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);
}
/// <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);
}
/// <summary>
/// Save the edition as a specified file.
/// </summary>
/// <param name="fileName">New file path of raster layer to be saved.</param>
/// <param name="activeLayer">Raster layer to be saved.</param>
/// <param name="edits">Pixel collection that contains edited pixels.</param>
public static void SaveEditsAs(string fileName, IRasterLayer activeLayer, PixelCollection edits)
{
if (activeLayer == null || edits.Count == 0)
{
return;
}
//Random rnd = new Random();
//string tempFile = rnd.Next().ToString();
ESRI.ArcGIS.RuntimeManager.BindLicense(ESRI.ArcGIS.ProductCode.EngineOrDesktop);
// Get the original file
// IRasterLayer rasterLayer = activeLayer;
IWorkspaceFactory workspaceFactory = new RasterWorkspaceFactoryClass();
//IRasterWorkspace rasterWorkspace = (IRasterWorkspace)workspaceFactory.OpenFromFile(System.IO.Path.GetDirectoryName(rasterLayer.FilePath), 0);
//IRasterDataset rasterDataset = rasterWorkspace.OpenRasterDataset(System.IO.Path.GetFileName(rasterLayer.FilePath));
// Open the new file save location
IWorkspace mWorkspace = workspaceFactory.OpenFromFile(System.IO.Path.GetDirectoryName(fileName), 0);
// Save the original file to a new file
ISaveAs saveAs = (ISaveAs)activeLayer.Raster;
IRasterDataset2 mRasterDataset = (IRasterDataset2)saveAs.SaveAs(System.IO.Path.GetFileName(fileName),
mWorkspace,
Raster.GetFormat(System.IO.Path.GetExtension(fileName)));
IRaster mRaster = mRasterDataset.CreateFullRaster();
// Save edits to file
Raster.WriteEdits(mRaster, edits);
System.Runtime.InteropServices.Marshal.ReleaseComObject(mRaster);
}
static void Mosaic(IRasterCatalog rasterCatalog)
{
try
{
//Mosaics all rasters in the raster catalog to an output raster dataset
IMosaicRaster mosaicRaster = new MosaicRasterClass();
mosaicRaster.RasterCatalog = rasterCatalog;
//Set mosaicking options, you may not need to set these for your data
mosaicRaster.MosaicColormapMode = rstMosaicColormapMode.MM_MATCH;
mosaicRaster.MosaicOperatorType = rstMosaicOperatorType.MT_LAST;
//Open output workspace
IWorkspaceFactory workspaceFactory = new RasterWorkspaceFactoryClass();
IWorkspace workspace = workspaceFactory.OpenFromFile(outputFolder, 0);
//Save out to a target raster dataset
//It can be saved to TIFF, IMG, GRID, BMP, GIF, JPEG2000, JPEG, Geodatabase, ect.
ISaveAs saveas = (ISaveAs)mosaicRaster;
saveas.SaveAs(outputName, workspace, "TIFF");
}
catch (Exception exc)
{
Console.WriteLine(exc.Message);
}
}
public static void exportRasterData(string parth, IRasterLayer rasterLayer, float[,] rasterMat) //输出栅格数据
{
string directory = parth.Substring(0, parth.LastIndexOf("\\"));
string name = parth.Substring(parth.LastIndexOf("\\") + 1);
IWorkspaceFactory workspaceFac = new RasterWorkspaceFactoryClass();
IRasterWorkspace2 rasterWorkspace2 = workspaceFac.OpenFromFile(directory, 0) as IRasterWorkspace2;
IRasterInfo rasterInfo = (rasterLayer.Raster as IRawBlocks).RasterInfo;
IPoint originPoint = new Point();
originPoint.PutCoords(rasterInfo.Origin.X, rasterInfo.Origin.Y - (rasterLayer.Raster as IRasterProps).Height * (rasterLayer.Raster as IRasterProps).MeanCellSize().Y);
