//+------------------------------------------------------------------+
//| ATR.mq4 |
//| Copyright © 2005, MetaQuotes Software Corp. |
//| http://www.metaquotes.net/ |
//+------------------------------------------------------------------+
#property copyright "Copyright © 2005, MetaQuotes Software Corp."
#property link "http://www.metaquotes.net/"
#property indicator_separate_window
#property indicator_buffers 1
#property indicator_color1 DodgerBlue
//---- input parameters
extern int AtrPeriod=14; //---- buffers
double AtrBuffer[]; double TempBuffer[]; //+------------------------------------------------------------------+
//| Custom indicator initialization function |
//+------------------------------------------------------------------+
int init()
{
string short_name; //---- 1 additional buffer used for counting.
IndicatorBuffers(2); //---- indicator line
SetIndexStyle(0,DRAW_LINE); SetIndexBuffer(0,AtrBuffer); SetIndexBuffer(1,TempBuffer); //---- name for DataWindow and indicator subwindow label
short_name="ATR("+AtrPeriod+")"; IndicatorShortName(short_name); SetIndexLabel(0,short_name); //----
SetIndexDrawBegin(0,AtrPeriod); //----
return(0); }
//+------------------------------------------------------------------+
//| Average True Range |
//+------------------------------------------------------------------+
int start()
{
int i,counted_bars=IndicatorCounted(); //----
if(Bars<=AtrPeriod) return(0); //---- initial zero
if(counted_bars<1)
for(i=1;i<=AtrPeriod;i++) AtrBuffer[Bars-i]=0.0; //----
i=Bars-counted_bars-1; while(i>=0)
{
double high=High[i]; double low =Low[i]; if(i==Bars-1) TempBuffer[i]=high-low; else
{
double prevclose=Close[i+1]; TempBuffer[i]=MathMax(high,prevclose)-MathMin(low,prevclose); }
i--; }
//----
if(counted_bars>0) counted_bars--; int limit=Bars-counted_bars; for(i=0; i<limit; i++)
AtrBuffer[i]=iMAOnArray(TempBuffer,Bars,AtrPeriod,0,MODE_SMA,i); //----
return(0); }
//+------------------------------------------------------------------+
