Ejemplo n.º 1
0
//---------------------------------------------------------
inline bool CXYZ_Import::Read_Values(CSG_File &Stream, double &x, double &y, double &z)
{
	CSG_String	sLine;

	if( Stream.Read_Line(sLine) )
	{
		sLine.Trim();

		if( sLine.asDouble(x) )
		{
			sLine	= sLine.AfterFirst(m_Separator);

			sLine.Trim();

			if( sLine.asDouble(y) )
			{
				sLine	= sLine.AfterFirst(m_Separator);

				if( sLine.asDouble(z) )
				{
					return( true );
				}
			}
		}
	}

	return( false );
}
Ejemplo n.º 2
0
//---------------------------------------------------------
bool CSG_Shapes_OGIS_Converter::from_WKText(const CSG_String &Text, CSG_Shape *pShape)
{
	pShape->Del_Parts();

	CSG_String	Type	= Text.BeforeFirst('(');

	Type.Trim(true);
	Type.Trim(false);

	switch( pShape->Get_Type() )
	{
	case SHAPE_TYPE_Point:
		if( !Type.CmpNoCase(SG_OGIS_TYPE_STR_Point) )
		{
			return( _WKT_Read_Point(Text.AfterFirst('(').BeforeFirst(')'), pShape, 0) );
		}
		break;

	case SHAPE_TYPE_Points:
		if( !Type.CmpNoCase(SG_OGIS_TYPE_STR_MultiPoint) )
		{
			return( _WKT_Read_Parts(Text, pShape) );
		}
		break;

	case SHAPE_TYPE_Line:
		if( !Type.CmpNoCase(SG_OGIS_TYPE_STR_Line) )
		{
			return( _WKT_Read_Points(Text, pShape) );
		}

		if( !Type.CmpNoCase(SG_OGIS_TYPE_STR_MultiLine) )
		{
			return( _WKT_Read_Parts(Text, pShape) );
		}
		break;

	case SHAPE_TYPE_Polygon:
		if( !Type.CmpNoCase(SG_OGIS_TYPE_STR_Polygon) )
		{
			return( _WKT_Read_Parts(Text, pShape) );
		}

		if( !Type.CmpNoCase(SG_OGIS_TYPE_STR_MultiPolygon) )
		{
			return( _WKT_Read_Polygon(Text, pShape) );
		}
		break;
	default:
		break;
	  
	}

	return( false );
}
Ejemplo n.º 3
0
//---------------------------------------------------------
int CSG_Grid::_Load_Native_Get_Key(CSG_File &Stream, CSG_String &Value)
{
	int			i;
	CSG_String	sLine;

	if( Stream.Read_Line(sLine) && (i = sLine.Find('=')) > 0 )
	{
		Value	= sLine.AfterFirst('=');
		Value.Trim();

		sLine.Remove(i);

		for(i=0; i<GRID_FILE_KEY_Count; i++)
		{
			CSG_String	s(gSG_Grid_File_Key_Names[i]);

			if( s.Find(sLine.Left(s.Length())) >= 0 )
			{
				return( i );
			}
		}
	}

	return( -1 );
}
//---------------------------------------------------------
bool CPointCloud_From_Text_File::On_Execute(void)
{
	//-----------------------------------------------------
	CSG_File	Stream;

	if( !Stream.Open(Parameters("FILE")->asString(), SG_FILE_R, false) )
	{
		Error_Set(_TL("Unable to open input file!"));

		return( false );
	}

	//-----------------------------------------------------
	int	xField	= Parameters("XFIELD")->asInt() - 1;
	int	yField	= Parameters("YFIELD")->asInt() - 1;
	int	zField	= Parameters("ZFIELD")->asInt() - 1;

	char	Separator;

	switch( Parameters("SEPARATOR")->asInt() )
    {
	default:	Separator	= '\t';	break;
    case  1:	Separator	=  ' ';	break;
    case  2:	Separator	=  ',';	break;
    }