IRasterProps rasterProps = rasterLayer.Raster as IRasterProps;
IRasterDataset rasterDataSet = rasterWorkspace2.CreateRasterDataset(name, "IMAGINE Image", originPoint, rasterProps.Width, rasterProps.Height,
rasterProps.MeanCellSize().X, rasterProps.MeanCellSize().Y, 1, rstPixelType.PT_FLOAT, rasterProps.SpatialReference, true) as IRasterDataset2;
IRaster2 raster2 = rasterDataSet.CreateDefaultRaster() as IRaster2;
IPnt pntClass = new Pnt();
pntClass.X = rasterProps.Width;
pntClass.Y = rasterProps.Height;
IRasterCursor rasterCursor = raster2.CreateCursorEx(pntClass);
IRasterCursor inRasterCursor = (rasterLayer.Raster as IRaster2).CreateCursorEx(pntClass);
IRasterEdit rasterEdit = raster2 as IRasterEdit;
if (rasterEdit.CanEdit())
{
IPixelBlock3 pixelBlock3 = rasterCursor.PixelBlock as IPixelBlock3;
IPixelBlock3 inPixelBlock3 = inRasterCursor.PixelBlock as IPixelBlock3;
System.Array pixels = (System.Array)rasterMat;
pixelBlock3.set_PixelData(0, (System.Array)pixels);
rasterEdit.Write(rasterCursor.TopLeft, (IPixelBlock)pixelBlock3);
System.Runtime.InteropServices.Marshal.ReleaseComObject(pixelBlock3);
}
rasterEdit.Refresh();
IGeoDataset inDataset = rasterLayer.Raster as IGeoDataset;
IGeoDataset outDataset = rasterDataSet as IGeoDataset;
IExtractionOp op = new RasterExtractionOpClass();
var outDataset1 = op.Raster(outDataset, inDataset);
var clipRaster = (IRaster)outDataset1;
ISaveAs pSaveAs = clipRaster as ISaveAs;
System.Runtime.InteropServices.Marshal.ReleaseComObject(rasterCursor);
System.Runtime.InteropServices.Marshal.ReleaseComObject(rasterEdit);
System.Runtime.InteropServices.Marshal.ReleaseComObject(raster2);
System.Runtime.InteropServices.Marshal.ReleaseComObject(rasterDataSet);
System.Runtime.InteropServices.Marshal.ReleaseComObject(rasterWorkspace2);
System.Runtime.InteropServices.Marshal.ReleaseComObject(workspaceFac);
if (File.Exists(parth))
{
File.Delete(parth);
}
workspaceFac = new RasterWorkspaceFactoryClass();
IDataset outdataset = pSaveAs.SaveAs(name, workspaceFac.OpenFromFile(directory, 0), "IMAGINE Image");
System.Runtime.InteropServices.Marshal.ReleaseComObject(outdataset);
return;
}
//保存分析结果
public static void SaveRasterLayerTofile(IRasterLayer pRasterLayer, string fileName, string strFileExtension = "TIFF")
{
IRaster pRaster = pRasterLayer.Raster;
IRaster2 pRaster2 = pRaster as IRaster2;
ISaveAs pSaveAs = pRaster2 as ISaveAs;
pSaveAs.SaveAs(fileName, null, strFileExtension);
}
public void ExportRaster(IRasterDataset rasterDataset, string path, string sFormat, string sName)
{
IWorkspaceFactory wsF = new RasterWorkspaceFactoryClass();
IWorkspace ws = wsF.OpenFromFile(path, 0);
ISaveAs saveAs = rasterDataset as ISaveAs;
saveAs.SaveAs(sName, ws, sFormat);
}
void UpdateSaveAs()
{
bool isSavable = false;
ISaveAs saveAs = source.Provider as ISaveAs;
if (saveAs != null)
{
isSavable = saveAs.IsSavableAs;
}
WriteControl(ControlFlag.SaveAsButton | ControlFlag.Enabled, isSavable);
}
/// <summary>
/// 合并栅格目录中的所有栅格
/// </summary>
/// <param name="pRasterCatalog"></param>
/// <param name="outputFolder"></param>
/// <param name="pOutputName"></param>
public void Mosaic(IRasterCatalog pRasterCatalog, IWorkspace pWorkspace, string pOutputName)
{
IMosaicRaster pMosaicRaster = new MosaicRasterClass();
pMosaicRaster.RasterCatalog = pRasterCatalog;
