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Hi Bill,
This might be an answer.
Try replacing the + in your buy statements with an OR or
perhaps an AND. It depends on what you are looking for.
Regards,
Tony
--- In amibroker@xxxxxxxxxxxxxxx, "acesheet" <acesheet@xxxx> wrote:
> Tomasz (or anybody),
>
> Now I'm really confused. I can get AFL to recognize either of these
> trend line break signals alone, when the other is not involved, but
> when I put them together, only one of them registers.
>
> This works by itself:
>
> Buy=Cross(C,Study("D1",1));
> Sell=Cross(Study("U1",1),C);
>
> And this works by itself:
>
> Buy=Cross(C,Study("D2",1));
> Sell=Cross(Study("U2",1),C);
>
> But this doesn't work.
>
> Buy=Cross(C,Study("D1",1))+Cross(C,Study("D2",1));
> Sell=Cross(Study("U1",1),C)+Cross(Study("U2",1),C);
>
> Am I doing something wrong? It seems like you can never use one set
> of trendlines, ever.
>
> Help?
>
> -ace
>
> --- In amibroker@xxxxxxxxxxxxxxx, "acesheet" <acesheet@xxxx> wrote:
> > I messed up the loop code it should be set to i<4 for this case.
> >
> > One thing I've noticed while experimenting with this code is that
> > the "Buy" and "Sell" variables will only store the buy and sell
> > values for the last iteration of 'i' in my loop.
> >
> >
> > //-------------------------------------------
> > //---------------Start Code------------------
> > //-------------------------------------------
> > // Trendline trading study
> > //-------------------------
> > // Initialize Buy & Sell
> > Buy=0;
> > Sell=0;
> > for( i = 1; i < 4; i++ )
> > {
> > LinUp=Study("U"+i,1045);
> > LinDn=Study("D"+i,1045);
> > // Make Buy & Sell equal the sum of all the trades from
> > // the individual TL signals
> > Buy = Cross( Close, LinDn) + Buy;
> > Sell = Cross( LinUp, Close) + Sell;
> > }
> >
> > Short=0;
> > Cover=0;
> > //-------------------------------------------
> > //-----------------End Code------------------
> > //-------------------------------------------
> >
> > This code also only uses the first set of trendlines that I drew.
> > Can anyone help me get this to work on several trendlines?
> >
> > Its my intention to get it to work so that I can use trendlines
to
> > extract certain data using the Explore routine.
> >
> > -ace
> >
> >
> > --- In amibroker@xxxxxxxxxxxxxxx, "acesheet" <acesheet@xxxx>
wrote:
> > > Thanks Tomasz.
> > >
> > > My goal is to use multiple lines for explorations and
> backtesting
> > so
> > > let me run this code by you. Maybe there is something very
> simple
> > > that I'm doing wrong. I have a chart on which I've placed three
> > sets
> > > of up and down trendlines that I manually
> > > labelled "U1", "U2", "U3", "D1", "D2", and "D3". I'm trying to
> > write
> > > a simple trendline break system that uses all three lines. I'd
> > like
> > > to use as many as 9 different lines, but let's start here.
> > >
> > > Here's the AFL code that I programmed:
> > >
> > > //-------------------------------------------
> > > //---------------Start Code------------------
> > > //-------------------------------------------
> > > // Trendline trading study
> > > //-------------------------
> > > // Initialize Buy & Sell
> > > Buy=0;
> > > Sell=0;
> > > for( i = 1; i < 2; i++ )
> > > {
> > > LinUp=Study("U"+i,1045);
> > > LinDn=Study("D"+i,1045);
> > > // Make Buy & Sell equal the sum of all the trades from
> > > // the individual TL signals
> > > Buy = Cross( Close, LinDn) + Buy;
> > > Sell = Cross( LinUp, Close) + Sell;
> > > }
> > >
> > > Short=0;
> > > Cover=0;
> > > //-------------------------------------------
> > > //-----------------End Code------------------
> > > //-------------------------------------------
> > >
> > > This code also only uses the first set of trendlines that I
> drew.
> > > Can anyone help me get this to work on several trendlines?
> > >
> > > Its my intention to get it to work so that I can use trendlines
> to
> > > extract certain data using the Explore routine.
> > >
> > > -ace
> > >
> > > --- In amibroker@xxxxxxxxxxxxxxx, "Tomasz Janeczko"
> > <amibroker@xxxx>
> > > wrote:
> > > > Hello,
> > > >
> > > > If you have multiple lines with the SAME identifier on single
> > > chart pane
> > > > only FIRST will be used by Study.
> > > >
> > > > You should use different studyID's for multiple lines.
> > > >
> > > > Best regards,
> > > > Tomasz Janeczko
> > > > amibroker.com
> > > > ----- Original Message -----
> > > > From: "acesheet" <acesheet@xxxx>
> > > > To: <amibroker@xxxxxxxxxxxxxxx>
> > > > Sent: Sunday, August 10, 2003 12:52 AM
> > > > Subject: [amibroker] Trendlines
> > > >
> > > >
> > > > > Can more than one trendline of each type (per stock
> analyzed)
> > be
> > > > > used in Scans, Explorations and Backtesting?
> > > > >
> > > > > I've been messing around with the feature and I can't seem
> to
> > > get
> > > > > AFL to recognize more than one trendline of each label type
> at
> > a
> > > > > time.
> > > > >
> > > > > For instance the following code would be a very simple
> > trendline
> > > > > break buy and sell system:
> > > > >
> > > > > DTL=Study("DN");
> > > > > UTL=Study("UP");
> > > > >
> > > > > Buy = Cross( High, DTL+.1 );
> > > > > Sell = Cross( UTL-.1, Low );
> > > > > Short=0;
> > > > > Cover=0;
> > > > >
> > > > > I've drawn two trendlines on my chart that I labelled "DN"
> > using
> > > > > the "Properties" dialogue that pops up when you doubleclick
> a
> > > > > trendline you've drawn. I also set two others up
> labelled "UP"
> > > to
> > > > > give sell signals for the downtrend break signals.
> > > > >
> > > > > When I run a scan or a backtest AFL only recognizes one set
> of
> > > > > trendlines, but I've labelled them all.
> > > > >
> > > > > Can someone explain what I'm doing wrong, or am I even
doing
> > > > > anything wrong?
> > > > >
> > > > > Tnaks.
> > > > >
> > > > > -ace
> > > > >
> > > > >
> > > > >
> > > > > Send BUG REPORTS to bugs@xxxx
> > > > > Send SUGGESTIONS to suggest@xxxx
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