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Hello,
WriteVal gives "selected" date. In "AA" selected is a last bar of analysis period.
More discussion on this is included in the guide:
http://www.amibroker.com/guide/afl/afl_view.php?name=SELECTEDVALUE
As I wrote before I suggest using
AddColumn( DateTime(),"End Date", formatDateTime );
This uses Windows Regional settings format (see Windows Control Panel).
You can change the settings to produce output in any format.
Best regards,
Tomasz Janeczko
amibroker.com
----- Original Message -----
From: "Andrew" <ae_perrin@xxxxxxxxxxxxxxx>
To: <amibroker@xxxxxxxxxxxxxxx>
Sent: Thursday, September 11, 2003 11:56 PM
Subject: [amibroker] Re: Converting DateNum() to a string...
> TJ
> Can you explain why this only gives the "End Date" of the range set
> in the AA window. Does the WriteVal function only take the last
> value of an array?
>
> AddTextColumn(WriteVal( DateNum(), 1.0, False ),"End Date");
>
> Andrew
>
> --- In amibroker@xxxxxxxxxxxxxxx, "Tomasz Janeczko" <amibroker@xxxx>
> wrote:
> > Hello,
> >
> > Sorry there was one typo, should be AddColumn instead of
> Addtextcolumn,
> > as below:
> >
> > function RangeBarLast()
> > {
> > Result = LastValue( ValueWhen( Status("lastbarinrange"),
> > BarIndex() ) );
> > return Result;
> > }
> >
> > EndBar = RangeBarLast();
> > dt = DateTime();
> >
> > Filter = 1;
> > AddColumn(dt[ EndBar ] , "End Date", formatDateTime);
> >
> > Hope this helps.
> >
> > Best regards,
> > Tomasz Janeczko
> > amibroker.com
> > ----- Original Message -----
> > From: "jtelang" <jtelang@xxxx>
> > To: <amibroker@xxxxxxxxxxxxxxx>
> > Sent: Thursday, September 11, 2003 7:05 PM
> > Subject: [amibroker] Re: Converting DateNum() to a string...
> >
> >
> > > TJ,
> > >
> > > Doc says that AddTextColumn takes a String as first parameter...
> Is
> > > that not an array of strings? I see that AddColumn does state
> that it
> > > takes array as a parameter. I'm a bit confused because when I
> run
> > > following -
> > >
> > > Filter = True;
> > > dn1 = DateNum();
> > > dn2 = WriteVal(dn1, 1.0, False);
> > > AddColumn(dn1, "dn1");
> > > AddTextColumn(dn2, "dn2");
> > >
> > > - I get correct increasing number in the dn1 column, but only
> the
> > > last value of dn1 in the entire dn2 column. Wondering if its
> because
> > > of the way WriteVal or AddTextColumn supposed to behave or
> something
> > > else that I'm not understanding. I noticed that WriteVal doc
> says
> > > that it can take in both, a number or an array. I'm expecting
> that in
> > > this case, it's an array.
> > >
> > > What am I missing here?
> > >
> > > TIA,
> > >
> > > Jitu
> > >
> > > --- In amibroker@xxxxxxxxxxxxxxx, "Tomasz Janeczko"
> <amibroker@xxxx>
> > > wrote:
> > > > Andrew,
> > > >
> > > > You could also use simpler approach:
> > > >
> > > > function RangeBarLast()
> > > > {
> > > > Result = LastValue( ValueWhen( Status("lastbarinrange"),
> > > > BarIndex() ) );
> > > > return Result;
> > > > }
> > > >
> > > > EndBar = RangeBarLast();
> > > > dt = DateTime();
> > > >
> > > > Filter = 1;
> > > > AddTextColumn(dt[ EndBar ] , "End Date", formatDateTime);
> > > >
> > > > Hope this helps.
> > > >
> > > > Best regards,
> > > > Tomasz Janeczko
> > > > amibroker.com
> > > > ----- Original Message -----
> > > > From: "Andrew" <ae_perrin@xxxx>
> > > > To: <amibroker@xxxxxxxxxxxxxxx>
> > > > Sent: Thursday, September 11, 2003 4:39 AM
> > > > Subject: [amibroker] Re: Converting DateNum() to a string...
> > > >
> > > >
> > > > > Jitu
> > > > > Re: "Third thing: all floating point arithmetic is IEEE
> single
> > > > > precision 32 bit floating point that has 7 (seven)
> significant
> > > > > digits." This is the reason I had to write that YYYYMMDD
> > > function.
> > > > > This function pads date out to 8 digits. This is
> essentially how
> > > I
> > > > > use these functions, I want to export a file with a 8 digit
> date
> > > tag
> > > > > attached. The Date will be the end date of the range you
> select
> > > in
> > > > > the AA window.
> > > > >
> > > > > Andrew
> > > > >
> > > > > function YYYYMMDD( indexofBar )
> > > > > {
> > > > > tYear = Year();
> > > > > tDate = DateNum();
> > > > > Daystr = StrRight(WriteVal(tdate[indexofBar],1.0),2);
> > > > > Monthstr = StrLeft(StrRight(WriteVal(tdate[indexofBar]
> > > > > *10,1.0),6),2);
> > > > > Yearstr = StrLeft(WriteVal(tYear[indexofBar],1.0),1)+StrRight
> > > > > (WriteVal(tYear[indexofBar],1.0),3);
> > > > > result = YearStr + Monthstr + DayStr;
> > > > > return result;
> > > > > }
> > > > >
> > > > > function RangeBarLast()
> > > > > {
> > > > > Result = LastValue( ValueWhen( Status("lastbarinrange"),
> > > > > BarIndex() ) );
> > > > > return Result;
> > > > > }
> > > > >
> > > > > EndBar = RangeBarLast();
> > > > > finishbar = YYYYMMDD(EndBar);
> > > > > /*
> > > > > ReportExport = "C:/Documents and Settings/Owner/My
> > > > > Documents/Investment docs/ROR System daily
> > > > > Scans/ROR_Report_"+YYYYMMDD(finishbar)+".TXT";
> > > > > xxTableExport(ReportExport," ",Report);
> > > > > */
> > > > > Filter = 1;
> > > > > AddTextColumn(finishbar, "End Date");
> > > > >
> > > > >
> > > > >
> > > > > --- In amibroker@xxxxxxxxxxxxxxx, "jtelang" <jtelang@xxxx>
> wrote:
> > > > > > Ha! Yes I did read your post carefully, but you're right,
> what
> > > I
> > > > > > didn't read carefully is that doc you pointed to. The
> reason is
> > > > > that
> > > > > > I had already carefully read DateNum documentation that I
> have
> > > > > > installed (with the latest beta), and it does not have
> that
> > > last
> > > > > > crucial "Separator" parameter that I was desparately
> looking
> > > > > for. :-)
> > > > > >
> > > > > > > Third thing: all floating point arithmetic is IEEE
> single
> > > > > precision
> > > > > > 32 bit
> > > > > > > floating point that has 7 (seven) significant digits.
> > > > > >
> > > > > > Gotcha!
> > > > > >
> > > > > > Jitu
> > > > > >
> > > > > > --- In amibroker@xxxxxxxxxxxxxxx, "Tomasz Janeczko"
> > > > > <amibroker@xxxx>
> > > > > > wrote:
> > > > > > > Read carefully.
> > > > > > >
> > > > > > > I wrote:
> > > > > > > Use ******formatDateTime******* in conjunction with
> WriteVal
> > > > > > > http://www.amibroker.com/guide/afl/afl_view.php?
> name=WRITEVAL
> > > > > > >
> > > > > > > Quote
> > > > > > >
> > > > > > > "Display date/time according to regional settings
> > > > > > >
> > > > > > > WriteVal( DateTime(), formatDateTime );
> > > > > > >
> > > > > > > "
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > > Also If you don't want to display thousand separator
> simply
> > > > > > >
> > > > > > > specify Separator = False as below
> > > > > > >
> > > > > > >
> > > > > > > WriteVal( DateNum(), 1.0, False );
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > > Third thing: all floating point arithmetic is IEEE
> single
> > > > > precision
> > > > > > 32 bit
> > > > > > >
> > > > > > > floating point that has 7 (seven) significant digits.
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > > Best regards,
> > > > > > > Tomasz Janeczko
> > > > > > > amibroker.com
> > > > > > >
> > > > > > > ----- Original Message -----
> > > > > > > From: "jtelang" <jtelang@xxxx>
> > > > > > > To: <amibroker@xxxxxxxxxxxxxxx>
> > > > > > > Sent: Thursday, September 11, 2003 2:18 AM
> > > > > > > Subject: [amibroker] Re: Converting DateNum() to a
> string...
> > > > > > >
> > > > > > >
> > > > > > > > Tomasz,
> > > > > > > >
> > > > > > > > I did try WriteVal. The problem I ran into was that
> integer
> > > > > value
> > > > > > > > such as 20021010 came back with commas, like
> 200,210,10
> > > which
> > > > > I
> > > > > > could
> > > > > > > > not get rid of. And I'm quite puzzled that passing the
> > > number
> > > > > > > > returned by DateNum didn't work for me in the way I
> tried
> > > it
> > > > > (as
> > > > > > > > mentioned in my original post). Do you have any idea
> if its
> > > a
> > > > > bug
> > > > > > or
> > > > > > > > if its something that I did wrong?
> > > > > > > >
> > > > > > > > Andrew, thanks for your suggestion. I'll try it. I
> have it
> > > now
> > > > > > > > working as follows (which gives me a 8 digit number,
> with
> > > > > leading
> > > > > > 0's
> > > > > > > > when warranted). Couldn't think of any other way to
> get it
> > > to
> > > > > > work.
> > > > > > > > By leading 0's, I mean that I want the string to be
> > > 20020310
> > > > > when
> > > > > > the
> > > > > > > > date is 10/3/2002, instead of 2002310.
> > > > > > > >
> > > > > > > > ------------------
> > > > > > > >
> > > > > > > > EnableScript("vbscript");
> > > > > > > >
> > > > > > > > gYstr = "" + Year();
> > > > > > > > gMstr = "" + Month();
> > > > > > > > gDstr = "" + Day();
> > > > > > > > <%
> > > > > > > > Dim mstr
> > > > > > > > Dim dstr
> > > > > > > > mstr = AFL("gMstr")
> > > > > > > > if( Len(mstr) < 2 ) then mstr = "0" + mstr
> > > > > > > > dstr = AFL("gDstr")
> > > > > > > > if( Len(dstr) < 2 ) then dstr = "0" + dstr
> > > > > > > > AFL("gMstr") = mstr
> > > > > > > > AFL("gDstr") = dstr
> > > > > > > > %>
> > > > > > > > gDateNumStr = gYstr + gMstr + gDstr;
> > > > > > > >
> > > > > > > > -----------------
> > > > > > > >
> > > > > > > > Jitu
> > > > > > > >
> > > > > > > > --- In amibroker@xxxxxxxxxxxxxxx, "Tomasz Janeczko"
> > > > > > <amibroker@xxxx>
> > > > > > > > wrote:
> > > > > > > > > Hello,
> > > > > > > > >
> > > > > > > > > Use formatDateTime in conjunction with WriteVal
> > > > > > > > > http://www.amibroker.com/guide/afl/afl_view.php?
> > > name=WRITEVAL
> > > > > > > > >
> > > > > > > > >
> > > > > > > > > Best regards,
> > > > > > > > > Tomasz Janeczko
> > > > > > > > > amibroker.com
> > > > > > > > > ----- Original Message -----
> > > > > > > > > From: "jtelang" <jtelang@xxxx>
> > > > > > > > > To: <amibroker@xxxxxxxxxxxxxxx>
> > > > > > > > > Sent: Wednesday, September 10, 2003 11:54 PM
> > > > > > > > > Subject: [amibroker] Converting DateNum() to a
> string...
> > > > > > > > >
> > > > > > > > >
> > > > > > > > > > I'm trying to use the number returned by DateNum()
> in a
> > > > > > string
> > > > > > > > > > that'll designate a unique filename for each day,
> and
> > > for
> > > > > > some
> > > > > > > > reason
> > > > > > > > > > am unable to use the value returned. Here's a
> > > simplified
> > > > > > example,
> > > > > > > > > > when trying to set it as a string to title. Does
> anyone
> > > > > know
> > > > > > why
> > > > > > > > this
> > > > > > > > > > wouldn't work? I get a syntax error on this -
> > > > > > > > > >
> > > > > > > > > > EnableScript("vbscript");
> > > > > > > > > > dn = DateNum();
> > > > > > > > > > <%
> > > > > > > > > > AFL("Title") = CStr(AFL("dn"))
> > > > > > > > > > %>
> > > > > > > > > >
> > > > > > > > > > Following does work -
> > > > > > > > > >
> > > > > > > > > > EnableScript("vbscript");
> > > > > > > > > > dn = 9999999;
> > > > > > > > > > <%
> > > > > > > > > > AFL("Title") = CStr(AFL("dn"))
> > > > > > > > > > %>
> > > > > > > > > >
> > > > > > > > > > What's the difference in assigning a constant vs a
> > > value
> > > > > > returned
> > > > > > > > by
> > > > > > > > > > DateNum to variable dn? FWIW, I tried ABTool's
> > > xxToString
> > > > > ()
> > > > > > > > function
> > > > > > > > > > as well. Similar problem...
> > > > > > > > > >
> > > > > > > > > > TIA,
> > > > > > > > > >
> > > > > > > > > > Jitu
> > > > > > > > > >
> > > > > > > > > >
> > > > > > > > > >
> > > > > > > > > >
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