pMosaicRaster.MosaicColormapMode = rstMosaicColormapMode.MM_MATCH;
pMosaicRaster.MosaicOperatorType = rstMosaicOperatorType.MT_LAST;
ISaveAs pSaveas = (ISaveAs)pMosaicRaster;
pSaveas.SaveAs(pOutputName, pWorkspace, "IMAGINE Image");
}
/// <summary>
/// 保存栅格到本地
/// </summary>
/// <param name="raster">IRaster</param>
/// <param name="fileName">本地路径全名</param>
/// <returns>0:成功 !=0:失败</returns>
private int RasterSaveAs(IRaster raster, string fileName)
{
int result = 0;
try
{
IWorkspaceFactory pWKSF = new RasterWorkspaceFactoryClass();
IWorkspace pWorkspace = pWKSF.OpenFromFile(System.IO.Path.GetDirectoryName(fileName), 0);
ISaveAs pSaveAs = raster as ISaveAs;
pSaveAs.SaveAs(System.IO.Path.GetFileName(fileName), pWorkspace, "IMAGINE Image");
result = 0;
}
catch (Exception ex)
{
result = 1;
}
return(result);
}
public static void RasterClip(IRasterLayer pRasterLayer, IPolygon clipGeo)
{
IRaster pRaster = pRasterLayer.Raster;
IRasterProps pProps = pRaster as IRasterProps;
object cellSizeProvider = pProps.MeanCellSize().X;
IGeoDataset pInputDataset = pRaster as IGeoDataset;
IExtractionOp pExtractionOp = new RasterExtractionOpClass();
IRasterAnalysisEnvironment pRasterAnaEnvir = pExtractionOp as IRasterAnalysisEnvironment;
pRasterAnaEnvir.SetCellSize(esriRasterEnvSettingEnum.esriRasterEnvValue, ref cellSizeProvider);
object extentProvider = clipGeo.Envelope;
object snapRasterData = Type.Missing;
pRasterAnaEnvir.SetExtent(esriRasterEnvSettingEnum.esriRasterEnvMinOf, ref extentProvider, ref snapRasterData);
//IWorkspaceFactory pWrokspaceFactory = new RasterWorkspaceFactoryClass();
//if (flag == 0)
//{
// flag++;
//}
//if (flag == 1)
//{
// pRasterAnaEnvir.OutWorkspace = pWrokspaceFactory.OpenFromFile("D://temp", 0);
//}
IGeoDataset pOutputDataset = pExtractionOp.Polygon(pInputDataset, clipGeo, true); //裁切操作
IRaster clipRaster = pOutputDataset as IRaster; //裁切后得到的IRaster
//保存裁切后得到的clipRaster
//如果直接保存为img影像文件
IWorkspaceFactory pWKSF = new RasterWorkspaceFactory();
SaveFileDialog savefile = new SaveFileDialog();
savefile.Title = "选择输出影像";
savefile.Filter = "栅格文件(*.tif)|*.tif|栅格文件(*.img)|*.img";
if (savefile.ShowDialog() == DialogResult.OK)
{
IWorkspace pWorkspace = pWKSF.OpenFromFile(System.IO.Path.GetDirectoryName(savefile.FileName), 0);
ISaveAs pSaveAs = clipRaster as ISaveAs;
pSaveAs.SaveAs(System.IO.Path.GetFileName(savefile.FileName), pWorkspace, "TIFF");//以img格式保存;
MessageBox.Show("裁切成功！", "信息提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
}
private void ShowAndSave(IGeoDataset geoDataset)
{
IRasterLayer rasterLayer = new RasterLayerClass();
IRaster raster = new Raster();
raster = (IRaster)geoDataset;
rasterLayer.CreateFromRaster(raster);
try
{
rasterLayer.Name = System.IO.Path.GetFileName(textBox1.Text);
mainForm.axMapControl1.AddLayer((ILayer)rasterLayer, 0);
mainForm.axMapControl1.ActiveView.Refresh();
IWorkspaceFactory pWKSF = new RasterWorkspaceFactoryClass();
IWorkspace pWorkspace = pWKSF.OpenFromFile(System.IO.Path.GetDirectoryName(textBox1.Text), 0);
ISaveAs pSaveAs = raster as ISaveAs;
pSaveAs.SaveAs(System.IO.Path.GetFileName(textBox1.Text), pWorkspace, "TIFF");
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
}
}
/// <summary>
/// Calculates the specified veg index.
