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Triple or Double Exponential Moving Average (DEMA or TEMA) for Metastock
matz
about 9 years ago
Metastock

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Tags:
metastock, moving average

DEMA and TEMA are unique smoothing indicators developed by Patrick Mulloy. TEMA was originally introduced in the January 1994 issue of Technical Analysis of Stocks & Commodities magazine. The inherit problem with normal moving averages is the lag that increases as the moving average length increases. One solution to reduce this lag is a modified version of exponential smoothing with less lag time. TEMA is an acronym that stands for Triple Exponential Moving Average. HOWEVER, the name of this smoothing technique is a bit misleading in that it is not simply a moving average of a moving average of a moving average. It is a unique composite of a single exponential moving average, a double exponential moving average, and a triple exponential moving average that provides less lag than either of the three components individually.

Source: equismetastock[at]yahoogroups[dot]com

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{Plots either a DEMA or TEMA}
Plot:= Input("Display [1] Dema[2] Tema",1,2,2);
Period:= Input("What Period",1,250,10);
EMA1:= Mov(C,Period,E);
EMA2:= Mov(EMA1,Period,E);
EMA3:= Mov(EMA2,Period,E);
Difference:= EMA1 - EMA2;
DMA:= EMA1 + Difference;
TMA:=(3*(EMA1-EMA2))+EMA3;
If(plot=2,TMA,DMA);{end}

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