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/*=========================================================================
*
* Copyright NumFOCUS
*
* 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
*
* https://www.apache.org/licenses/LICENSE-2.0.txt
*
* 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 <iostream>
#include "itkSample.h"
#include "itkObjectFactory.h"
#include "itkMath.h"
namespace itk
{
namespace Statistics
{
namespace SampleTest
{
template <typename TMeasurementVector>
class MySample : public Sample<TMeasurementVector>
{
public:
/** Standard class type alias. */
using Self = MySample;
using Superclass = Sample<TMeasurementVector>;
using Pointer = SmartPointer<Self>;
using ConstPointer = SmartPointer<const Self>;
/** \see LightObject::GetNameOfClass() */
itkOverrideGetNameOfClassMacro(MySample);
/** Method for creation through the object factory. */
itkNewMacro(Self);
using typename Superclass::MeasurementVectorType;
using typename Superclass::TotalAbsoluteFrequencyType;
using typename Superclass::AbsoluteFrequencyType;
using typename Superclass::InstanceIdentifier;
/** Get the size of the sample (number of measurements) */
InstanceIdentifier
Size() const override
{
return static_cast<InstanceIdentifier>(m_Values.size());
}
/** Get the measurement associated with a particular
* InstanceIdentifier. */
const MeasurementVectorType &
GetMeasurementVector(InstanceIdentifier id) const override
{
return m_Values[id];
}
/** Get the frequency of a measurement specified by instance
* identifier. */
AbsoluteFrequencyType
GetFrequency(InstanceIdentifier id) const override
{
return m_Frequencies[id];
}
/** Get the total frequency of the sample. */
TotalAbsoluteFrequencyType
GetTotalFrequency() const override
{
TotalAbsoluteFrequencyType sum{};
auto itr = m_Frequencies.begin();
while (itr != m_Frequencies.end())
{
sum += *itr;
++itr;
}
return sum;
}
void
PrintSelf(std::ostream & os, Indent indent) const override
{
Superclass::PrintSelf(os, indent);
os << indent << m_Values.size() << std::endl;
os << indent << m_Frequencies.size() << std::endl;
}
void
AddMeasurementVector(const MeasurementVectorType & measure, AbsoluteFrequencyType frequency)
{
m_Values.push_back(measure);
m_Frequencies.push_back(frequency);
}
private:
std::vector<TMeasurementVector> m_Values;
std::vector<AbsoluteFrequencyType> m_Frequencies;
};
} // namespace SampleTest
} // namespace Statistics
} // namespace itk
int
itkSampleTest(int, char *[])
{
constexpr unsigned int MeasurementVectorSize = 17;
using MeasurementVectorType = itk::FixedArray<float, MeasurementVectorSize>;
using SampleType = itk::Statistics::SampleTest::MySample<MeasurementVectorType>;
auto sample = SampleType::New();
std::cout << sample->GetNameOfClass() << std::endl;
std::cout << sample->SampleType::Superclass::GetNameOfClass() << std::endl;
sample->Print(std::cout);
sample->SetMeasurementVectorSize(MeasurementVectorSize); // for code coverage
if (sample->GetMeasurementVectorSize() != MeasurementVectorSize)
{
std::cerr << "GetMeasurementVectorSize() Failed !" << std::endl;
return EXIT_FAILURE;
}
std::cout << sample->Size() << std::endl;
MeasurementVectorType measure;
for (unsigned int i = 0; i < MeasurementVectorSize; ++i)
{
measure[i] = 29 * i * i;
}
using AbsoluteFrequencyType = SampleType::AbsoluteFrequencyType;
AbsoluteFrequencyType frequency = 17;
sample->AddMeasurementVector(measure, frequency);
MeasurementVectorType measureBack = sample->GetMeasurementVector(0);
AbsoluteFrequencyType frequencyBack = sample->GetFrequency(0);
if (frequencyBack != frequency)
{
std::cerr << "Error in GetFrequency()" << std::endl;
return EXIT_FAILURE;
}
for (unsigned int j = 0; j < MeasurementVectorSize; ++j)
{
if (itk::Math::NotExactlyEquals(measureBack[j], measure[j]))
{
std::cerr << "Error in Set/Get MeasurementVector()" << std::endl;
return EXIT_FAILURE;
}
}
std::cout << sample->GetTotalFrequency() << std::endl;
// Test if an exception will be thrown if we try to resize the measurement vector
// size
try
{
sample->SetMeasurementVectorSize(MeasurementVectorSize + 1);
std::cerr
<< "Exception should have been thrown since we are trying to resize non-resizeable measurement vector type "
<< std::endl;
return EXIT_FAILURE;
}
catch (const itk::ExceptionObject & excp)
{
std::cerr << "Caughted expected exception: " << excp << std::endl;
}
return EXIT_SUCCESS;
}
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