Thomas/WaveMechanic,
Thanks for the input - very helpful. Part of my confusion is that my
understanding was that "firstvisiblebarindex" returns the barindex
value of the first bar visible, and that "firstvisiblebar" returns a
"1". If "firstvisiblebarindex" returns a "1", how does it differ from
"firstvisiblebar"?
Also, haven't gotten this to work yet. When I run an Exploration on
RedHat (RHAT), for example, I get a "HighValue" of 143.12, for all
dates since 12/09/1999. This tells me that the "HighValue"
calculation is not restricted to "NumBars", but is applied across the
entire data history for RHAT.
There are, no doubt, several problems, but it is likely that I still
don't have the NumBars calculation correct. Unless I can get that
straight the rest certainly won't work.
Following is what I currently have, based on your joint comments:
Begin=ValueWhen(Status("firstvisiblebarindex"),BarIndex());
End=ValueWhen(Status("lastvisiblebarindex"),BarIndex());
NumBars=LastValue(End-Begin+1);
HighValue=HHV(C,NumBars);
TestValue=0.9*HighValue;
Plot(C,"Close",colorLightGrey,styleHistogram|styleThick);
PlotGrid(LastValue(TestValue),colorDarkRed);
AddColumn(C,"Close",format=1.2);
AddColumn(HighValue,"HighValue",format=1.2);
AddColumn(TestValue,"TestValue",format=1.2);
AddColumn(NumBars,"NumBars",format=1.2);
Filter=1;
On a side note, it seems I've noticed that some, if not all, of the
"bar" statuscodes will not output to the Exploration window. Could it
be that the "NumBars" calculation is correct but is outputting a "1"
or "0" since it's using codes that are not used in the Exploration module?
If you have any ideas, please let me know.
Thanks,
Wayne
--- In [email protected], "wavemechanic" <[EMAIL PROTECTED]> wrote:
>
> Wayne:
>
> Your numBars is "backwards" and needs to subtract Begin from End
otherwise you have a negative number. Also, the only place that you
need LastValue is in the HighValue line. So this should work:
>
> numBars = (end - begin + 1);
> highValue = LastValue(C, numBars);
> testValue = .9 * highValue;
>
>
>
> ----- Original Message -----
> From: "wlandry01" <[EMAIL PROTECTED]>
> To: <[email protected]>
> Sent: Tuesday, August 29, 2006 9:19 AM
> Subject: [amibroker] Need Help With FirstVisibleBarIndex
>
>
> >
> > Hi,
> >
> > I'm trying to set up an indicator that will calculate the HHV for the
> > current chart so that I can do a PlotGrid at 90% of that highest value
> > shown on the chart. I thought the following would do this:
> >
> > //Calculate the Number of Bars Shown on the Current Chart
> > Begin=Status("firstvisiblebarindex");
> > End=Status("lastvisiblebarindex");
> > NumBars=LastValue(Begin-End+1);
> >
> > //Determine the HHV of the Chart and Calculate 90% of that Value
> > HighValue=HHV(C,NumBars);
> > TestValue=0.9*LastValue(HighValue);
> >
> > //Plot the Result
> > PlotGrid(TestValue,ColorDarkRed);
> >
> > It appears, however, that the "Begin" and "End" values are not
> > returning the index values associated with the chart. As far as I can
> > tell, I'm getting "1" for all values. I can't for the life of me
> > understand what the problem might be.
> >
> > Any help would be greatly appreciated.
> >
> >
> > Wayne
> >
> >
> >
> >
> >
> >
> > 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 other support material please check also:
> > http://www.amibroker.com/support.html
> >
> >
> > Yahoo! Groups Links
> >
> >
> >
> >
> >
> >
> >
> >
> > --
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08/25/06
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>
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