//+------------------------------------------------------------------+
//| HeikenAshiOscillator.mq4
//+------------------------------------------------------------------+
#property copyright "Copyright � Pointzero"
#property link "Pointzero"
#property indicator_separate_window
#property indicator_buffers 3
#property indicator_color1 DodgerBlue
#property indicator_color2 Red
#property indicator_color3 Teal
#property indicator_width1 2
#property indicator_width2 2
#property indicator_width3 1
#define MaMetod 2
//-------------------------------
// External variables
//-------------------------------
extern string TimeFrame = "Current time frame";
extern int AvPeriod = 2;
//-------------------------------
// Buffers
//-------------------------------
double FextMapBuffer1[];
double FextMapBuffer2[];
double FextMapBuffer3[];
double FextMapBuffer4[];
double FextMapBuffer5[];
string indicatorFileName;
bool returnBars;
bool calculateValue;
int timeFrame;
//+------------------------------------------------------------------+
//| Custom indicator initialization function |
//|------------------------------------------------------------------|
int init()
{
// Total buffers
IndicatorBuffers(5);
// Visible buffers
SetIndexStyle(0,DRAW_HISTOGRAM, 0, indicator_width1, indicator_color1);
SetIndexBuffer(0, FextMapBuffer1);
SetIndexStyle(1,DRAW_HISTOGRAM, 0, indicator_width2, indicator_color2);
SetIndexBuffer(1, FextMapBuffer2);
SetIndexStyle(3,DRAW_LINE, 0, indicator_width3, indicator_color3);
SetIndexBuffer(2,FextMapBuffer3);
// Internal
SetIndexBuffer(3,FextMapBuffer4);
SetIndexBuffer(4,FextMapBuffer5);
//
//
//
//
//
indicatorFileName = WindowExpertName();
calculateValue = TimeFrame=="calculateValue"; if (calculateValue) { return(0); }
returnBars = TimeFrame=="returnBars"; if (returnBars) { return(0); }
timeFrame = stringToTimeFrame(TimeFrame);
//
//
//
//
//
// My name
IndicatorShortName(timeFrameToString(timeFrame)+" Heiken Ashi Oscillator");
return(0);
}
//+------------------------------------------------------------------+
//| Custom indicator deinitialization function |
//+------------------------------------------------------------------+
int deinit()
{
return(0);
}
//+------------------------------------------------------------------+
//| Custom indicator iteration function |
//+------------------------------------------------------------------+
int start()
{
int counted_bars=IndicatorCounted();
if(counted_bars<0) return(-1);
if(counted_bars>0) counted_bars--;
int limit=MathMin(Bars-counted_bars,Bars-1);
if (returnBars) { FextMapBuffer1[0] = MathMin(limit+1,Bars-1); return(0); }
// Check heiken ashi for past to present
if (calculateValue || timeFrame == Period())
{
for(int pos = limit; pos >= 0; pos--)
{
// Open and close
double open = iCustom(Symbol(), 0, "Heiken Ashi", 2, pos);
double close = iCustom(Symbol(), 0, "Heiken Ashi", 3, pos);
// Median
FextMapBuffer4[pos] = (open + close) / 2;
// Difference
FextMapBuffer5[pos] = FextMapBuffer4[pos] - FextMapBuffer4[pos+1];
// If bearish
if(open > close)
{
FextMapBuffer2[pos] = FextMapBuffer5[pos];
FextMapBuffer1[pos] = 0;
// If bullish
} else {
FextMapBuffer1[pos] = FextMapBuffer5[pos];
FextMapBuffer2[pos] = 0;
}
}
// Apply average
for(int i=0; i<Bars; i++) FextMapBuffer3[i] = iMAOnArray(FextMapBuffer5, Bars, AvPeriod, 0, MaMetod, i);
return(0);
}
//
//
//
//
//
limit = MathMax(limit,MathMin(Bars-1,iCustom(NULL,timeFrame,indicatorFileName,"returnBars",0,0)*timeFrame/Period()));
for(i=limit; i>=0; i--)
{
int y = iBarShift(NULL,timeFrame,Time[i]);
FextMapBuffer1[i] = iCustom(NULL,timeFrame,indicatorFileName,"calculateValue",AvPeriod,0,y);
FextMapBuffer2[i] = iCustom(NULL,timeFrame,indicatorFileName,"calculateValue",AvPeriod,1,y);
FextMapBuffer3[i] = iCustom(NULL,timeFrame,indicatorFileName,"calculateValue",AvPeriod,2,y);
}
return(0);
}
//-------------------------------------------------------------------
//
//-------------------------------------------------------------------
//
//
//
//
//
string sTfTable[] = {"M1","M5","M15","M30","H1","H4","D1","W1","MN"};
int iTfTable[] = {1,5,15,30,60,240,1440,10080,43200};
//
//
//
//
//
int stringToTimeFrame(string tfs)
{
tfs = stringUpperCase(tfs);
for (int i=ArraySize(iTfTable)-1; i>=0; i--)
if (tfs==sTfTable[i] || tfs==""+iTfTable[i]) return(MathMax(iTfTable[i],Period()));
return(Period());
}
string timeFrameToString(int tf)
{
for (int i=ArraySize(iTfTable)-1; i>=0; i--)
if (tf==iTfTable[i]) return(sTfTable[i]);
return("");
}
//
//
//
//
//
string stringUpperCase(string str)
{
string s = str;
for (int length=StringLen(str)-1; length>=0; length--)
{
int char = StringGetChar(s, length);
if((char > 96 && char < 123) || (char > 223 && char < 256))
s = StringSetChar(s, length, char - 32);
else if(char > -33 && char < 0)
s = StringSetChar(s, length, char + 224);
}
return(s);
}