Heiken Ashi.mq4

[f.guigAdmin]

//+------------------------------------------------------------------+
//| Heiken Ashi.mq4 |
//| Copyright c 2004, MetaQuotes Software Corp. |
//| http://www.metaquotes.net |
//+------------------------------------------------------------------+
//| For Heiken Ashi we recommend next chart settings ( press F8 or |
//| select on menu 'Charts'->'Properties...'): |
//| - On 'Color' Tab select 'Black' for 'Line Graph' |
//| - On 'Common' Tab disable 'Chart on Foreground' checkbox and |
//| select 'Line Chart' radiobutton |
//+------------------------------------------------------------------+
#property copyright "Copyright 2004, MetaQuotes Software Corp."
#property link "http://www.metaquotes.net"
//----
#property indicator_chart_window
#property indicator_buffers 4
#property indicator_color1 Red
#property indicator_color2 Green
#property indicator_color3 Red
#property indicator_color4 Green
//----
extern color color1 = Red;
extern color color2 = Green;
extern color color3 = Red;
extern color color4 = Green;
//---- buffers
double ExtMapBuffer1[];
double ExtMapBuffer2[];
double ExtMapBuffer3[];
double ExtMapBuffer4[];
//----
int ExtCountedBars=0;
//+------------------------------------------------------------------+
//| Custom indicator initialization function |
//|------------------------------------------------------------------|
int init()
{
//---- indicators
SetIndexStyle(0, DRAW_HISTOGRAM, 0, 1, color1);
SetIndexBuffer(0, ExtMapBuffer1);
SetIndexStyle(1, DRAW_HISTOGRAM, 0, 1, color2);
SetIndexBuffer(1, ExtMapBuffer2);
SetIndexStyle(2, DRAW_HISTOGRAM, 0, 2, color3);
SetIndexBuffer(2, ExtMapBuffer3);
SetIndexStyle(3, DRAW_HISTOGRAM, 0, 2, color4);
SetIndexBuffer(3, ExtMapBuffer4);
//----
SetIndexDrawBegin(0, 10);
SetIndexDrawBegin(1, 10);
SetIndexDrawBegin(2, 10);
SetIndexDrawBegin(3, 10);
//---- indicator buffers mapping
SetIndexBuffer(0, ExtMapBuffer1);
SetIndexBuffer(1, ExtMapBuffer2);
SetIndexBuffer(2, ExtMapBuffer3);
SetIndexBuffer(3, ExtMapBuffer4);
//---- initialization done
return(0);
}
//+------------------------------------------------------------------+
//| Custom indicator deinitialization function |
//+------------------------------------------------------------------+
int deinit()
{
//----
return(0);
}
//+------------------------------------------------------------------+
//| Custom indicator iteration function |
//+------------------------------------------------------------------+
int start()
{
double haOpen, haHigh, haLow, haClose;
if(Bars <= 10)
return(0);
ExtCountedBars = IndicatorCounted();
//---- check for possible errors
if(ExtCountedBars < 0)
return(-1);
//---- last counted bar will be recounted
if(ExtCountedBars > 0)
ExtCountedBars--;
int pos = Bars - ExtCountedBars - 1;
while(pos >= 0)
{
haOpen = (ExtMapBuffer3[pos+1] + ExtMapBuffer4[pos+1]) / 2;
haClose = (Open[pos] + High[pos] + Low[pos] + Close[pos]) / 4;
haHigh = MathMax(High[pos], MathMax(haOpen, haClose));
haLow = MathMin(Low[pos], MathMin(haOpen, haClose));
if(haOpen {
ExtMapBuffer1[pos] = haLow;
ExtMapBuffer2[pos] = haHigh;
}
else
{
ExtMapBuffer1[pos] = haHigh;
ExtMapBuffer2[pos] = haLow;
}
ExtMapBuffer3[pos] = haOpen;
ExtMapBuffer4[pos] = haClose;
pos--;
}
//----
return(0);
}
//+------------------------------------------------------------------+