AO2

//+------------------------------------------------------------------+
//|                                                          AO2.mq4 |
//|                                                              T.Y |
//|                                        http://www.metaquotes.net |
//+------------------------------------------------------------------+
#property copyright "T.Y"
#property link      "http://www.metaquotes.net"

#property indicator_separate_window
#property indicator_buffers 4
#property indicator_color1 RoyalBlue
#property indicator_color2 PaleVioletRed
#property indicator_color3 Aqua
#property indicator_color4 Red
#property indicator_width1 5
#property indicator_width2 5
#property indicator_width3 3
#property indicator_width4 3

extern int Magnification = 0;

double Buf0[], Buf1[];
double Buf2[], Buf3[];
//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int init()
  {
    SetIndexBuffer(0, Buf0);
    SetIndexBuffer(1, Buf1);
    SetIndexBuffer(2, Buf2);
    SetIndexBuffer(3, Buf3);
    SetIndexStyle(0, DRAW_HISTOGRAM);
    SetIndexStyle(1, DRAW_HISTOGRAM);
    SetIndexStyle(2, DRAW_HISTOGRAM);
    SetIndexStyle(3, DRAW_HISTOGRAM);

    if(Magnification>0)     return(0);
   int tf = Period();
   if(tf==1)    Magnification = 10;    
   if(tf==5)    Magnification = 6;  
   if(tf==15)   Magnification = 4;  
   if(tf==30)   Magnification = 4;  
   if(tf==60)   Magnification = 4;  
   if(tf==240)  Magnification = 6;      
    return(0);
  }
//+------------------------------------------------------------------+
//| Custom indicator deinitialization function                       |
//+------------------------------------------------------------------+
int deinit()
  {
//----
   
//----
   return(0);
  }
//+------------------------------------------------------------------+
//| Custom indicator iteration function                              |
//+------------------------------------------------------------------+
int start()
  {
    int    counted_bars = IndicatorCounted();
    int    limit        = Bars - counted_bars;
    double ao1, ao2;

    if(limit==Bars)     limit -= (34*Magnification+1);
    for(int i=limit-1; i>=0; i--){  
        ao1 = iMA(NULL, 0, 5,  0, MODE_SMA, PRICE_MEDIAN, i)   
            - iMA(NULL, 0, 34, 0, MODE_SMA, PRICE_MEDIAN, i);
        ao2 = iMA(NULL, 0, 5,  0, MODE_SMA, PRICE_MEDIAN, i+1)
            - iMA(NULL, 0, 34, 0, MODE_SMA, PRICE_MEDIAN, i+1);
        if(ao1>ao2){
            Buf2[i] = ao1;
            Buf3[i] = 0.0;
        }else{
            Buf2[i] = 0.0;
            Buf3[i] = ao1;
        }
        ao1 = iMA(NULL, 0, Magnification*5,  0, MODE_SMA, PRICE_MEDIAN, i)   
            - iMA(NULL, 0, Magnification*34, 0, MODE_SMA, PRICE_MEDIAN, i);
        ao2 = iMA(NULL, 0, Magnification*5,  0, MODE_SMA, PRICE_MEDIAN, i+1)
            - iMA(NULL, 0, Magnification*34, 0, MODE_SMA, PRICE_MEDIAN, i+1);
        if(ao1>ao2){
            Buf0[i] = ao1;
            Buf1[i] = 0.0;
        }else{
            Buf0[i] = 0.0;
            Buf1[i] = ao1;
        }
    }
    
    return(0);
  }
//+------------------------------------------------------------------+