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[amibroker] Re: Syntax Question



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--- In amibroker@xxxxxxxxxxxxxxx, "DIMITRIS TSOKAKIS" <TSOKAKIS@xxxx> 
wrote:
> Bob,
> The 
> Buy = IIf(Cum(1)%20,0,1);
> Buy = IIf(Cum(1)%30,0,1);
> will produce Buy signals every 30 bars.
> Try the
> Buy=IIf(Cum(1)%20,0,1);
> Buy=IIf(Cum(1)%30,0,1);
> Filter=Buy;
> AddColumn(Cum(1),"");
> DT
> 
> >   -----Original Message-----
> >   From: Bob Jagow [mailto:bjagow@x...]
> >   Sent: Monday, May 05, 2003 5:55 PM
> >   To: amibroker@xxxxxxxxxxxxxxx
> >   Subject: RE: [amibroker] Re: Syntax Question
> > 
> > 
> >   Looks like only the last assignment counts, Dimitris.
> >   Try
> >   ----
> >   Buy = IIf(Cum(1)%20,0,1);
> >   Buy = IIf(Cum(1)%42,0,1);
> >   ----
> >   On the other hand, there's always the chance that
> >   ----
> >   Buy = IIf(Cum(1)%20,0,1);
> >   Do_it_now_Dammit;
> >   Buy = IIf(Cum(1)%42,0,1);
> >   ----
> >   could trigger buys every 20 days as well as every 42 days.
> > 
> >   Regards,
> >   Bob
> > 
> > 
> >   -----Original Message-----
> >   From: DIMITRIS TSOKAKIS [mailto:TSOKAKIS@x...]
> >   Sent: Monday, May 05, 2003 10:18 AM
> >   To: amibroker@xxxxxxxxxxxxxxx
> >   Subject: [amibroker] Re: Syntax Question
> > 
> > 
> > 
> >   > -----Original Message-----
> >   > From: Sam Levy [mailto:slevy1220@x...]
> >   > Sent: Monday, May 05, 2003 8:48 AM
> >   > To: amibroker@xxxxxxxxxxxxxxx
> >   > Subject: [amibroker] Syntax Question
> >   >
> >   >
> >   > Is the following correct?:
> >   >
> >   > If I want a buy signal if both of two conditions are true, I 
> would
> >   > code:
> >   >
> >   > buy=cond1 and cond2;
> >   >
> >   > If I want a buy signal if either is true, I would code:
> >   >
> >   > buy=cond1 or cond2;
> >   >
> >   > What is the difference between those and:
> >   >
> >   > buy=cond1;
> >   > buy=cond2;
> > 
> >   The main difference is that
> >   buy=cond1 or cond2;
> >   is one-line code  and
> >   buy=cond1;
> >   buy=cond2;
> >   is two-line code.
> >   AFL is executed line by line.
> >   So, in the second case you ask
> > 
> >   buy=cond1;// buy when cond1 is true
> >   buy=cond2;// buy when cond2 is true
> >   AFL will go to the next statement with the last info : 
buy=cond2;
> >   Sometimes, this property is useful :
> > 
> >   D=5;
> >   M=MA(H,D);
> >   PLOT(M,"",1,1);
> >   D=10;
> >   M=MA(H,D);
> >   PLOT(M,"",2,1);
> >   D=15;
> >   M=MA(H,D);
> >   PLOT(M,"",3,1);
> >   will plot 3 different MAs, although only one is defined, namely 
M.
> >   On the other side the
> > 
> >   D=5;
> >   M=MA(H,D);
> >   D=10;
> >   M=MA(H,D);
> >   D=15;
> >   M=MA(H,D);
> >   PLOT(M,"",1,1);
> >   PLOT(M,"",2,1);
> >   PLOT(M,"",3,1);
> >   will plot 3 MAs identical to MA(H,15)
> >   Dimitris Tsokakis
> > 
> > 
> > 
> > 
> > 
> > 
> >   > I would be grateful if someone would set me straight on this.
> >   >
> >   >
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