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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.
*
*=========================================================================*/
#ifndef itkMembershipSample_hxx
#define itkMembershipSample_hxx
namespace itk
{
namespace Statistics
{
template <typename TSample>
MembershipSample<TSample>::MembershipSample()
{
this->m_NumberOfClasses = 0;
}
template <typename TSample>
void
MembershipSample<TSample>::SetNumberOfClasses(unsigned int numberOfClasses)
{
m_NumberOfClasses = numberOfClasses;
m_ClassSamples.resize(m_NumberOfClasses);
for (unsigned int i = 0; i < m_NumberOfClasses; ++i)
{
m_ClassSamples[i] = ClassSampleType::New();
(m_ClassSamples[i])->SetSample(this->GetSample());
}
}
template <typename TSample>
inline void
MembershipSample<TSample>::AddInstance(const ClassLabelType & classLabel, const InstanceIdentifier & id)
{
m_ClassLabelHolder[id] = classLabel;
int classIndex = this->GetInternalClassLabel(classLabel);
if (classIndex == -1)
{
m_UniqueClassLabels.push_back(classLabel);
classIndex = static_cast<int>(m_UniqueClassLabels.size()) - 1;
}
(m_ClassSamples[classIndex])->AddInstance(id);
}
template <typename TSample>
inline unsigned int
MembershipSample<TSample>::GetClassLabel(const InstanceIdentifier & id) const
{
return (*(m_ClassLabelHolder.find(id))).second;
}
template <typename TSample>
inline int
MembershipSample<TSample>::GetInternalClassLabel(const ClassLabelType classLabel) const
{
for (unsigned int i = 0; i < m_UniqueClassLabels.size(); ++i)
{
if (m_UniqueClassLabels[i] == classLabel)
{
return i;
}
}
return -1;
}
template <typename TSample>
auto
MembershipSample<TSample>::GetClassLabelHolder() const -> const ClassLabelHolderType
{
return m_ClassLabelHolder;
}
template <typename TSample>
auto
MembershipSample<TSample>::GetClassSample(const ClassLabelType & classLabel) const -> const ClassSampleType *
{
int classIndex = this->GetInternalClassLabel(classLabel);
if (classIndex < 0)
{
return nullptr;
}
return m_ClassSamples[classIndex];
}
template <typename TSample>
inline const typename MembershipSample<TSample>::MeasurementVectorType &
MembershipSample<TSample>::GetMeasurementVector(const InstanceIdentifier & id) const
{
return m_Sample->GetMeasurementVector(id);
}
template <typename TSample>
inline auto
MembershipSample<TSample>::GetMeasurement(const InstanceIdentifier & id, const unsigned int dimension)
-> MeasurementType
{
return m_Sample->GetMeasurement(id, dimension);
}
template <typename TSample>
inline auto
MembershipSample<TSample>::GetFrequency(const InstanceIdentifier & id) const -> AbsoluteFrequencyType
{
return m_Sample->GetFrequency(id);
}
template <typename TSample>
inline auto
MembershipSample<TSample>::GetTotalFrequency() const -> TotalAbsoluteFrequencyType
{
return m_Sample->GetTotalFrequency();
}
template <typename TSample>
void
MembershipSample<TSample>::Graft(const DataObject * thatObject)
{
this->Superclass::Graft(thatObject);
// Most of what follows is really a deep copy, rather than grafting of
// output. Wish it were managed by pointers to bulk data. Sigh !
const auto * thatConst = dynamic_cast<const Self *>(thatObject);
if (thatConst)
{
auto * that = const_cast<Self *>(thatConst);
this->m_UniqueClassLabels = that->m_UniqueClassLabels;
this->m_ClassLabelHolder = that->m_ClassLabelHolder;
this->m_ClassSamples = that->m_ClassSamples;
this->m_Sample = that->m_Sample;
this->m_NumberOfClasses = that->m_NumberOfClasses;
}
}
template <typename TSample>
void
MembershipSample<TSample>::PrintSelf(std::ostream & os, Indent indent) const
{
Superclass::PrintSelf(os, indent);
os << indent << "Sample: " << m_Sample.GetPointer() << std::endl;
os << indent << "NumberOfClasses: " << this->GetNumberOfClasses() << std::endl;
}
} // end of namespace Statistics
} // end of namespace itk
#endif
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