[amibroker] Re: How do I reference the last condition

["Mike" <sfclimbers@xxxxxxxxx>]

James,

You can probably keep the original formula. Just use the Ref function 
to refer to a previous value. For example, I believe that your 
modified formula is equivalent to Ref(PHigh, -2) of the original 
formula.

Mike

--- In amibroker@xxxxxxxxxxxxxxx, James <jamesmemphis@xxx> wrote:
>
> Thanks Mike,
> I think that will work perfectly. I guess the best way to solve the 
forward looking problem would be to change it to 
> Phigh = ( Ref (H, -2) > Ref (H, -3) AND Ref (H, -2) > Ref (H, -1) );
> which would insure the high was established, or is there a better 
way?
> Thanks for your help,
> James
> 
> 
> 
> ----- Original Message ----
> From: Mike <sfclimbers@xxx>
> To: amibroker@xxxxxxxxxxxxxxx
> Sent: Tuesday, April 22, 2008 9:16:01 PM
> Subject: [amibroker] Re: How do I reference the last condition
> 
> 
> What about something like:
> 
> Phigh = ( H > Ref (H, 1) AND H > Ref (H, -1) );
> PhighPrice = ValueWhen(Phigh, H, 1);
> Buy = Cross(H, PhighPrice) OR ...
> 
> Note that your Phigh calculation is looking into the future. So, 
> you'll need to adjust for that before taking the buy. Also, I don't 
> have AmiBroker in front of me right now, so you'll have to 
> validate whether the above is correct or not.
> 
> Mike
> --- In amibroker@xxxxxxxxx ps.com, James <jamesmemphis@ ...> wrote:
> >
> > How do I reference only the last condition? In this case, say I 
> want to buy when price crosses above the last pivot high or below 
the 
> last pivot low. I define pivot high as:
> > Phigh = ( H > Ref (H, 1) AND H > Ref (H, -1) );
> > I want to buy if price crosses the last occurence of this and not 
> an occurence 20 bars ago that could be at a lower price. So Phigh 
is 
> only the last Phigh. Hope this makes sense.
> > Thanks in advance,
> > James
> > 
> > 
> > 
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> 
>  
> 
> 
>       
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