4EMA Indicators MT4 - Bitcoin trading strategy - https://georgekarapi.com/2020/06/26/bitcoin-trading-strategy-4ema-for-metatrader-4-download/

4EMA.mq4

//+------------------------------------------------------------------+
//|                                                         4EMA.mq4 |
//|                                            Giorgos Karapiperidis |
//|                                         https://georgekarapi.com |
//+------------------------------------------------------------------+
#property copyright "Giorgos Karapiperidis"
#property link      "https://georgekarapi.com"
#property version   "1.00"
#property strict
#property indicator_chart_window
#property indicator_buffers 4
#property indicator_plots   4
//--- plot Line1
#property indicator_label1  "Line1"
#property indicator_type1   DRAW_LINE
#property indicator_color1  clrMediumBlue
#property indicator_style1  STYLE_SOLID
#property indicator_width1  1
//--- plot Line2
#property indicator_label2  "Line2"
#property indicator_type2   DRAW_LINE
#property indicator_color2  clrLime
#property indicator_style2  STYLE_SOLID
#property indicator_width2  1
//--- plot Line3
#property indicator_label3  "Line3"
#property indicator_type3   DRAW_LINE
#property indicator_color3  clrYellow
#property indicator_style3  STYLE_SOLID
#property indicator_width3  1
//--- plot Line4
#property indicator_label4  "Line4"
#property indicator_type4   DRAW_LINE
#property indicator_color4  clrRed
#property indicator_style4  STYLE_SOLID
#property indicator_width4  1
//--- input parameters
input int      Line1=8;
input int      Line2=13;
input int      Line3=21;
input int      Line4=55;
//--- indicator buffers
double         Line1Buffer[];
double         Line2Buffer[];
double         Line3Buffer[];
double         Line4Buffer[];
//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int OnInit()
  {
//--- indicator buffers mapping
   SetIndexBuffer(0,Line1Buffer);
   SetIndexBuffer(1,Line2Buffer);
   SetIndexBuffer(2,Line3Buffer);
   SetIndexBuffer(3,Line4Buffer);
   
   IndicatorBuffers(4);
   return(0);
  }

double ema(int value, int i) {
   return iMA(Symbol(), PERIOD_CURRENT, value,0,MODE_EMA,PRICE_CLOSE,i);
}

int start()
{
   int limit = Bars-IndicatorCounted();

   for(int i=limit-1; i>=0; i--)
   {
      Line1Buffer[i] = ema(Line1, i);
      Line2Buffer[i] = ema(Line2, i );
      Line3Buffer[i] = ema(Line3, i);
      Line4Buffer[i] = ema(Line4, i);
   }

   return(0);
}