//+------------------------------------------------------------------+
//| BBandWidthRatio.mq4 |
//| Maji |
//+------------------------------------------------------------------+
#property copyright "Maji"
#property link "None"
//----
#property indicator_separate_window
#property indicator_buffers 1
#property indicator_color1 Blue
//---- input parameters
extern int BB_Period=20;
extern double Deviation=2.0;
//----
double buf1[];
//+------------------------------------------------------------------+
//| Custom indicator initialization function |
//+------------------------------------------------------------------+
int init()
{
SetIndexStyle(0, DRAW_LINE, EMPTY, 2);
IndicatorDigits(MarketInfo(Symbol(), MODE_DIGITS));
SetIndexDrawBegin(0,BB_Period);
SetIndexLabel(0,"BBandWidthRatio");
SetIndexBuffer(0, buf1);
return(0);
}
//+------------------------------------------------------------------+
//| Custom indicator deinitialization function |
//+------------------------------------------------------------------+
int deinit()
{
//----
//----
return(0);
}
//+------------------------------------------------------------------+
//| Custom indicator iteration function |
//+------------------------------------------------------------------+
int start()
{
int i, j;
double ave, sko, sum;
int counted_bars=IndicatorCounted();
double MA, Up, Dn;
//----
if(Bars<=BB_Period) return(0);
//----
i=Bars-BB_Period;
if(counted_bars>BB_Period) i=Bars-counted_bars-1;
if (Bars<=BB_Period) return;
for(i=Bars-BB_Period; i>=0; i--)
{
// buf2[i] = iMA(NULL,0,BB_Period,0,MODE_SMA,PRICE_CLOSE,i);
MA=iMA(NULL,0,BB_Period,0,MODE_SMA,PRICE_CLOSE,i);
sum=0;
for(j=0; j<BB_Period; j++) sum+=Close[i+j];
ave=sum/BB_Period;
sum=0;
for(j=0; j<BB_Period; j++) sum+=(Close[i+j]-ave)*(Close[i+j]-ave);
sko=MathSqrt(sum/BB_Period);
// buf4[i] = buf2[i]+(Deviation*sko);
// buf3[i] = buf2[i]-(Deviation*sko);
Up=MA+(Deviation*sko);
Dn=MA-(Deviation*sko);
// buf1[i] = 2*(Deviation*sko)/buf2[i];
buf1[i]=2*(Deviation*sko)/MA;
}
return(0);
}
//+------------------------------------------------------------------+
Sample
Analysis
Market Information Used:
Series array that contains close prices for 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: