new RasterSurfaceOpClass();
object o = 1;
IGeoDataset geoDataset = raster as IGeoDataset;
esriGeoAnalysisSlopeEnum geoType = esriGeoAnalysisSlopeEnum.esriGeoAnalysisSlopeDegrees;
IGeoDataset outGeodataset = rasterOpCls.Slope(geoDataset, geoType, ref o);
IRaster pRaster = outGeodataset as IRaster;
FileInfo fi = new FileInfo(outputFullPath);
string fileDir = fi.Directory.FullName;
string name = fi.Name;
if (!Directory.Exists(fileDir))
Directory.CreateDirectory(fileDir);
IWorkspaceFactory pWSF = new RasterWorkspaceFactoryClass();
IWorkspace pWS = pWSF.OpenFromFile(fileDir, 0);
ISaveAs pSaveAs = pRaster as ISaveAs;
pSaveAs.SaveAs(name, pWS, "IMAGINE Image");
IRasterLayer rasterLyr2 = new RasterLayerClass();
rasterLyr2.CreateFromRaster(pRaster);
rasterLyr2.Name = name;
m_mapControl.Map.AddLayer(rasterLyr2 as ILayer);
}
private void button2_Click(object sender, EventArgs e)
{
IGeoDataset inGeoDataSet;
IGeoDataset outGeoDataSet;
ISurfaceOp SurfaceOp = new RasterSurfaceOpClass();
ILayer layer = GetLayerByName(comboBox1.SelectedItem.ToString());
IRasterLayer rasterLayer = layer as IRasterLayer;
IRaster raster = rasterLayer.Raster;
inGeoDataSet = raster as IGeoDataset;
outGeoDataSet = SurfaceOp.Aspect(inGeoDataSet);
try
{
IWorkspaceFactory pWKSF = new RasterWorkspaceFactoryClass();
IWorkspace pWorkspace = pWKSF.OpenFromFile(System.IO.Path.GetDirectoryName(textBox1.Text), 0);
ISaveAs pSaveAs = outGeoDataSet as ISaveAs;
pSaveAs.SaveAs(System.IO.Path.GetFileName(textBox1.Text), pWorkspace, "TIFF");
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
}
IRasterLayer pRlayer = new RasterLayer();
pRlayer.CreateFromRaster((IRaster)outGeoDataSet);
pRlayer.Name = System.IO.Path.GetFileName(textBox1.Text);
mainForm.axMapControl1.AddLayer(pRlayer, 0);
}
public IRaster CreateRasterSlope(IRaster raster)
{
try
{
RasterSurfaceOpClass class2 = new RasterSurfaceOpClass();
IGeoDataset geoDataset = raster as IGeoDataset;
double zFactor = Convert.ToDouble(textBoxX3.Text);
if (zFactor <= 0)
{
MessageBox.Show("请指定大于0的正数！", "信息", MessageBoxButtons.OK, MessageBoxIcon.Information);
return(null);
}
//float zFactor = 1;
object o = zFactor;
esriGeoAnalysisSlopeEnum geoType = esriGeoAnalysisSlopeEnum.esriGeoAnalysisSlopeDegrees;
IGeoDataset pGeoDataset = class2.Slope(geoDataset, geoType, ref o);
IRaster pRaster = (IRaster)pGeoDataset;
ISaveAs2 pSaveAs = pRaster as ISaveAs2;
IDataset pDataset = pSaveAs.SaveAs(m_ResultPath + ".tif", null, "TIFF");
//System.Runtime.InteropServices.Marshal.ReleaseComObject(pDataset);
MessageBox.Show("坡度计算完毕！", "信息", MessageBoxButtons.OK, MessageBoxIcon.Information);
return(pRaster);
}
catch (SystemException e)
{
MessageBox.Show(e.Message, "提示", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
return(null);
}
}
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 void btnGO_Click(object sender, EventArgs e)
{
string fileName;
string shpFile;
int startX, endX;
string shpDir;
try
{
if (bDataPath == true)
{
fileName = txtOutputData.Text;
shpDir = fileName.Substring(0, fileName.LastIndexOf("\\"));
startX = fileName.LastIndexOf("\\");
endX = fileName.Length;
shpFile = fileName.Substring(startX + 1, endX - startX - 1);
}
else
{
shpDir = txtOutputData.Text;
shpFile = "х╚ох¤▀";
}
if (m_pRasterLyr != null)
{
double dInterval = Convert.ToDouble(txtConInterval.Text);
double dBaseLine = Convert.ToDouble(txtBaseLine.Text);
object objBaseLine = dBaseLine;
ISurfaceOp pRasterSurfaceOp = new RasterSurfaceOpClass();
