//+------------------------------------------------------------------+
//| LabTrend1_v2.mq4 |
//| Copyright © 2006, TrendLaboratory Ltd. |
//| http://finance.groups.yahoo.com/group/TrendLaboratory |
//| E-mail: igorad2004@list.ru |
//+------------------------------------------------------------------+
#property copyright "Copyright © 2006, TrendLaboratory Ltd."
#property link "http://finance.groups.yahoo.com/group/TrendLaboratory"
//----
#property indicator_chart_window
#property indicator_buffers 6
#property indicator_color1 Blue
#property indicator_color2 Red
#property indicator_color3 Blue
#property indicator_color4 Red
#property indicator_width3 0
#property indicator_width4 0
//---- input parameters
extern double Risk =3; //Price Channel narrowing factor (1..10)
extern int TimeFrame =0; //TimeFrame in min
extern int Signal =1; //Display signals mode
extern int ColorBar =1; //Display color bars mode: 0-no,1-yes
extern int SoundAlertMode=0; //Sound Alert switch
//---- indicator buffers
double UpTrendSignal[];
double DownTrendSignal[];
double UpTrendBar[];
double DownTrendBar[];
double smax[];
double smin[];
double trend[];
int Length=9, time[2];
bool Expert=true;
double BSMAX[2],BSMIN[2];
bool UpTrendAlert=false, DownTrendAlert=false;
//+------------------------------------------------------------------+
//| Custom indicator initialization function |
//+------------------------------------------------------------------+
int init()
{
string short_name;
//---- indicator line
IndicatorBuffers(7);
SetIndexBuffer(0,UpTrendSignal);
SetIndexBuffer(1,DownTrendSignal);
SetIndexBuffer(2,UpTrendBar);
SetIndexBuffer(3,DownTrendBar);
SetIndexBuffer(4,smax);
SetIndexBuffer(5,smin);
SetIndexBuffer(6,trend);
SetIndexStyle(0,DRAW_ARROW);
SetIndexStyle(1,DRAW_ARROW);
SetIndexStyle(2,DRAW_HISTOGRAM);
SetIndexStyle(3,DRAW_HISTOGRAM);
SetIndexArrow(0,108);
SetIndexArrow(1,108);
//---- name for DataWindow and indicator subwindow label
short_name="LabTrend1("+DoubleToStr(Risk,2)+")";
IndicatorShortName(short_name);
SetIndexLabel(0,"UpTrend Signal");
SetIndexLabel(1,"DownTrend Signal");
SetIndexLabel(2,"UpTrend Bar");
SetIndexLabel(3,"DownTrend Bar");
//----
SetIndexEmptyValue(0,0.0);
SetIndexEmptyValue(1,0.0);
SetIndexEmptyValue(2,0.0);
SetIndexEmptyValue(3,0.0);
SetIndexDrawBegin(0,Length);
SetIndexDrawBegin(1,Length);
SetIndexDrawBegin(2,Length);
SetIndexDrawBegin(3,Length);
//----
return(0);
}
//+------------------------------------------------------------------+
//| LabTrend1_v2 |
//+------------------------------------------------------------------+
int start()
{
datetime TimeArray[];
int i,shift,y=0,MaxBar,limit,counted_bars=IndicatorCounted();
double high, low, price, sum, UpBar,DnBar;
double bsmax[1],bsmin[1];
double LowArray[],HighArray[];
int Line=0; //Display line mode: 0-no,1-yes
//----
if (Bars-1<Length+1)return(0);
if (counted_bars<0)return(-1);
if (counted_bars>0) counted_bars--;
//----
MaxBar=Bars-1-Length-1;
limit=Bars-counted_bars-1 + TimeFrame/Period();
//----
if (limit>MaxBar)
{
for(shift=limit;shift>=MaxBar;shift--)
{
smax[Bars-shift]=0.0;
smin[Bars-shift]=0.0;
UpTrendSignal[Bars-shift]=0.0;
DownTrendSignal[Bars-shift]=0.0;
UpTrendBar[Bars-shift]=0.0;
DownTrendBar[Bars-shift]=0.0;
}
limit=MaxBar;
}
if(ArrayResize(bsmin,limit+2)!=limit+2)return(-1);
if(ArrayResize(bsmax,limit+2)!=limit+2)return(-1);
int Tnew=Time[limit+1];
//----
if (limit<MaxBar)
if (Tnew==time[1])
{
bsmin[limit+1]=BSMIN[1];
bsmax[limit+1]=BSMAX[1];
Expert=false;
}
else
if (Tnew==time[0])
{
bsmin[limit+1]=BSMIN[0];
bsmax[limit+1]=BSMAX[0];
