/usr/include/OTB-6.4/otbEuclideanDistanceMetricWithMissingValuePow2.txx is in libotb-dev 6.4.0+dfsg-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* Copyright (C) 2005-2017 Centre National d'Etudes Spatiales (CNES)
* Copyright (C) 2007-2012 Institut Mines Telecom / Telecom Bretagne
*
* 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.
*/
#ifndef otbEuclideanDistanceMetricWithMissingValuePow2_txx
#define otbEuclideanDistanceMetricWithMissingValuePow2_txx
#include "otbEuclideanDistanceMetricWithMissingValuePow2.h"
#include "itkMeasurementVectorTraits.h"
namespace otb {
namespace Statistics {
template<class TVector>
inline double
EuclideanDistanceMetricWithMissingValuePow2<TVector>
::Evaluate(const TVector& x1, const TVector& x2) const
{
if (itk::NumericTraits<TVector>::GetLength(x1) !=
itk::NumericTraits<TVector>::GetLength(x2))
{
itkExceptionMacro(<< "Vector lengths must be equal.");
}
double temp, distance = itk::NumericTraits<double>::Zero;
for (unsigned int i = 0; i < x1.Size(); ++i)
{
if (!IsMissingValue(x1[i]) && !IsMissingValue(x2[i]))
{
temp = x1[i] - x2[i];
distance += temp * temp;
}
}
return distance;
}
template<class TVector>
inline double
EuclideanDistanceMetricWithMissingValuePow2<TVector>
::Evaluate(const TVector& x) const
{
MeasurementVectorSizeType
measurementVectorSize = this->GetMeasurementVectorSize();
if (measurementVectorSize == 0)
{
itkExceptionMacro(<< "Please set the MeasurementVectorSize first");
}
itk::Statistics::MeasurementVectorTraits::Assert(this->GetOrigin(), measurementVectorSize,
"EuclideanDistanceMetric::Evaluate Origin and input vector have different lengths");
double temp, distance = itk::NumericTraits<double>::Zero;
for (unsigned int i = 0; i < measurementVectorSize; ++i)
{
if (!IsMissingValue(this->GetOrigin()[i]) && !IsMissingValue(x[i]))
{
temp = this->GetOrigin()[i] - x[i];
distance += temp * temp;
}
}
return distance;
}
template<class TVector>
inline double
EuclideanDistanceMetricWithMissingValuePow2<TVector>
::Evaluate(const ValueType& a, const ValueType& b) const
{
// FIXME throw NaN exception ??
if (IsMissingValue(a) || IsMissingValue(b)) return 0.0;
double temp = a - b;
return temp * temp;
}
template<class TVector>
/*static */
bool
EuclideanDistanceMetricWithMissingValuePow2<TVector>
::IsMissingValue(const ValueType& v)
{
return static_cast<bool>(vnl_math_isnan(static_cast<double>(v)));
}
template<class TVector>
/* static */
void
EuclideanDistanceMetricWithMissingValuePow2<TVector>
::SetToMissingValue(ValueType& v)
{
v = std::numeric_limits<ValueType>::signaling_NaN();
}
} // end namespace statistics
} // end namespace otb
#endif
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