[amibroker] AIQ Trading Bands to AFL

["hardrockgeo" <gene4debra@xxxxxxx>]

AIQ Trading Bands to AFL 

Can anyone please transform this AIQ code from S&C Mag to AFL, if u 
can, so it can be cut & pasted.

Thanks in advance
g
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Here is the AIQ TradingExpert Pro code from Stocks & Commodities 
Magazine for plotting both kinds of bands. 

Aiq Eds code for Average True Range and Standard Deviation Bands


Define AvgPd 20.

!StDev Bands
StdDev is Sqrt(Variance([close],AvgPd)).
Stdh is ExpAvg([close],AvgPd) + 2 * StdDev.
Stdl is ExpAvg([close],AvgPd) - 2 * StdDev.

TrueRange is
max([high]-[low],max([high]-val([close],1),val([close],1)-[low])).

AvgTrueRange is SimpleAvg(TrueRange,AvgPd).

!ATR Bands
Stdha is ExpAvg([close],AvgPd) + 2 * AvgTrueRange.
Stdla is ExpAvg([close],AvgPd) - 2 * AvgTrueRange.

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