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Dominic,
Your pat is a condition, its value is either 1 [true] or 0 [false].
Your ref(pat,-1) is the previous value of pat and it will be also 1
or 0.
The condition
C>ref(pat,-1)
is equivalent to
C>1 [respectively C>0]
If, for example, you search MSFT, the condition will be true for
every bar [remember, true means value equal to 1] and, consequently,
cum(C>ref(pat,-1)) will be equal to cum(1)
Dimitris Tsokakis
--- In amibroker@xxxxxxxxxxxxxxx, "dom1_1998" <Dom2000@xxxx> wrote:
> I'm praticing to understand formulas. I have written this test
pattern;
>
> pat=Ref(C,-3) < Ref(C,-4) AND Ref(C,-2) <Ref(C,-3)AND
> Ref(C,-2)<Ref(C,-1)AND C>Ref(C,-1);
>
> totpat=Cum(pat);
> day1up=Cum(Ref(pat,-1)AND C>Ref(C,-1));
>
> I totaled the patterns with cum(pat). But when I tried to total the
> day1up patterns with day1up=cum(c>ref(pat,-1); It wouldn't work.
> I had to use the formula above (day1up=Cum(Ref(pat,-1)AND C>Ref(C,-
1));
>
> Why doesn't the cum(c>ref(pat,-1) work?? Doesn't it say total only
> the number of closes that are greater than the pattern yesterday?
>
> TIA,
>
> Dominick
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