周末有位朋友问起Heikiun Ashi指标，当时在外地没怎么回复，今天在这里与大家一起分享文华版与MT4版源码的不同，有兴趣学编写指标的朋友一起来探讨下。
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Heikiun Ashi指标
Heikiun Ashi指标称平均棒图或平滑蜡烛图，通过计算每个时间周期的开盘价、最高价、最低价和收盘价，生成新的蜡烛图，以更清晰地展现价格趋势。这种指标有助于过滤市场噪音，凸显主要趋势，建议用于大周期看趋势。
Heikiun Ashi指标并不建议单独作为期货、外汇或者黄金的交易决策的依据，投资者应当与其他技术分析指标、基本面分析和市场情绪等因素相结合，进行综合判断。
源 码
下方分享的Heikiun Ashi指标源码为主图K线形态，是根据常见的方式改写。仅作为策略思路拓展，不建议直接用于期货等投资实盘中（投资有风险，入市须谨慎）。
交易员可以根据艾云策略所提供的指标源码，结合平时的交易经验进行改编，形成自己的交易策略。
文华版：适用于文华6、7、8等软件M:=3;XXOPEN:=(REF(OPEN,M)+REF(CLOSE,M))/2;XXCLOSE:=(HIGH+LOW+CLOSE+OPEN)/4;XXHIGH:=MAX1(XXOPEN,XXCLOSE,HHV(HIGH,M));XXLOW:=MIN1 (XXOPEN,XXCLOSE,LLV(LOW,M));STICKLINE(XXCLOSE>XXOPEN,XXCLOSE ,XXOPEN ,8,1 ),COLORRED;DRAWLINE(XXCLOSE>XXOPEN,XXHIGH ,XXCLOSE>XXOPEN,XXCLOSE,COLORRED );DRAWLINE(XXCLOSE>XXOPEN,XXOPEN ,XXCLOSE>XXOPEN,XXLOW ,COLORRED);STICKLINE(XXCLOSE<=XXOPEN,XXCLOSE ,XXOPEN ,8,0 ),COLORFFFF66;DRAWLINE(XXCLOSE<=XXOPEN,XXOPEN ,XXCLOSE<=XXOPEN,XXHIGH,COLORFFFF66);DRAWLINE(XXCLOSE<=XXOPEN,XXCLOSE ,XXCLOSE<=XXOPEN,XXLOW,COLORFFFF66);
MT4版:
#property indicator_chart_window
#property indicator_buffers 4
#property indicator_color1 Red
#property indicator_color2 White
#property indicator_color3 Red
#property indicator_color4 White
#property indicator_width1 1
#property indicator_width2 1
#property indicator_width3 3
#property indicator_width4 3
//—
input color ExtColor1 = Red; // Shadow of bear candlestick
input color ExtColor2 = White; // Shadow of bull candlestick
input color ExtColor3 = Red; // Bear candlestick body
input color ExtColor4 = White; // Bull candlestick body
//— buffers
double ExtLowHighBuffer[];
double ExtHighLowBuffer[];
double ExtOpenBuffer[];
double ExtCloseBuffer[];
//+——————————————————————+
//| Custom indicator initialization function |
//|——————————————————————|
void OnInit(void)
{
IndicatorShortName(“Heiken Ashi”);
IndicatorDigits(Digits);
//— indicator lines
SetIndexStyle(0,DRAW_HISTOGRAM,0,1,ExtColor1)
SetIndexBuffer(0,ExtLowHighBuffer);
SetIndexStyle(1,DRAW_HISTOGRAM,0,1,ExtColor2);
SetIndexBuffer(1,ExtHighLowBuffer);
SetIndexStyle(2,DRAW_HISTOGRAM,0,3,ExtColor3);
SetIndexBuffer(2,ExtOpenBuffer);
SetIndexStyle(3,DRAW_HISTOGRAM,0,3,ExtColor4);
SetIndexBuffer(3,ExtCloseBuffer);
//—
SetIndexLabel(0,”Low/High”);
SetIndexLabel(1,”High/Low”);
SetIndexLabel(2,”Open”);
SetIndexLabel(3,”Close”);
SetIndexDrawBegin(0,10);
SetIndexDrawBegin(1,10);
SetIndexDrawBegin(2,10);
SetIndexDrawBegin(3,10);
//— indicator buffers mapping
SetIndexBuffer(0,ExtLowHighBuffer);
SetIndexBuffer(1,ExtHighLowBuffer);
SetIndexBuffer(2,ExtOpenBuffer);
SetIndexBuffer(3,ExtCloseBuffer);
//— initialization done
}
//+——————————————————————+
//| Heiken Ashi |
//+——————————————————————+
int OnCalculate(const int rates_total,
const int prev_calculated,
const datetime &time[],
const double &open[],
const double &high[],
const double &low[],
const double &close[],
const long &tick_volume[],
const long &volume[],
const int &spread[])
{
int i,pos;
double haOpen,haHigh,haLow,haClose;
//—
if(rates_total<=10)
return(0);//— counting from 0 to rates_total
ArraySetAsSeries(ExtLowHighBuffer,false);
ArraySetAsSeries(ExtHighLowBuffer,false);
ArraySetAsSeries(ExtOpenBuffer,false);
ArraySetAsSeries(ExtCloseBuffer,false);
ArraySetAsSeries(open,false);
ArraySetAsSeries(high,false);
ArraySetAsSeries(low,false);
ArraySetAsSeries(close,false);
//— preliminary calculation
if(prev_calculated>1)
pos=prev_calculated-1;
else
{
//— set first candle
if(open[0]<close[0])
{
ExtLowHighBuffer[0]=low[0];
ExtHighLowBuffer[0]=high[0];
}
else
{
ExtLowHighBuffer[0]=high[0];
ExtHighLowBuffer[0]=low[0];
}
ExtOpenBuffer[0]=open[0];
ExtCloseBuffer[0]=close[0];
//—
pos=1;
}
//— main loop of calculations
for(i=pos; i<rates_total; i++)
{
haOpen=(ExtOpenBuffer[i-1]+ExtCloseBuffer[i-1])/2;
haClose=(open[i]+high[i]+low[i]+close[i])/4;
haHigh=MathMax(high[i],MathMax(haOpen,haClose));
haLow=MathMin(low[i],MathMin(haOpen,haClose));
if(haOpen<haClose)
{
ExtLowHighBuffer[i]=haLow;
ExtHighLowBuffer[i]=haHigh;
}
else
{
ExtLowHighBuffer[i]=haHigh;
ExtHighLowBuffer[i]=haLow;
}
ExtOpenBuffer[i]=haOpen;
ExtCloseBuffer[i]=haClose;
}
//— done
return(rates_total);
}
//+——————————————————————+