IRaster pInRaster = m_pRasterLyr.Raster;
IFeatureClass pOutFClass = pRasterSurfaceOp.Contour(pInRaster as IGeoDataset, dInterval, ref objBaseLine) as IFeatureClass;
//2. QI to IDataset
IDataset pFDS = pOutFClass as IDataset;
//3. Get a shapefile workspace
IWorkspaceFactory pSWF = new ShapefileWorkspaceFactoryClass();
IFeatureWorkspace pFWS = pSWF.OpenFromFile(shpDir, 0) as IFeatureWorkspace;
//4. Copy contour output to a new shapefile
IWorkspace pWS = pFWS as IWorkspace;
if (pWS.Exists() == true)
{
Utility.DelFeatureFile(shpDir, shpFile + ".shp");
}
pFDS.Copy(shpFile, pFWS as IWorkspace);
IFeatureLayer pFeatLyr = new FeatureLayerClass();
pFeatLyr.FeatureClass = pOutFClass;
pFeatLyr.Name = pOutFClass.AliasName;
pFeatLyr.Visible = true;
pMainFrm.getMapControl().AddLayer(pFeatLyr, 0);
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
private void btnGO_Click(object sender, EventArgs e)
{
string strInFileName;
string strOutFileName;
int startX, endX;
string strOutDir;
try
{
if (bDataPath == true)
{
strInFileName = txtOutPath.Text;
strOutDir = strInFileName.Substring(0, strInFileName.LastIndexOf("\\"));
startX = strInFileName.LastIndexOf("\\");
endX = strInFileName.Length;
strOutFileName = strInFileName.Substring(startX + 1, endX - startX - 1);
}
else
{
strOutDir = txtOutPath.Text;
strOutFileName = "aspect";
}
if (File.Exists(strOutDir + "\\" + strOutFileName + ".aux") == true)
{
MessageBox.Show("�ļ�" + strOutFileName + "�Ѿ����ڣ�������������");
return;
}
if (m_pRasterLyr != null)
{
double dCellSize = Convert.ToDouble(txtCellSize.Text);
ISurfaceOp pRasterSurfaceOp = new RasterSurfaceOpClass();
IRaster pInRaster = m_pRasterLyr.Raster;
IRaster pOutRaster = null;
IRasterLayer pRasterLayer = new RasterLayerClass();
IGeoDataset pGeoDs = pRasterSurfaceOp.Aspect(pInRaster as IGeoDataset);
pOutRaster = pGeoDs as IRaster;
IRasterLayer pOutRasterLayer = new RasterLayerClass();
pOutRasterLayer.CreateFromRaster(pOutRaster);
pOutRasterLayer.Name = strOutFileName;
IWorkspaceFactory pWSF = new RasterWorkspaceFactoryClass();
IWorkspace pRWS = pWSF.OpenFromFile(strOutDir, 0);
IRasterBandCollection pRasBandCol = (IRasterBandCollection)pGeoDs;
pRasBandCol.SaveAs(strOutFileName, pRWS, "GRID");//"IMAGINE Image"
pOutRasterLayer = UtilityFunction.SetStretchRenderer(pOutRasterLayer.Raster);
pOutRasterLayer.Name = strOutFileName;
pMap.AddLayer(pOutRasterLayer);
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
private void btnGO_Click(object sender, EventArgs e)
{
string strInFileName;
string strOutFileName;
int startX, endX;
string strOutDir;
try
{
if (bDataPath == true)
{
strInFileName = txtOutPath.Text;
strOutDir = strInFileName.Substring(0, strInFileName.LastIndexOf("\\"));
startX = strInFileName.LastIndexOf("\\");
endX = strInFileName.Length;
strOutFileName = strInFileName.Substring(startX + 1, endX - startX - 1);
}
else
{
strOutDir = txtOutPath.Text;
strOutFileName = "aspect";
}
if (File.Exists(strOutDir + "\\" + strOutFileName + ".aux") == true)
{
MessageBox.Show("文件" + strOutFileName + "已经存在，请重新命名！");
return;
}
if (m_pRasterLyr != null)
{
double dCellSize = Convert.ToDouble(txtCellSize.Text);
ISurfaceOp pRasterSurfaceOp = new RasterSurfaceOpClass();
IRaster pInRaster = m_pRasterLyr.Raster;
IRaster pOutRaster = null;
IRasterLayer pRasterLayer = new RasterLayerClass();
IGeoDataset pGeoDs = pRasterSurfaceOp.Aspect(pInRaster as IGeoDataset);
pOutRaster = pGeoDs as IRaster;
IRasterLayer pOutRasterLayer = new RasterLayerClass();