/// </summary>
/// <param name="index">The index.</param>
/// <param name="inFile">The in file.</param>
/// <param name="outFile">The out file.</param>
/// <param name="redIndex">Index of the red.</param>
/// <param name="nirIndex">Index of the nir.</param>
/// <param name="blueIndex">Index of the blue.</param>
/// <param name="land">The land index.</param>
/// <exception cref="System.Exception">不支持的植被指数</exception>
public static void Calculate(VegIndex index, string inFile, string outFile, int redIndex, int nirIndex, int blueIndex = -1, float land = -1f)
{
IMapAlgebraOp pRSalgebra = null;
IGeoDataset resDataset = null;
ISaveAs pSaveAs = null;
IWorkspaceFactory pWKSF = null;
IWorkspace pWorkspace = null;
string expression = string.Empty;
try
{
pRSalgebra = new RasterMapAlgebraOpClass();
switch (index)
{
case VegIndex.DVI:
expression = "[NIR] - [RED]";
break;
case VegIndex.EVI:
expression = "2.5 * ([NIR] - [RED]) / ([NIR] + 6.0 * [RED] - 7.5 * [BLUE] + 1)";
pRSalgebra.BindRaster(GFS.Common.EngineAPI.OpenRasterDataset(inFile, blueIndex) as IGeoDataset, "BLUE");
break;
case VegIndex.NDVI:
expression = "([NIR] - [RED]) / ([NIR] + [RED])";
break;
case VegIndex.RVI:
expression = "[NIR] / [RED]";
break;
case VegIndex.SAVI:
expression = "([NIR] - [RED]) * (1 + " + land + ") / ([NIR] + [RED] + " + land + ")";
break;
default:
throw new Exception("不支持的植被指数");
}
pRSalgebra.BindRaster(GFS.Common.EngineAPI.OpenRasterDataset(inFile, redIndex) as IGeoDataset, "RED");
pRSalgebra.BindRaster(GFS.Common.EngineAPI.OpenRasterDataset(inFile, nirIndex) as IGeoDataset, "NIR");
resDataset = pRSalgebra.Execute(expression);
pSaveAs = resDataset as ISaveAs;
if (File.Exists(outFile))
{
File.Delete(outFile);
}
FileInfo fInfo = new FileInfo(outFile);
pWKSF = new RasterWorkspaceFactoryClass();
pWorkspace = pWKSF.OpenFromFile(fInfo.DirectoryName, 0);
if (fInfo.Extension == ".img")
{
pSaveAs.SaveAs(fInfo.Name, pWorkspace, "IMAGINE Image");
}
if (fInfo.Extension == ".tif")
{
pSaveAs.SaveAs(fInfo.Name, pWorkspace, "TIFF");
}
}
catch (Exception ex)
{
GFS.BLL.Log.WriteLog(typeof(VegetationIndex), ex);
throw ex;
}
finally
{
if (pSaveAs != null)
{
System.Runtime.InteropServices.Marshal.ReleaseComObject(pSaveAs);
}
if (resDataset != null)
{
System.Runtime.InteropServices.Marshal.ReleaseComObject(resDataset);
}
if (pRSalgebra != null)
{
System.Runtime.InteropServices.Marshal.ReleaseComObject(pRSalgebra);
}
if (pWorkspace != null)
{
System.Runtime.InteropServices.Marshal.ReleaseComObject(pWorkspace);
}
if (pWKSF != null)
{
System.Runtime.InteropServices.Marshal.ReleaseComObject(pWKSF);
}
}
}
private void button2_Click(object sender, EventArgs e)
{
IReclassOp reCla;
reCla = new RasterReclassOp() as IReclassOp;
//符号化
IRemap pRemap;
INumberRemap pSRemap;
pSRemap = new NumberRemap() as INumberRemap;
for (int i = 1; i <= Convert.ToInt32(comboBox2.SelectedItem.ToString()); i++)
{
try
{
string str;
