//+------------------------------------------------------------------+
//| Aroon oscillator.mq4 |
//| mladen |
//+------------------------------------------------------------------+
#property copyright "mladen"
#property link "mladenfx@gmail.com"
#property indicator_chart_window
#property indicator_buffers 2
#property indicator_color1 Lime
#property indicator_color2 Red
extern int AroonPeriod = 25;
extern int Filter = 50;
extern string Alerts_Settings = "Settings for alerts";
extern bool alerts.On = false;
extern bool alerts.OnCurrent = false;
extern bool alerts.Message = true;
extern bool alerts.Sound = false;
extern bool alerts.Email = false;
//
//
//
//
//
double buffer1[];
double buffer2[];
double buffer3[];
//+------------------------------------------------------------------+
//| |
//+------------------------------------------------------------------+
//
//
//
//
//
int init()
{
IndicatorBuffers(3);
SetIndexBuffer(0,buffer1); SetIndexStyle(0,DRAW_ARROW); SetIndexArrow(0,108);
SetIndexBuffer(1,buffer2); SetIndexStyle(1,DRAW_ARROW); SetIndexArrow(1,108);
SetIndexBuffer(2,buffer3);
IndicatorShortName("Aroon oscillator ("+AroonPeriod+")");
return(0);
}
//+------------------------------------------------------------------+
//| |
//+------------------------------------------------------------------+
//
//
//
//
//
int start()
{
int counted_bars=IndicatorCounted();
int i,limit;
if(counted_bars<0) return(-1);
if(counted_bars>0) counted_bars--;
limit=Bars-counted_bars;
//
//
//
//
//
for(i=limit; i>=0; i--)
{
double AroonUp = 100.0*(AroonPeriod-iHighest(NULL,0,MODE_HIGH,AroonPeriod,i)+i)/AroonPeriod;
double AroonDn = 100.0*(AroonPeriod- iLowest(NULL,0,MODE_LOW ,AroonPeriod,i)+i)/AroonPeriod;
buffer1[i] = EMPTY_VALUE;
buffer2[i] = EMPTY_VALUE;
buffer3[i] = AroonUp-AroonDn;
if (buffer3[i]> Filter && buffer3[i+1]< Filter) buffer1[i]= Low[i] -iATR(NULL,0,20,i)/2.0;
if (buffer3[i]<-Filter && buffer3[i+1]>-Filter) buffer2[i]= High[i]+iATR(NULL,0,20,i)/2.0;
}
//
//
//
//
//
if (alerts.On)
{
if (alerts.OnCurrent)
int forBar = 0;
else forBar = 1;
//
//
//
//
//
if (buffer1[forBar]!= EMPTY_VALUE) doAlert("Arron oscillator trend chaned to UP");
if (buffer2[forBar]!= EMPTY_VALUE) doAlert("Arron oscillator trend chaned to DOWN");
}
return(0);
}
//+----------------------------------------------------------------------------------+
//| |
//+----------------------------------------------------------------------------------+
//
//
//
//
//
void doAlert(string doWhat)
{
static string previousAlert="nothing";
static datetime previousTime;
string message;
if (previousAlert != doWhat || previousTime != Time[0]) {
previousAlert = doWhat;
previousTime = Time[0];
//
//
//
//
//
message = StringConcatenate(Symbol()," at ",TimeToStr(TimeLocal(),TIME_SECONDS)," Aroon oscillator - ",doWhat);
if (alerts.Message) Alert(message);
if (alerts.Email) SendMail("Arron oscillator",message);
if (alerts.Sound) PlaySound("alert2.wav");
}
}
Sample
Analysis
Market Information Used:
Series array that contains the lowest prices of each bar
Series array that contains the highest prices of each bar
Series array that contains open time of each bar
Indicator Curves created:
Implements a curve of type DRAW_ARROW
Indicators Used:
Indicator of the average true range
Custom Indicators Used:
Order Management characteristics:
Other Features:
It issuies visual alerts to the screen
It sends emails
It plays sound alerts