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/*=========================================================================
Program: ORFEO Toolbox
Language: C++
Date: $Date$
Version: $Revision$
Copyright (c) Centre National d'Etudes Spatiales. All rights reserved.
See OTBCopyright.txt for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notices for more information.
=========================================================================*/
#include "itkMacro.h"
#include "otbDecisionTree.h"
enum WheatTypes { WinterWheat, SummerWheat };
int otbDecisionTreeBuild(int itkNotUsed(argc), char* itkNotUsed(argv) [])
{
/** We build the following decision tree
-------------
( DOY LT 100 )
-------------
Yes -/ -- No
--/ \--
------------- -------------
( NDVI GT 0.7 ) ( NDVI GT 0.7 )
------------- -------------
/ -- /\
Yes -/ \- No Yes-/ \- No
-/ \ -/ \-
WW SW SW WW
*/
typedef bool AttributeValueType;
typedef otb::DecisionTree< AttributeValueType, WheatTypes > DecisionTreeType;
DecisionTreeType::Pointer decisionTree = DecisionTreeType::New();
DecisionTreeType::Pointer doyLT100Tree = DecisionTreeType::New();
DecisionTreeType::Pointer doyGT100Tree = DecisionTreeType::New();
decisionTree->SetAttribute( 0 );
decisionTree->AddBranch( false, doyGT100Tree );
decisionTree->AddBranch( true, doyLT100Tree );
doyLT100Tree->SetAttribute( 1 );
doyLT100Tree->AddBranch( false, SummerWheat );
doyLT100Tree->AddBranch( true, WinterWheat );
doyGT100Tree->SetAttribute( 1 );
doyGT100Tree->AddBranch( false, WinterWheat );
doyGT100Tree->AddBranch( true, SummerWheat );
// Build some examples for testing
DecisionTreeType::ExampleType ww_in_summer; //(DoY<100), (NDVI>0.7)
ww_in_summer.push_back(false);
ww_in_summer.push_back(false);
DecisionTreeType::ExampleType ww_in_winter;
ww_in_winter.push_back(true);
ww_in_winter.push_back(true);
DecisionTreeType::ExampleType sw_in_winter;
sw_in_winter.push_back(true);
sw_in_winter.push_back(false);
DecisionTreeType::ExampleType sw_in_summer;
sw_in_summer.push_back(false);
sw_in_summer.push_back(true);
std::cout << "ww_in_summer" << std::endl;
if( decisionTree->Decide( ww_in_summer ) != WinterWheat )
{
std::cerr << "ww_in_summer yields " << decisionTree->Decide( ww_in_summer ) << std::endl;
return EXIT_FAILURE;
}
std::cout << "sw_in_winter" << std::endl;
if( decisionTree->Decide( sw_in_winter ) != SummerWheat )
{
std::cerr << "sw_in_winter yields " << decisionTree->Decide( sw_in_winter ) << std::endl;
return EXIT_FAILURE;
}
std::cout << "sw_in_summer" << std::endl;
if( decisionTree->Decide( sw_in_summer ) != SummerWheat )
{
std::cerr << "sw_in_summer yields " << decisionTree->Decide( sw_in_summer ) << std::endl;
return EXIT_FAILURE;
}
std::cout << "ww_in_winter" << std::endl;
if( decisionTree->Decide( ww_in_winter ) != WinterWheat )
{
std::cerr << "ww_in_winter yields " << decisionTree->Decide( ww_in_winter ) << std::endl;
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}
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