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Yes
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<FONT face=Arial color=#0000ff
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<FONT face=Arial color=#0000ff
size=2>herman
<FONT face=Tahoma
size=2>-----Original Message-----From: see_change007
[mailto:cvt@xxxxxxxxxxxxxx]Sent: Monday, August 09, 2004 9:19
AMTo: amibroker@xxxxxxxxxxxxxxxSubject: [amibroker] Re:
Static VariablesOk So if I want to
use X=n in a formula , I don't need to worry about it interacting with x's
defined in other forumulars. :) Correct ?See
Change--- In amibroker@xxxxxxxxxxxxxxx, "Herman van den
Bergen" <psytek@xxxx> wrote:> InLine,,,>
-----Original Message-----> From: see_change007
[mailto:cvt@xxxx]> Sent: Monday, August 09, 2004 8:47
AM> To: amibroker@xxxxxxxxxxxxxxx>
Subject: [amibroker] Re: Static Variables> >
> Just want to make sure I 'm correct in one thing.>
> If I define X = n at the begining of a formular then X is
a static> variable. X = n is a normal afl variable, to
make it Static you have to> use StaticVarSet() if you define it at
the begin of the code containing the> assignment then it will be
redefined each time this code runs regardless of> what values may
have been assigned to it before from other places; i.e. it> would
function locally.> > And if I'm using the same
symbols eg x to represent variables in> different
indicators, even if the indicators may not be in use at>
one particular time on active charts , the settings in one
one> formular may interact with other forumulars containing
the same> formular.> > I do not
know to what extend invisible indicators are executed... i> suppose
they are not however they may collect prices in RealTime... I
don't> know exactly what happens here, you could try it and see what
happens.> > However, visible indicators using
the same StaticVariable will each> execute and modify StaticVar
unless they are kept local (unique) with the> use of TJ's functions
or if they are locally initialized in each indicator,> i.e. with
Param()> > If I wanted to avoid this and was using a
static variable within one> indicator , I could set
that by coding> > If you only use it in one
indicator, yes. If you want to use the same> Static variables names
independently in many Indicators (use the same code> in different
places) but have them function locally then they should be kept>
unique and you should use TJ's functions.> >
StaticVarSet( ''x'', n );> > Is this correct
?> > See Change> > --- In
amibroker@xxxxxxxxxxxxxxx, "Herman van den Bergen">
<psytek@xxxx> wrote:> > Great suggestion Tomasz,
thanks for your input!> >> > This
will make things a lot simpler to code.>
>> > best regards,> >
herman.> >> >>
> -----Original Message----->
> From: Tomasz Janeczko
[mailto:amibroker@xxxx]> > Sent: Monday,
August 09, 2004 5:31 AM> > To:
amibroker@xxxxxxxxxxxxxxx> > Subject: Re:
[amibroker] Static Variables> > Importance:
High> >> >>
> Herman,> >>
> One thing: You don't need to worry about adding such
complex> coding all> > the
time.> > Instead you should use FUNCTIONS
that make life easier.> > If you want
"unique static" (per indicator) you can easily have>
them using> > these two functions:>
>> > procedure UnqStaticVarSet( name,
value )> > {>
> StaticVarSet( name + GetChartID(), value
);> > }>
>> > function UnqStaticVarGet( name
)> > {>
> return StaticVarGet( name + GetChartID()
);> > }>
>> > then use UnqStaticVarSet,
UnqStaticVarGet in your code> >>
> Best regards,> > Tomasz
Janeczko> >
amibroker.com> > ----- Original
Message -----> > From: Herman
van den Bergen> > To:
amibroker@xxxxxxxxxxxxxxx> >
Sent: Monday, August 09, 2004 3:28 AM>
> Subject: RE: [amibroker] Static
Variables> >>
>> > Ara,>
>> > You have to be careful
scoping the Static Variables,> >>
> 1) If you use same name static variables in
different> indicators then> > their
values can change from various sources. This is the case
if> you assign> > program derived
values, for example counters ,not in the case of>
param() see> > next...>
>> > 2) If the Static
variables are initialized inside the code> with
a> > Param() in EACH of the Indicators then in essence
you have> disabled the> > Global
nature of the Static Variable: this is so because the>
Static variable> > is reinitialized in each Indicator
separately each time the code> is
executed> > (on Refresh). This makes it immune to
whatever other code does.> >>
> 3) Static variables are truly Global, in contrast
to afl> variables> > declared Global
in afl, these are Global 'per' indicator. Static>
variables> > are Global per AmiBroker
Instance.> >>
> 4) If you want to restrict the scope of Static
variables to> the current> >
Indicator, to prevnt conflicing conditions, then you have to add
a> unique> > identifier to each code,
I use something like this:> >
ChartID = NumToStr(GetChartID(),1.0,False);>
> Reset = Param("Reset Static
variables",0,0,1,1);> >
StaticScope = Param("Scope (0:Local,1:Global) for> >
Chart#"+ChartID,1,0,1,1);> > if(
StaticScope ) Scope = ""; else Scope = ChartID;>
> ...>
> if( IsEmpty( StaticVarGet("TickCounter"+Scope))
OR Reset)> >
StaticVarSet("TickCounter"+Scope,0);>
> TickCount =
StaticVarGet("TickCounter"+Scope);>
>> > here a tickcounter is
made Local to the indicator containing> the code
to> > prevent interference with duplicate code in other
indicators. This> means i> > can
count ticks from fifferent stocks while using the SAME>
indicator.> >>
> Hope this helps,>
>> >
herman.> >> >>
>> >> >>
> -----Original
Message-----> > From: Ara
Kaloustian [mailto:ara1@xxxx]> >
Sent: Sunday, August 08, 2004 8:46 PM>
> To: AB-Main>
> Subject: [amibroker] Static
Variables> >>
>> >>
> I am having a hard time using static
variables....> >>
> Sometimes they work as expected ...
sometimes they don't ...> so my>
> expectation must obviously be questionable.>
>> > I am
assuming Static variables can be used anywhere that> normal
Number> > and String variables can be
used!> >>
> - in assignments:
StaticVarSet("Var",Value);>
> - in If Statements: if
(StaticVarGet("Var") == Value) ....>
> - in iif Statement: Test =
iif(StaticVarGet("Var")> >
==Value,True,False);> >>
> Is my assumption
correct?> >>
> Thanks>
>> >
Ara> >> >>
> Check AmiBroker web page
at:> > <A
href="">http://www.amibroker.com/>
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FAQ at:> > <A
href="">http://groups.yahoo.com/group/amibroker/files/groupfaq.html>
>> >> >>
>> > Check
AmiBroker web page at:>
> <A
href="">http://www.amibroker.com/>
>> > Check group
FAQ at:> > <A
href="">http://groups.yahoo.com/group/amibroker/files/groupfaq.html>
>> >> >>
>> >> > Check
AmiBroker web page at:> > <A
href="">http://www.amibroker.com/>
>> > Check group FAQ
at:> > <A
href="">http://groups.yahoo.com/group/amibroker/files/groupfaq.html>
>> >>
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ADVERTISEMENT> >>
>> >> >>
>> >
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