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Hello,
If you were reading the list via e-mail (not Yahoo web) you should have it.
Anyway I have put the picture on AB server - the picture is here:
http://www.amibroker.com/gifs/barindex.gif
And of course there is a way to get all bars:
a) AA currently ALWAYS uses all bars so BarCount represents that
b) in chart the situation is different, but you can request all bars using
SetBarsRequired function http://www.amibroker.com/f?setbarsrequired
or using OLE interface (Count property of Quotations object
http://www.amibroker.com/guide/objects.html
Best regards,
Tomasz Janeczko
amibroker.com
----- Original Message -----
From: "vlanschot" <vlanschot@xxxxxxxxx>
To: <amibroker@xxxxxxxxxxxxxxx>
Sent: Thursday, April 17, 2008 3:39 PM
Subject: [amibroker] Re: Barcount vs Barindex()
> Thx Tomasz,
>
> Although I don't receive it, I get the picture. However, using
> LastValue should mean that WITHIN the same chart-view (i.e. visible
> area), choosing another bar via the Selector Line should not change
> the Maxbar result?
>
> It's shocking I don't get this after so many years. And I'm now
> wondering there is probably no way to get the number of ALL bars (the
> full history) unless you use all quotes in AA/the chart, or is there?
>
> PS
> --- In amibroker@xxxxxxxxxxxxxxx, "Tomasz Janeczko" <groups@xxx>
> wrote:
>>
>> Hello,
>>
>> I am sorry, one correction is needed to previously posted picture.
>> Note that BarIndex represents actual QUOTES. So first quote will
> ALWAYS have index of ZERO.
>> Now the AFL array can be MOVING over available quotes if you are
> shifting visible area using scroll bar.
>> As you can see in this example, the barindex() function in current
> execution will give you numbers starting from 11 upto 23 because
> current
>> visible area covers only part of available quotes.
>>
>>
>>
>>
>> Best regards,
>> Tomasz Janeczko
>> amibroker.com
>> ----- Original Message -----
>> From: Tomasz Janeczko
>> To: amibroker@xxxxxxxxxxxxxxx
>> Sent: Thursday, April 17, 2008 3:11 PM
>> Subject: Re: [amibroker] Barcount vs Barindex()
>>
>>
>> Hello,
>>
>> Best regards,
>> Tomasz Janeczko
>> amibroker.com
>> ----- Original Message -----
>> From: "vlanschot" <vlanschot@xxx>
>> To: <amibroker@xxxxxxxxxxxxxxx>
>> Sent: Thursday, April 17, 2008 2:05 PM
>> Subject: [amibroker] Barcount vs Barindex()
>>
>>
>> >I always thought that Barcount would give me the number of bars,
> as
>> > in "LastValue", available for the current active array,
> according to
>> > the manual:
>> >
>> > " . . . BarCount is a numeric variable that holds just one
> number
>> > (the count of elements in array). . ."
>> >
>> > as well as:
>> >
>> > " . . . if you choose range: "all quotes" in AA
>> > SelectedValue function is equivalent to array[ BarCount -
> 1 ] . . ."
>> >
>> > Why is it then that if I use the following code:
>> >
>> > MaxBar=BarCount-1;
>> > ChBar=LastValue(Min(MaxBar,SelectedValue(BarIndex())));
>> >
>> > printf("\nChBar: " + NumToStr(ChBar,1.0));
>> > printf("\nMaxBar: " + NumToStr(MaxBar,1.0));
>> >
>> > I get the same number for ChBar and Maxbar as output in my
>> > Interpretation for a randomly selected bar in the chart:
>> >
>> > ChBar: 640
>> > MaxBar: 640
>> >
>> > If I select another bar, the numbers are again the same:
>> >
>> > ChBar: 881
>> > MaxBar: 881
>> >
>> > Should MaxBar not reflect a fixed number, namely (LastValue
> (BarIndex
>> > ())- "Blank Bars"?
>> >
>> > Or do I need to re-interpreted Barcount as:
>> >
>> > Barcount = SelectedValue(BarIndex())+1; ????
>> >
>> > I use AB 5.08
>> >
>> > Thx,
>> >
>> > PS (Deja-vu-ing, feeling like a beginner again)
>> >
>> >
>> >
>> > ------------------------------------
>> >
>> > 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.
>
> 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
>
>
>
------------------------------------
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