MFI即為資金流量指數(shù)，對于該指標的構(gòu)筑和解釋與相對強弱指標相似，區(qū)別只是在于:成交量對于資金流量指數(shù)是重要的。代碼及解讀如下：

Params

Numeric Length(14);//聲明數(shù)值參數(shù)Length，初值14.//

Numeric SmoothLength(6);//聲明數(shù)值參數(shù)SmoothLength，初值6.//

Numeric OverSold(20) ;//聲明數(shù)值參數(shù)OverSold，初值20.//

Numeric OverBought(80) ;//聲明數(shù)值參數(shù)OverBought，初值80.//

Vars

NumericSeries TypicalPrice;//聲明數(shù)值序列變量TypicalPrice。//

NumericSeries MoneyFlow;//聲明數(shù)值序列變量MoneyFlow。//

NumericSeries PMoneyFlow;//聲明數(shù)值序列變量PMoneyFlow。//

Numeric PType;//聲明數(shù)值變量PType。//

Numeric SumMoneyFlow; //聲明數(shù)值變量SumMoneyFlow。//

NumericSeries MFIValue;//聲明數(shù)值序列變量MFIValue。//

Numeric SumPMoneyFlow;//聲明數(shù)值變量SumPMoneyFlow。//

Numeric MFIAvg;//聲明數(shù)值變量MFIAvg。//

Begin

TypicalPrice = (High+Low+Close)/3;//開盤價、最高與最低三個價格的均值。//

PType = IIF(TypicalPrice >= TypicalPrice[1], 1, 0);//當前的k線的均值大于等于前一k線的均值的，則取值為1，否則取值0.//

MoneyFlow = Vol * TypicalPrice;//成交量乘以均值，即可得變量MoneyFlow值。//

PMoneyFlow = MoneyFlow*PType;//把上面求得的兩值相乘了。//

SumMoneyFlow = SummationFC(MoneyFlow, Length);//代入相應(yīng)數(shù)值與周期，快速求和，即可得SumMoneyFlow總值。//

SumPMoneyFlow = SummationFC(PMoneyFlow, Length);//同理，代入相應(yīng)數(shù)值與周期，快速求和，得到SumPMoneyFlow總值。//

If(SumMoneyFlow <> 0)//假如總值SumMoneyFlow不等于0.//

MFIValue = SumPMoneyFlow/SumMoneyFlow*100;//則把兩總值相除，再乘以100，即得MFIValue值。//

Else//總值等于0的。//

MFIValue = 0; //變量MFIValue賦值為0.//

MFIAvg = AverageFC(MFIValue, SmoothLength);//把相應(yīng)數(shù)值與周期6代入函數(shù)AvergeFC，求得均值，即為MFIAvg值。//

PlotNumeric("MFI",MFIValue);//畫線MFI，值為MFIValue值。//

PlotNumeric("MFI Avg",MFIAvg);//畫線MFIAvg，值為MFIAvg值。//

PlotNumeric("超買",OverBought);//畫線超買，值為80.//

PlotNumeric("超賣",OverSold);//畫線超賣，值為20.//

End