Wayne:
I just took a look at your code. For starters,
you are setting Begin and End to BarIndex() and, as a result numBars = 1.
I don't think that is what you want.
Bill
----- Original Message -----
From: "wlandry01" <[EMAIL PROTECTED]>
Sent: Tuesday, August 29, 2006 12:09
PM
Subject: [amibroker] Re: Need Help With
FirstVisibleBarIndex
> 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 amibroker@yahoogroups.com, "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: <amibroker@yahoogroups.com>
>> 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
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