    //-----------------------------------------------------
	CSG_String	sLine;
	CSG_Strings	Values;

	if( !Stream.Read_Line(sLine) )
	{
		Error_Set(_TL("Empty file!"));

		return( false );
	}

	if( Parameters("SKIP_HEADER")->asBool() )	// header contains field names
	{
		CSG_String_Tokenizer	tokValues(sLine, Separator);	// read each field name for later use

		while( tokValues.Has_More_Tokens() )
		{
			Values	+= tokValues.Get_Next_Token();
		}
	}
	else
    {
		Stream.Seek_Start();
    }

    //-----------------------------------------------------
    CSG_PointCloud	*pPoints	= SG_Create_PointCloud();
    pPoints->Set_Name(SG_File_Get_Name(Parameters("FILE")->asString(), false));
    Parameters("POINTS")->Set_Value(pPoints);

	CSG_Array_Int	Fields;

    //-----------------------------------------------------
    if( SG_UI_Get_Window_Main() )
    {
		CSG_Parameters	&Fields	= *Parameters("FIELDSPECS")->asParameters();

		int	nFields	= Fields.Get_Count() / 2;

		CSG_String	Names, Types;

		for(int iField=0; iField<nFields; iField++)
		{
			Names	+= CSG_String::Format("%s;", Fields(CSG_String::Format("NAME%03d", iField))->asString());
			Types	+= CSG_String::Format("%d;", Fields(CSG_String::Format("TYPE%03d", iField))->asInt   ());
		}

		Parameters("FIELDNAMES")->Set_Value(Names);
		Parameters("FIELDTYPES")->Set_Value(Types);
	}

	{
		TSG_Data_Type	Type	= SG_DATATYPE_Float;	// default

		CSG_String_Tokenizer	tokFields(Parameters("FIELDS"    )->asString(), ";");
		CSG_String_Tokenizer	tokTypes (Parameters("FIELDTYPES")->asString(), ";");
		CSG_String_Tokenizer	tokNames (Parameters("FIELDNAMES")->asString(), ";");

		while( tokFields.Has_More_Tokens() )
		{
			int	iField;

			if( !tokFields.Get_Next_Token().asInt(iField) || iField < 1 )
			{
				Error_Set(_TL("Error parsing attribute field index"));

				return( false );
			}

			Fields	+= iField - 1;

			CSG_String	Name;

			if( tokNames.Has_More_Tokens() )
			{
				Name	= tokNames.Get_Next_Token(); Name.Trim(true); Name.Trim(false);
			}

			if( Name.is_Empty() )
			{
				if( iField - 1 < Values.Get_Count() )
				{
					Name	= Values[iField - 1];
				}
				else
				{
					Name.Printf("FIELD%02d", iField);
				}
			}

			if( tokTypes.Has_More_Tokens() )
			{
				Get_Data_Type(Type, tokTypes.Get_Next_Token());
			}

			pPoints->Add_Field(Name, Type);
		}
	}

    //-----------------------------------------------------
	Process_Set_Text(_TL("Importing data ..."));

	int		nLines	= 0;
	sLong	Length	= Stream.Length();

	while( Stream.Read_Line(sLine) )
    {
		nLines++;

		if( pPoints->Get_Count() % 10000 == 0 && !Set_Progress((double)Stream.Tell(), (double)Length) )
		{
			return( true );	// user break
		}

	    //-------------------------------------------------
		CSG_String_Tokenizer	tokValues(sLine, Separator);

		Values.Clear();

		while( tokValues.Has_More_Tokens() )	// read every column in this line and fill vector
        {
			Values	+= tokValues.Get_Next_Token();
        }

	    //-------------------------------------------------
		double	x, y, z;

		if( xField >= Values.Get_Count() || !Values[xField].asDouble(x)
		||  yField >= Values.Get_Count() || !Values[yField].asDouble(y)
		||  zField >= Values.Get_Count() || !Values[zField].asDouble(z) )
		{
			Message_Fmt("\n%s: %s [%d]", _TL("Warning"), _TL("Skipping misformatted line"), nLines);

			continue;
		}

        pPoints->Add_Point(x, y, z);

