Bollinger Band Width for Metatrader

Who of you has the Bollinger Band With Indicator for me?
I tried to program it myself, but i 'm no programmer.
For those of you who want to make this indicator, the formula is:

(Upper Bolband - Lower Bolband) / Middle Bolband

If you want to share it, i would greatly appreciate it.

Thanks in advance

I think the formula you're looking for is UpperBand - LowerBand. I'm more than happy to help those who help themselves. Post what you've got so far and I'll help you with the code.

In his book Bollinger on bollinger bands, John Bollinger used the formula i typed in above, so i dont know if we are talking over the same thing here.

About the programming. I copied some text from a formula that looks simular to the bollinger band width. It's the formula for the %b in his book. It only has no simple moving average in it and thats immediately a big problem for me to overcome. All i have is this:

#property indicator_separate_window
#property indicator_buffers 1
#property indicator_color1 Yellow
//---- input parameters
extern int BBPeriod=20;
extern int StdDeviation=2;
//---- buffers
double BLGBuffer[];
//+------------------------------------------------------------------+
//| Custom indicator initialization function |
//+------------------------------------------------------------------+
int init()
{
string short_name;
//---- indicator line
SetIndexStyle(0,DRAW_LINE);
SetIndexBuffer(0,BLGBuffer);
//---- name for DataWindow and indicator subwindow label
short_name="BBpB("+BBPeriod+","+StdDeviation+")";
IndicatorShortName(short_name);
SetIndexLabel(0,short_name);
//----
SetIndexDrawBegin(0,BBPeriod);
//----
return(0);
}
//+------------------------------------------------------------------+
//| Momentum |
//+------------------------------------------------------------------+
int start()
{
int i,counted_bars=IndicatorCounted();
//----
if(Bars<=BBPeriod) return(0);
//---- initial zero
if(counted_bars<1)
for(i=1;i<=BBPeriod;i++) BLGBuffer[Bars-i]=0.0;
//----
i=Bars-BBPeriod-1;
if(counted_bars>=BBPeriod) i=Bars-counted_bars-1;
while(i>=0)
{
BLGBuffer[i]=(Close[i]-iBands(NULL,0,BBPeriod,StdDeviation,0,0,MODE_HIGH,i))/(iBands(NULL,0,BBPeriod,StdDeviation,0,0,MODE_LOW,i)-iBands(NULL,0,BBPeriod,StdDeviation,0,0,MODE_HIGH,i));
i--;
}
return(0);
}
//+------------------------------------------------------------------+

This is the formula of the %b. To adapt this formula to the new situation i changed the BLGBuffer[i]=(Close[i]-iBands(NULL,0,BBPeriod,StdDeviation,0,0,MODE_HIGH,i))/(iBands(NULL,0,BBPeriod,StdDeviation,0,0,MODE_LOW,i)-iBands(NULL,0,BBPeriod,StdDeviation,0,0,MODE_HIGH,i));

to :

(iBands(NULL,0,BBPeriod,StdDeviation,0,0,MODE_HIGH,i)-iBands(NULL,0,BBPeriod,StdDeviation,0,0,MODE_LOW,i)) / "simple moving average ??"

I just don't know what to type in for the 20 period sma. I once saw it standing as mov(C,20,S), but that one gives errors.

Is there a good tutorial for Metatrader 4 programming?

This is all i could come up with sofar. As you can see i am a real newbie to this. Hope you will help me.

Try this. If the calculation is different from what you're expecting I'm sure we can work it out.

I think this is the one. Thank you Tesla