pOutRasterLayer.CreateFromRaster(pOutRaster);
pOutRasterLayer.Name = strOutFileName;
IWorkspaceFactory pWSF = new RasterWorkspaceFactoryClass();
IWorkspace pRWS = pWSF.OpenFromFile(strOutDir, 0);
IRasterBandCollection pRasBandCol = (IRasterBandCollection)pGeoDs;
pRasBandCol.SaveAs(strOutFileName, pRWS, "GRID");//"IMAGINE Image"
pOutRasterLayer = UtilityFunction.SetStretchRenderer(pOutRasterLayer.Raster);
pOutRasterLayer.Name = strOutFileName;
pMap.AddLayer(pOutRasterLayer);
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
private void btnGO_Click(object sender, EventArgs e)
{
string fileName;
string shpFile;
int startX, endX;
string shpDir;
try
{
if (bDataPath == true)
{
fileName=txtOutputData.Text;
shpDir =fileName.Substring(0, fileName.LastIndexOf("\\"));
startX=fileName.LastIndexOf("\\");
endX=fileName.Length;
shpFile=fileName.Substring(startX+1,endX-startX-1);
}
else
{
shpDir=txtOutputData.Text;
shpFile="��ֵ��";
}
if (m_pRasterLyr != null)
{
double dInterval=Convert.ToDouble(txtConInterval.Text);
double dBaseLine=Convert.ToDouble(txtBaseLine.Text);
object objBaseLine=dBaseLine;
ISurfaceOp pRasterSurfaceOp = new RasterSurfaceOpClass();
IRaster pInRaster = m_pRasterLyr.Raster;
IFeatureClass pOutFClass= pRasterSurfaceOp.Contour(pInRaster as IGeoDataset , dInterval, ref objBaseLine) as IFeatureClass ;
//2. QI to IDataset
IDataset pFDS=pOutFClass as IDataset ;
//3. Get a shapefile workspace
IWorkspaceFactory pSWF=new ShapefileWorkspaceFactoryClass();
IFeatureWorkspace pFWS=pSWF.OpenFromFile(shpDir,0) as IFeatureWorkspace ;
//4. Copy contour output to a new shapefile
IWorkspace pWS = pFWS as IWorkspace;
if (pWS.Exists() == true)
Utility.DelFeatureFile(shpDir, shpFile + ".shp");
pFDS.Copy(shpFile,pFWS as IWorkspace );
IFeatureLayer pFeatLyr = new FeatureLayerClass();
pFeatLyr.FeatureClass = pOutFClass;
pFeatLyr.Name = pOutFClass.AliasName;
pFeatLyr.Visible = true;
pMainFrm.getMapControl().AddLayer(pFeatLyr, 0);
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
private void SurfaceProcess(IGeoDataset beforeGeo, IGeoDataset afterGeo)
{
try
{
IRasterSurface rasterSurface = new RasterSurfaceClass();
rasterSurface.PutRaster((IRaster)beforeGeo, 0);
ISurface pSurface = rasterSurface as ISurface;
surfaceArea = pSurface.GetSurfaceArea(h, esriPlaneReferenceType.esriPlaneReferenceAbove).ToString(".###") + "㎡";
projectArea = pSurface.GetProjectedArea(h, esriPlaneReferenceType.esriPlaneReferenceAbove).ToString(".###") + "㎡";
ISurfaceOp SurfaceOp = new RasterSurfaceOpClass();
IGeoDataset outGeoDataset = SurfaceOp.CutFill(beforeGeo, afterGeo, Type.Missing);
IRasterBandCollection pRsBandCol = outGeoDataset as IRasterBandCollection;
double area = 0.0; //涉及面积
double volume = 0.0; //挖方方量
double volume1 = 0.0; //填方方量
double sumVolume = 0; //挖方总量
double sumVolume1 = 0; //填方总量
for (int i = 0; i < pRsBandCol.Count; i++)
{
IRasterBand pBand = pRsBandCol.Item(0);
ITable pRTable = pBand.AttributeTable;
ICursor pCursor = pRTable.Search(null, true);
IRow pRrow = pCursor.NextRow();
while (pRrow != null)
{
area += Convert.ToDouble(pRrow.get_Value(pRrow.Fields.FindField("AREA")).ToString());
volume = Convert.ToDouble(pRrow.get_Value(pRrow.Fields.FindField("VOLUME")).ToString());
if (volume > 0)
{
sumVolume += volume;
}
else
{
sumVolume1 += volume;
}
pRrow = pCursor.NextRow();
}
}
dig = Math.Round(sumVolume, 3).ToString() + "m³";
fill = Math.Round(Math.Abs(sumVolume1), 3).ToString() + "m³";
}
