grid_value_reclassify.cpp

这是一个GPS相关的程序

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//                                                       //
//                         SAGA                          //
//                                                       //
//      System for Automated Geoscientific Analyses      //
//                                                       //
//                    Module Library:                    //
//                      Grid_Tools                       //
//                                                       //
//-------------------------------------------------------//
//                                                       //
//               Grid_Value_Reclassify.cpp               //
//                                                       //
//                 Copyright (C) 2005 by                 //
//                    Volker Wichmann                    //
//                                                       //
//-------------------------------------------------------//
//                                                       //
// This file is part of 'SAGA - System for Automated     //
// Geoscientific Analyses'. SAGA is free software; you   //
// can redistribute it and/or modify it under the terms  //
// of the GNU General Public License as published by the //
// Free Software Foundation; version 2 of the License.   //
//                                                       //
// SAGA is distributed in the hope that it will be       //
// useful, but WITHOUT ANY WARRANTY; without even the    //
// implied warranty of MERCHANTABILITY or FITNESS FOR A  //
// PARTICULAR PURPOSE. See the GNU General Public        //
// License for more details.                             //
//                                                       //
// You should have received a copy of the GNU General    //
// Public License along with this program; if not,       //
// write to the Free Software Foundation, Inc.,          //
// 59 Temple Place - Suite 330, Boston, MA 02111-1307,   //
// USA.                                                  //
//                                                       //
//-------------------------------------------------------//
//                                                       //
//    e-mail:     [e-mail]       //
//                                                       //
//    contact:    Volker Wichmann                        //
//                Research Associate                     //
//                Chair of Physical Geography		     //
//				  KU Eichstaett-Ingolstadt				 //
//                Ostenstr. 18                           //
//                85072 Eichstaett                       //
//                Germany                                //
//                                                       //
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//---------------------------------------------------------


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//---------------------------------------------------------
#include "Grid_Value_Reclassify.h"


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//														 //
//				Construction/Destruction				 //
//														 //
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//---------------------------------------------------------
CGrid_Value_Reclassify::CGrid_Value_Reclassify(void)
{
	CSG_Parameter	*pNode;

	//-----------------------------------------------------
	Set_Name(_TL("Reclassify Grid Values"));

	Set_Author(_TL("Copyrights (c) 2005 by Volker Wichmann"));

	Set_Description	(_TW(
		"The module can be used to reclassify the values of a grid. It provides three different options: (a) "
		"reclassification of single values, (b) reclassification of a range of values and (c) reclassification "
		"of value ranges specified in a lookup table. In addition to theses methods, two special cases "
		"(No-Data values and values not included in the reclassification setup) are supported. In mode (a) "
		"and (b) the 'No-Data option' is evaluated before the method settings, in mode (c) the option is "
		"evaluated only if the No-Data value ins't included in the lookup table. The 'other values' option "
		"is always evaluated after checking the method settings. ")
	);


	//-----------------------------------------------------
	Parameters.Add_Grid(
		NULL	, "INPUT"		,_TL("Grid"),
		_TL("Grid to reclassify"),
		PARAMETER_INPUT
	);

	Parameters.Add_Grid(
		NULL	, "RESULT"		, _TL("Reclassified Grid"),
		_TL("Reclassifed grid."),
		PARAMETER_OUTPUT
	);

	Parameters.Add_Choice(
		NULL	, "METHOD"		, _TL("Method"),
		_TL("Select the desired method: 1. a single value or a range defined by a single value is reclassified, 2. a range of values is reclassified, 3. the lookup table is used to reclassify the grid."),
		_TL("single|range|simple table|user supplied table|"), 0
	);


	//-----------------------------------------------------
	pNode	= Parameters.Add_Node(
		NULL	, "SINGLE", _TL("Method single"),
		_TL("Parameter settings for method single.")
	);

	Parameters.Add_Value(
		pNode	, "OLD"			, _TL("old value"),
		_TL("Value to reclassify."),
		PARAMETER_TYPE_Double, 0
	);

	Parameters.Add_Value(
		pNode	, "NEW"			, _TL("new value"),
		_TL("New value."),
		PARAMETER_TYPE_Double, 1
	);

	Parameters.Add_Choice(
		pNode	, "SOPERATOR"	, _TL("operator"),
		_TL("Select the desired operator (<;.;=; >;.); it is possible to define a range above or below the old value."),

		CSG_String::Format(SG_T("%s|%s|%s|%s|%s|"),
			_TL("="),
			_TL("<"),
			_TL("<="),
			_TL(">="),
			_TL(">")
		), 0
	);

	//-----------------------------------------------------
	pNode	= Parameters.Add_Node(
		NULL	, "RANGE"		, _TL("Method range"),
		_TL("Parameter settings for method range.")
	);

	Parameters.Add_Value(
		pNode	, "MIN"			, _TL("minimum value"),
		_TL("Minimum value of the range to be reclassified."),
		PARAMETER_TYPE_Double, 0
	);