str = dataGridView1.Rows[i - 1].Cells[0].Value.ToString();
float fValue, tValue;
int p;
p = str.LastIndexOf("-");
fValue = Convert.ToSingle(str.Substring(0, p));
tValue = Convert.ToSingle(str.Substring(p + 1, str.Length - p - 1));
pSRemap.MapRange(fValue, tValue, Convert.ToInt32(dataGridView1.Rows[i - 1].Cells[1].Value));
}
catch
{
MessageBox.Show("Error!");
return;
}
}
pRemap = (IRemap)pSRemap;
//获取栅格图层
IRasterLayer play = (IRasterLayer)GetLayerByName(comboBox1.SelectedItem.ToString());
IRaster pRster = play.Raster;
IGeoDataset pOutputRaster = null;
try
{
pOutputRaster = reCla.ReclassByRemap((IGeoDataset)pRster, pRemap, true);
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
}
try
{
IWorkspaceFactory pWKSF = new RasterWorkspaceFactoryClass();
IWorkspace pWorkspace = pWKSF.OpenFromFile(System.IO.Path.GetDirectoryName(textBox1.Text), 0);
ISaveAs pSaveAs = pOutputRaster 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)pOutputRaster);
pRlayer.Name = System.IO.Path.GetFileName(textBox1.Text);
global.p2DMap.AddLayer(pRlayer);
global.p3DMap.Scene.AddLayer(pRlayer);
mainForm.axTOCControl1.Update();
mainForm.axTOCControl2.Update();
}
/// <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);
}
/// <summary>
/// 根据范围提取数据
/// </summary>
/// <param name="pFileName">目标数据名称（不包含路径）</param>
/// <param name="clipExtent">几何范围</param>
/// <param name="pDesWS">目标数据工作空间</param>
/// <param name="format">目标数据类型</param>
/// <param name="pResRatser">源栅格数据</param>
/// <param name="bIn">true:表明提取几何范围内部的数据；false:提取几何范围外部的数据</param>
/// <param name="eError"></param>
private void StractData(string pFileName, IGeometry clipExtent, IWorkspace pDesWS, string format, IRaster pResRatser, bool bIn, out Exception eError)
{
eError = null;
IExtractionOp extraction = new RasterExtractionOpClass();
#region 进行裁切
IGeoDataset pOrgGeoDt = pResRatser as IGeoDataset;
IGeoDataset pDesGeoDt = null;
IPolygon pPoly = clipExtent as IPolygon;
ICircularArc pArc = clipExtent as ICircularArc;
IPointCollection pPointColl = clipExtent as IPointCollection;
IEnvelope pRec = clipExtent as IEnvelope;
if (pPoly != null)
{
//几何范围是多边形
pDesGeoDt = extraction.Polygon(pOrgGeoDt, pPoly, checkBoxClip.Checked);
}
else if (pArc != null)
{
//几何范围是圆形
pDesGeoDt = extraction.Circle(pOrgGeoDt, pArc, checkBoxClip.Checked);
}
else if (pRec != null)
{
//几何范围是矩形
pDesGeoDt = extraction.Rectangle(pOrgGeoDt, pRec, checkBoxClip.Checked);
}
else if (pPointColl != null)
{
//几何范围是点集
pDesGeoDt = extraction.Points(pOrgGeoDt, pPointColl, checkBoxClip.Checked);
}
#endregion
#region 进行保存
IRaster pDesRaster = pDesGeoDt as IRaster;
ISaveAs pSaveAs = pDesRaster as ISaveAs;
if (format == "TIF")
{
if (!pSaveAs.CanSaveAs("TIFF"))
{
eError = new Exception("该栅格数据不能保存为tiff格式！");
return;
}
pSaveAs.SaveAs(pFileName, pDesWS, "TIFF");
}
else if (format == "IMG")
{
if (!pSaveAs.CanSaveAs("IMAGINE Image"))
{
eError = new Exception("该栅格数据不能保存为IMG格式！");
return;
}