catch (System.Exception ex)
{
WaitForm.Stop();
}
}
private void Btn_Slope_Click(object sender, EventArgs e)
{
IRasterLayer pFromRasterLayer = m_selectedLayer as IRasterLayer;
if (pFromRasterLayer == null)
{
MessageBox.Show("非栅格图层");
return;
}
IRaster pFromRaster = pFromRasterLayer.Raster;
IRasterBandCollection pFromRasterBandCollection = pFromRaster as IRasterBandCollection;
IRasterBand pFromRasterBand = pFromRasterBandCollection.Item(0);
IRasterDataset pFromRasterDataset = pFromRasterBand as IRasterDataset;
IWorkspaceFactory pWorkspaceFactory = new RasterWorkspaceFactoryClass();
IRasterWorkspace pRasterWorkspace = pWorkspaceFactory.OpenFromFile(@"DB", 0) as IRasterWorkspace;
ISurfaceOp pSurfaceOp = new RasterSurfaceOpClass();
IRasterAnalysisEnvironment pRasterAnalysisEnvironment;
pRasterAnalysisEnvironment = pSurfaceOp as IRasterAnalysisEnvironment;
pRasterAnalysisEnvironment.OutWorkspace = pWorkspaceFactory as IWorkspace;
object zFactor = new object();
IGeoDataset pGeoDataset, pRasterGetDataset;
pRasterGetDataset = pFromRasterDataset as IGeoDataset;
pGeoDataset = pSurfaceOp.Slope(pRasterGetDataset, esriGeoAnalysisSlopeEnum.esriGeoAnalysisSlopePercentrise, ref zFactor);
IRasterBandCollection pOutRasterBandCollection = pGeoDataset as IRasterBandCollection;
string strOutRasterName = pFromRasterLayer.Name.Split('.')[0] + "_slope.tif";
pOutRasterBandCollection.SaveAs(strOutRasterName, pRasterWorkspace as IWorkspace, "TIFF");
IRasterDataset pNewRasterDataset = pRasterWorkspace.OpenRasterDataset(strOutRasterName);
IRasterLayer pNewRasterLayer = new RasterLayerClass();
pNewRasterLayer.CreateFromDataset(pNewRasterDataset);
ILayer pNewLayer = pNewRasterLayer as ILayer;
Ctrl_Map.AddLayer(pNewLayer);
}
public IRaster CreateRasterAspect(IRaster raster)
{
try
{
RasterSurfaceOpClass class2 = new RasterSurfaceOpClass();
IGeoDataset geoDataset = raster as IGeoDataset;
IGeoDataset pGeoDataset = class2.Aspect(geoDataset);
IRaster pRaster = (IRaster)pGeoDataset;
ISaveAs2 pSaveAs = pRaster as ISaveAs2;
IDataset pDataset = pSaveAs.SaveAs(m_ResultPath + ".tif", null, "TIFF");
System.Runtime.InteropServices.Marshal.ReleaseComObject(pDataset);
MessageBox.Show("坡向计算完毕！", "信息", MessageBoxButtons.OK, MessageBoxIcon.Information);
return(pRaster);
}
catch (SystemException e)
{
MessageBox.Show(e.Message, "提示", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
return(null);
}
}
//
//����դ���¶ȷ�������
//
public static ISurfaceOp SetRasterSurfaceAnalysisEnv(string rasterpath, double cellsize)
{
object Missing = Type.Missing;
IWorkspace pWorkspace;
pWorkspace = UtilityFunction.setRasterWorkspace(rasterpath);
ISurfaceOp pSurfaceOp = new RasterSurfaceOpClass();
IRasterAnalysisEnvironment pEnv = pSurfaceOp as IRasterAnalysisEnvironment;
pEnv.OutWorkspace = pWorkspace;
//װ�����
object objCellSize = cellsize;
pEnv.SetCellSize(esriRasterEnvSettingEnum.esriRasterEnvValue, ref objCellSize);
pEnv.SetExtent(esriRasterEnvSettingEnum.esriRasterEnvMaxOf, ref Missing, ref Missing);
return pSurfaceOp;
}
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);
}
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 button1_Click(object sender, EventArgs e)
{
//得到dem、分成多个区域
//获取等高线
ILayer tLayer = this.axMapControl1.get_Layer(0);
IRasterLayer tRasterLayer = (IRasterLayer)tLayer;
IFeatureClass tFeatureClass = null;
IGeoDataset tGeodataset = null;
//使用接口参数（Raster,等高线间距,基值）
ISurfaceOp tSurfaceop = new RasterSurfaceOpClass();
object obj = 0;
