//+------------------------------------------------------------------+
//| sStochastic.mq4 |
//| Copyright © 2004, MetaQuotes Software Corp. |
//| http://www.metaquotes.net/ |
//+------------------------------------------------------------------+
#property copyright "Copyright © 2004, MetaQuotes Software Corp."
#property link "http://www.metaquotes.net/"
//----
#property indicator_separate_window
#property indicator_minimum 0
#property indicator_maximum 100
#property indicator_buffers 2
#property indicator_color1 LightSeaGreen
#property indicator_color2 Red
//---- input parameters
extern int KPeriod = 5;
extern int DPeriod = 3;
extern int Slowing = 3;
//---- buffers
double MainBuffer[];
double SignalBuffer[];
double HighesBuffer[];
double LowesBuffer[];
//----
int draw_begin1 = 0;
int draw_begin2 = 0;
//---- Íîìåð áàðà, ïî êîòîðîìó áóäåò èñêàòüñÿ ñèãíàë
#define SIGNAL_BAR 1
//+------------------------------------------------------------------+
//| Custom indicator initialization function |
//+------------------------------------------------------------------+
int init()
{
string short_name;
//---- 2 additional buffers are used for counting.
IndicatorBuffers(4);
SetIndexBuffer(2, HighesBuffer);
SetIndexBuffer(3, LowesBuffer);
//---- indicator lines
SetIndexStyle(0, DRAW_LINE);
SetIndexBuffer(0, MainBuffer);
SetIndexStyle(1, DRAW_LINE);
SetIndexBuffer(1, SignalBuffer);
//---- name for DataWindow and indicator subwindow label
short_name="sSto(" + KPeriod + "," + DPeriod + "," + Slowing + ")";
IndicatorShortName(short_name);
SetIndexLabel(0, short_name);
SetIndexLabel(1, "Signal");
//----
draw_begin1 = KPeriod+Slowing;
draw_begin2 = draw_begin1+DPeriod;
SetIndexDrawBegin(0, draw_begin1);
SetIndexDrawBegin(1, draw_begin2);
//----
return(0);
}
//+------------------------------------------------------------------+
//| Stochastic oscillator |
//+------------------------------------------------------------------+
int start()
{
int i, k;
int counted_bars = IndicatorCounted();
double price;
//----
if(Bars <= draw_begin2)
return(0);
//---- initial zero
if(counted_bars < 1)
{
for(i = 1; i <= draw_begin1; i++)
MainBuffer[Bars-i] = 0;
for(i = 1; i <= draw_begin2; i++)
SignalBuffer[Bars-i] = 0;
}
//---- minimums counting
i = Bars - KPeriod;
if(counted_bars > KPeriod)
i = Bars - counted_bars - 1;
while(i >= 0)
{
double min = 1000000;
k = i + KPeriod - 1;
while(k >= i)
{
price = Low[k];
if(min > price)
min = price;
k--;
}
LowesBuffer[i] = min;
i--;
}
//---- maximums counting
i = Bars - KPeriod;
if(counted_bars > KPeriod)
i = Bars - counted_bars - 1;
while(i >= 0)
{
double max = -1000000;
k = i + KPeriod - 1;
while(k >= i)
{
price = High[k];
if(max < price)
max = price;
k--;
}
HighesBuffer[i] = max;
i--;
}
//---- %K line
i = Bars - draw_begin1;
if(counted_bars > draw_begin1)
i = Bars - counted_bars - 1;
while(i >= 0)
{
double sumlow = 0.0;
double sumhigh = 0.0;
for(k = (i + Slowing - 1); k >= i; k--)
{
sumlow += Close[k] - LowesBuffer[k];
sumhigh += HighesBuffer[k] - LowesBuffer[k];
}
if(sumhigh == 0.0)
MainBuffer[i] = 100.0;
else
MainBuffer[i] = sumlow / sumhigh*100;
i--;
}
//---- last counted bar will be recounted
if(counted_bars > 0)
counted_bars--;
int limit = Bars - counted_bars;
//---- signal line is simple movimg average
for(i = 0; i < limit; i++)
SignalBuffer[i] = iMAOnArray(MainBuffer, Bars, DPeriod, 0, MODE_SMA, i);
//---- Ñòàòè÷åñêèå ïåðåìåííûå, â êîòîðûõ õðàíÿòñÿ
//---- âðåìÿ ïîñëåäíåãî áàðà è íàïðàâëåíèå ïîñëåäíåãî ñèãíàëà
static int PrevSignal = 0, PrevTime = 0;
//---- Åñëè áàðîì äëÿ àíàëèçà âûáðàí íå 0-é, íàì íåò ñìûñëà ïðîâåðÿòü ñèãíàë
//---- íåñêîëüêî ðàç. Åñëè íå íà÷àëñÿ íîâûé áàð, âûõîäèì.
if(SIGNAL_BAR > 0 && Time[0] <= PrevTime)
return(0);
//---- Îòìå÷àåì, ÷òî ýòîò áàð ïðîâåðåí
PrevTime = Time[0];
//---- Åñëè ïðåäûäóùèé ñèãíàë áûë ÑÅËË èëè ýòî ïåðâûé çàïóñê (PrevSignal=0)
if(PrevSignal <= 0)
{
if(MainBuffer[SIGNAL_BAR] - 30.0 > 0 && 30.0 - MainBuffer[SIGNAL_BAR+1] >= 0)
{
PrevSignal = 1;
Alert("sStochastic (", Symbol(), ", ", Period(), ") - BUY!!!");
}
}
if(PrevSignal >= 0)
{
if(70.0 - MainBuffer[SIGNAL_BAR] > 0 && MainBuffer[SIGNAL_BAR+1] - 70.0 >= 0)
{
PrevSignal = -1;
Alert("sStochastic (", Symbol(), ", ", Period(), ") - SELL!!!");
}
}
//----
return(0);
}
//+------------------------------------------------------------------+
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 close prices for each bar
Series array that contains open time of each bar
Indicator Curves created:
Implements a curve of type DRAW_LINE
Indicators Used:
Moving average indicator
Custom Indicators Used:
Order Management characteristics:
Other Features:
It issuies visual alerts to the screen