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2018-03-09 16:43:19 +01:00

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//+------------------------------------------------------------------+
//| Fractals.mq5 |
//| Copyright 2009-2017, MetaQuotes Software Corp. |
//| http://www.mql5.com |
//+------------------------------------------------------------------+
#property copyright "2009-2017, MetaQuotes Software Corp."
#property link "http://www.mql5.com"
//---- indicator settings
#property indicator_chart_window
#property indicator_buffers 2
#property indicator_plots 2
#property indicator_type1 DRAW_ARROW
#property indicator_type2 DRAW_ARROW
#property indicator_color1 Gray
#property indicator_color2 Gray
#property indicator_label1 "Fractal Up"
#property indicator_label2 "Fractal Down"
//---- indicator buffers
double ExtUpperBuffer[];
double ExtLowerBuffer[];
//--- 10 pixels upper from high price
int ExtArrowShift=-10;
//+------------------------------------------------------------------+
//| Custom indicator initialization function |
//+------------------------------------------------------------------+
void OnInit()
{
//---- indicator buffers mapping
SetIndexBuffer(0,ExtUpperBuffer,INDICATOR_DATA);
SetIndexBuffer(1,ExtLowerBuffer,INDICATOR_DATA);
IndicatorSetInteger(INDICATOR_DIGITS,_Digits);
//---- sets first bar from what index will be drawn
PlotIndexSetInteger(0,PLOT_ARROW,217);
PlotIndexSetInteger(1,PLOT_ARROW,218);
//---- arrow shifts when drawing
PlotIndexSetInteger(0,PLOT_ARROW_SHIFT,ExtArrowShift);
PlotIndexSetInteger(1,PLOT_ARROW_SHIFT,-ExtArrowShift);
//---- sets drawing line empty value--
PlotIndexSetDouble(0,PLOT_EMPTY_VALUE,EMPTY_VALUE);
PlotIndexSetDouble(1,PLOT_EMPTY_VALUE,EMPTY_VALUE);
//---- initialization done
}
//+------------------------------------------------------------------+
//| Accelerator/Decelerator Oscillator |
//+------------------------------------------------------------------+
int OnCalculate(const int rates_total,
const int prev_calculated,
const datetime &time[],
const double &open[],
const double &high[],
const double &low[],
const double &close[],
const long &tick_volume[],
const long &volume[],
const int &spread[])
{
int i,limit;
//---
if(rates_total<5)
return(0);
//---
if(prev_calculated<7)
{
limit=2;
//--- clean up arrays
ArrayInitialize(ExtUpperBuffer,EMPTY_VALUE);
ArrayInitialize(ExtLowerBuffer,EMPTY_VALUE);
}
else limit=rates_total-5;
for(i=limit;i<rates_total-3 && !IsStopped();i++)
{
//---- Upper Fractal
if(high[i]>high[i+1] && high[i]>high[i+2] && high[i]>=high[i-1] && high[i]>=high[i-2])
ExtUpperBuffer[i]=high[i];
else ExtUpperBuffer[i]=EMPTY_VALUE;
//---- Lower Fractal
if(low[i]<low[i+1] && low[i]<low[i+2] && low[i]<=low[i-1] && low[i]<=low[i-2])
ExtLowerBuffer[i]=low[i];
else ExtLowerBuffer[i]=EMPTY_VALUE;
}
//--- OnCalculate done. Return new prev_calculated.
return(rates_total);
}
//+------------------------------------------------------------------+