pSaveAs.SaveAs(pFileName, pDesWS, "IMAGINE Image");
}
else
{
//geodatabase结构数据需要用另外的方式来保存数据：PDB、GDB
//geodatabase根据已有的rasterDataset生成目标rasterDataset(clipExtent几何限制条件没用上)
IRaster2 pOrgRaster2 = pResRatser as IRaster2;
if (pOrgRaster2 == null)
{
return;
}
IRasterDataset mOrgRDataset = pOrgRaster2.RasterDataset; //源栅格数据集
if (mOrgRDataset.CanCopy())
{
mOrgRDataset.Copy(m_DesRasterCollName, pDesWS);
}
}
#endregion
}
/// <summary>
/// 降维
/// </summary>
public bool BandReduce(out string msg)
{
IRasterDataset pRasterDataset = null;
IRaster pRaster = null;
StreamReader sr = null;
IWorkspaceFactory pWKSF = null;
IWorkspace pWorkspace = null;
try
{
//调用IDL代码降维，存在32位内存不足问题。
_Hyper_BandReduce = System.IO.Path.Combine(BLL.ConstDef.PATH_TEMP, DateTime.Now.ToFileTime().ToString() + ".tif");
//string cmd = BLL.ConstDef.IDL_FUN_BANDREDUCE + ",'" + _Hyper + "','" + ConstDef.FILE_BANDS + "','" + _Hyper_BandReduce + "'";
//BLL.EnviVars.instance.IdlModel.Execute(cmd);
//BLL.EnviVars.instance.IdlModel.Distroy();
sr = new StreamReader(ConstDef.FILE_BANDS, Encoding.Default);
string strBands = sr.ReadLine();
string[] bandsArr = strBands.Split(',');
pRasterDataset = EngineAPI.OpenRasterFile(_Hyper);
pRaster = (pRasterDataset as IRasterDataset2).CreateFullRaster();
IRasterBandCollection pRasterBandCollection = pRaster as IRasterBandCollection;
foreach (string str in bandsArr)
{
int bandIndex = int.Parse(str) - 1;
if (-1 < bandIndex && bandIndex < pRasterBandCollection.Count)
{
pRasterBandCollection.Remove(bandIndex);
}
}
IRasterBand pBand = pRasterBandCollection.Item(0);
IRasterDataset pOutRasterDataset = pBand.RasterDataset;
ISaveAs pSaveAs = pOutRasterDataset as ISaveAs;
FileInfo fInfo = new FileInfo(_Hyper_BandReduce);
pWKSF = new RasterWorkspaceFactoryClass();
pWorkspace = pWKSF.OpenFromFile(fInfo.DirectoryName, 0);
if (fInfo.Extension == ".img")
{
IDataset pDataset = pSaveAs.SaveAs(fInfo.Name, pWorkspace, "IMAGINE Image");
Marshal.ReleaseComObject(pDataset);
}
if (fInfo.Extension == ".tif")
{
IDataset pDataset = pSaveAs.SaveAs(fInfo.Name, pWorkspace, "TIFF");
Marshal.ReleaseComObject(pDataset);
}
Marshal.ReleaseComObject(pSaveAs);
msg = "";
return(true);
}
catch (Exception ex)
{
msg = ex.Message;
return(false);
}
finally
{
if (pWorkspace != null)
{
Marshal.ReleaseComObject(pWorkspace);
}
if (pWKSF != null)
{
Marshal.ReleaseComObject(pWKSF);
}
if (pRaster != null)
{
Marshal.ReleaseComObject(pRaster);
}
sr.Close();
sr.Dispose();
}
}
static void Main()
{
#region Initialize license
ESRI.ArcGIS.esriSystem.AoInitialize aoInit = null;
try
{
ESRI.ArcGIS.RuntimeManager.Bind(ESRI.ArcGIS.ProductCode.Desktop);
aoInit = new AoInitializeClass();
esriLicenseStatus licStatus = aoInit.Initialize(esriLicenseProductCode.esriLicenseProductCodeBasic);
Console.WriteLine("License Checkout successful.");
}
catch (Exception exc)
{
// If it fails at this point, shutdown the test and ignore any subsequent errors.
