Awesome oscillator - where is value in code?

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Where is the value of the AO in this code?

I want to add an alert that tells me when the zero value has been hit or there has been a cross from +ve to -ve and vice versa:

[quote]

//+------------------------------------------------------------------+
//| Awesome.mq4 |
//| Copyright © 2005, MetaQuotes Software Corp. |
//| http://www.metaquotes.net/ |
//+------------------------------------------------------------------+
#property copyright "Copyright © 2005, MetaQuotes Software Corp."
#property link "http://www.metaquotes.net/"
//---- indicator settings
#property indicator_separate_window
#property indicator_buffers 3
#property indicator_color1 Black
#property indicator_color2 Green
#property indicator_color3 Red

//---- indicator buffers
double ExtBuffer0[];
double ExtBuffer1[];
double ExtBuffer2[];

//+------------------------------------------------------------------+
//| Custom indicator initialization function |
//+------------------------------------------------------------------+
int init()
{
//---- drawing settings
SetIndexStyle(0,DRAW_NONE);
SetIndexStyle(1,DRAW_HISTOGRAM);
SetIndexStyle(2,DRAW_HISTOGRAM);
IndicatorDigits(Digits+1);
SetIndexDrawBegin(0,34);
SetIndexDrawBegin(1,34);
SetIndexDrawBegin(2,34);
//---- 3 indicator buffers mapping
SetIndexBuffer(0,ExtBuffer0);
SetIndexBuffer(1,ExtBuffer1);
SetIndexBuffer(2,ExtBuffer2);
//---- name for DataWindow and indicator subwindow label
IndicatorShortName("AO");
SetIndexLabel(1,NULL);
SetIndexLabel(2,NULL);
//---- initialization done
return(0);
}
//+------------------------------------------------------------------+
//| Awesome Oscillator |
//+------------------------------------------------------------------+
int start()
{
int limit;
int counted_bars=IndicatorCounted();
double prev,current;
//---- last counted bar will be recounted
if(counted_bars>0) counted_bars--;
limit=Bars-counted_bars;
//---- macd
for(int i=0; i<limit; i++)
ExtBuffer0[i]=iMA(NULL,0,5,0,MODE_SMA,PRICE_MEDIAN,i)-iMA(NULL,0,34,0,MODE_SMA,PRICE_MEDIAN,i);
//---- dispatch values between 2 buffers
bool up=true;
for(i=limit-1; i>=0; i--)
{
current=ExtBuffer0[i];
prev=ExtBuffer0[i+1];
if(current>prev) up=true;
if(current<prev) up=false;
if(!up)
{
ExtBuffer2[i]=current;
ExtBuffer1[i]=0.0;
}
else
{
ExtBuffer1[i]=current;
ExtBuffer2[i]=0.0;
}
}
//---- done
return(0);
}
//+------------------------------------------------------------------+

[/quote]

 

Same as for any other indicators - they are in the indicator buffers. In this case, ExtBuffer0/1/2.


ExtBuffer0 contains the AO value, but this one is not displayed. The Up value is copied to ExtBuffer1 and displayed as Green. The Down values is copied to ExtBuffer2 and displayed as Red.


In your case, you can just use ExtBuffer0 to test for 0, as well as Up/Down. Hint: look as current/prev lines in the indicator code.

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