How to modify ATR ?

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Bonjour,
Quelqu'un pourrait-il m'aider s'il vous plaît?
Je cherche comment modifier l'indicateur "Average True Range" de Metatrader 4 pour qu'il indique l'écart entre l'ouverture et la clôture et non pas entre le plus haut et plus bas.
Je vous remercie pour vos réponses.
Alexandre


Traduction avec Google...

Hello,
Somebody could it help me please?
I seek how to modify the indicator "Average True Range" of Metatrader 4 so that it indicates the difference between the open and the close and not between highest and low.
I thank you for your answers.
Alexandre



How to make ????????



//+------------------------------------------------------------------+
//| ATR.mq4 |
//| Copyright © 2005, MetaQuotes Software Corp. |
//| https://www.metaquotes.net/ |
//+------------------------------------------------------------------+
#property copyright "Copyright © 2005, MetaQuotes Software Corp."
#property link "https://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);
}
//+------------------------------------------------------------------+
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