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Hello,
No the code is incorrect.
If you use Volatile = False (and you do in your code)
the value of stop is locked at entry bar it
it does not change during the trade.
You would need to use Volatile = True.
Second error is modifying BuyPrice and SellPrice arrays.
These are reserved variable names. Should be used
as INPUT for backtester to change the prices of ordinary
entries/exits (not exits by stop).
As I wrote already the stop you want to achieve could
be programmed with the loop that I already posted code for.
Best regards,
Tomasz Janeczko
amibroker.com
----- Original Message -----
From: "jwilsonp2a" <j1wilson@xxxxxxxxxxx>
To: <amibroker@xxxxxxxxxxxxxxx>
Sent: Saturday, October 25, 2003 3:08 AM
Subject: [amibroker] Re: trailing stop question from new user
>
> Tomasz,
>
> Can you please comment on this, from my earlier post?
>
> I seem to have a workaround, after finding that I could
> vary the trailing stop percentage with a variable:
> (comments please !!)
> =====================================================================
> =====================================================================
> SellSTOP=(ValueWhen(Buy,Ref(High,-1),N=1));
> /* LOCK IN A FIXED STOP PRICE ON DAY OF ENTRY */
>
> BuyPrice=Max(BuySTOP,Low);
> SellPrice=Min(SellSTOP,High);
>
> profit_percent=((100 * (High - BuyPrice)/BuyPrice) >= 10);
>
> trail_stop_percent=IIf(profit_percent,3,100);
>
> ApplyStop(2,1,trail_stop_percent,True,False);
> /* IF PROFIT IS AT LEAST 10%, USE 3% TRAILING STOP, ELSE 100% */
>
> Sell=Close < SellSTOP;
> /* OTHERWISE USE ABSOLUTE STOP LOSS OF Inside Day High ON SETUP */
>
> =====================================================================
> =====================================================================
>
>
> =====================================================================
> =====================================================================
>
> --- In amibroker@xxxxxxxxxxxxxxx, "Tomasz Janeczko" <amibroker@xxxx>
> wrote:
> > Hello,
> >
> > ApplyStops can be either enabled or disabled.
> > You can not change this bar-by-bar.
> >
> > Instead write a code that uses a loop as shown in the User's Guide
> for profit target.
> >
> > /* a sample low-level implementation of Profit-target stop in AFL:
> */
> > Buy = Cross( MACD(), Signal() );
> >
> > priceatbuy=0;
> >
> > for( i = 0; i < BarCount; i++ )
> > {
> > if( priceatbuy == 0 && Buy[ i ] )
> > priceatbuy = BuyPrice[ i ];
> >
> > if( priceatbuy > 0 && SellPrice[ i ] > 1.1 * priceatbuy )
> > {
> > Sell[ i ] = 1;
> > SellPrice[ i ] = 1.1 * priceatbuy;
> > priceatbuy = 0;
> > }
> > else
> > Sell[ i ] = 0;
> > }
> >
> > Best regards,
> > Tomasz Janeczko
> > amibroker.com
> > ----- Original Message -----
> > From: "jwilsonp2a" <j1wilson@xxxx>
> > To: <amibroker@xxxxxxxxxxxxxxx>
> > Sent: Thursday, October 23, 2003 9:04 AM
> > Subject: [amibroker] trailing stop question from new user
> >
> >
> > >
> > > Hi,
> > >
> > > I am trying to implement a two tiered stop loss, one part being
> a
> > > trailing stop, the other a fixed stop. I want a 3% trailing stop
> if
> > > I am at least 10% profitable, else I want a fixed stop loss
> price.
> > >
> > > I thought I had it, but can't quite figure out how to utilize a
> > > variable in the ApplyStop(2,x,3,true,false) command. It is
> the "x" I
> > > just showed that needs to be a 1 to enable, or a 0 to disable.
> > >
> > > Here is a portion of my code:
> > >
> > > ==================================================
> > > .
> > > .
> > > .
> > > BuyPrice = Max(BuySTOP,Low);
> > > SellPrice = Min(SellSTOP,High);
> > >
> > > profit_ten_percent = (((High - BuyPrice)/BuyPrice) >= 0.10);
> > > enable_stop = IIf(profit_ten_percent,1,0);
> > >
> > > ApplyStop(2,enable_stop,3,True,False);
> > > Sell = Cross(SellPrice,Low);
> > > ==================================================
> > >
> > > It's the "enable_stop" variable that fouls this up. Is this
> strategy
> > > even possible? I would greatly appreciate any help on this.
> > >
> > > Thank you, Jim
> > >
> > >
> > >
> > >
> > > Send BUG REPORTS to bugs@xxxx
> > > Send SUGGESTIONS to suggest@xxxx
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> > >
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> > >
> > >
> > >
>
>
>
> Send BUG REPORTS to bugs@xxxxxxxxxxxxx
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