Console.WriteLine(exc.Message);
}
#endregion
try
{
//Get the location for data installed with .net sdk
string versionInfo = RuntimeManager.ActiveRuntime.Version;
RegistryKey regKey = Registry.LocalMachine.OpenSubKey(@"SOFTWARE\ESRI\ArcObjectsSDK" + versionInfo + @"\.NET");
string path = System.Convert.ToString(regKey.GetValue("MainDir"));
string rasterFolder = System.IO.Path.Combine(path, @"Samples\ArcObjectsNET\CustomNodataFilter");
IPixelOperation raster = (IPixelOperation)OpenRasterDataset(rasterFolder, "testimage.tif");
if (raster == null)
{
Console.WriteLine("invalid raster");
return;
}
//create nodatafilter and set properties
CustomNodataFilter.INodataFilter nFilter = new CustomNodataFilter.NodataFilter();
//filter out all values between 0 and 50 as nodata
nFilter.MinNodataValue = 0;
nFilter.MaxNodataValue = 50;
//apply the convolutionfilter to raster
raster.PixelFilter = nFilter;
//set nodata value using the minimum of the nodata range
IRasterProps rasterProps = (IRasterProps)raster;
rasterProps.NoDataValue = 0;
//save the filtered raster to a new raster dataset in TEMP directory
ISaveAs saveAs = (ISaveAs)raster;
//IWorkspace workspace = OpenWorkspace(Environment.GetEnvironmentVariable("TEMP"));
IWorkspace workspace = OpenWorkspace(rasterFolder);
saveAs.SaveAs("nodata.tif", workspace, "TIFF");
Console.WriteLine("Completed");
Console.ReadLine();
}
catch (Exception e)
{
Console.WriteLine(e.Message);
}
//ESRI License Initializer generated code.
//Do not make any call to ArcObjects after ShutDown()
aoInit.Shutdown();
}
/// <summary>
/// 提取信息熵小于阈值的纯净像元.
/// </summary>
/// <param name="msg">The MSG.</param>
/// <returns><c>true</c> if XXXX, <c>false</c> otherwise.</returns>
public bool ExtractPurePixel(out string msg)
{
IMapAlgebraOp pRSalgebra = null;
IRasterDataset pRDEntropy = null;
IRasterDataset pRDClass = null;
try
{
//运算公式
string condition = "[ENTROPY] >= " + _Hyper_Entropy_T;
//string expression = "SETNULL(" + condition +",[CLASS])";
string expression = "CON(" + condition + ",0,[CLASS])";
//文件绑定
pRSalgebra = new RasterMapAlgebraOpClass();
pRDEntropy = EngineAPI.OpenRasterFile(_Hyper_Entropy);
pRSalgebra.BindRaster(pRDEntropy as IGeoDataset, "ENTROPY");
pRDClass = EngineAPI.OpenRasterFile(_Hyper_Class);
pRSalgebra.BindRaster(pRDClass as IGeoDataset, "CLASS");
//执行运算
IGeoDataset resDataset = pRSalgebra.Execute(expression);
//另存结果
_Hyper_PurePixel = System.IO.Path.Combine(BLL.ConstDef.PATH_TEMP, "PurePixel_" + DateTime.Now.ToFileTime().ToString() + ".tif");
ISaveAs pSaveAs = resDataset as ISaveAs;
if (File.Exists(_Hyper_PurePixel))
{
File.Delete(_Hyper_PurePixel);
}
FileInfo fInfo = new FileInfo(_Hyper_PurePixel);
IWorkspaceFactory pWKSF03 = new RasterWorkspaceFactoryClass();
IWorkspace pWorkspace03 = pWKSF03.OpenFromFile(fInfo.DirectoryName, 0);
