you need to use brackets like:
Buy = ( Cross(G0,G1)AND Cross(G0,G2) ) OR ( Cross(G0,G1) AND BarsSince(Cross(G0,G2)) <= 10 ) OR ( (Cross(G0,G1) OR Cross(G0,G2)) AND NumDownBarsG1 < 5 ); ----- Original Message ----- From: rijnaars To: [email protected] Sent: Monday, October 06, 2008 11:00 AM Subject: [amibroker] Re: Help on conditional Buy signals Thanks for explaining, but i meant that the signal was correct but i do not want it to be effective when G1 has been going down for example 5 days. I added your advice NumDownBarsG1 = BarsSince( G1 >= Ref(G1,-1)); Buy = Cross(G0,G1)AND Cross(G0,G2) OR Cross(G0,G1) AND BarsSince(Cross (G0,G2)) <= 10 OR Cross(G0,G1); // OR Cross(G0,G2) AND NumDownBarsG1 < 5); only i get failure messages at the last part: AND NumDownBarsG1 < 5); --- In [email protected], "gp_sydney" <[EMAIL PROTECTED]> wrote: > > One comment about your conditions: > > >> Buy = Cross(G0,G1)AND Cross(G0,G2) OR Cross(G0,G1) > >> AND BarsSince(Cross (G0,G2)) <= 10 OR Cross(G0,G1); > > When mixing multiple AND and OR conditions in the same expression, you > should use brackets to indicate operator precedence. For example: > > (X AND Y) OR Z > > is not the same thing as: > > X AND (Y OR Z) > > While there is a predefined order of precedence when no brackets are > used, I doubt most people would be sure of what it is, whereas > brackets make it obvious. > > Regards, > GP > > > --- In [email protected], "rijnaars" <rijnaa@> wrote: > > > > Thanks Ed > > I will show you the rules i use know. > > > > Buy = Cross(G0,G1)AND Cross(G0,G2) OR Cross(G0,G1) AND BarsSince (Cross > > (G0,G2)) <= 10 OR Cross(G0,G1); > > > > Only sometimes Buy = Cross(G0,G1) gives a wrong signal > > > > i do not wnat it to act if G1 has been going down for instance for > > last 7 days how do i implement this condition. > > > > (--- In [email protected], "Edward Pottasch" <empottasch@> > > wrote: > > > > > > hi, > > > > > > not sure exactly what you mean but maybe you could use OR instead > > of AND, so Buy = Cross(A1,A3) OR BarsSince(Cross(A1,A2)) <= 2; > > > > > > but on an array level you can construct more detailed constraints > > using: > > > > > > Buy = IIF(Cross(A1,A3) AND BarsSince(Cross(A1,A2)) <= 2,1, etc > > > > > > or just using OR in your contraint rule Buy = (constraint rule1) OR > > (constraint rule 2) OR (constraint rule 3) etc; like: > > > > > > Buy = (Cross(A1,A3) AND BarsSince(Cross(A1,A2)) <= 2) OR (Cross > > (A1,A3)) OR () etc; > > > > > > if you explain in detail how your constraint should work I can > > write it for you. > > > > > > regards, Ed > > > > > > > > > > > > > > > > > > ----- Original Message ----- > > > From: rijnaars > > > To: [email protected] > > > Sent: Monday, October 06, 2008 9:48 AM > > > Subject: [amibroker] Re: Help on conditional Buy signals > > > > > > > > > Thank you very much Ed this is what i needed > > > maybe you can help me on another aspect as well. > > > > > > if i do not want the cross signal to react if A1 crosses A3 where > > A3 > > > has been going down for the last 4 days forinstance. > > > What condition should i then implement? > > > thanks in advance > > > > > > --- In [email protected], "gp_sydney" <gp.investment@> > > > wrote: > > > > > > > > Ed, > > > > > > > > That's saying the A1/A3 cross must be before the A1/A2 cross, > > not > > > > after. It should be the other way around: > > > > > > > > Buy = Cross(A1,A3) AND BarsSince(Cross(A1,A2)) <= 2; > > > > > > > > Regards, > > > > GP > > > > > > > > > > > > --- In [email protected], "Edward Pottasch" > > <empottasch@> > > > > wrote: > > > > > > > > > > this can be done like: > > > > > > > > > > buy = Cross(A1,A2) AND barssince(Cross(A1,A3)) <= 2; > > > > > > > > > > rgds,Ed > > > > > > > > > > > > > > > > > > > > ----- Original Message ----- > > > > > From: rijnaars > > > > > To: [email protected] > > > > > Sent: Monday, October 06, 2008 8:08 AM > > > > > Subject: [amibroker] Help on conditional Buy signals > > > > > > > > > > > > > > > I want to use some conditions in a buy cross signal but i do > > > not know > > > > > how to add it. > > > > > > > > > > For instance : > > > > > > > > > > i have a buy signal buy = Cross(A1,A2)AND Cross(A1,A3) > > > > > > > > > > so in this case A1 crosses both A2 and A3 > > > > > now i like to have a signal as well when the second cross is > > > made > > > > > within 2 days after the first cross how do i make this > > > condition? > > > > > > > > > > > > > > >
