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Hey all-
I'm trying to put together a simple ROC/ EMA crossover indicator, but the signal is coming one period late. I can adjust it with the ref() function, but don't understand why that would be needed. This is what I have:
[code:1:13ec7b50f7]{Simple ROC Crossover}
a:=Input("Rate of Change Period: ",1,100,30);
b:=Input("Moving Average Period: ",1,100,12);
PROCH:=ROC(C,a,%);
PROCA:=Mov(PROCH,b,E);
PROCH; PROCA;
le:=Cross(PROCH, PROCA);
le;[/code:1:13ec7b50f7]
Any help is appreciated.
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Rank: Advanced Member
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Joined: 9/8/2004(UTC)
Posts: 2,266
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What about something like that:
{Simple ROC Crossover}
a:=Input("Rate of Change Period: ",1,100,30);
b:=Input("Moving Average Period: ",1,100,12);
PROCH:=ROC(C,a,%);
PROCA:=Mov(PROCH,b,E);
PROCH; PROCA;
le:=Cross(PROCH, (PROCA*.95));
le;
Patrick :mrgreen:
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Rank: Advanced Member
Groups: Registered, Registered Users
Joined: 3/19/2005(UTC)
Posts: 2,995
Was thanked: 14 time(s) in 10 post(s)
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Well... that didn't work. However, I know what's happening now. Whenever the crossover occurs, it doesn't signal until the start of the next full period. e.g., on a 1-minute chart, if the crossover occurs at 08:36:15, the signal appears at 08:37:00. On a daily chart, if the crossver occurs somewhere in the middle of Monday, it will signal on Tuesday's opening. That doesn't sound right...
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Rank: Advanced Member
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G
It looks fine to me - exactly what I'd expect. A Cross() requires two bars to function (excuse the pun) - a "before" bar and an "after" bar. The actual cross will dispaly somewhere between those two bars. There cannot be a cross until the "after" bar is at least partially formed. How much of that bar is needed before the cross is signalled will depend on the intrabar price or indicator movement that the Cross() is being used with. An EOD Cross() related to the CLOSE could appear and disappear several times during the day (corresponding to price oscillations) if intraday data was being used to feed the current EOD bar.
Roy
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Rank: Advanced Member
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Joined: 3/19/2005(UTC)
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Quote:An EOD Cross() related to the CLOSE could appear and disappear several times during the day.
Thanks Roy. :D It makes sense once explained. I got confused after re-reading the cross() description in the manual.
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