BSMIN[1]=BSMIN[0];
BSMAX[1]=BSMAX[0];
}
else
{
if (Tnew>time[1])Print("Error1");
else Print("Error2");
return(-1);
}
// Draw price channel boards + calculation : Channel middle, half channel width,
ArrayCopySeries(TimeArray,MODE_TIME,Symbol(),TimeFrame);
ArrayCopySeries(LowArray,MODE_LOW,Symbol(),TimeFrame);
ArrayCopySeries(HighArray,MODE_HIGH,Symbol(),TimeFrame);
for(shift=0,y=0;shift<limit;shift++)
{
if (Time[shift]<TimeArray[y]) y++;
smin[shift]=10000000; smax[shift]=-100000000;
for(i=Length-1;i>=0;i--)
{
smin[shift]=MathMin(smin[shift],LowArray[y+i]);
smax[shift]=MathMax(smax[shift],HighArray[y+i]);
}
}
for(shift=limit;shift>=0;shift--)
{
UpTrendSignal[shift]=0.0;
DownTrendSignal[shift]=0.0;
UpTrendBar[shift]=0.0;
DownTrendBar[shift]=0.0;
// Calculation channel stop values
bsmax[shift]=smax[shift]-(smax[shift]-smin[shift])*(33.0-Risk)/100.0;
bsmin[shift]=smin[shift]+(smax[shift]-smin[shift])*(33.0-Risk)/100.0;
// Signal area : any conditions to trend determination:
// 1. Price Channel breakout
trend[shift]=trend[shift+1];
if(trend[shift+1]<0 && Close[shift]>bsmax[shift]) trend[shift]=1;
if(trend[shift+1]>0 && Close[shift]<bsmin[shift]) trend[shift]=-1;
// Drawing area
UpBar=bsmax[shift];
DnBar=bsmin[shift];
if (trend[shift]>0)
{
if (Signal>0 && trend[shift+1]<0)
{
UpTrendSignal[shift]=Low[shift]-0.5*iATR(NULL,TimeFrame,10,shift);
if (SoundAlertMode>0 && shift==0) PlaySound("alert2.wav");
}
else
UpTrendSignal[shift]=EMPTY_VALUE;
if(ColorBar>0)
{
if(Close[shift]>UpBar)
{
UpTrendBar[shift]=High[shift];
DownTrendBar[shift]=Low[shift];
}
else
{
UpTrendBar[shift]=0.0;
DownTrendBar[shift]=0.0;
}
}
}
else
if (trend[shift]<0)
{
if (Signal==1 && trend[shift+1]>0)
{
DownTrendSignal[shift]=High[shift]+0.5*iATR(NULL,TimeFrame,10,shift);
if (SoundAlertMode>0 && shift==0) PlaySound("alert2.wav");
}
else
DownTrendSignal[shift]=0.0;
if(ColorBar>0)
{
if(Close[shift]<DnBar)
{
UpTrendBar[shift]=Low[shift];
DownTrendBar[shift]=High[shift];
}
else
{
UpTrendBar[shift]=0.0;
DownTrendBar[shift]=0.0;
}
}
}
if ((shift==2)||((shift==1)&&(Expert==true)))
{
time [shift-1]=Time [shift];
BSMIN[shift-1]=bsmin[shift];
BSMAX[shift-1]=bsmax[shift];
}
}
//----------
string Message;
//----
if(trend[2]<0 && trend[1]>0 && Volume[0]>1 && !UpTrendAlert)
{
Message=" "+Symbol()+" M"+Period()+": LabTrend Signal for BUY";
if(SoundAlertMode>0 && NewBar()==true) Alert (Message);
UpTrendAlert=true; DownTrendAlert=false;
}
if(trend[2]>0 && trend[1]<0 && Volume[0]>1 && !DownTrendAlert)
{
Message=" "+Symbol()+" M"+Period()+": LabTrend Signal for SELL";
if(SoundAlertMode>0 && NewBar()==true) Alert (Message);
DownTrendAlert=true; UpTrendAlert=false;
}
//----
return(0);
}
//+------------------------------------------------------------------+
bool NewBar()
{
static datetime lastbar ;
datetime curbar=Time[0];
if(lastbar!=curbar)
{
lastbar=curbar;
return(true);
}
else
{
return(false);
}
}
/* static int LastAlert = 0;
if( LastAlert == 0 || LastAlert_1 < Bars )
{
Alert(alert_msg);
LastAlert = Bars;
}*/
//+------------------------------------------------------------------+
Sample
Analysis
Market Information Used:
Series array that contains open time of each bar
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
Series array that contains tick volumes of each bar
Indicator Curves created:
Implements a curve of type DRAW_ARROW
Implements a curve of type DRAW_HISTOGRAM
Indicators Used:
Indicator of the average true range
Custom Indicators Used:
Order Management characteristics:
Other Features:
It plays sound alerts
It issuies visual alerts to the screen