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Not so. Try this simple code:
test = 999; printf (WriteVal(test));
Test remains at 999 forever unless you change it.
----- Original Message -----
From: "sibir61" <sibir61@xxxxxxxxx>
To: <amibroker@xxxxxxxxxxxxxxx>
Sent: Tuesday, September 27, 2005 9:40 AM
Subject: [amibroker] Re: Newbie question
> Hi Graham,
>
> I will try to rephrase/simplify my question. Say you have event A
> taking place at random time T1 and event B taking place at random
> time T2. There is no technical indicator to connect the two - both
> are just formations (could happen at any time). I place a fixed buy
> stop once A AND B = TRUE for the rest of the day. That buy stop does
> not get activated till sometime later in the day if ever, again
> formations. AFL evaluates code you write every time for each new bar,
> which means that there is no way of passing fixed info from one bar
> to another, because on every bar every member of the array has to be
> reassigned again - x=ref(x,-1) does not work because compiler
> complains about x not being initialized (correct).
>
> To summarize my question: if i evaluate stocks on a 1 min bar how do
> I store a value I calculate at 10AM on a 1 min bar to keep that value
> persistent for the rest of the trading day. AFL resets all variables
> on each bar, which prevents me from storing any values.
>
> int x = 0;
> foreach(Bar bar in minuteBars){
> if(bar.Time()=="10AM")
> x = bar.High()+magicNumber;
> if(bar.High()>x && x!=0)
> Buy = 1;
> }
> AFL from my understanding has a limited number of nested scopes.
> It seems that in AFL there is no way to define x the way it is done
> in here because AFL assumes that you can only write code within that
> foreach loop - AFL evaluater acts as a loop, which if true is really
> really bad.
>
> Are there any workarounds?
>
> Thanks.
>
>
> --- In amibroker@xxxxxxxxxxxxxxx, Graham <kavemanperth@xxxx> wrote:
>> Steve
>> For a starter at AFL seems like you want to jump in te deep end. I
>> would suggest you start with one item at a time rather than try to
>> code everything at first attempt
>>
>> to define the value of a variable just use
>> VariableName = 10;
>> The value will not change throughout the entire AFL, unless you give
>> it a different value later on within the AFL
>> You may only need to use the function function if you really need to
>> define a new custom function for multiple uses with different inputs
>>
>> To use an array value at a certain time (or when any other specific
>> occurence is true) use the function Valuewhen
>>
>> Other than that am confused on what your problems are.
>>
>> --
>> Cheers
>> Graham
>> AB-Write >< Professional AFL Writing Service
>> Yes, I write AFL code to your requirements
>> http://e-wire.net.au/~eb_kavan/ab_write.htm
>>
>>
>> On 9/24/05, sibir61 <sibir61@xxxx> wrote:
>> > Hi there,
>> >
>> > I am a newbie with a system, so I have a couple of questions about
>> > coding up price formation based trading system. I need to set up
> global
>> > variables that are global not for a current bar, but for a whole
> system
>> > and/or for a certain time period: I would like to calculate buy
> stop
>> > price at 10AM everyday once and use that number for the rest of
> the
>> > day. I was not able to find any meaningful way to do so - the
> UserGuide
>> > refers to global variables vs local variables within functions -
> still
>> > for 1 bar, regardless of the timeframe. I, however, need global
>> > variables defined within the entire execution cycle. How do I do
> that?
>> >
>> > More detailed example: I prefilter stocks based on previous day's
> ATR
>> > action. If it satisfies my condition then I sit tight the next
> day till
>> > 10AM when I determine today's price target based on H/L values.
> Then I
>> > combine the two conditions/prices to determine the entry buy
> stop. This
>> > is done just once for a day - not on every bar. Profit target is
> also
>> > just an entry price + certain range = fixed target during the
> day. I am
>> > having difficulty convincing Amibroker to store those values and
> not
>> > recalculate them on every bar. I trade on a 1 min bar time range.
>> >
>> > Steve
>> >
>
>
>
>
>
> Please note that this group is for discussion between users only.
>
> To get support from AmiBroker please send an e-mail directly to
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>
> For other support material please check also:
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>
>
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