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Hello,
By default you are operating on ARRAYS not on single values.
A must-read for everyone starting out:
http://www.amibroker.com/guide/h_understandafl.html
In short: RECURSIVE calculations need a FOR loop and [] operator
http://www.amibroker.com/guide/keyword/for.html
"For" loop and array subscript operator [] gives you acces
to INDIVIDUAL values.
Best regards,
Tomasz Janeczko
amibroker.com
----- Original Message -----
From: "Graham Johnson" <grahamj@xxxxxxxxxxxxxxxxxxxxx>
To: <amibroker@xxxxxxxxxxxxxxx>
Sent: Sunday, January 27, 2008 8:00 AM
Subject: [amibroker] Re: Identify bar for actual Buy
> Hi
>
> The bottom line with this is that I want to be able to set a stop and
> have control over it.
>
> After thinking it through, I decided that the first step was to set
> the stop for the first Buy signal and keep it at the same value until
> a Sell signal and then set it to 0 again.
>
> Seemed like a great theory but the stop value is reset at each bar
> and therefore does not maintain a constant value. Maybe it is a
> mindset thing - my professional experience was with procedural
> languages and AFL taxes my thinking processes sometimes - maybe
> something about teaching an old dog new tricks...
>
> Anyway, the snippet of code for setting the stop is as follows
>
> Buy = Ref(vaValidEntry,-1) AND Low <= Ref(vaLimitEntry, -1);
> BuyPrice = Min(Open, Ref(vaLimitEntry, -1));
> vaIStopVal = ATR(vISATRPer) * vISMult;
> vaInitStop = 0;
> vaInitStop = IIf(((Buy == 1) AND (Ref(vaInitStop, -1) == 0)) ,
> BuyPrice - (Ref(vaIStopVal, -1)), Ref(vaInitStop, -1));
> _TRACE(" | buy: " + Buy + " | stop: " + vaInitStop + " | PrevStop: "
> + Ref(vaInitStop, -1));
>
> Any ideas as to where I've gone wrong and why it is resetting the
> value each bar, please.
>
> Graham
>
>> I'm sure that a solution for this has been on the forum, but -
> after
>> much searching......
>>
>> Code is for a Long system that does not pyramid.
>>
>> I am looking to manually code the disaster stop, so need to be able
> to
>> set the stop on the day that the trade is actually entered, and not
>> have the water muddied by subsequent signals that are not taken
> because
>> the system does not pyramid.
>>
>> I know that the ApplyStop function is available, but I need to
> acquire
>> the technique for controlling stops programatically.
>>
>> Hopefully, this is clear.
>>
>> Graham
>>
>
>
>
>
> Please note that this group is for discussion between users only.
>
> To get support from AmiBroker please send an e-mail directly to
> SUPPORT {at} amibroker.com
>
> For NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG:
> http://www.amibroker.com/devlog/
>
> For other support material please check also:
> http://www.amibroker.com/support.html
>
> Yahoo! Groups Links
>
>
>
Please note that this group is for discussion between users only.
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