tGeodataset = tSurfaceop.Contour((IGeoDataset)tRasterLayer.Raster, 5, ref obj); //等高线间距为10米
IFeatureLayer tFeatureLayer = new FeatureLayerClass();
//判断是否生成等高线
if (tGeodataset != null)
{
tFeatureClass = (IFeatureClass)tGeodataset;
if (tFeatureClass != null)
{
tFeatureLayer.FeatureClass = tFeatureClass;
//this.axMapControl1.AddLayer((ILayer)tFeatureLayer);
//this.axMapControl1.Refresh();
}
}
tFeatureLayer = deleteLine(tFeatureLayer);
this.axMapControl1.AddLayer((ILayer)tFeatureLayer);
this.axMapControl1.Refresh();
/*选取特定高程的等高线*/
//得到Feature的指针
IQueryFilter queryFilter = new SpatialFilterClass();
int maxContour = getMax(tFeatureLayer);
int queryContour = maxContour - 10; //选择具体某条等高线
queryFilter.WhereClause = "Contour = " + queryContour;
IFeatureCursor featureCursor = tFeatureClass.Search(queryFilter, false);
IFeature feature = featureCursor.NextFeature();
//获取表的长度
//int attributeTableLength = tFeatureClass.Fields.FindField("id");
//string lenStr = attributeTableLength.ToString();
//MessageBox.Show(lenStr);
////
//IGeometry geometry;
//IPolyline polyline;
/* 筛选符合要求的等高线*/
//while (feature!=null)
//{
// IFields ptFields = feature.Fields;
// geometry = feature.Shape;
// polyline = (IPolyline)geometry;
// IField field = ptFields.get_Field(0);
// feature.get_Value();
// feature = featureCursor.NextFeature(); //指针移动到下一行。
//}
//释放游标
System.Runtime.InteropServices.Marshal.ReleaseComObject(featureCursor);
//获取选中的等高线
IGeometry geometry = feature.Shape;
IPolyline polyline = (IPolyline)geometry;
//定义列表存储构成等高线的点的坐标、高程
List <IPoint> contourPoint = new List <IPoint>();
contourPoint = getPointByContourLine(polyline);
/*将线转成面,并获取面的面积*/
////初始化Geoprocessor工具
//Geoprocessor processor = new Geoprocessor();
//FeatureToPolygon fPolygon = new FeatureToPolygon();
//fPolygon.in_features = feature;
//fPolygon.out_feature_class = "D:\\testData\\conPolygon.shp";
//processor.Execute(fPolygon,null);
//构造面，并将构成等高线的点赋予面
//IPoint pPoint = new PointClass();
//IPointCollection pointCollection = new PolygonClass();
//object missing = Type.Missing;
//double x, y;
//for (int i = 0; i < contourPoint.Count; i++)
//{
// x = contourPoint[i].X;
// y = contourPoint[i].Y;
// pPoint = new PointClass();
// pPoint.PutCoords(x, y);
// pointCollection.AddPoint(pPoint, ref missing, ref missing);
//}
//IPolygon pPolygon = new PolygonClass();
////生成面
//pPolygon = (IPolygon)pointCollection;
//获取指定数据库的要素类
string path = "D:\\testPolygon";
IFeatureClass featureclass = getFeatureClass(path);
IFeatureLayer polyFeatureLayer = new FeatureLayerClass();
IFeatureClass polyFeatclas = IfeatureBuffer(contourPoint, featureclass, maxContour.ToString());
/*给由等高线生成的面添加新字段Contour(表示等高线高程值是多少)*/
//定义新字段
IField pField = new FieldClass();
//字段编辑
IFieldEdit pFieldEdit = pField as IFieldEdit;
//新建字段名
pFieldEdit.Name_2 = "Contour";
//获取属性表
IClass pTable = polyFeatclas as IClass;
pTable.AddField(pFieldEdit);
IFeature pFea = polyFeatclas.GetFeature(0);
pFea.set_Value(pFea.Fields.FindField("Contour"), maxContour.ToString());
//保存
pFea.Store();
polyFeatureLayer.FeatureClass = polyFeatclas;
//将生成的面加入到当前地图控件中
this.axMapControl1.AddLayer(polyFeatureLayer);
this.axMapControl1.Refresh();
IFeature polyFeature, lineFeature;
polyFeature = polyFeatclas.GetFeature(0);
lineFeature = feature;
double judResult = calculate(polyFeature, lineFeature);
double radius = fitting(contourPoint);
RadiTBox.Text = radius.ToString();
MessageBox.Show(judResult.ToString(), "面积/周长");
}
