DEMA (Double exponential moving average) formula is
DEMA = ( 2 * EMA(n)) - EMA(EMA(n))
where n= period
The first step to calculating DEMA is to calculate the EMA. Then, run an EMA calculation again, using the result of the first EMA calculation (EMA(n) as a function of the equation EMA(x) ). Finally, subtract the result from the product of 2 * EMA(n).
Dema trading strategy is buy when DEMA crosses over EMA from below and
sell when DEMA crosses below EMA from above.
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buy code :
SET A = EMA(CLOSE,9)
SET B = EMA(A,9)
SET C = (2 * A) - B
CROSSOVER(C,A)
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sell code :
SET A = EMA(CLOSE,9)
SET B = EMA(A,9)
SET C = (2 * A) - B
CROSSOVER(A,C)
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the above code is not working