Indicators Used
Miscellaneous
0
Views
0
Downloads
0
Favorites
BandsBandwidth2_v1
//+------------------------------------------------------------------+
//| BandsBandwidth2.mq4 |
//| Copyright © 2009, Investors Haven |
//| |
//+------------------------------------------------------------------+
#property copyright "Copyright © 2009, Investors Haven"
#property link ""
#property indicator_chart_window
#property indicator_buffers 4
#property indicator_color1 Yellow
#property indicator_color2 Purple
#property indicator_color3 Purple
#property indicator_width1 2
#property indicator_width2 3
#property indicator_width3 3
//---- indicator parameters
extern int BandsPeriod=20;
extern int BandsShift=0;
extern double BandsDeviations=2.0;
extern color TextColor = Purple;
//---- buffers
double MovingBuffer[];
double UpperBuffer[];
double LowerBuffer[];
double Bandwidth[];
//+------------------------------------------------------------------+
//| Custom indicator initialization function |
//+------------------------------------------------------------------+
int init()
{
// IndicatorBuffers(1);
//---- indicators
SetIndexStyle(0,DRAW_LINE);
SetIndexBuffer(0,MovingBuffer);
SetIndexStyle(1,DRAW_LINE);
SetIndexBuffer(1,UpperBuffer);
SetIndexStyle(2,DRAW_LINE);
SetIndexBuffer(2,LowerBuffer);
SetIndexStyle(3, 12);
SetIndexBuffer(3,Bandwidth);
//----
SetIndexDrawBegin(0,BandsPeriod+BandsShift);
SetIndexDrawBegin(1,BandsPeriod+BandsShift);
SetIndexDrawBegin(2,BandsPeriod+BandsShift);
SetIndexDrawBegin(3,BandsPeriod+BandsShift);
ObjectCreate( "BollingerBandwidth", OBJ_LABEL, 0,0,0,0,0,0,0);
ObjectSet( "BollingerBandwidth", OBJPROP_CORNER, 0);
ObjectSet( "BollingerBandwidth", OBJPROP_XDISTANCE, 5);
ObjectSet( "BollingerBandwidth", OBJPROP_YDISTANCE, 15);
ObjectSetText( "BollingerBandwidth", "", 12, "Arial", TextColor);
//----
return(0);
}
//+------------------------------------------------------------------+
//| expert deinitialization function |
//+------------------------------------------------------------------+
int deinit()
{
//----
ObjectDelete("BollingerBandwidth");
//----
return(0);
}
//+------------------------------------------------------------------+
//| Bollinger Bands |
//+------------------------------------------------------------------+
int start()
{
int i,k;
double deviation;
double sum,oldval,newres;
if(Bars<=BandsPeriod) return(0);
//----
int counted_bars = IndicatorCounted();
if(counted_bars < 0) return(-1);
if(counted_bars > 0) counted_bars--;
int limit = Bars - counted_bars;
if(counted_bars==0) limit-=1+BandsPeriod;
//---- initial zero
/*if(counted_bars<1)
for(i=1;i<=BandsPeriod;i++)
{
MovingBuffer[Bars-i]=EMPTY_VALUE;
UpperBuffer[Bars-i]=EMPTY_VALUE;
LowerBuffer[Bars-i]=EMPTY_VALUE;
Bandwidth[Bars-i]=EMPTY_VALUE;
}
//----
int limit=Bars-counted_bars;
if(counted_bars>0) limit++;*/
for(i=0; i<limit; i++)
MovingBuffer[i]=iMA(NULL,0,BandsPeriod,BandsShift,MODE_SMA,PRICE_CLOSE,i);
//----
//i=Bars-BandsPeriod+1;
//if(counted_bars>BandsPeriod-1) i=Bars-counted_bars-1;
i=limit;
while(i>=0)
{
sum=0.0;
k=i+BandsPeriod-1;
oldval=MovingBuffer[i];
while(k>=i)
{
newres=Close[k]-oldval;
sum+=newres*newres;
k--;
}
deviation=BandsDeviations*MathSqrt(sum/BandsPeriod);
UpperBuffer[i]=oldval+deviation;
LowerBuffer[i]=oldval-deviation;
Bandwidth[i]=MathFloor((UpperBuffer[i] - LowerBuffer[i])*10000);
i--;
}
string BollText = StringConcatenate("Bollinger Bandwidth: ", Bandwidth[0]);
ObjectSetText("BollingerBandwidth", BollText, 12, "Arial", TextColor );
//----
return(0);
}
//+------------------------------------------------------------------+
Comments
Markdown Formatting Guide
# H1
## H2
### H3
**bold text**
*italicized text*
[title](https://www.example.com)

`code`
```
code block
```
> blockquote
- Item 1
- Item 2
1. First item
2. Second item
---