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 IRasterLayer calWSCons(string _outPath)
{
//��դ�� pMapAlgebraOp
try
{
if (pMapAlgebraOp==null)
{
pMapAlgebraOp = new RasterMapAlgebraOpClass();
}
string strExp = "";
string sRainPath = "";
//��ֱ���ý�����ʴ�����ݻ��ǽ������ݼ���
IRaster pRasterR = null;
if (rbtnR.Checked)
{
pRasterR = (pMap.get_Layer(LayerOprate.getLayerIndexByName(pMap, this.cmbR.Text)) as IRasterLayer).Raster;
pMapAlgebraOp.BindRaster(pRasterR as IGeoDataset, "R");
}
else
{
sRainPath = this.txtPcpPath.Text;
//
IWorkspaceFactory pWsF = new RasterWorkspaceFactoryClass();
IRasterWorkspace pRWs;
IRasterDataset pRDs = new RasterDatasetClass();
IRasterLayer pRLyr = new RasterLayerClass();
pRWs = pWsF.OpenFromFile(sRainPath, 0) as IRasterWorkspace;
string sFileName="";
for (int i = 1; i < 13; i++)
{
sFileName = this.txtPcpPrefix.Text + i.ToString() + this.txtPcpSuffix.Text;
pRDs = pRWs.OpenRasterDataset(sFileName);
pMapAlgebraOp.BindRaster(pRDs as IGeoDataset, sFileName);
strExp = strExp + "[" + sFileName + "] + ";
}
//cal total pcp
strExp = strExp.TrimEnd("+ ".ToCharArray());
IGeoDataset pGeoDsPcp = pMapAlgebraOp.Execute(strExp);
pMapAlgebraOp.BindRaster(pGeoDsPcp, "Pcp");
//cal Ri
strExp = "";
string sFileNameE = "",sDsName="",strExpR="";
for (int i = 1; i < 13; i++)
{
sFileName = this.txtPcpPrefix.Text + i.ToString() + this.txtPcpSuffix.Text;
sFileNameE="["+sFileName+"]";
strExp = "1.735 * pow(10,1.5 * log10((" + sFileNameE + " * " + sFileNameE + ") / [Pcp]) - 0.08188)";
IGeoDataset pGeoDsRi = pMapAlgebraOp.Execute(strExp);
sDsName = "Pcp" + i.ToString();
pMapAlgebraOp.BindRaster(pGeoDsRi, sDsName);
pMapAlgebraOp.UnbindRaster(sFileName);
strExpR = strExpR + "[" + sDsName + "] + ";
}
//cal R
strExpR = strExpR.TrimEnd("+ ".ToCharArray());
IGeoDataset pGeoDsR = pMapAlgebraOp.Execute(strExpR);
pMapAlgebraOp.BindRaster(pGeoDsR, "R");
for (int i = 1; i < 13; i++)
{
sDsName = "Pcp" + i.ToString();
pMapAlgebraOp.UnbindRaster(sDsName);
}
}
//����K����
IRaster pRasterSclay = (pMap.get_Layer(LayerOprate.getLayerIndexByName(pMap, this.cmbSoilClay.Text)) as IRasterLayer).Raster;
pMapAlgebraOp.BindRaster(pRasterSclay as IGeoDataset, "clay");
IRaster pRasterSsand = (pMap.get_Layer(LayerOprate.getLayerIndexByName(pMap, this.cmbSoilSand.Text)) as IRasterLayer).Raster;
pMapAlgebraOp.BindRaster(pRasterSsand as IGeoDataset, "sand");
IRaster pRasterSslit = (pMap.get_Layer(LayerOprate.getLayerIndexByName(pMap, this.cmbSoilSlit.Text)) as IRasterLayer).Raster;
pMapAlgebraOp.BindRaster(pRasterSslit as IGeoDataset, "slit");
IRaster pRasterSOrg = (pMap.get_Layer(LayerOprate.getLayerIndexByName(pMap, this.cmbSoilOrganic.Text)) as IRasterLayer).Raster;
pMapAlgebraOp.BindRaster(pRasterSOrg as IGeoDataset, "org");
//cal K
//K =(0.2 + 0.3 * exp(-0.0256 * soil_sand * (1.0 - soil_silt / 100.0))) * pow((soil_silt * 1.0 / (soil_clay * 1.0 + soil_silt * 1.0)),0.3) * (1.0 - 0.25 * soil_oc / (soil_oc * 1.0 + exp(3.72 - 2.95 * soil_oc))) * (1.0 - (0.7 * ksd) / (ksd + exp(-5.51 + 22.9 * ksd)))
strExp = "(0.2 + 0.3 * Exp(-0.0256 * [sand] * (1.0 - [slit] / 100.0))) * Pow(([slit] * 1.0 / ([clay] * 1.0 + [slit] * 1.0)), 0.3) * (1.0 - 0.25 * [org] * 0.58 / ([org] * 0.58 + Exp(3.72 - 2.95 * [org] * 0.58))) * (1.0 - (0.7 * (1.0 - [sand] / 100.0)) / ((1.0 - [sand] / 100.0) + Exp(-5.51 + 22.9 * (1.0 - [sand] / 100.0))))";
IGeoDataset pGeoDsK = pMapAlgebraOp.Execute(strExp);
pMapAlgebraOp.BindRaster(pGeoDsK, "K");
pMapAlgebraOp.UnbindRaster("clay");
