//+------------------------------------------------------------------+
//| TrendEnvelopes_v2.mq4 |
//| Copyright © 2007, TrendLaboratory Ltd. |
//| http://finance.groups.yahoo.com/group/TrendLaboratory |
//| E-mail: igorad2003@yahoo.co.uk |
//+------------------------------------------------------------------+
#property copyright "Copyright © 2007, TrendLaboratory Ltd."
#property link "http://finance.groups.yahoo.com/group/TrendLaboratory"
//---- indicator settings
#property indicator_chart_window
#property indicator_buffers 4
#property indicator_color1 Yellow
#property indicator_color2 Yellow
#property indicator_width1 2
#property indicator_width2 2
#property indicator_color3 Yellow
#property indicator_color4 Yellow
#property indicator_width3 1
#property indicator_width4 1
//---- indicator parameters
extern int MA_Period = 3;
extern int MA_Method = 1;
extern int UseSignal = 0;
extern int AlertMode = 0;
extern int WarningMode = 0;
//---- indicator buffers
double UpBuffer[];
double DnBuffer[];
double UpSignal[];
double DnSignal[];
double smax[];
double smin[];
double trend[];
//----
int ExtCountedBars=0;
bool UpTrendAlert=false, DownTrendAlert=false;
//+------------------------------------------------------------------+
//| Custom indicator initialization function |
//+------------------------------------------------------------------+
int init()
{
int draw_begin;
string short_name;
//---- drawing settings
IndicatorBuffers(7);
SetIndexStyle(0,DRAW_LINE);
SetIndexStyle(1,DRAW_LINE);
SetIndexStyle(2,DRAW_ARROW);
SetIndexArrow(2,108);
SetIndexStyle(3,DRAW_ARROW);
SetIndexArrow(3,108);
IndicatorDigits(MarketInfo(Symbol(),MODE_DIGITS));
if(MA_Period<2) MA_Period=10;
draw_begin=MA_Period-1;
//---- indicator short name
IndicatorShortName("TrendEnvelopes("+MA_Period+")");
SetIndexLabel(0,"UpTrendEnv");
SetIndexLabel(1,"DnTrendEnv");
SetIndexLabel(2,"UpSignal");
SetIndexLabel(3,"DnSignal");
SetIndexDrawBegin(0,draw_begin);
SetIndexDrawBegin(1,draw_begin);
SetIndexDrawBegin(2,draw_begin);
SetIndexDrawBegin(3,draw_begin);
//---- indicator buffers mapping
SetIndexBuffer(0,UpBuffer);
SetIndexBuffer(1,DnBuffer);
SetIndexBuffer(2,UpSignal);
SetIndexBuffer(3,DnSignal);
SetIndexBuffer(4,smax);
SetIndexBuffer(5,smin);
SetIndexBuffer(6,trend);
//---- initialization done
return(0);
}
//+------------------------------------------------------------------+
//| Custom indicator iteration function |
//+------------------------------------------------------------------+
int start()
{
int limit;
if(Bars<=MA_Period) return(0);
ExtCountedBars=IndicatorCounted();
//---- check for possible errors
if (ExtCountedBars<0) return(-1);
//---- last counted bar will be recounted
if (ExtCountedBars>0) ExtCountedBars--;
limit=Bars-ExtCountedBars;
//---- EnvelopesM counted in the buffers
for(int i=limit; i>=0; i--)
{
smax[i] = iMA(NULL,0,MA_Period,0,MA_Method,PRICE_HIGH,i);
smin[i] = iMA(NULL,0,MA_Period,0,MA_Method,PRICE_LOW,i);
trend[i]=trend[i+1];
if (Close[i]>smax[i+1]) trend[i]=1;
if (Close[i]<smin[i+1]) trend[i]=-1;
if(trend[i]>0)
{
if (smin[i]<smin[i+1]) smin[i]=smin[i+1];
UpBuffer[i]=smin[i];
if (UseSignal>0)
{
if (trend[i+1]<0)
{
UpSignal[i] = smin[i];
if (WarningMode>0 && i==0) PlaySound("alert2.wav");
}
else UpSignal[i] = EMPTY_VALUE;
}
DnBuffer[i]=EMPTY_VALUE;
DnSignal[i]=EMPTY_VALUE;
}
else
{
if(smax[i]>smax[i+1]) smax[i]=smax[i+1];
DnBuffer[i]=smax[i];
if (UseSignal>0)
{
if (trend[i+1]>0)
{
DnSignal[i] = smax[i];
if (WarningMode>0 && i==0) PlaySound("alert2.wav");
}
else DnSignal[i] = EMPTY_VALUE;
}
UpBuffer[i]=EMPTY_VALUE;
UpSignal[i]=EMPTY_VALUE;
}
}
//----------
string Message;
if ( trend[2]<0 && trend[1]>0 && Volume[0]>1 && !UpTrendAlert)
{
Message = " "+Symbol()+" M"+Period()+": Signal for BUY";
if ( AlertMode>0 ) Alert (Message);
UpTrendAlert=true; DownTrendAlert=false;
}
if ( trend[2]>0 && trend[1]<0 && Volume[0]>1 && !DownTrendAlert)
{
Message = " "+Symbol()+" M"+Period()+": Signal for SELL";
if ( AlertMode>0 ) Alert (Message);
DownTrendAlert=true; UpTrendAlert=false;
}
//---- done
return(0);
}
//+------------------------------------------------------------------+
Sample
Analysis
Market Information Used:
Series array that contains close prices for each bar
Series array that contains tick volumes of each bar
Indicator Curves created:
Implements a curve of type DRAW_LINE
Implements a curve of type DRAW_ARROW
Indicators Used:
Moving average indicator
Custom Indicators Used:
Order Management characteristics:
Other Features:
It plays sound alerts