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/*
* Copyright (C) 2005-2022 Centre National d'Etudes Spatiales (CNES)
*
* This file is part of Orfeo Toolbox
*
* https://www.orfeo-toolbox.org/
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#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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