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Tomasz already answered this with the same solution, but my formatting was
off. For clarification, this is a corrected version (I hope):
//Count bars since flat or down, ergo # of consecutive up bars.
up = BarsSince(C <= Ref(C,-1));
//Count bars since flat or up, ergo # of consecutive down bars.
dn = BarsSince(C >= Ref(C,-1));
Plot(up,"up",colorGreen,styleHistogram);
Plot(dn,"dn",colorRed,styleHistogram);
--
Terry
-----Original Message-----
From: amibroker@xxxxxxxxxxxxxxx [mailto:amibroker@xxxxxxxxxxxxxxx] On Behalf
Of Terry
Sent: Thursday, January 11, 2007 09:01
To: amibroker@xxxxxxxxxxxxxxx
Subject: RE: [amibroker] Re: loop counter
No loop needed:
//Count bars since flat or down, ergo # of consecutive up bars.
up = BarsSince(C <= Ref(C,-1));
//Count bars since flat or up, ergo # of consecutive down bars.
dn = BarsSince(C >= Ref(C,-1));
Plot(up,"up",colorGreen,styleHistogram);
Plot(dn,"dn",colorRed,styleHistogram);
--
Terry
-----Original Message-----
From: amibroker@xxxxxxxxxxxxxxx [mailto:amibroker@xxxxxxxxxxxxxxx] On Behalf
Of klaus_korneker
Sent: Thursday, January 11, 2007 04:31
To: amibroker@xxxxxxxxxxxxxxx
Subject: [amibroker] Re: loop counter
Hi Nicolas,
thank you very much !!!
I thought i need a loop to do the job.
Really excellent.
--- In amibroker@xxxxxxxxxxxxxxx, "discuslorraine" <nicolas.navet@xxx>
wrote:
>
> Hello,
>
> Here is a solution :
>
> Cpt = 0;
> for ( i=1; i < BarCount; ++i ) {
> if ( C[i] > C[i-1] ) ++Cpt;
> else Cpt = 0;
> Count[i] = Cpt;
> }
>
> Plot(Count,"Count",colorRed);
>
> Best regards, Nicolas
>
>
> --- In amibroker@xxxxxxxxxxxxxxx, "klaus_korneker"
> <klaus_korneker@> wrote:
> >
> > Hello,
> >
> > i have tried that already, but it counts all bars (whole history)where
> > the condition is true. I want that it always resets to zero when the
> > condition isn't true and when it is true it should start again from
> > zero. Can you help please ?
> >
> >
> >
> >
> > --- In amibroker@xxxxxxxxxxxxxxx, "Tomasz Janeczko" <groups@> wrote:
> > >
> > > Hello,
> > >
> > > This single-liner and does not require any looping:
> > >
> > > Count = Cum( C > Ref( C, -1 ) );
> > >
> > >
> > > Best regards,
> > > Tomasz Janeczko
> > > amibroker.com
> > > ----- Original Message -----
> > > From: "klaus_korneker" <klaus_korneker@>
> > > To: <amibroker@xxxxxxxxxxxxxxx>
> > > Sent: Thursday, January 11, 2007 9:43 AM
> > > Subject: [amibroker] Re: loop counter
> > >
> > >
> > > > Hello,
> > > >
> > > > thanks a lot !
> > > >
> > > > Can you please also show me how i could count any condition like
> > > > C>ref(C,-1);
> > > >
> > > > I would like to plot a graph that shows me the number of bars
where
> > > > the following condition is true.
> > > >
> > > > Thanks !
> > > >
> > > > Klaus
> > > >
> > > >
> > > > --- In amibroker@xxxxxxxxxxxxxxx, "Tomasz Janeczko" <groups@>
wrote:
> > > >>
> > > >> Hello,
> > > >>
> > > >> See Comments section in BarIndex() reference:
> > > >>
> > > >> http://www.amibroker.com/guide/afl/afl_view.php?barindex
> > > >>
> > > >> When running a loop over array you must NOT access
> > > >> elements outside 0..BarCount-1 range.
> > > >>
> > > >> The code that you want to write should look as follows:
> > > >>
> > > >> bi = BarIndex();
> > > >>
> > > >> for( i = 0; i < BarCount; i++ )
> > > >> {
> > > >> Cnt[ i ] = i + bi[ 0 ];
> > > >> }
> > > >>
> > > >> Best regards,
> > > >> Tomasz Janeczko
> > > >> amibroker.com
> > > >> ----- Original Message -----
> > > >> From: "klaus_korneker" <klaus_korneker@>
> > > >> To: <amibroker@xxxxxxxxxxxxxxx>
> > > >> Sent: Wednesday, January 10, 2007 8:30 PM
> > > >> Subject: [amibroker] Re: loop counter
> > > >>
> > > >>
> > > >> > Thanks for the explanation. But how can i now create a
> > > >> > barindex(counter) through a loop. Graph1 plots the barindex.
> I have
> > > >> > tried to use (i = 0; i < LastValue(BarIndex()); i++ ) but this
> > > >> > generates an error.
> > > >> > Can you help ?
