//+------------------------------------------------------------------+ //| TrendEnvelopes_v1.mq4 | //| Copyright © 2006, TrendLaboratory Ltd. | //| http://finance.groups.yahoo.com/group/TrendLaboratory | //| E-mail: igorad2003@yahoo.co.uk | //+------------------------------------------------------------------+ #property copyright "Copyright © 2006, TrendLaboratory Ltd." #property link "http://finance.groups.yahoo.com/group/TrendLaboratory" //---- indicator settings #property indicator_chart_window #property indicator_buffers 4 #property indicator_color1 White #property indicator_color2 Red #property indicator_width1 3 #property indicator_width2 3 #property indicator_color3 White #property indicator_color4 Red #property indicator_width3 3 #property indicator_width4 3 // inputs for showing alerts extern bool SoundON=true; extern bool EmailON=false; //---- indicator parameters extern int MA_Period = 14; extern int MA_Shift = 0; extern int MA_Method = 3; extern int Applied_Price = 0; extern double Deviation =0.2; extern int UseSignal = 1; //---- indicator buffers double UpBuffer[]; double DnBuffer[]; double UpSignal[]; double DnSignal[]; double smax[]; double smin[]; double trend[]; //---- int ExtCountedBars=0; // declare variables used by Alert int flagval1 = 0; int flagval2 = 0; //+------------------------------------------------------------------+ //| Custom indicator initialization function | //+------------------------------------------------------------------+ int init() { int draw_begin; string short_name; //---- drawing settings IndicatorBuffers(7); SetIndexStyle(0,DRAW_LINE); SetIndexShift(0,MA_Shift); SetIndexStyle(1,DRAW_LINE); SetIndexShift(1,MA_Shift); SetIndexStyle(2,DRAW_ARROW); SetIndexShift(2,MA_Shift); SetIndexArrow(2,233); SetIndexStyle(3,DRAW_ARROW); SetIndexShift(3,MA_Shift); SetIndexArrow(3,234); IndicatorDigits(MarketInfo(Symbol(),MODE_DIGITS)); if(MA_Period<2) MA_Period=14; draw_begin=MA_Period-1; //---- indicator short name IndicatorShortName("Env("+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); if(Deviation<0.1) Deviation=0.1; if(Deviation>100.0) Deviation=100.0; //---- 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] = (1+Deviation/100)*iMA(NULL,0,MA_Period,0,MA_Method,Applied_Price,i); smin[i] = (1-Deviation/100)*iMA(NULL,0,MA_Period,0,MA_Method,Applied_Price,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) { // Add Buy Alert if (i == 1 && flagval1==0) { flagval1=1; flagval2=0; if (SoundON) Alert("BUY signal at Ask=",Ask,"\n Bid=",Bid,"\n Time=",TimeToStr(CurTime(),TIME_DATE)," ",TimeHour(CurTime()),":",TimeMinute(CurTime()),"\n Symbol=",Symbol()," Period=",Period()); if (EmailON) SendMail("BUY signal alert","BUY signal at Ask="+DoubleToStr(Ask,4)+", Bid="+DoubleToStr(Bid,4)+", Date="+TimeToStr(CurTime(),TIME_DATE)+" "+TimeHour(CurTime())+":"+TimeMinute(CurTime())+" Symbol="+Symbol()+" Period="+Period()); } 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] = Low[i]-0.5*iATR(NULL,0,MA_Period,i); DnBuffer[i]=EMPTY_VALUE; } else { // Add Sell Alert if (i == 1 && flagval2==0) { flagval2=1; flagval1=0; if (SoundON) Alert("SELL signal at Ask=",Ask,"\n Bid=",Bid,"\n Date=",TimeToStr(CurTime(),TIME_DATE)," ",TimeHour(CurTime()),":",TimeMinute(CurTime()),"\n Symbol=",Symbol()," Period=",Period()); if (EmailON) SendMail("SELL signal alert","SELL signal at Ask="+DoubleToStr(Ask,4)+", Bid="+DoubleToStr(Bid,4)+", Date="+TimeToStr(CurTime(),TIME_DATE)+" "+TimeHour(CurTime())+":"+TimeMinute(CurTime())+" Symbol="+Symbol()+" Period="+Period()); } 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] = High[i]+0.5*iATR(NULL,0,MA_Period,i); UpBuffer[i]=EMPTY_VALUE; } } //---- done return(0); } //+------------------------------------------------------------------+
Sample
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Analysis
Market Information Used:
Series array that contains close prices for each bar
Series array that contains the lowest prices of each bar
Series array that contains the highest prices 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
Indicator of the average true range
Custom Indicators Used:
Order Management characteristics:
Other Features:
It issuies visual alerts to the screen
It sends emails