Support Board

/*==========================================================================*/
float Highest(SCFloatArrayRef In, int StartIndex, int Length)
{
  float High = -FLT_MAX;
  
  // Get the high from the last Length indexes in the In array
  for (int SrcIndex = StartIndex; SrcIndex > StartIndex - Length; --SrcIndex)
  {
    if (SrcIndex < 0 || SrcIndex >= In.GetArraySize())
      continue;
    
    if (In[SrcIndex] > High)
      High = In[SrcIndex];
  }
  
  return High;
}

/*==========================================================================*/
float Lowest(SCFloatArrayRef In, int StartIndex, int Length)
{
  float Low = FLT_MAX;
  
  // Get the low from the last Length indexes in the In array
  for (int SrcIndex = StartIndex; SrcIndex > StartIndex - Length; --SrcIndex)
  {
    if (SrcIndex < 0 || SrcIndex >= In.GetArraySize())
      continue;
    
    if (In[SrcIndex] < Low)
      Low = In[SrcIndex];
  }
  
  return Low;
}

/*==========================================================================*/
SCFloatArrayRef PercentRank(SCFloatArrayRef In, SCFloatArrayRef Out, int Index, int Length)
{
  if (Index >= In.GetArraySize())  return Out;

  if(Index < 1 || Length < 1)  return Out;

  if (Index < Length -1)  Length = Index+1;

  float High = Highest(In, Index, Length);
  float Low = Lowest(In, Index, Length);

  float Range = High - Low;
  if (Range == 0) Out[Index] = Out[Index-1];
  else Out[Index] = 100.0f * (In[Index] - Low) / Range;
  return Out;
}

  
sc.RSI(sc.Close, sc.Subgraph[0], MOVAVGTYPE_WILDERS, RSI.GetInt());
PercentRank(sc.RSI, sc.Subgraph[1], sc.Index, STH.GetInt());