//+------------------------------------------------------------------+
//| SmoothedAdaptiveMomentum.mq4 |
//| |
//| Smoothed Adaptive Momentum |
//| |
//| Algorithm taken from book |
//| "Cybernetics Analysis for Stock and Futures" |
//| by John F. Ehlers |
//| |
//| contact@mqlsoft.com |
//| http://www.mqlsoft.com/ |
//+------------------------------------------------------------------+
#property copyright "Coded by Witold Wozniak"
#property link "www.mqlsoft.com"
#property indicator_separate_window
#property indicator_buffers 2
#property indicator_color1 Red
#property indicator_color2 Blue
#property indicator_level1 0
double Momentum[];
extern double Alpha = 0.07;
extern int Cutoff = 8;
int buffers = 0;
int drawBegin = 0;
double tempReal, rad2Deg, deg2Rad;
int init() {
drawBegin = 60;
initBuffer(Momentum, "Momentum", DRAW_LINE);
IndicatorBuffers(buffers);
IndicatorShortName("Smoothed Adaptive Momentum [" + DoubleToStr(Alpha, 2) + ", " + Cutoff + "]");
tempReal = MathArctan(1.0);
rad2Deg = 45.0 / tempReal;
deg2Rad = 1.0 / rad2Deg;
return (0);
}
int start() {
if (Bars <= drawBegin) return (0);
int countedBars = IndicatorCounted();
if (countedBars < 0) return (-1);
if (countedBars > 0) countedBars--;
int s, limit = Bars - countedBars - 1;
for (s = limit; s >= 0; s--) {
double period = iCustom(0, 0, "CyclePeriod", Alpha, 0, s);
int intPeriod = MathFloor(period);
double Value1 = P(s) - P(s + intPeriod - 1);
double a1 = MathExp(-3.1415926535 / Cutoff);
double b1 = 2 * a1 * MathSin(deg2Rad * 1.738 * 180 / Cutoff);
double c1 = a1 * a1;
double coef2 = b1 + c1;
double coef3 = -(c1 + b1 * c1);
double coef4 = c1 * c1;
double coef1 = 1.0 - coef2 - coef3 - coef4;
Momentum[s] = coef1 * Value1 + coef2 * Momentum[s + 1] +
coef3 * Momentum[s + 2] + coef4 * Momentum[s + 3];
if (s > Bars - 8) {
Momentum[s] = Value1;
}
}
return (0);
}
double P(int index) {
return ((High[index] + Low[index]) / 2.0);
}
void initBuffer(double array[], string label = "", int type = DRAW_NONE, int arrow = 0, int style = EMPTY, int width = EMPTY, color clr = CLR_NONE) {
SetIndexBuffer(buffers, array);
SetIndexLabel(buffers, label);
SetIndexEmptyValue(buffers, EMPTY_VALUE);
SetIndexDrawBegin(buffers, drawBegin);
SetIndexShift(buffers, 0);
SetIndexStyle(buffers, type, style, width);
SetIndexArrow(buffers, arrow);
buffers++;
}
Sample
Analysis
Market Information Used:
Series array that contains the highest prices of each bar
Series array that contains the lowest prices of each bar
Indicator Curves created:
Implements a curve of type type
Indicators Used:
Custom Indicators Used:
CyclePeriod
Order Management characteristics:
Other Features: