#include "stdafx.h"
#include "Math.h"
#include "Normalization.h"
using namespace std; 

Normalization::Normalization() {
	timeSeriaShiftValue = 0;
	maxTimePoint = 0;
}

vector<double> Normalization::shift(vector<double> timeSeria){
	double timeSeriaShiftValue = timeSeria[0];
	for (int i = 0; i < timeSeria.size(); i++){
		if (timeSeria[i] < timeSeriaShiftValue && timeSeria[i] < 0){
			timeSeriaShiftValue = timeSeria[i];
		}
	}
	
	if (timeSeriaShiftValue < 0){
		timeSeriaShiftValue = fabs(timeSeriaShiftValue);
		for (int i = 0; i < timeSeria.size(); i++){
			timeSeria[i] += timeSeriaShiftValue;
		}
	}
	return timeSeria;
}
vector<double> Normalization::deShift(vector<double> timeSeria){	
	
	if (timeSeriaShiftValue < 0){		
		for (int i = 0; i < timeSeria.size(); i++){
			timeSeria[i] -= timeSeriaShiftValue;
		}
	}
	return timeSeria;
}

vector<double> Normalization::normalizeTimeSeria(vector<double> timeSeria){
	shift(timeSeria);
	maxTimePoint = timeSeria[0];
	for (int i = 0; i < timeSeria.size(); i++){
		if (timeSeria[i] > maxTimePoint)
			maxTimePoint = timeSeria[i];
	}
	for (int i = 0; i < timeSeria.size(); i++){
		timeSeria[i] /= maxTimePoint;
	}
	return timeSeria;
}

vector<double> Normalization::deNormalizeTimeSeria(vector<double> timeSeria){
	//shift(timeSeria);
	for (int i = 0; i < timeSeria.size(); i++){
		timeSeria[i] *= maxTimePoint;
	}
	timeSeria = deShift(timeSeria);
	return timeSeria;
}