	    //-------------------------------------------------
		for(int iAttribute=0; iAttribute<pPoints->Get_Attribute_Count(); iAttribute++)
		{
			if( Fields[iAttribute] >= Values.Get_Count() )
			{
				pPoints->Set_NoData(3 + iAttribute);
			}
			else switch( pPoints->Get_Attribute_Type(iAttribute) )
			{
			case SG_DATATYPE_String:
				pPoints->Set_Attribute(iAttribute, Values[Fields[iAttribute]]);
				break;

			default:
				{
					double	Value;

					if( Values[Fields[iAttribute]].asDouble(Value) )
					{
						pPoints->Set_Attribute(iAttribute, Value);
					}
					else
					{
						pPoints->Set_NoData(3 + iAttribute);
					}
				}
				break;
			}
		}
    }

    //-----------------------------------------------------
	DataObject_Set_Parameter(pPoints, "DISPLAY_VALUE_AGGREGATE", 3);	// highest z
	DataObject_Set_Parameter(pPoints, "COLORS_TYPE"            , 3);	// graduated colors
	DataObject_Set_Parameter(pPoints, "METRIC_ATTRIB"          , 2);	// z attrib
	DataObject_Set_Parameter(pPoints, "METRIC_ZRANGE", pPoints->Get_Minimum(2), pPoints->Get_Maximum(2));

	DataObject_Update(pPoints);

    //-----------------------------------------------------
	if( nLines > pPoints->Get_Count() )
	{
		Message_Add(" ", true);
		Message_Fmt("%s: %d %s", _TL("Warning"), nLines - pPoints->Get_Count(), _TL("invalid points have been skipped"));
	}

	Message_Add(" ", true);
	Message_Fmt("%d %s", pPoints->Get_Count(), _TL("points have been imported with success"));

	return( true );
}
Ejemplo n.º 5
0
bool CStreamNet::On_Execute(void)
{
	// Inputs and Output Strings
	CSG_String InputBasename = CSG_String("input");
	CSG_String OutputBasename = CSG_String("output");
	CSG_String FEL_INPUT_FileName, FEL_INPUT_FilePath;
	CSG_String FLOWD8_INPUT_FileName, FLOWD8_INPUT_FilePath;
	CSG_String AREAD8_INPUT_FileName, AREAD8_INPUT_FilePath;
	CSG_String SRC_INPUT_FileName, SRC_INPUT_FilePath;
	CSG_String ORD_OUTPUT_FileName, ORD_OUTPUT_FilePath, ORD_OUTPUT_Name;
	CSG_String W_OUTPUT_FileName, W_OUTPUT_FilePath, W_OUTPUT_Name;
	CSG_String NET_OUTPUT_FileName, NET_OUTPUT_FilePath, NET_OUTPUT_Name;
	CSG_String TREE_OUTPUT_FileName, TREE_OUTPUT_FilePath, TREE_OUTPUT_Name;
	CSG_String COORD_OUTPUT_FileName, COORD_OUTPUT_FilePath, COORD_OUTPUT_Name;
	CSG_String OUTLET_INPUT_FileName, OUTLET_INPUT_FilePath;

	// Data Objects
	CSG_Grid *FEL_INPUT_Grid, *FLOWD8_INPUT_Grid, *SRC_INPUT_Grid, *AREAD8_INPUT_Grid, *ORD_OUTPUT_Grid, *W_OUTPUT_Grid;
	CSG_Shapes *OUTLET_INPUT_Shapes, *NET_OUTPUT_Shapes;
	CSG_Table *TREE_OUTPUT_Table, *COORD_OUTPUT_Table;

	// Misc
	TSG_Data_Type Type;
	CSG_String GDALDriver, sCmd, TempDirPath, TauDEMBinDir, BinaryName, BinaryPath, LogFile;
	CSG_Projection Projection;
	CSG_GDAL_DataSet DataSet;
	CSG_OGR_DataSource	OGRDataSource;
	CSG_String OGRDriver = CSG_String("ESRI Shapefile");
	bool sw;
	int nproc;
	
