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n>=1 Past and Current = Using 1 looks back to history for the 1st occurence it finds (including current bar) (2 finds 2nd occurence before current bar etc)
n<=0 Future = Using 0 looks to the future for 1st occurence in the future (excludes today which is found with the 1) (-1 finds 2nd occurence after current bar etc)
--
Cheers
Graham
AB-Write >< Professional AFL Writing Service
Yes, I write AFL code to your requirements
http://e-wire.net.au/~eb_kavan/ab_write.htm
On 30/05/06, Clement, Gmail <manyit99@xxxxxxxxx> wrote:
Hi Graham,
Thank you for
your advice. It works.
I am curious of the
command you are using…
valuewhen(EXPRESSION, ARRAY, n = 1)
If I use n=0,
what does it return? I understand if I use n>0, it will return future
occurences.
Clement
This should work
xx = Datenum() !=Ref(Datenum(),-1);
bar1H = ValueWhen(XX,H,1); //high of first bar of day
bar2H = ValueWhen(ref(XX,-1),H,1); //high of second bar of day
bar1L = ValueWhen(XX,L,1); //low of first bar of day
bar2L = ValueWhen(ref(XX,-1),L,1); //low of second bar of day
or if you wanted the highest and lowest of the first 2 bars of the day
bar2H = ValueWhen(ref(XX,-1),HHV(h,2)); //high of second bar of day
bar2L = ValueWhen(ref(XX,-1),LLV(L,2)); //low of second bar of day
make sure your analyser period setting matches oyur charts to get same results
--
Cheers
Graham
AB-Write >< Professional AFL Writing Service
Yes, I write AFL code to your requirements
http://e-wire.net.au/~eb_kavan/ab_write.htm
On 30/05/06, Clement,
Gmail < manyit99@xxxxxxxxx>
wrote:
Hi, Rick,
Thanks for your code. I paste the codes
into AB. I check the returned values but they are incorrect. I am new to AB and
I don't know how your codes work.
Clement
Try
bi = BarIndex()+1;
xx = ValueWhen(Day() !=Ref(Day(),-1),bi);
bar1H = ValueWhen(bi ==XX+1,H,1);
bar2L = ValueWhen(bi ==XX+1,L,1);
bar2H = ValueWhen(bi ==XX+2,H,1);
bar2L = ValueWhen(bi ==XX+2,L,1);
Rick
--- "Clement, Gmail" <manyit99@xxxxxxxxx> wrote:
> I am using 15-minute chart and the first bar started
> at 8:00am. Please tell
> me a way to get the high and low of the first 2 bars
> of current day.
>
>
>
> Thank you.
>
>
>
> Clement
>
>
>
>
Rick Osborn & Associates
885 Sorrento Ave.
Oshawa, Ontario
L1J 6V6
(905) 728-8543 fax 728-0815
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