> > > >> >
> > > >> > Cnt = 0;
> > > >> > for( i = 0; i < LastValue(BarIndex()); i++ )
> > > >> > {
> > > >> > Cnt[ i ] = i ;
> > > >> > }
> > > >> >
> > > >> > Graph0 = Cnt;
> > > >> > Graph1 = BarIndex();
> > > >> >
> > > >> >
> > > >> > --- In amibroker@xxxxxxxxxxxxxxx, "Terry" <MagicTH@> wrote:
> > > >> >>
> > > >> >> BarCount does not necessarily == LastValue(BarIndex())
> > > >> >>
> > > >> >> This is because Amibroker uses "quickAFL" which means it
> only uses
> > > >> > enough
> > > >> >> bars to "get the job done". This frequently is not all the
bars.
> > > >> >>
> > > >> >> --
> > > >> >> Terry
> > > >> >>
> > > >> >> -----Original Message-----
> > > >> >> From: amibroker@xxxxxxxxxxxxxxx
> [mailto:amibroker@xxxxxxxxxxxxxxx]
> > > >> > On Behalf
> > > >> >> Of klaus_korneker
> > > >> >> Sent: Wednesday, January 10, 2007 09:48
> > > >> >> To: amibroker@xxxxxxxxxxxxxxx
> > > >> >> Subject: [amibroker] Re: loop counter
> > > >> >>
> > > >> >> Hi Terry,
> > > >> >>
> > > >> >> thank you very much for your explanation !
> > > >> >> However it looks a little bit strange. It works still the
same.
> > > >> >> When set the entire array to 0 with Cnt = 0; and click
Apply, it
> > > > shows
> > > >> >> the same value as with the confirmation code in the graph.
> > However
> > > >> >> automatically after about 1 second it changes the value to 199
> > > > instead
> > > >> >> 4517
> > > >> >>
> > > >> >> BTW: i know that it displays the number in the title based
on my
> > > >> > cursor.
> > > >> >>
> > > >> >> Regards
> > > >> >>
> > > >> >> Klaus
> > > >> >>
> > > >> >>
> > > >> >> --- In amibroker@xxxxxxxxxxxxxxx, "Terry" <MagicTH@> wrote:
> > > >> >> >
> > > >> >> > To initialize the loop you should do this:
> > > >> >> > Cnt = 0; //Initializes entire array, not just 1st element.
> > > >> >> >
> > > >> >> > When you click on the chart the number should change because
> > > > you are
> > > >> >> > selecting "that bar". Also see last paragraph about
barcount.
> > > >> > Otherwise,
> > > >> >> > your loop is correct.
> > > >> >> >
> > > >> >> > Here's some code to verify with:
> > > >> >> >
> > > >> >> > x = BarIndex();
> > > >> >> > Plot(x,"x",1,styleStaircase);
> > > >> >> > NumToStr(BarCount,1.0);
> > > >> >> > NumToStr(LastValue(BarIndex()),1.0);
> > > >> >> >
> > > >> >> > Note the last two statements print in the interpretation
> > window and
> > > >> >> they are
> > > >> >> > different because of quickAFL. The first changes with your
> > > > selection
> > > >> >> and the
> > > >> >> > number of bars showing. The last does not change. It is the
> > > > absolute
> > > >> >> number
> > > >> >> > of bars in your data. This is probably the reason your
> > results are
> > > >> >> changing
> > > >> >> > in unexpected ways as you are using BarCount.
> > > >> >> > --
> > > >> >> > Terry
> > > >> >> >
> > > >> >> > -----Original Message-----
> > > >> >> > From: amibroker@xxxxxxxxxxxxxxx
> > [mailto:amibroker@xxxxxxxxxxxxxxx]
> > > >> >> On Behalf
> > > >> >> > Of klaus_korneker
> > > >> >> > Sent: Wednesday, January 10, 2007 07:43
> > > >> >> > To: amibroker@xxxxxxxxxxxxxxx
> > > >> >> > Subject: [amibroker] loop counter
> > > >> >> >
> > > >> >> > Hello,
> > > >> >> >
> > > >> >> > i am trying to build a counter with a loop. i have already
> > > > tried the
> > > >> >> > following, but it seems that anything is wrong. The chart
> > shows the
> > > >> >> > bar number, but when i click inside the chart, the number
> > changes.
> > > >> >> >
> > > >> >> > Cnt[0] = 0;
> > > >> >> > for( i = 0; i < BarCount; i++ )
> > > >> >> > {
> > > >> >> > Cnt[ i ] = i ;
> > > >> >> > }
> > > >> >> >
> > > >> >> > Graph0 = Cnt;
> > > >> >> >
> > > >> >> > Thanks i advance !
> > > >> >> >
> > > >> >> >
> > > >> >> >
> > > >> >> > 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
> > > >> >> >
> > > >> >>
> > > >> >>
> > > >> >>
> > > >> >>
> > > >> >> 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
> > > >> >>
> > > >> >
> > > >> >
> > > >> >
> > > >> >
> > > >> > 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
> > > >> >
> > > >> >
> > > >> >
> > > >> >
> > > >> >
> > > >>
> > > >
> > > >
> > > >
> > > >
> > > > 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
> > > >
> > > >
> > > >
> > > >
> > > >
> > >
> >
>
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
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
http://groups.yahoo.com/group/amibroker/
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