//+------------------------------------------------------------------+
//| Bands.mq4 |
//| Copyright © 2005, MetaQuotes Software Corp. |
//| http://www.metaquotes.net/ |
//| Modified by Robert Hill to use any MA including LSMA |
//| instead of SMA |
//+------------------------------------------------------------------+
#property copyright "Copyright © 2005, MetaQuotes Software Corp."
#property link "http://www.metaquotes.net/"
#property indicator_chart_window
#property indicator_buffers 5
#property indicator_color1 Yellow
#property indicator_color2 LightSeaGreen
#property indicator_color3 LightSeaGreen
#property indicator_color4 Red
#property indicator_color5 Red
//---- indicator parameters
extern string m = "--Moving Average Types--";
extern string m0 = " 0 = SMA";
extern string m1 = " 1 = EMA";
extern string m2 = " 2 = SMMA";
extern string m3 = " 3 = LWMA";
extern string m4 = " 4 = LSMA";
extern int MA_Type=0;
extern string p = "--Applied Price Types--";
extern string p0 = " 0 = close";
extern string p1 = " 1 = open";
extern string p2 = " 2 = high";
extern string p3 = " 3 = low";
extern string p4 = " 4 = median(high+low)/2";
extern string p5 = " 5 = typical(high+low+close)/3";
extern string p6 = " 6 = weighted(high+low+close+close)/4";
extern int MA_AppliedPrice = 0;
extern string b = "--Bands Inputs--";
extern int BandsPeriod=20;
extern int BandsShift=0;
extern double BandsDeviations1 = 1.0;
extern double BandsDeviations2 = 2.5;
extern bool DisplayMidLine = true;
//---- buffers
double MovingBuffer[];
double UpperBuffer1[];
double LowerBuffer1[];
double UpperBuffer2[];
double LowerBuffer2[];
//---- variables
int MA_Mode;
string strMAType;
//+------------------------------------------------------------------+
//| Custom indicator initialization function |
//+------------------------------------------------------------------+
int init()
{
//---- indicators
SetIndexStyle(0,DRAW_LINE);
SetIndexBuffer(0,MovingBuffer);
SetIndexStyle(1,DRAW_LINE);
SetIndexBuffer(1,UpperBuffer1);
SetIndexStyle(2,DRAW_LINE);
SetIndexBuffer(2,LowerBuffer1);
SetIndexStyle(3,DRAW_LINE);
SetIndexBuffer(3,UpperBuffer2);
SetIndexStyle(4,DRAW_LINE);
SetIndexBuffer(4,LowerBuffer2);
//----
SetIndexDrawBegin(0,BandsPeriod+BandsShift);
SetIndexDrawBegin(1,BandsPeriod+BandsShift);
SetIndexDrawBegin(2,BandsPeriod+BandsShift);
SetIndexDrawBegin(3,BandsPeriod+BandsShift);
SetIndexDrawBegin(4,BandsPeriod+BandsShift);
//----
switch (MA_Type)
{
case 1: strMAType="EMA"; MA_Mode=MODE_EMA; break;
case 2: strMAType="SMMA"; MA_Mode=MODE_SMMA; break;
case 3: strMAType="LWMA"; MA_Mode=MODE_LWMA; break;
case 4: strMAType="LSMA"; break;
default: strMAType="SMA"; MA_Mode=MODE_SMA; break;
}
IndicatorShortName( strMAType+ " (" +BandsPeriod + ") ");
return(0);
}
//+------------------------------------------------------------------------+
//| LSMA - Least Squares Moving Average function calculation |
//| LSMA_In_Color Indicator plots the end of the linear regression line |
//+------------------------------------------------------------------------+
//+------------------------------------------------------------------+
