Re: [amibroker] how to improve loop speed

[Panos Boufardeas <panosbouf@xxxxxxxxxxx>]

Thank you Tomasz

So what I can see form your reply, this example here is correct.
But must be a way for a loop to calculate only the last X bars, and not all 
of theme

Thank you
Panos


At 08:01 PM 27-11-2008 27-11-2008, you wrote:

>Hello,
>
>Move ALL array functions OUTSIDE of loop!
>
>Inside the loop there should be only NON-array functions.
>
>// THIS MUST BE OUTSIDE THE LOOP !!!!!!
>
>Q=Param( "% Change",1.50,.25,14 ,0.25);
>
>Z= Zig(C,q ) ;
>
>HH=((Z<Ref(Z,- 1) AND Ref(Z,-1) > Ref(Z,-2)) AND (Peak(z,q,1 )
>
> >Peak(Z,q,2 )));
>
>LL=((Z>Ref(Z,- 1) AND Ref(Z,-1) < Ref(Z,-2)) AND (Trough(Z,q,1 ) 
><Trough(Z,q,2 )));
>
>dist = 0.5*ATR (20);
>
>for( i = 0; i < BarCount; i++ )
>{
>
>// ONLY THIS should be inside the loop
>if( HH [i]) PlotText( "HH"+ "\n"+H[ i ], i, H[ i ]+dist[i], colorGreen );
>if( LL [i] ) PlotText( ""+L[ i ]+"\nLL", i, L[ i ]-dist[i], colorRed );
>}
>
>Nothing more is needed.
>
>Best regards,
>Tomasz Janeczko
>amibroker.com
>----- Original Message -----
>From: "Panos Boufardeas" 
><<mailto:panosbouf%40freemail.gr>panosbouf@xxxxxxxxxxx>
>To: <<mailto:amibroker%40yahoogroups.com>amibroker@xxxxxxxxxxxxxxx>
>Sent: Thursday, November 27, 2008 6:45 PM
>Subject: [amibroker] how to improve loop speed
>
>Hi
>
>I am curious to find out how to make a loop to run from firstvisiblebar
>
>I think I need to write something like the following . but I don't know how
>
>lvb = Status("lastvisiblebar");
>
>fvb = Status("firstvisiblebar");
>
>for( i = 0; i < ??? ; i++ )
>
>{
>
>I have an example here that executes very slowly in live intra day chart
>
>Can you tell me please how I can correct this example ?
>
>Q=Param( "% Change",1.50,.25,14 ,0.25);
>
>Z= Zig(C,q ) ;
>
>HH=((Z<Ref(Z,- 1) AND Ref(Z,-1) >
>
>Ref(Z,-2)) AND (Peak(z,q,1 )
>
> >Peak(Z,q,2 )));
>
>LL=((Z>Ref(Z,- 1) AND Ref(Z,-1) < Ref(Z,-2)) AND (Trough(Z,q,1 )
>
><Trough(Z,q,2 )));
>
>dist = 0.5*ATR (20);
>
>for( i = 0; i < BarCount; i++ )
>
>{
>
>if( HH [i]) PlotText( "HH"+ "\n"+H[ i ], i, H[ i
>
>]+dist[i], colorGreen );
>
>if( LL [i] ) PlotText( ""+L[ i ]+"\nLL", i, L[ i
>
>]-dist[i], colorRed );
>
>}
>
>Plot(C,"",IIf(C>O,colorGreen,colorRed),styleCandle);
>
>Thank you
>
>Panos
>
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------------------------------------

**** IMPORTANT ****
This group is for the discussion between users only.
This is *NOT* technical support channel.

*********************
TO GET TECHNICAL SUPPORT from AmiBroker please send an e-mail directly to 
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*********************

For NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG:
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