|
PureBytes Links
Trading Reference Links
|
Let me please copy now another professional software, for the very
interesting subject of "DETRENDED PRICE"
"The Detrended Price Oscillator is an indicator that attempts to
eliminate the trend in prices."
I agree with "attempts", because the given formula indeed attempts,
but the result is good for T/2 days ago and t o t a l l y useless for
today.
Then, what is the purpose ?
It is only for historical reasons.
But we want to decide for tomorrow, we are not here to study past
history.
Except if we write novels, like someone in this list.
(The above software costs less, nearly 1000 USD.)
Best Regards
Dimitris Tsokakis
--- In amibroker@xxxx, "Tomasz Janeczko" <amibroker@xxxx> wrote:
> Hi,
>
> >Because, whithout data for tomorrow, the program gives for
> >ref(close,1) the available today´s price.
> >(In my opinion, it should indicate an {empty} value, because
> >ref(close,+1) exists for all previous days except the last one)
> >I do not know how it is designed, I know how it works.]
>
> Yes it gives today's price for the last bar as we don't know the
future yet :-)
> The reason why it doesn't return {empty} is that some of the other
> functions may be confused if they see {empty} at the end of the
array
> (normally {empty} values appear only at the beginning and all AFL
functions
> are aware of this fact)
>
> Also: I agree with Dimitris that writing trading systems using Ref
with positive
> offsets (looking into the future) would give results that could not
be
> reproduced in real life. (unless you have time-machine :-)))
>
>
> Best regards,
> Tomasz Janeczko
> amibroker.com
|