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The trace statement gives the following error message that I get:
[2392] Bar: 2890 StartDateBar {EMPTY} C[Bar] {EMPTY}
I don't understand why it works on loadup then it fails upon changes
to paramdate.
--- In amibroker@xxxxxxxxxxxxxxx, "tipequity" <l3456@xxx> wrote:
>
> Thanks Graham for your reply. I still get an error message when I
> click on the chart or change the dates. TIA
>
> --- In amibroker@xxxxxxxxxxxxxxx, Graham <kavemanperth@> wrote:
> >
> > You might be choosing dates that do not appear in the symbol data
> >
> > StartDateBar = LastValue(ValueWhen ( DateNum () <=
> StartDate,BarIndex ()));
> > EndDateBar = LastValue(ValueWhen( DateNum () <= EndDate, BarIndex
> () ));
> >
> > --
> > Cheers
> > Graham Kav
> > AFL Writing Service
> > http://www.aflwriting.com
> >
> >
> >
> > 2008/7/10 tipequity <l3456@>:
> > > I have written the following code to plot % chg in price of
ticker
> > > from starting date to ending date (using parameters). I have to
> > > problems:
> > > 1. when I change the date it crashes, point to from date in the
> title.
> > > 2. when it works, it draws a horizontal line from first visible
> bar
> > > to the starting date. I want to eliminate this line. TIA
> > >
> > > dt=DateTime();
> > > StartDate = ParamDate ( "Start Date" , Date () );
> > > EndDate = ParamDate ( "End Date" , Date () );
> > > StartDateBar = LastValue(ValueWhen ( DateNum () == StartDate,
> > > BarIndex ()));
> > > EndDateBar = LastValue(ValueWhen( DateNum () == EndDate,
BarIndex
> > > () ));
> > >
> > > Ticker = 0;
> > >
> > > for (Bar = StartDateBar; Bar < EndDateBar-1; Bar++)
> > > {
> > > ticker[bar] = 100 *(( C[Bar] - C[ StartDateBar ])/C
> [StartDateBar ]);
> > > //_TRACE("Bar: " + Bar + " StartDateBar " + C[ StartDateBar ]
+ "
> C
> > > [Bar] " + C[Bar]);
> > > }
> > > Plot( ticker, Name(), colorBlue );
> > >
> > > SetChartOptions( 1, chartShowDates );
> > > PlotGrid( 0, colorYellow );
> > > Title = "From: " + WriteVal(dt[StartDateBar],formatDateTime) + "
> > > To: " + Date() + " - " + "{{VALUES}}" + "\n" +
> > > Interval(2) + " - " + _DEFAULT_NAME();
> > >
> > >
> > > ------------------------------------
> > >
> > > 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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