//+------------------------------------------------------------------+ //| 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 LightBlue #property indicator_color2 Orange #property indicator_width1 2 #property indicator_width2 2 #property indicator_color3 LightBlue #property indicator_color4 Orange #property indicator_width3 2 #property indicator_width4 2 //---- indicator parameters extern int MA_Period = 34; int MA_Shift = 0; int MA_Method = 3; int Applied_Price = 0; double Deviation =0.2; int UseSignal = 0; extern int PlayCount = 3; extern string wavName = "news.wav"; extern int Pause = 10; extern bool SendMessage=false; //---- indicator buffers double UpBuffer[]; double DnBuffer[]; double UpSignal[]; double DnSignal[]; double smax[]; double smin[]; double trend[]; bool UpTrendAlert=false, DownTrendAlert=false; //---- int ExtCountedBars=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<14) 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) { 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; if (trend[1]!=trend[2] && !UpTrendAlert) { ps(1); UpTrendAlert=true; DownTrendAlert=false; } } 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] = High[i]+0.5*iATR(NULL,0,MA_Period,i); UpBuffer[i]=EMPTY_VALUE; if (trend[1]!=trend[2] && !DownTrendAlert) { ps(-1); UpTrendAlert=false; DownTrendAlert=true; } } } //---- done return(0); } int ps(int trnd) { string Message=" "+Symbol()+": No Signal"; if (trnd<0) Message = " "+Symbol()+": Signal for SELL"; if (trnd>0) Message = " "+Symbol()+": Signal for BUY"; Alert(Message); for (int i=0;i<=PlayCount;i++) { Sleep(Pause*1000); PlaySound(wavName); } if (SendMessage) { SendMail ("Signal from Indicator",TimeToStr(CurTime())+Message); } } //+------------------------------------------------------------------+
Sample
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 plays sound alerts