RSI computing shows incorrect results

Magus I 2022.07.27 01:09

Hello friends,

I am trying to write a Expert Advisor for trading but I would like to use the Relative Strenght Index for my trades.

This is the code i wrote based on the formula on the internet and also the indicator. It should work but it doesn't match the results found on Tradingview and also Metatrader 4 with the same window settings.

I don't know why can someone help me out please?

//Relative Strength Index
float RSI(int Length)
  {

   float RSI, AvgIncrease, AvgDecline;
   float SumIncrease = 0;
   float SumDecline = 0;

   for(int i = 1; i <= Length; i++)
     {
      if(Close[i] > Close[i-1])
        {
         SumIncrease += Close[i] - Close[i-1];
        }
      else
        {
         SumDecline -= Close[i] - Close[i-1];
        }
     }

   AvgIncrease = SumIncrease / Length;
   AvgDecline = SumDecline / Length;

   RSI = 100 - 100 / (1 + AvgIncrease/AvgDecline);
   return RSI;

  }