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--- In equismetastock@xxxxxxxxxxxxxxx, pumrysh <no_reply@xxx> wrote:
>
> Steve,
>
> I believe this is what you want.
>
> {Average True Range - Welles Wilder}
> {Written by Ton Maas-981225-Amsterdam-the Netherlands}
> {Found at EquisMetastock YahooGroups}
> {Formula:}
> PDS:=Input("Lookback Periods",1,999,10);
> TR1:=Abs(H-L);
> TR2:=Abs(Ref(C,-1)-H);
> TR3:=Abs(Ref(C,-1)-L);
> MX1:=Max(TR1,TR2);
> MX2:=Max(TR1,TR3);
> MX3:=Max(TR2,TR3);
> MXTRS:=If(MX1>MX2,
> If(MX1>MX3,MX1,
> If(MX2>MX3,MX2,MX3)),MX2);
> WATR:=Wilders(MXTRS,pds);
> WATR;
>
>
> Wilders smoothing is actually nothing more than a shortened lookback
> period version of an exponential moving average. Like this:
> Mov(Data,pds*2-1,E)
>
>
> Hope this helps,
>
> Preston
The code can be simplified:
PDS:=Input("Lookback Periods",1,999,10);
TR1:=Abs(H-L);
TR2:=Abs(Ref(C,-1)-H);
TR3:=Abs(Ref(C,-1)-L);
tr:=Max(Max(TR1,TR2),TR3);
WATR:=Wilders(tr,pds);
WATR;
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