[amibroker] Re: Triggering a Chandelier trailing stop with % favorable price excursion

["cohndw" <minimax9999@xxxxxxxxxxx>]

Terry,

Thanks for getting back to me quickly. 

You say the code should work, but when I attempt to print out the 
OpenPrice value I get the standard -1E10 monster value which 
indicates that OpenPrice was never defined, or is being treated as an 
array rather than a number.  The next line of code that works with 
OpenPrice is

PcntExcursion = ( ( Open - OpenPrice ) / Open ) * 100.0;

Note that Open is the standard Open price array.   My thinking is
this will create a new array, PcntExcursion, which provides 
percentage price excursion from the BuyPrice.  Again, when I attempt 
to print out this array I get the -1E10 monster value, indicating 
this array is not assigned.

The other idea I had for grabbing the buy price (the Open at the 
EntryBar) was code that looked like this:

TempPrice = Ref(BuyPrice,-(BarIndex()-EntryBar));
OpenPrice = BeginValue(TempPrice);

Where EntryBar is the bar the buy is made on.

Or alternatively something like:

PcntExcursion = ( ( Open - Ref(BuyPrice,-(BarIndex()-EntryBar)) ) / 
Open ) / 100.0;

Thanks,

Dave


--- In amibroker@xxxxxxxxxxxxxxx, "Terry" <MagicTH@xxx> wrote:
>
> Your code should work in retrieving the Open price on the day you 
buy.
> You probably should get the BuyPrice in case trade delays are set. 
> 
> However, you will need to use loops to affect the results because 
when
> using array processing you cannot affect the array with code below 
the
> original line. 
> 
> That's probably a confusing statement. I would need more of your 
code to
> make any recommendations.
> --
> Terry
> 
> -----Original Message-----
> From: amibroker@xxxxxxxxxxxxxxx [mailto:amibroker@xxxxxxxxxxxxxxx] 
On
> Behalf Of cohndw
> Sent: Sunday, July 23, 2006 21:50
> To: amibroker@xxxxxxxxxxxxxxx
> Subject: [amibroker] Triggering a Chandelier trailing stop with %
> favorable price excursion
> 
> I am trying to calculate the % favorable price excursion based on 
the
> current price vs the buy price, and then turn on a Chandelier 
trailing
> stop if a % favorable price excursion threshhold is hit to lock in
> more profits.  I am unable to grab the buyprice on the first buy
> (opening price).  The code I am using is shown below.
> 
> OpenPrice = BeginValue(ValueWhen(Buy>0,Open,1));
> 
> Thanks,
> 
> Dave
> 
> 
> 
> 
> 
> 
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