	// Grab inputs
	FEL_INPUT_Grid = Parameters("FEL_INPUT")->asGrid();
	FLOWD8_INPUT_Grid = Parameters("FLOWD8_INPUT")->asGrid();
	SRC_INPUT_Grid = Parameters("SRC_INPUT")->asGrid();
	AREAD8_INPUT_Grid = Parameters("AREAD8_INPUT")->asGrid();
	ORD_OUTPUT_Grid = Parameters("ORD_OUTPUT")->asGrid();
	W_OUTPUT_Grid = Parameters("W_OUTPUT")->asGrid();
	nproc = Parameters("NPROC")->asInt();

	OUTLET_INPUT_Shapes = Parameters("OUTLET_INPUT")->asShapes();
	NET_OUTPUT_Shapes = Parameters("NET_OUTPUT")->asShapes();

	TREE_OUTPUT_Table = Parameters("TREE_OUTPUT")->asTable();
	COORD_OUTPUT_Table = Parameters("COORD_OUTPUT")->asTable();

	sw = Parameters("SW")->asBool();

	GDALDriver = CSG_String("GTiff");
	Get_Projection(Projection);
	Type = FEL_INPUT_Grid->Get_Type();
	
	//TempDirPath = SG_File_Get_Path_Absolute(CSG_String("taudem_tmp"));
	TempDirPath = Parameters("TEMP_DIR")->asFilePath()->asString();

	FEL_INPUT_FileName = InputBasename + CSG_String("fel");
	FEL_INPUT_FilePath = SG_File_Make_Path(TempDirPath, FEL_INPUT_FileName, CSG_String("tif")); 

	FLOWD8_INPUT_FileName = InputBasename + CSG_String("p");
	FLOWD8_INPUT_FilePath = SG_File_Make_Path(TempDirPath, FLOWD8_INPUT_FileName, CSG_String("tif"));

	SRC_INPUT_FileName = InputBasename + CSG_String("src");
	SRC_INPUT_FilePath = SG_File_Make_Path(TempDirPath, SRC_INPUT_FileName, CSG_String("tif"));

	AREAD8_INPUT_FileName = InputBasename + CSG_String("ad8");
	AREAD8_INPUT_FilePath = SG_File_Make_Path(TempDirPath, AREAD8_INPUT_FileName, CSG_String("tif"));

	ORD_OUTPUT_FileName = OutputBasename + CSG_String("ord");
	ORD_OUTPUT_FilePath = SG_File_Make_Path(TempDirPath, ORD_OUTPUT_FileName, CSG_String("tif"));
	ORD_OUTPUT_Name = CSG_String("NetworkOrder");

	W_OUTPUT_FileName = OutputBasename + CSG_String("w");
	W_OUTPUT_FilePath = SG_File_Make_Path(TempDirPath, W_OUTPUT_FileName, CSG_String("tif"));
	W_OUTPUT_Name = CSG_String("WatershedIDs");

	OUTLET_INPUT_FileName = InputBasename + CSG_String("o");
	OUTLET_INPUT_FilePath = SG_File_Make_Path(TempDirPath, OUTLET_INPUT_FileName, CSG_String("shp"));

	NET_OUTPUT_FileName = OutputBasename + CSG_String("net");
	NET_OUTPUT_FilePath = SG_File_Make_Path(TempDirPath, NET_OUTPUT_FileName, CSG_String("shp"));
	NET_OUTPUT_Name = CSG_String("Channel Network");

	TREE_OUTPUT_FileName = OutputBasename + CSG_String("tree");
	TREE_OUTPUT_FilePath = SG_File_Make_Path(TempDirPath, TREE_OUTPUT_FileName, CSG_String("dat"));
	TREE_OUTPUT_Name = CSG_String("Channel Network Tree");

