MACD知识入门

淩亂°似流年 2021-07-04 14:38 453阅读 0赞

百度百科对MACD的定义：

*  MACD称为指数平滑移动平均线，是从双指数移动平均线发展而来的，由快的指数移动平均线（EMA12）减去慢的指数移动平均线（EMA26）得到快线DIF，再用2×（快线DIF-DIF的9日加权移动均线DEA）得到MACD柱。MACD的意义和双移动平均线基本相同，即由快、慢均线的离散、聚合表征当前的多空状态和股价可能的发展变化趋势，但阅读起来更方便。

## EMA ##

*  EMA即英文Exponential Moving Average的缩写，即指数移动平均指标，也叫EXPMA指标。
 *  EMA的定义为，当日EMA等于当日收盘价减去昨日EMA之后乘以平滑系数，然后再加上昨日的EMA

EMA(N) = C * 2/(N+1) + EMA' * (N-1)/(N+1)

由上面的公式可以得出EMA12和EMA26的计算公式

EMA(12) = C * 2/(12+1) + EMA' * (12-1)/(12+1)
    
    EMA(26) = C * 2/(26+1) + EMA' * (26-1)/(26+1)

假设要计算从股票上市起第n日的EMA，计为EMAn则有：

![4540475895b0447e39157b0deb93e820.gif][]

平滑系数：![58b2a2d3f07b5bebdade24dd881b1552.gif][]

最终精简公式为：

![5512c4ed70eb1a3ac1d0576569d49375.gif][]

## DIF ##

DIF=EMA（12）- EMA（26）

新股上市首日，其首日DIF为0。从次日开始，全部都用当天的EMA（12）- EMA（26）得到当天的DIF。

# DEA #

DEA通用公式：

![f5fa8f520f39f6875029fe4768df653b.gif][]

MACD指标公式及其分解-网上其他资料几乎全是错的  
DEA’表示昨日的DEA。

这个公式可以模仿普通EMA的展开式展开，这里不再详述。

默认的DEA即DIF线的9日指数平滑移动平均线，也可以表示为MEA(DIF，9)。

![32c96bd9d8d169e1dd7949f22347b5dc.gif][]

MACD指标公式及其分解-网上其他资料几乎全是错的  
新股上市首日，其首日DEA为0。从次日开始，由于首日DEA为0，因此次日的DEA=0.2\* DIF+0=0.2*DIF。后续日子的DEA可以套用0.2*DIF + 0.8\* DEA’计算。

## BAR ##

BAR=2* (DIF-DEA)

**\[引用\]**

1.  [关于MACD公式介绍][MACD]

## MACD js实践 ##

MACD.js

MACD.html

<head>
        <title>MEDA</title>
        <script src="data.js"></script>
        <script src="MEDA.js"></script>
        <script src="https://cdn.hcharts.cn/highcharts/highcharts.js"></script>
    </head>
    <body>
    
        <div id="container" style="min-width:800px;height:400px"></div>
    <script type="text/javascript"> let num = 1.123; alert(typeof num.toFixed(2)); let EMAS = EMASL(json,12); let EMAL = EMASL(json,26); // console.log(EMAS); // console.log(EMAL); let dif = DIF(json); console.log(dif); let dea = DEA(json,9); console.log(dea); let bar = BAR(json); // console.log(bar); let time = []; for(let i=0;i<json.length;i++){ time.push(json[i].trddate); } var chart = new Highcharts.Chart('container', { // 图表初始化函数，其中 container 为图表的容器 div chart: { type: 'line', backgroundColor:'#323749', height: '470px' //指定图表的类型，默认是折线图（line） }, title: { text: 'MACD' //指定图表标题 }, xAxis: { lineColor: '#5C6475', lineWidth: 0.5, tickColor:'#5C6475', categories:time }, yAxis: { title: { text: 'MACD' //指定y轴的标题 }, gridLineColor: '#5C6475', gridLineWidth: 0.5 }, series: [{ //指定数据列 name: 'DIF', //数据列名 data: dif, // color:'#ffff00', color:'#ffffff', marker: { enabled: false, } //数据 }, { name: 'DEA', data: dea, color:'#ffff00', marker: { enabled: false, } } ,{ name:'BAR', data:bar, color:'#ffffff', marker: { enabled: false, } } ] }); </script>
    </body>
    </html>

data.js

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