pMapAlgebraOp.UnbindRaster("sand");
pMapAlgebraOp.UnbindRaster("slit");
pMapAlgebraOp.UnbindRaster("org");
//cal L*S
IHydrologyOp pHydrologyOp = new RasterHydrologyOpClass();
object objZLimit = System.Type.Missing;
IRaster pRasterDem = (pMap.get_Layer(LayerOprate.getLayerIndexByName(pMap, this.cmbDem.Text)) as IRasterLayer).Raster;
//Fill Dem
IGeoDataset pGeoDsDemFill =pHydrologyOp.Fill(pRasterDem as IGeoDataset,ref objZLimit);
// cal FlowDirection
IGeoDataset pGeoDsFlowDir = pHydrologyOp.Fill(pGeoDsDemFill, ref objZLimit);
//cal FlowAccumulation
IGeoDataset pGeoDsFlowAcc = pHydrologyOp.Fill(pGeoDsFlowDir, ref objZLimit);
pMapAlgebraOp.BindRaster(pGeoDsFlowAcc, "FlowAcc");
//cal Slope with Deg
ISurfaceOp pSurfaceOp = new RasterSurfaceOpClass();
object objZFactor = System.Type.Missing;
IGeoDataset pGeoDsSlope = pSurfaceOp.Slope(pGeoDsDemFill, esriGeoAnalysisSlopeEnum.esriGeoAnalysisSlopeDegrees, ref objZFactor);
// bind raster data "Slope"
pMapAlgebraOp.BindRaster(pGeoDsSlope, "Slope");
//cal S
strExp = "Con([Slope] < 5,10.8 * Sin([Slope] * 3.14 / 180) + 0.03,[Slope] >= 10,21.9 * Sin([Slope] * 3.14 / 180) - 0.96,16.8 * Sin([Slope] * 3.14 / 180) - 0.5)";
IGeoDataset pGeoDsS = pMapAlgebraOp.Execute(strExp);
pMapAlgebraOp.BindRaster(pGeoDsS, "S");
//cal m
strExp = "Con([Slope] <= 1,0.2,([Slope] > 1 & [Slope] <= 3),0.3,[Slope] >= 5,0.5,0.4)";
IGeoDataset pGeoDsM = pMapAlgebraOp.Execute(strExp);
pMapAlgebraOp.BindRaster(pGeoDsM, "m");
//cal ls
strExp = "[S] * Pow(([FlowAcc] * "+this.txtCellSize.Text+" / 22.1),[m])";
IGeoDataset pGeoDsLS = pMapAlgebraOp.Execute(strExp);
pMapAlgebraOp.BindRaster(pGeoDsLS, "LS");
pMapAlgebraOp.UnbindRaster("m");
pMapAlgebraOp.UnbindRaster("S");
pMapAlgebraOp.UnbindRaster("Slope");
pMapAlgebraOp.UnbindRaster("FlowAcc");
IRaster pRasterC = null;
if (rbtnVegCover.Checked)
{
pRasterC = (pMap.get_Layer(LayerOprate.getLayerIndexByName(pMap, this.cmbC.Text)) as IRasterLayer).Raster;
pMapAlgebraOp.BindRaster(pRasterC as IGeoDataset, "C");
}
else
{
//cal vegetation cover
IRaster pRasterNDVI = (pMap.get_Layer(LayerOprate.getLayerIndexByName(pMap, this.cmbC.Text)) as IRasterLayer).Raster;
IRasterBandCollection pRasterBandCollection = pRasterNDVI as IRasterBandCollection;
IRasterBand pRasterBand = pRasterBandCollection.Item(0);
pRasterBand.ComputeStatsAndHist();
IRasterStatistics pRasterStatistics = pRasterBand.Statistics;
double dMax = pRasterStatistics.Maximum;
double dMin = pRasterStatistics.Minimum;
pMapAlgebraOp.BindRaster(pRasterNDVI as IGeoDataset, "NDVI");
if (dMin < 0)
{
dMin = 0;
}
//veg%yr% = (ndvi%yr% - ndvi%yr%min) / (ndvi%yr%max - ndvi%yr%min)
strExp = "([NDVI] - "+dMin+") / ("+dMax +" - "+dMin+")";
IGeoDataset pGeoDsC = pMapAlgebraOp.Execute(strExp);
pMapAlgebraOp.BindRaster(pGeoDsC, "C");
pMapAlgebraOp.UnbindRaster("NDVI");
}
//����P����
IRaster pRasterP = (pMap.get_Layer(LayerOprate.getLayerIndexByName(pMap, this.cmbP.Text)) as IRasterLayer).Raster;
pMapAlgebraOp.BindRaster(pRasterP as IGeoDataset, "P");
if (_outPath != "")
{
strExp = _outPath + " = [R] * [K] * [LS] * (1 - [C]) * [P]";
}
else
{
strExp = "[R] * [K] * [LS] * (1 - [C]) * [P]";
}
IGeoDataset pGeoDsSr = pMapAlgebraOp.Execute(strExp);
IRaster pOutRaster = pGeoDsSr as IRaster;
IRasterLayer pOutRasterLayer = new RasterLayerClass();
pOutRasterLayer.CreateFromRaster(pOutRaster);
//��������
//string strOutDir = _outPath.Substring(0, _outPath.LastIndexOf("\\"));
int startX = _outPath.LastIndexOf("\\");
int endX = _outPath.Length;