	Parameters.Add_Value(
		pNode	, "MAX"			, _TL("maximum value"),
		_TL("Maximum value of the range to be reclassified."),
		PARAMETER_TYPE_Double, 10
	);

	Parameters.Add_Value(
		pNode	, "RNEW"		, _TL("new value"),
		_TL("new value"),
		PARAMETER_TYPE_Double, 5
	);

	Parameters.Add_Choice(
		pNode	, "ROPERATOR"	, _TL("operator"),
		_TL("Select operator: eg. min < value < max."),

		CSG_String::Format(SG_T("%s|%s|"),
			_TL("<="),
			_TL("<")
		), 0
	);

	//-----------------------------------------------------
	pNode	= Parameters.Add_Node(
		NULL	, "TABLE"		, _TL("Method simple table"),
		_TL("Parameter settings for method simple table.")
	);

	Parameters.Add_FixedTable(
		pNode	, "RETAB"		, _TL("Lookup Table"),
		_TL("Lookup table used in method \"table\"")
	);

	Parameters.Add_Choice(
		pNode	, "TOPERATOR"	, _TL("operator"),
		_TL("Select the desired operator (min < value < max; min . value < max; min .value . max; min < value . max)."),

		CSG_String::Format(SG_T("%s|%s|%s|%s|"),
			_TL("min <= value < max"),
			_TL("min <= value <= max"),
			_TL("min < value <= max"),
			_TL("min < value < max")
		), 0
	);

	//-----------------------------------------------------
	pNode	= Parameters.Add_Node(
		NULL	, "TABLE_2"		, _TL("Method user supplied table"),
		_TL("Parameter settings for method user supplied table.")
	);

	pNode	= Parameters.Add_Table(
		pNode	, "RETAB_2"		, _TL("Lookup Table"),
		_TL("Lookup table used in method \"user supplied table\""),
		PARAMETER_INPUT_OPTIONAL
	);

	Parameters.Add_Table_Field(
		pNode	, "F_MIN"		, _TL("minimum value"),
		_TL("")
	);

	Parameters.Add_Table_Field(
		pNode	, "F_MAX"		, _TL("maximum value"),
		_TL("")
	);

	Parameters.Add_Table_Field(
		pNode	, "F_CODE"		, _TL("new value"),
		_TL("")
	);

	//-----------------------------------------------------
	pNode	= Parameters.Add_Node(
		NULL, "OPTIONS"			, _TL("Special cases"),
		_TL("Parameter settings for No-Data and all other values.")
	);

	Parameters.Add_Value(
		pNode	, "NODATAOPT"	, _TL("no data values"),
		_TL("Use this option to reclassify No-Data values independently of the method settings."),
		PARAMETER_TYPE_Bool, false
	);

	Parameters.Add_Value(
		pNode	, "NODATA"		, _TL("no data values >> value"),
		_TL("new value"),
		PARAMETER_TYPE_Double, 0
	);

	Parameters.Add_Value(
		pNode	, "OTHEROPT"	, _TL("other values"),
		_TL("Use this option to reclassify all other values that are not specified in the options above."),
		PARAMETER_TYPE_Bool, false
	);

	Parameters.Add_Value(
		pNode	, "OTHERS"		, _TL("other values >> value"),
		_TL("new value"),
		PARAMETER_TYPE_Double, 0
	);

	//-----------------------------------------------------
	CSG_Table			*pLookup;
	CSG_Table_Record	*pRecord;

	pLookup	= Parameters("RETAB")->asTable();

	pLookup->Add_Field(_TL("minimum")	, TABLE_FIELDTYPE_Double);
	pLookup->Add_Field(_TL("maximum")	, TABLE_FIELDTYPE_Double);
	pLookup->Add_Field(_TL("new")		, TABLE_FIELDTYPE_Double);

	pRecord	= pLookup->Add_Record();	pRecord->Set_Value(0,  0.0);	pRecord->Set_Value(1, 10.0);	pRecord->Set_Value(2, 1.0);
	pRecord	= pLookup->Add_Record();	pRecord->Set_Value(0, 10.0);	pRecord->Set_Value(1, 20.0);	pRecord->Set_Value(2, 2.0);
}

//---------------------------------------------------------
CGrid_Value_Reclassify::~CGrid_Value_Reclassify(void)
{}


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//														 //
//														 //
//														 //
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//---------------------------------------------------------
bool CGrid_Value_Reclassify::On_Execute(void)
{
	int		method;

	pInput		= Parameters("INPUT")->asGrid();
	pResult		= Parameters("RESULT")->asGrid();
	method		= Parameters("METHOD")->asInt();

	//-----------------------------------------------------
	switch( method )
	{
	case 0:	return( ReclassSingle() );
	case 1:	return( ReclassRange() );
	case 2:	return( ReclassTable(false) );
	case 3:	return( ReclassTable(true) );
	}

	//-----------------------------------------------------
	return( false );
}


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