Need help with Wilders indicator for MT

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Hello,
I have just started studying the MT programing and I am in need of a Wilders indicator.

That feature has been integrated into Amibroker AFL but may not be included into MT though I am unable to locate the code anywhere else.

Can you help me, please?

Your sincerely,
franta

In AmiBroker:

WILDERS- Wilder's smoothing

Moving averages, summation (AFL 1.4)

SYNTAX	wilders( ARRAY, periods )
RETURNS	ARRAY
FUNCTION	Calculates Wilder's average of the ARRAY using periods averaging range
EXAMPLE	wilders( close, 10 );

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Nobody?

Please, I need equivalent this Wilders from AFL to MQ4.

Metastock Function
Wilder's Smoothing -- syntax: wilders(data, periods)

Trademan Equivalent Indicator or Function
Absolute Value -- syntax: abs(data) abs(data)

Define wilders(data, periods) as
emov(parm1, 2*parm2-1)

MetaTrader?