//| LSMA with PriceMode |
//| PrMode 0=close, 1=open, 2=high, 3=low, 4=median(high+low)/2, |
//| 5=typical(high+low+close)/3, 6=weighted(high+low+close+close)/4 |
//+------------------------------------------------------------------+
double LSMA(int TimeFrame, int Rperiod, int prMode, int shift)
{
int i, myShift;
double sum, pr;
int length;
double lengthvar;
double tmp;
double wt;
length = Rperiod;
sum = 0;
for(i = length; i >= 1 ; i--)
{
lengthvar = length + 1;
lengthvar /= 3;
tmp = 0;
myShift = length - i + shift;
switch (prMode)
{
case 0: pr = iClose(NULL,TimeFrame,myShift);break;
case 1: pr = iOpen(NULL,TimeFrame,myShift);break;
case 2: pr = iHigh(NULL,TimeFrame,myShift);break;
case 3: pr = iLow(NULL,TimeFrame,myShift);break;
case 4: pr = (iHigh(NULL,TimeFrame,myShift) + iLow(NULL,TimeFrame,myShift))/2;break;
case 5: pr = (iHigh(NULL,TimeFrame,myShift) + iLow(NULL,TimeFrame,myShift) + iClose(NULL,TimeFrame,myShift))/3;break;
case 6: pr = (iHigh(NULL,TimeFrame,myShift) + iLow(NULL,TimeFrame,myShift) + iClose(NULL,TimeFrame,myShift) + iClose(NULL,TimeFrame,myShift))/4;break;
}
tmp = ( i - lengthvar)*pr;
sum+=tmp;
}
wt = sum*6/(length*(length+1));
wt = MathFloor(wt/Point)*Point;
return(wt);
}
//+------------------------------------------------------------------+
//| Bollinger Bands |
//+------------------------------------------------------------------+
int start()
{
int i,k,counted_bars=IndicatorCounted();
double deviation1, deviation2;
double sum,oldval,newres;
//----
if(Bars<=BandsPeriod) return(0);
//---- initial zero
if(counted_bars<1)
for(i=1;i<=BandsPeriod;i++)
{
MovingBuffer[Bars-i]=EMPTY_VALUE;
UpperBuffer1[Bars-i]=EMPTY_VALUE;
LowerBuffer1[Bars-i]=EMPTY_VALUE;
UpperBuffer2[Bars-i]=EMPTY_VALUE;
LowerBuffer2[Bars-i]=EMPTY_VALUE;
}
//----
int limit=Bars-counted_bars;
if(counted_bars>0) limit++;
for(i=0; i<limit; i++)
{
if (MA_Type == 4)
MovingBuffer[i]=LSMA(0, BandsPeriod, MA_AppliedPrice,i);
else
MovingBuffer[i]=iMA(NULL,0,BandsPeriod,BandsShift,MA_Mode,MA_AppliedPrice,i);
}
//----
i=Bars-BandsPeriod+1;
if(counted_bars>BandsPeriod-1) i=Bars-counted_bars-1;
while(i>=0)
{
sum=0.0;
k=i+BandsPeriod-1;
oldval=MovingBuffer[i];
while(k>=i)
{
newres=Close[k]-oldval;
sum+=newres*newres;
k--;
}
deviation1=BandsDeviations1*MathSqrt(sum/BandsPeriod);
deviation2=BandsDeviations2*MathSqrt(sum/BandsPeriod);
UpperBuffer1[i]=oldval+deviation1;
LowerBuffer1[i]=oldval-deviation1;
UpperBuffer2[i]=oldval+deviation2;
LowerBuffer2[i]=oldval-deviation2;
i--;
}
if (DisplayMidLine == false)
{
for(i=1;i<=Bars;i++)
MovingBuffer[i]=EMPTY_VALUE;
}
//----
return(0);
}
//+------------------------------------------------------------------+
Sample
Analysis
Market Information Used:
Series array that contains close prices for each bar
Series array that contains open prices of each bar
Series array that contains the highest prices of each bar
Series array that contains the lowest prices of each bar
Indicator Curves created:
Implements a curve of type DRAW_LINE
Indicators Used:
Moving average indicator
Custom Indicators Used:
Order Management characteristics:
Other Features: