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Bill,
One WriteVal() and some braces were missing, corrected one follows:
Period = EndValue( BarIndex() ) - BeginValue( BarIndex() )+1;
PerChange = WriteVal(100*(EndValue(Close)-BeginValue
(Close))/BeginValue(Close));
Title ="Percentage change of close is " +
PerChange +
"%, \nStandard Deviation over the period is " +
WriteVal( EndValue( StDev( Close, Period ) ) );
BTW: I don't think you need to add +1 to the Period.
Best regards,
Tomasz Janeczko
amibroker.com
----- Original Message -----
From: <wbarack@xxxxxxxxx>
To: <amibroker@xxxxxxxxxxxxxxx>
Sent: Sunday, February 16, 2003 6:53 PM
Subject: [amibroker] Re: Number of Days between dates
> Tomasz,
>
> Well, it didn't take long until I ran into my next roadblock. Here is
> the code:
> -----------
> Period = EndValue( BarIndex() ) - BeginValue( BarIndex() )+1;
>
> PerChange = WriteVal(100*(EndValue(Close)-BeginValue
> (Close))/BeginValue(Close));
>
> Title ="Percentagechange of close is " + PerChange + "%, \nStandard
> Deviation over the period is "+ EndValue( StDev( Close, Period ) ) ;
>
> ----------------
> When I apply it, I get an error indication at the last semicolon in
> the Title statement.
>
> Now, another question and this is based on an interpretation of the
> Period calculation in line 1. Is the appropriate value to use the
> difference between the bar indexes or the difference plus 1 to use
> all the bars in the range. It seems to me that the appropriate on
> depends on how the barindex function is constructed.
>
> Thanks
>
> Bill
> --- In amibroker@xxxxxxxxxxxxxxx, "Tomasz Janeczko" <amibroker@xxxx>
> wrote:
> > Hello,
> >
> > I have added the sample codes to:
> >
> > http://www.amibroker.com/guide/afl/afl_view.php?name=BEGINVALUE
> >
> > and
> >
> > http://www.amibroker.com/guide/afl/afl_view.php?name=ENDVALUE
> >
> >
> > Best regards,
> > Tomasz Janeczko
> > amibroker.com
> > ----- Original Message -----
> > From: <wbarack@xxxx>
> > To: <amibroker@xxxxxxxxxxxxxxx>
> > Sent: Sunday, February 16, 2003 5:28 PM
> > Subject: [amibroker] Number of Days between dates
> >
> >
> > > I am trying out 4.29.1 and its wonderful new functions that let
> me
> > > select a from-to range on a price plot. Thanks Tomasz. Great
> addition.
> > >
> > > What I want to do is calculate a standard deviation over the
> selected
> > > range. While the example for "percentage change" in price that is
> > > included withe download works great, the standard deviation
> function,
> > > like many others, wants to know the period to be calcated over.
> > >
> > > StDev(array, period);
> > >
> > > So I am trying to find the period as follows:
> > >
> > > Range (or period) = EndValue(Datetime())-BeginValues(DateTime());
> > >
> > > however, this expression and the variants of it that I have tried
> > > results in error messages when I try to write the value of StDev
> in a
> > > Title expression.
> > >
> > > I'm sure I messing up formats or something similar and I cannot
> find
> > > the Help descriptions that will get me out of my dilema.
> > >
> > > Long winded, but the basic question is: "How do I find the range
> > > in "bars" for a given From-to range such that I can use it in
> > > functions like StDev?"
> > >
> > > Second associated question: "How do I direct the Title function
> to
> > > execute a carriage return?"
> > >
> > > Thanks
> > >
> > > Bill
> > >
> > >
> > > Post AmiQuote-related messages ONLY to: amiquote@xxxxxxxxxxxxxxx
> > > (Web page: http://groups.yahoo.com/group/amiquote/messages/)
> > >
> > > Check group FAQ at:
> http://groups.yahoo.com/group/amibroker/files/groupfaq.html
> > >
> > > Your use of Yahoo! Groups is subject to
> http://docs.yahoo.com/info/terms/
> > >
> > >
> > >
>
>
> Post AmiQuote-related messages ONLY to: amiquote@xxxxxxxxxxxxxxx
> (Web page: http://groups.yahoo.com/group/amiquote/messages/)
>
> Check group FAQ at: http://groups.yahoo.com/group/amibroker/files/groupfaq.html
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>
>
Post AmiQuote-related messages ONLY to: amiquote@xxxxxxxxxxxxxxx
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Check group FAQ at: http://groups.yahoo.com/group/amibroker/files/groupfaq.html
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