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At 05:21 PM 6/26/01 -0000, you wrote:
>I believe I have a description of the mechanism somewhere and will send
>it to you once I find it. If I recall correctly you must use external
>programming to do it, i.e. DLL.
>>>It uses an If Then Else structure.<<<
You can use nested if statements:
If(Expression1, Then DA1, If(Expression2, Then DA2, Else DA3))
Herman.
>Yngvi
>hardy@xxxxxxxxxxxxx
>
>-----Original Message-----
>From: owner-metastock@xxxxxxxxxxxxx
>[mailto:owner-metastock@xxxxxxxxxxxxx]On Behalf Of Glen Wallace
>Sent: Tuesday, June 26, 2001 15:41
>To: MetaStock listserver
>Subject: Re: Welles Wilder's Parabolic SAR
>
>
>Thanks for the LeBeau reference, Lionel. The formula, from Computer
>Analysis of the Futures Market, is:
>
>SARt = SARt-1 + (AF * (EPprior - SARt-1))
>
>Where:
>SARt = current SAR (stop and reverse)
>SARt-1 = prior SAR
>EP = extreme price
>AF = acceleration factor. The AF normally starts at 0.02 and steps up
>in increments of 0.02 to a maximum of 0.20.
>
>The difficulty with the MetaStock canned version is that the parabolics
>start whenever the prior stop is violated, and not at your entry point.
>
>The code for an entry-point-dependent variation of the parabolic will be
>a bit tricky because of the awkwardness in defining the entry price in
>MetaStock. I'll post the code to the list in due course.
>
>Regards.
>
>
>----- Original Message -----
>From: "Lionel Issen" <lissen@xxxxxxxxxxxxxx>
>To: <metastock@xxxxxxxxxxxxx>
>Sent: Monday, June 25, 2001 5:20 PM
>Subject: Re: Welles Wilder's Parabolic SAR
>
>> Glen:
>> There are several books that have it. Look at Chuck Lebeau or Perry
>Kaufman.
>> I think that you might find it easier to use the Metastock version
>> Lionel Issen
>> lissen@xxxxxxxxxxxxxx
>>
>>
>>
>> ----- Original Message -----
>> From: "Glen Wallace" <gcwallace@xxxxxxxx>
>> To: "MetaStock listserver" <metastock@xxxxxxxxxxxxx>
>> Sent: Monday, June 25, 2001 6:04 PM
>> Subject: Welles Wilder's Parabolic SAR
>>
>> > Does anyone have the formula for Welles Wilder's Parabolic
>> > SAR or, better yet, the MetaStock code for it?
>> >
>> > I'm trying to develop an exit that adapts to accelerating price
>> > moves and protects profits a bit better than something like
>> > Chuck LeBeau's Chandelier exit.
>> >
>> > Thanks.
>
>
>
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