if (fInfo.Extension == ".img")
{
IDataset pDataset = pSaveAs.SaveAs(fInfo.Name, pWorkspace03, "IMAGINE Image");
Marshal.ReleaseComObject(pDataset);
}
if (fInfo.Extension == ".tif")
{
IDataset pDataset = pSaveAs.SaveAs(fInfo.Name, pWorkspace03, "TIFF");
Marshal.ReleaseComObject(pDataset);
}
if (resDataset != null)
{
Marshal.ReleaseComObject(resDataset);
}
if (pSaveAs != null)
{
Marshal.ReleaseComObject(pSaveAs);
}
msg = "";
return(true);
}
catch (Exception ex)
{
msg = ex.Message;
return(false);
}
finally
{
if (pRDClass != null)
{
Marshal.ReleaseComObject(pRDClass);
}
if (pRDEntropy != null)
{
Marshal.ReleaseComObject(pRDEntropy);
}
if (pRSalgebra != null)
{
Marshal.ReleaseComObject(pRSalgebra);
}
}
}
public bool MergePixel(out string msg)
{
IMapAlgebraOp pRSalgebra = null;
IRasterDataset pRuleDataset = null;
IRasterDataset pPixelDataset = null;
IWorkspaceFactory pWKSF = null;
IWorkspace pWorkspace = null;
string bandDirectory = System.IO.Path.Combine(BLL.ConstDef.PATH_TEMP, DateTime.Now.ToFileTime().ToString());
try
{
Directory.CreateDirectory(bandDirectory);
List <string> uniqueVlaues = EngineAPI.GetRasterUniqueValue(_Hyper_PurePixel);
pWKSF = new RasterWorkspaceFactoryClass();
pWorkspace = pWKSF.OpenFromFile(bandDirectory, 0);
for (int i = 0; i < uniqueVlaues.Count; i++)
{
if (uniqueVlaues[i] == "0")
{
continue;
}
string condition = "[PURE] == " + uniqueVlaues[i];
string exp = "CON(" + condition + ",[PURE],[RULE])";
pRuleDataset = EngineAPI.OpenRasterDataset(_Hyper_Rule, i);
pPixelDataset = EngineAPI.OpenRasterFile(_Hyper_PurePixel);
pRSalgebra = new RasterMapAlgebraOpClass();
pRSalgebra.BindRaster(pPixelDataset as IGeoDataset, "PURE");
pRSalgebra.BindRaster(pRuleDataset as IGeoDataset, "RULE");
IGeoDataset resDataset = pRSalgebra.Execute(exp);
string bandFileName = "class_" + uniqueVlaues[i] + ".tif";
string bandFile = System.IO.Path.Combine(bandDirectory, bandFileName);
ISaveAs pSaveAs = resDataset as ISaveAs;
if (File.Exists(bandFile))
{
File.Delete(bandFile);
}
IDataset pDataset = pSaveAs.SaveAs(bandFileName, pWorkspace, "TIFF");
if (pDataset != null)
{
Marshal.ReleaseComObject(pDataset);
}
if (resDataset != null)
{
Marshal.ReleaseComObject(resDataset);
}
if (pSaveAs != null)
{
Marshal.ReleaseComObject(pSaveAs);
}
}
//layer stack
string cmd = "bandcompose,'" + bandDirectory + "','" + _Result + "'";
BLL.EnviVars.instance.IdlModel.Execute(cmd);
msg = "";
return(true);
}
catch (Exception ex)
{
msg = ex.Message;
return(false);
}
finally
{
if (pRuleDataset != null)
{
Marshal.ReleaseComObject(pRuleDataset);
}
if (pPixelDataset != null)
{
Marshal.ReleaseComObject(pPixelDataset);
}
if (pRSalgebra != null)
{
Marshal.ReleaseComObject(pRSalgebra);
}
if (pWKSF != null)
{
Marshal.ReleaseComObject(pWKSF);
}
if (pWorkspace != null)
{
Marshal.ReleaseComObject(pWorkspace);
}
}
}