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How about "File Input/Output functions" and "Date/Time"
Can you not write the variable / data to a file and read it from the
file based on time of the day?
I am asking because I need something like that too
TaMeR
sibir61 wrote:
> I'll try static variables and valuewhen(). Thanks for the pointer.
>
> Is it correct to assume that I can reassign static variables at will?
>
> --- In amibroker@xxxxxxxxxxxxxxx, "Charles Stangor"
> <cstangor232@xxxx> wrote:
>
>>OK. I think you might need the valuewhen() function or a static
>
> variable
>
>>for that.
>>
>>----- Original Message -----
>>From: "sibir61" <sibir61@xxxx>
>>To: <amibroker@xxxxxxxxxxxxxxx>
>>Sent: Tuesday, September 27, 2005 10:06 AM
>>Subject: [amibroker] Re: Newbie question
>>
>>
>>
>>>Correct, it remains the same because you reassign it on every bar.
>>>But you if you have test = 999 + bar.minute() - look what that
>
> does.
>
>>>Now assume that my buy stop can only be calculated once and never
>>>again - change bar.minute() to function that generates one value
>
> at
>
>>>10AM and is never called again - now test variable would be in
>>>trouble.
>>>
>>>--- In amibroker@xxxxxxxxxxxxxxx, "Charles Stangor"
>>><cstangor232@xxxx> wrote:
>>>
>>>>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@xxxx>
>>>>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
>>>>>SUPPORT {at} amibroker.com
>>>>>
>>>>>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.
>>>
>>>To get support from AmiBroker please send an e-mail directly to
>>>SUPPORT {at} amibroker.com
>>>
>>>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.
>
> To get support from AmiBroker please send an e-mail directly to
> SUPPORT {at} amibroker.com
>
> For other support material please check also:
> http://www.amibroker.com/support.html
>
>
> Yahoo! Groups Links
>
>
>
>
>
>
>
>
--
Cheers,
TaMeR
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