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Re: [amibroker] Barcount vs Barindex()



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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 -----
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@xxxxxxxxx>
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)
>
>
>
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