	COORD_OUTPUT_FileName = OutputBasename + CSG_String("coord");
	COORD_OUTPUT_FilePath = SG_File_Make_Path(TempDirPath, COORD_OUTPUT_FileName, CSG_String("dat"));
	COORD_OUTPUT_Name = CSG_String("Channel Network Coords");

	LogFile = SG_File_Make_Path(TempDirPath, CSG_String("taudem_log.txt"));
	LogFile = SG_File_Get_Path_Absolute(LogFile);

	TauDEMBinDir = SG_File_Make_Path(CSG_String("bin"), CSG_String("TauDEM"));
	TauDEMBinDir = SG_File_Get_Path_Absolute(TauDEMBinDir);

	// options
	CSG_String OptionalFlags = CSG_String("");
	if (OUTLET_INPUT_Shapes != NULL)
	{
		OptionalFlags = CSG_String::Format(SG_T("-o \"%s\" "), OUTLET_INPUT_FilePath.c_str());
	}
	if (sw)
	{
		OptionalFlags = OptionalFlags + CSG_String::Format(SG_T("-sw"));
	}

	// exec commnad
	BinaryName = CSG_String("StreamNet"); // D8
	BinaryPath = SG_File_Make_Path(TauDEMBinDir, BinaryName);
	sCmd = CSG_String::Format(SG_T("\"mpiexec -n %d \"%s\" -fel \"%s\" -p \"%s\" -ad8 \"%s\" -src \"%s\" -ord \"%s\" -tree \"%s\" -coord \"%s\" -net \"%s\" -w \"%s\" %s >\"%s\" 2>&1\""), nproc, BinaryPath.c_str(), FEL_INPUT_FilePath.c_str(), FLOWD8_INPUT_FilePath.c_str(), AREAD8_INPUT_FilePath.c_str(), SRC_INPUT_FilePath.c_str(), ORD_OUTPUT_FilePath.c_str(), TREE_OUTPUT_FilePath.c_str(), COORD_OUTPUT_FilePath.c_str(), NET_OUTPUT_FilePath.c_str(), W_OUTPUT_FilePath.c_str(), OptionalFlags.c_str(), LogFile.c_str());

	// make sure temp dir exists
	if (!SG_Dir_Exists(TempDirPath))
	{
		if (!SG_Dir_Create(TempDirPath))
		{
			Error_Set(CSG_String::Format(SG_T("%s: '%s' "), _TL("Failed to create temp directory"), TempDirPath.c_str()));
		}
	}

	CSG_String FilePaths [10] = {FEL_INPUT_FilePath, FLOWD8_INPUT_FilePath, SRC_INPUT_FilePath, AREAD8_INPUT_FilePath, ORD_OUTPUT_FilePath, W_OUTPUT_FilePath, OUTLET_INPUT_FilePath, NET_OUTPUT_FilePath, TREE_OUTPUT_FilePath, COORD_OUTPUT_FilePath};
	for (int i = 0; i < 10; i++)
	{
		CSG_String FilePath = FilePaths[i];
		// Delete old file if exists
		if (SG_File_Exists(FilePath))
		{
			if (!SG_File_Delete(FilePath))
			{
				Error_Set(CSG_String::Format(SG_T("%s: '%s' "), _TL("Failed to delete existing file: "), FilePath.c_str()));
				return( false );
			}
		}
	}

	// SAVE TIFFS
	CSG_String TIFF_INPUT_FilePaths [4] = {FEL_INPUT_FilePath, FLOWD8_INPUT_FilePath, SRC_INPUT_FilePath, AREAD8_INPUT_FilePath};
	CSG_Grid* TIFF_INPUT_Grids [4] = {FEL_INPUT_Grid, FLOWD8_INPUT_Grid, SRC_INPUT_Grid, AREAD8_INPUT_Grid};
	for (int i = 0; i < 4; i++)
	{
		CSG_String FilePath = TIFF_INPUT_FilePaths[i];
		CSG_Grid* Grid = TIFF_INPUT_Grids[i];

