Cleon heiken ashi
Heiken Ashi je japonská technika, jak lepe rozpoznat trend. Cenu vykresluje také pomocí svíčet, ale pro výpočet open, high, low a close ceny používá následující algorismus:
- xClose = (Open+High+Low+Close)/4
tedy průměrná cena aktuálního baru - xOpen = [xOpen(Previous Bar) + Close(Previous Bar)]/2
průměr open a close předchozího baru - xHigh = Max(High, xOpen, xClose)
nejvyšší hodnota z výše uvedené sady - xLow = Min(Low, xOpen, xClose)
nejnižší hodnota z výše uvedené sady
//+——————————————————————+
//| Heiken Ashi.mq4 |
//| Copyright c 2004, MetaQuotes Software Corp. |
//| http://www.metaquotes.net |
//+——————————————————————+
#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 Blue
#property indicator_color3 Red
#property indicator_color4 Blue
//—- buffers
double
ExtMapBuffer1[],
ExtMapBuffer2[],
ExtMapBuffer3[],
ExtMapBuffer4[];
//—- vars
int
ExtCountedBars=0;
int init() {
//—- indicators
SetIndexStyle (0, DRAW_HISTOGRAM, 0, 1, Red);
SetIndexBuffer (0, ExtMapBuffer1);
SetIndexLabel (0, “HA Max / Min”);
SetIndexStyle (1, DRAW_HISTOGRAM, 0, 1, Blue);
SetIndexBuffer (1, ExtMapBuffer2);
SetIndexLabel (1, “HA Max / Min”);
SetIndexStyle (2, DRAW_HISTOGRAM, 0, 3, Red);
SetIndexBuffer (2, ExtMapBuffer3);
SetIndexLabel (2, “HA Open”);
SetIndexStyle (3, DRAW_HISTOGRAM, 0, 3, Blue);
SetIndexBuffer (3, ExtMapBuffer4);
SetIndexLabel (3, “HA Close”);
//—-
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);
IndicatorDigits(Digits);
return(0);
}
//+——————————————————————+
//| Custom indicator iteration function |
//+——————————————————————+
int start() {
double
haOpen,
haHigh,
haLow,
haClose;
int
pos = Bars – ExtCountedBars – 1;
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–;
}
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 < haClose) {
ExtMapBuffer1[pos] = haLow;
ExtMapBuffer2[pos] = haHigh;
} else {
ExtMapBuffer1[pos] = haHigh;
ExtMapBuffer2[pos] = haLow;
}
ExtMapBuffer3[pos] = haOpen;
ExtMapBuffer4[pos] = haClose;
pos–;
}
return(0);
}