//+------------------------------------------------------------------+
//| PPO.mq4 |
//| Copyright © 2007 Tom Balfe |
//| |
//| Percentage Price Oscillator |
//| This is a momentum indicator. |
//| Signal line is EMA of PPO. |
//| |
//| Follows formula: (FastEMA-SlowEMA)/SlowEMA |
//+------------------------------------------------------------------+
#property copyright "Copyright © 2007 Tom Balfe"
#property link "redcarsarasota@yahoo.com"
//----
#property indicator_separate_window
#property indicator_buffers 4
//----
#property indicator_color1 SkyBlue
#property indicator_color2 Red
#property indicator_color3 Blue
#property indicator_color4 Red
#property indicator_width1 2
#property indicator_width2 1
#property indicator_style2 2
//---- user changeable stuff
extern int FastEMA=12;
extern int SlowEMA=26;
extern int SignalEMA=9;
extern bool sound= true;
//---- two buffers
double PPOBuffer[];
double SignalBuffer[];
double ExtMapBuffer3[];
double ExtMapBuffer4[];
static int prevtime = 0 ;
//+------------------------------------------------------------------+
//| |
//+------------------------------------------------------------------+
int init()
{
SetIndexStyle(0,DRAW_LINE);
SetIndexStyle(1,DRAW_LINE);
SetIndexDrawBegin(1,SignalEMA);
IndicatorDigits(Digits+1);
SetIndexBuffer(0,PPOBuffer);
SetIndexBuffer(1,SignalBuffer);
SetIndexStyle(2,DRAW_ARROW,Red);
SetIndexArrow(2,236);
SetIndexBuffer(2,ExtMapBuffer3);
SetIndexEmptyValue(2,0.0);
SetIndexStyle(3,DRAW_ARROW,Blue);
SetIndexArrow(3,238);
SetIndexBuffer(3,ExtMapBuffer4);
SetIndexEmptyValue(3,0.0);
//----
IndicatorShortName("PPO ("+FastEMA+","+SlowEMA+","+SignalEMA+")");
SetIndexLabel(0,"PPO");
SetIndexLabel(1,"Signal");
//----
return(0);
}
//+------------------------------------------------------------------+
//| |
//+------------------------------------------------------------------+
int start()
{
int limit;
int counted_bars=IndicatorCounted();
//---- last counted bar will be recounted
if(counted_bars>0) counted_bars--;
limit=Bars-counted_bars;
//---- (FastEMA-SlowEMA)/SlowEMA
//---- PPO counted in the 1st buffer
for(int i=0; i<limit; i++)
{
PPOBuffer[i]=(iMA(NULL,0,FastEMA,0,MODE_EMA,PRICE_CLOSE,i)-iMA(NULL,0,SlowEMA,0,MODE_EMA,PRICE_CLOSE,i))/
iMA(NULL,0,SlowEMA,0,MODE_EMA,PRICE_CLOSE,i);
}
for(i=0; i<limit; i++)
{
SignalBuffer[i]=iMAOnArray(PPOBuffer,Bars,SignalEMA,0,MODE_EMA,i);
if (Time[0]!=prevtime)
{
if ((PPOBuffer[i+2]>SignalBuffer[i+2])&&(PPOBuffer[i+1]<SignalBuffer[i+1]))
{
ExtMapBuffer4[i]=SignalBuffer[i];
if (sound == true){ PlaySound("alert.wav"); }
}
if ((PPOBuffer[i+2]<SignalBuffer[i+2])&&(PPOBuffer[i+1]>SignalBuffer[i+1]))
{
ExtMapBuffer3[i]=SignalBuffer[i];
if (sound == true){ PlaySound("alert2.wav"); }
}
prevtime=Time[0];
}
}
return(0);
}
//+--------------------------------------------------------------
Sample
Analysis
Market Information Used:
Series array that contains open time of each bar
Indicator Curves created:
Implements a curve of type DRAW_LINE
Implements a curve of type DRAW_ARROW
Indicators Used:
Moving average indicator
Custom Indicators Used:
Order Management characteristics:
Other Features:
It plays sound alerts