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You can use ZoomToIndex()... but you can't use LastValue(Ref(BarIndex(),-10)... because with any bar index value you then have to obtain the DateTime() of that value... and since the DateTime() function doesn't provide values beyond the last visible bar at the RHS I don't believe this will work... I just tried it and it didn't.
As I said, I think the only way is construct DateTime() values beyond the RHS of the chart...
Good idea on the Static Variable counter flag...
Cheers
--- In amibroker@xxxxxxxxxxxxxxx, Herman <psytek@xxx> wrote:
>
> You can (untested) probably use the ZoomToIndex() function.
>
> The BI for the last bar is Lastvalue( barIndex())
> If you want then blank bars you can make that
> LastValue( ref(BarIndex(),-10);
>
> If you want a zoomwidth of 50 bars then the BI for the first bar in
> the Zoom range would be LastValue( ref(BarIndex(),-10-50);
>
> To zoom all windows at the same time use a staticvar counter for
> each chart. If the chart counter is less then the master zoom chart
> counter execute the zoom function and increment it the counter.
>
> gotta go...
>
> herman
>
> > This actually leads onto another question that you may be able to answer Herman...
>
> > If I wanted to change chart zoom across a number of charts from the
> > clicking of a button on one chart only, the obvious thing that comes
> > to mind is to set a static variable flag which would then execute the zoom routine on each chart...
>
> > The question is however, since I only want the zoom routine to
> > execute once (when the button is pressed) when exactly would I know
> > to change the static variable flag...? That is, when would I know
> > that the zoom of the last chart to be updated by AB had changed and
> > the static flag could now be reset...?
>
> > Any ideas...?
>
> > thanks
>
> > --- In amibroker@xxxxxxxxxxxxxxx, "Rob" <sidhartha70@> wrote:
> >>
> >> Actually Herman, I've been playing around with this, and one method that seems to work is to artificially construct some DateTime strings beyond the last bar...
> >>
> >> If you have other ideas, or indeed easy ideas for constructing those strings, I'd love to hear your views...
> >>
> >> TIA
> >>
> >> --- In amibroker@xxxxxxxxxxxxxxx, "Rob" <sidhartha70@> wrote:
> >> >
> >> > Hi Herman,
> >> >
> >> > Dennis has made me aware of your excellent work on programmable zoom functions in UKB. It's exactly what I've been looking for. Thanks.
> >> >
> >> > One question... the procedure that performs a 'right justify'... is there a way of getting that to justify including blank bars at on the right hand side of the chart...?
> >> >
> >> > I've been racking my brain and can't think of a way to do it...
> >> >
> >> > Many Thanks
> >> >
> >> > Rob
> >> >
> >>
>
>
>
>
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