		if( !DataSet.Open_Write(FilePath, GDALDriver, CSG_String(""), Type, 1, *Get_System(), Projection) )
		{
			Error_Set(CSG_String::Format(SG_T("%s: '%s' "), _TL("Failed to open file for writing: "), FilePath.c_str()));
			return( false );
		}
		DataSet.Write(0, Grid);
		if( !DataSet.Close() )
		{
			Error_Set(CSG_String::Format(SG_T("%s: '%s' "), _TL("Failed to close file after writing: "), FilePath.c_str()));
			return( false );
		}
	}

	if (OUTLET_INPUT_Shapes != NULL)
	{
		// save outlet shapefile
		CSG_String OGRDriver = CSG_String("ESRI Shapefile");
		if( !OGRDataSource.Create(OUTLET_INPUT_FilePath, OGRDriver) )
		{
			Error_Set(CSG_String::Format(SG_T("%s: '%s' "), _TL("Failed to open file for writing: "), OUTLET_INPUT_FilePath.c_str()));
			return( false );
		}
		OGRDataSource.Write(OUTLET_INPUT_Shapes, OGRDriver);
		OGRDataSource.Destroy();
	}
	

	// Run TauDEM StreamNet
	Message_Add(CSG_String("Executing ") + sCmd);
	if (system(sCmd.b_str()) != 0)	
	{
		Error_Set(CSG_String::Format(SG_T("Error executing '%s' see Execution log for details"), BinaryName.c_str()));
		// read log output
		CSG_File File;
		if (File.Open(LogFile, SG_FILE_R, false))
		{
			CSG_String Line;
			while (! File.is_EOF() && File.Read_Line(Line))
			{
				Message_Add(Line);
			}
			File.Close();
		} else 
		{
			Message_Add(CSG_String("Unable to open " + LogFile + CSG_String(" for reading")));
		}

		return( false );
	}

	// Load output tiffs

	if( !DataSet.Open_Read(ORD_OUTPUT_FilePath))
	{
		Error_Set(CSG_String::Format(SG_T("%s: '%s' "), _TL("Failed to open output file: "), ORD_OUTPUT_FilePath.c_str()));
		return( false );
	} 
	else
	{
		ORD_OUTPUT_Grid->Assign(DataSet.Read(0));
		ORD_OUTPUT_Grid->Set_Name(ORD_OUTPUT_Name);
		Parameters("ORD_OUTPUT")->Set_Value(ORD_OUTPUT_Grid);	
	}

	if( !DataSet.Open_Read(W_OUTPUT_FilePath))
	{
		Error_Set(CSG_String::Format(SG_T("%s: '%s' "), _TL("Failed to open output file: "), W_OUTPUT_FilePath.c_str()));
		return( false );
	} 
	else
	{
		W_OUTPUT_Grid->Assign(DataSet.Read(0));
		W_OUTPUT_Grid->Set_Name(W_OUTPUT_Name);
		Parameters("W_OUTPUT")->Set_Value(W_OUTPUT_Grid);

		CSG_Colors colors;
		DataObject_Get_Colors(SRC_INPUT_Grid, colors);
		DataObject_Set_Colors(ORD_OUTPUT_Grid, colors);
		DataObject_Update(ORD_OUTPUT_Grid, false);		
	}

	// load output shapefile
	if( !OGRDataSource.Create(NET_OUTPUT_FilePath) )
	{
		Error_Set(CSG_String::Format(SG_T("%s: '%s' "), _TL("Failed to open file for reading: "), NET_OUTPUT_FilePath.c_str()));
		return( false );
	} 
	NET_OUTPUT_Shapes->Assign(OGRDataSource.Read(0, 0));
	NET_OUTPUT_Shapes->Set_Name(NET_OUTPUT_Name);
	OGRDataSource.Destroy();
	
	// load table data

	if (!SG_File_Exists(COORD_OUTPUT_FilePath))
	{
		Error_Set(CSG_String::Format(SG_T("%s: '%s' "), _TL("Output file does not exist: "), COORD_OUTPUT_FilePath.c_str()));
		return false;
	} 
	else
	{
		COORD_OUTPUT_Table->Destroy();
		COORD_OUTPUT_Table->Set_Name(COORD_OUTPUT_Name);

