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Think logically about what the expression is saying. Ref(TimeNum() ==
73000, -1) is saying when the previous bar was 7:30:00, so the whole
expression is saying give me the value of TimeNum() when the previous
bar was 7:30:00. With 5 minute data that will be 7:35:00 (because then
the bar before that would have been 7:30:00).
Similarly for the other two expressions.
Regards,
GP
--- In amibroker@xxxxxxxxxxxxxxx, "troll" <deanhodgins@xxx> wrote:
>
> I'm puzzled over the values the following example formulas return:
>
> x = ValueWhen( Ref(TimeNum()==73000,-1), TimeNum() ); Returns 73500
> x = ValueWhen( Ref(TimeNum()==73000,0), TimeNum() ); Returns 73000
> x = ValueWhen( Ref(TimeNum()==73000,1), TimeNum() ); Returns 72500
>
> I thought that the Ref function used -1 to shift reference to a past
> value while a positive number refers to a future array value but the
> opposite occurs in the above formulas. Not sure why the results are
> opposite from expected unless I've missed something here.
>
> Any clarification much appreciated.
>
>
> Thanks & Regards,
>
> Dean H
>
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