53 lines
1.4 KiB
C
53 lines
1.4 KiB
C
|
//
|
||
|
|
// EuclideanDistance.h
|
||
|
|
// FastDTW-x
|
||
|
|
//
|
||
|
|
// Created by Melo Yao on 12/2/13.
|
||
|
|
// Copyright (c) 2013 melo.yao. All rights reserved.
|
||
|
|
//
|
||
|
|
|
||
|
|
#ifndef __FastDTW_x__EuclideanDistance__
|
||
|
|
#define __FastDTW_x__EuclideanDistance__
|
||
|
|
|
||
|
|
#include "FDAssert.h"
|
||
|
|
#include "FDMath.h"
|
||
|
|
#include <cmath>
|
||
|
|
#include "TimeSeriesPoint.h"
|
||
|
|
|
||
|
|
FD_NS_START
|
||
|
|
class EuclideanDistance
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
EuclideanDistance()
|
||
|
|
{
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
template <typename ValueType,JInt nDimension>
|
||
|
|
ValueType calcDistance(const MeasurementVector<ValueType, nDimension>& v1, const MeasurementVector<ValueType, nDimension>& v2) const
|
||
|
|
{
|
||
|
|
FDASSERT0(v1.size()==v2.size(),"ERROR: cannot calculate the distance between vectors of different sizes.");
|
||
|
|
double sqSum = 0.0;
|
||
|
|
size_t size = v1.size();
|
||
|
|
for (JInt i = 0; i<size; ++i) {
|
||
|
|
sqSum+= pow((double)(v1[i]-v2[i]), 2.0);
|
||
|
|
}
|
||
|
|
return (ValueType)sqrt(sqSum);
|
||
|
|
}
|
||
|
|
|
||
|
|
template <typename ValueType>
|
||
|
|
ValueType calcDistance(const std::vector<ValueType>& v1, const std::vector<ValueType>& v2) const
|
||
|
|
{
|
||
|
|
FDASSERT0(v1.size()==v2.size(),"ERROR: cannot calculate the distance between vectors of different sizes.");
|
||
|
|
double sqSum = 0.0;
|
||
|
|
size_t size = v1.size();
|
||
|
|
for (size_t i = 0; i<size; ++i) {
|
||
|
|
sqSum+= pow((double)(v1[i]-v2[i]), 2.0);
|
||
|
|
}
|
||
|
|
return (ValueType)sqrt(sqSum);
|
||
|
|
}
|
||
|
|
};
|
||
|
|
FD_NS_END
|
||
|
|
|
||
|
|
#endif /* defined(__FastDTW_x__EuclideanDistance__) */
|