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yes Rob, perhaps this can help you:
http://www.amibroker.org/userkb/2007/05/07/date-arithmetic/
herman
> 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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> **** IMPORTANT PLEASE READ ****
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