//+------------------------------------------------------------------+ //| 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 = 5; extern int MA_Method = 0; 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