new indicator

I post the source of an indicator (MQL4) which is a modification from an other.

I expect this will be usefull. I use it with the code

manew=iCustom(NULL,PERIOD_M15,"#MAMAnew",0,0);

it is usefull to determine when the indicator change of signs. When the value is negative, the ask/bid is going down, ...

//+------------------------------------------------------------------+

//| MAMAnew.mq4 |

//+------------------------------------------------------------------+

//Mesa Adaptive Moving Average", Stocks and Commodities Magazine, August 2001.

//

//Ehlers, Rocket sciences for trader, John Wiley & sons, 2001, p177...

//modification: klod (claudeh5)

//====================================================================

#property indicator_separate_window

#property indicator_buffers 1

#property indicator_color1 Aqua

#property indicator_color2 Chocolate

//---- input parameters

double FastLimit=0.5;

double SlowLimit=0.05;

//---- buffers

double FABuffer[];

//double MABuffer[];

//+------------------------------------------------------------------+

//| Custom indicator initialization function |

//+------------------------------------------------------------------+

int init()

{

string short_name;

//---- indicator line

SetIndexStyle(0,DRAW_LINE);

SetIndexStyle(1,DRAW_LINE);

SetIndexBuffer(0,FABuffer);

// SetIndexBuffer(1,MABuffer);

//---- name for DataWindow and indicator subwindow label

short_name="#MAMAnew";

IndicatorShortName(short_name);

SetIndexLabel(0,"#FAMA");

// SetIndexLabel(1,"#MAMA");

//----

SetIndexDrawBegin(0,50);

// SetIndexDrawBegin(1,50);

//----

return(0);

}

//+------------------------------------------------------------------+

//| #MAMA |

//+------------------------------------------------------------------+

int start()

{

int i,counted_bars=IndicatorCounted();

double jI, jQ, DeltaPhase, alpha, ttime;

double Price[5],Smooth[8],Detrender[8],Q1[8],I1[8],I2[3],Q2[3];

double Re[3],Im[3],SmoothPeriod[3],Period_[3],Phase[3],MAMA[3],FAMA[3];

//----

if(Bars<=5) return(0);

//----

i=(Bars-counted_bars)+15;

while(i>=0)

{

Price[1]=((High+Low)/2); Price[2]=((High[i+1]+Low[i+1])/2);

Price[3]=((High[i+2]+Low[i+2])/2); Price[4]=((High[i+3]+Low[i+3])/2);

Smooth[1] = (4*Price[1] + 3*Price[2] + 2*Price[3] + Price[4]) / 10;

Detrender[1] = (0.0962*Smooth[1] + 0.5769*Smooth[3] - 0.5769*Smooth[5] - 0.0962*Smooth[7])*(0.075*Period_[2] + 0.54);

// {Compute InPhase and Quadrature components}

Q1[1] = (0.0962*Detrender[1] + 0.5769*Detrender[3] - 0.5769*Detrender[5] - 0.0962*Detrender[7])*(0.075*Period_[2] + 0.54);

I1[1] = Detrender[4];

// {Advance the phase of I1 and Q1 by 90 degrees}

jI = (0.0962*I1[1] + 0.5769*I1[3] - 0.5769*I1[5] - 0.0962*I1[7])*(0.075*Period_[2] + 0.54);

jQ = (0.0962*Q1[1] + 0.5769*Q1[3] - 0.5769*Q1[5] - 0.0962*Q1[7])*(0.075*Period_[2] + 0.54);

// {Phasor addition for 3 bar averaging)}

I2[1] = I1[1] - jQ;

Q2[1] = Q1[1] + jI;

// {Smooth the I and Q components before applying the discriminator}

I2[1] = 0.2*I2[1] + 0.8*I2[2];

Q2[1] = 0.2*Q2[1] + 0.8*Q2[2];

// {Homodyne Discriminator}

Re[1] = I2[1]*I2[2] + Q2[1]*Q2[2];

Im[1] = I2[1]*Q2[2] - Q2[1]*I2[2];

Re[1] = 0.2*Re[1] + 0.8*Re[2];

Im[1] = 0.2*Im[1] + 0.8*Im[2];

if (Im[1]!=0 && Re[1]!=0) Period_ [1]= 360/MathArctan(Im[1]/Re[1]);

if (Period_[1]>1.5*Period_[2]) Period_[1] = 1.5*Period_[2];

if (Period_[1]<0.67*Period_[2])Period_[1] = 0.67*Period_[2];

if (Period_[1]<6) Period_[1] = 6;

if (Period_[1]>50) Period_[1] = 50;

Period_[1] = 0.2*Period_[1] + 0.8*Period_[2];

SmoothPeriod[1] =0.33*Period_[1] + 0.67*SmoothPeriod[2];

if (I1[1] != 0) Phase[1] = (MathArctan(Q1[1] / I1[1]));

DeltaPhase = Phase[2] - Phase[1];

if (DeltaPhase < 1) DeltaPhase = 1;

alpha = FastLimit / DeltaPhase;

if (alpha < SlowLimit) alpha = SlowLimit;

MAMA[1] = alpha*Price[1] + (1 - alpha)*MAMA[2];

FAMA[1] = 0.5*alpha*MAMA[1] + (1 - 0.5*alpha)*FAMA[2];

FABuffer=1000*(MAMA[1]-FAMA[1]);

Smooth[7]=Smooth[6];

Smooth[6]=Smooth[5];

Smooth[5]=Smooth[4];

Smooth[4]=Smooth[3];

Smooth[3]=Smooth[2];

Smooth[2]=Smooth[1];

Detrender[7]=Detrender[6];

Detrender[6]=Detrender[5];

Detrender[5]=Detrender[4];

Detrender[4]=Detrender[3];

Detrender[3]=Detrender[2];

Detrender[2]=Detrender[1];

Q1[7]=Q1[6];

Q1[6]=Q1[5];

Q1[5]=Q1[4];

Q1[4]=Q1[3];

Q1[3]=Q1[2];

Q1[2]=Q1[1];

I1[7]=I1[6];I1[6]=I1[5];I1[5]=I1[4];I1[4]=I1[3];I1[3]=I1[2];I1[2]=I1[1];

Q2[2]=Q2[1];

I2[2]=I2[1];

Re[2]=Re[1];

Im[2]=Im[1];

SmoothPeriod[2]=SmoothPeriod[1];

Phase[2]=Phase[1];

Period_[2]=Period_[1];

MAMA[2]=MAMA[1];

FAMA[2]=FAMA[1];

i--;

}

return(0);

}

//+------------------------------------------------------------------+

Could you compile it and put it here as finished?

Thanks Hermes

http://www.mediafire.com/?kws7qd9tfpfkvcz

put it in metatrader\experts\indicators

to load, open (from metatrader) navigator (ctrl-N) and choose #MAMAnew to drag in an opened window (EURUSD for example). You see a new sub-window in EURUSD: this is your new indicator

remark: you can compile the source code by the metaexperts editor (F4)

Hi,

Just a little simple trick!

the fastest way to get the mq4 file for any source code of an indicator, you can simply open your notepad.

copy and paste the source file in it, ( here from //+---- to } )

save your file with the name you want ( here: MAMAnew )

then just change .txt in .mq4 ( here MAMAnew.txt in MAMAnew.mq4)

et voilà!

you can of course also use Metaeditor.

hope it helps

freddy