		// create table fields
		COORD_OUTPUT_Table->Add_Field(SG_T("X"), SG_DATATYPE_Double);
		COORD_OUTPUT_Table->Add_Field(SG_T("Y"), SG_DATATYPE_Double);
		COORD_OUTPUT_Table->Add_Field(SG_T("Terminal Distance"), SG_DATATYPE_Double);
		COORD_OUTPUT_Table->Add_Field(SG_T("Elevation"), SG_DATATYPE_Double);
		COORD_OUTPUT_Table->Add_Field(SG_T("Contributing Area"), SG_DATATYPE_Double);

		// read table data
		CSG_File File;
		if (File.Open(COORD_OUTPUT_FilePath, SG_FILE_R, false))
		{
			CSG_String Line;
			// determine number of lines
			while (! File.is_EOF() && File.Read_Line(Line))
			{
				Line.Trim();
				if (Line.Length() == 0) 
				{
					break;
				} 
				else
				{
					CSG_Table_Record *Record = COORD_OUTPUT_Table->Add_Record();
					for (int i = 0; i < COORD_OUTPUT_Table->Get_Field_Count(); i++)
					{
						Record->Set_Value(i, Line.asDouble());
						Line = Line.AfterFirst('\t');
						Line.Trim();
					}
				}
			}
			File.Close();
		} else 
		{
			Message_Add(CSG_String("Unable to open " + COORD_OUTPUT_FilePath + CSG_String(" for reading")));
		}
	}

	if (!SG_File_Exists(TREE_OUTPUT_FilePath))
	{
		Error_Set(CSG_String::Format(SG_T("%s: '%s' "), _TL("Output file does not exist: "), TREE_OUTPUT_FilePath.c_str()));
		return false;
	} 
	else
	{
		TREE_OUTPUT_Table->Destroy();
		TREE_OUTPUT_Table->Set_Name(TREE_OUTPUT_Name);

		// create table fields
		TREE_OUTPUT_Table->Add_Field(SG_T("Link"), SG_DATATYPE_Int);
		TREE_OUTPUT_Table->Add_Field(SG_T("Start Point"), SG_DATATYPE_Int);
		TREE_OUTPUT_Table->Add_Field(SG_T("End Point"), SG_DATATYPE_Int);
		TREE_OUTPUT_Table->Add_Field(SG_T("Next (Downstream) Link"), SG_DATATYPE_Int);
		TREE_OUTPUT_Table->Add_Field(SG_T("First Previous (Upstream) Link"), SG_DATATYPE_Int);
		TREE_OUTPUT_Table->Add_Field(SG_T("Second Previous (Upstream) Link"), SG_DATATYPE_Int);
		TREE_OUTPUT_Table->Add_Field(SG_T("Strahler Order"), SG_DATATYPE_Int);
		TREE_OUTPUT_Table->Add_Field(SG_T("Monitoring Point ID"), SG_DATATYPE_Int);
		TREE_OUTPUT_Table->Add_Field(SG_T("Link Network Magnitude"), SG_DATATYPE_Int);

		// read table data
		CSG_File File;
		if (File.Open(TREE_OUTPUT_FilePath, SG_FILE_R, false))
		{
			CSG_String Line;
			// determine number of lines
			while (! File.is_EOF() && File.Read_Line(Line))
			{
				Line.Trim();
				if (Line.Length() == 0) 
				{
					break;
				} 
				else
				{
					CSG_Table_Record *Record = TREE_OUTPUT_Table->Add_Record();
					for (int i = 0; i < TREE_OUTPUT_Table->Get_Field_Count(); i++)
					{
						Record->Set_Value(i, Line.asDouble());
						Line = Line.AfterFirst('\t');
						Line.Trim();
					}
				}
			}
			File.Close();
		} else 
		{
			Message_Add(CSG_String("Unable to open " + TREE_OUTPUT_FilePath + CSG_String(" for reading")));
		}
	}


	return( true );

}