string sRLyrName = _outPath.Substring(startX + 1, endX - startX - 1);
pOutRasterLayer.Name = sRLyrName;
pMapAlgebraOp = null;
return pOutRasterLayer;
}
catch (Exception ex)
{
MessageBox.Show(ex.Message.ToString());
return null;
}
}
private IRasterLayer calTerrain(string _outPath)
{
//绑定栅格到 pMapAlgebraOp
try
{
if (pMapAlgebraOp == null)
{
pMapAlgebraOp = new RasterMapAlgebraOpClass();
}
string strExp = "";
//dem
IRaster pRasterDem = (pMap.get_Layer(LayerOprate.getLayerIndexByName(pMap, this.cmbDem.Text)) as IRasterLayer).Raster;
IGeoDataset pGeoDsDem = pRasterDem as IGeoDataset;
// bind raster data "Dem"
pMapAlgebraOp.BindRaster(pGeoDsDem, "Dem");
//cal Slope with Deg
ISurfaceOp pSurfaceOp = new RasterSurfaceOpClass();
object objZFactor = System.Type.Missing;
IGeoDataset pGeoDsSlope = pSurfaceOp.Slope(pRasterDem as IGeoDataset, esriGeoAnalysisSlopeEnum.esriGeoAnalysisSlopeDegrees, ref objZFactor);
// bind raster data "Slope"
pMapAlgebraOp.BindRaster(pGeoDsSlope, "Slope");
//cal Slo dem
string demStart = this.txtDemStart.Text;
string demEnd = this.txtDemEnd.Text;
string sloStart = this.txtSloStart.Text;
string sloEnd = this.txtSloEnd.Text;
//strExp = "Con([Dem] < " + demStart + ",0,[Dem] > " + demEnd + ",0,1)";
//IGeoDataset pGeoDsDemC = pMapAlgebraOp.Execute(strExp);
//pMapAlgebraOp.BindRaster(pGeoDsDemC, "DemC");
////限制区为1，非限制区为0
//strExp = "Con([Slope] < " + sloStart + ",0,[Slope] > "+sloEnd+",0,1)";
//IGeoDataset pGeoDsSloC = pMapAlgebraOp.Execute(strExp);
//pMapAlgebraOp.BindRaster(pGeoDsSloC, "SloC");
//cal in together
strExp = "Con((([Slope] > " + sloStart + " & [Slope] < " + sloEnd + ") & ([Dem] > " + demStart + " & [Dem] < " + demEnd + ")),1,0)";
IGeoDataset pGeoDsC = pMapAlgebraOp.Execute(strExp);
pMapAlgebraOp.BindRaster(pGeoDsC, "TerrainRedL");
pMapAlgebraOp.UnbindRaster("Dem");
pMapAlgebraOp.UnbindRaster("Slope");
IRaster pOutRaster = pGeoDsC as IRaster;
IRasterLayer pOutRasterLayer = new RasterLayerClass();
pOutRasterLayer.CreateFromRaster(pOutRaster);
//数据名称
//string strOutDir = _outPath.Substring(0, _outPath.LastIndexOf("\\"));
int startX = _outPath.LastIndexOf("\\");
int endX = _outPath.Length;
string sRLyrName = _outPath.Substring(startX + 1, endX - startX - 1);
pOutRasterLayer.Name = sRLyrName;
pMapAlgebraOp = null;
return pOutRasterLayer;
}
catch (Exception ex)
{
MessageBox.Show(ex.Message.ToString());
return null;
}
}
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
}
private void iDW插值ToolStripMenuItem_Click(object sender, EventArgs e)
{
IFeatureClass pFeatureClass = GetFeatureClass(@".\data\IDW数据", "山东20100321");
IGeoDataset pGeoDataset = IDW(pFeatureClass, "H", 0.005, 0.05, 2);
IRasterLayer pRasterlayer = new RasterLayerClass();
//IRasterDataset pRs = pGeoDataset as IRasterDataset;
pRasterlayer.CreateFromRaster(pGeoDataset as IRaster);
axMapControl1.Map.AddLayer(pRasterlayer as ILayer);
ISurfaceOp pSurface = new RasterSurfaceOpClass();
object BaseHeight = Type.Missing;
IGeoDataset p = pSurface.Contour(pGeoDataset, 2, ref BaseHeight);
IFeatureLayer pFContourLayer = new FeatureLayerClass();
pFContourLayer.FeatureClass = p as IFeatureClass;
axMapControl1.AddLayer(pFContourLayer as ILayer);
axMapControl1.Refresh();
IWorkspaceFactory WF = new RasterWorkspaceFactoryClass();
IWorkspace pRasterWS = WF.OpenFromFile(@".\data\IDW数据", 0);
ISaveAs pSaveAs = (ISaveAs)pGeoDataset;
pSaveAs.SaveAs("RasterTest.tif", pRasterWS, "TIFF");
axMapControl1.ActiveView.Refresh();
}
