Avg Daily Range

//+------------------------------------------------------------------+
//| Avg Daily Range.mq4 |
//| Copyright © 2005, tageiger aka fxid10t@yahoo.com |
//| http://www.metatrader.org |
//+------------------------------------------------------------------+
#property copyright "Copyright © 2005, tageiger aka fxid10t@yahoo.com"
#property link "http://www.metatrader.org"

#property indicator_chart_window
#property indicator_buffers 3
#property indicator_color1 Yellow
#property indicator_color2 SpringGreen
#property indicator_color3 Tomato
//---- buffers
double ExtMapBuffer1[];
double ExtMapBuffer2[];
double ExtMapBuffer3[];

double rng,sum.rng,avg.rng;

int init() {
//---- indicators
SetIndexStyle(0,DRAW_LINE);
SetIndexBuffer(0,ExtMapBuffer1);
SetIndexStyle(1,DRAW_LINE);
SetIndexBuffer(1,ExtMapBuffer2);
SetIndexStyle(2,DRAW_LINE);
SetIndexBuffer(2,ExtMapBuffer3);
//----
return(0);}

int deinit() {return(0);}

int start() {
int counted_bars=IndicatorCounted();
rng=0;sum.rng=0;avg.rng=0;

for(int i=0;i<Bars;i++) {
rng=(iHigh(Symbol(),Period(),i)-iLow(Symbol(),Period(),i));
sum.rng+=rng;
}

int db=iBars(Symbol(),Period());
avg.rng=sum.rng/db;

// for(int t=0;t<db;t++) {
for(int s=0;s<Bars;s++) {

ExtMapBuffer2[s]=(iOpen(Symbol(),Period(),s)+(avg.rng/2));
ExtMapBuffer3[s]=(iOpen(Symbol(),Period(),s)-(avg.rng/2));
}// }
Comment("Last Tick: ",TimeToStr(CurTime(),TIME_DATE|TIME_SECONDS),"n",
"Sum of Period Ranges:",sum.rng,"n",
"Average Range:",avg.rng,"n",
"Total Bars:",i+1);

return(0);}
//+------------------------------------------------------------------+