[amibroker] Re: Price Steps

["Glenn" <glennokb@xxxxxxxxxxxx>]

Hi,

Thanks Graham and Tomasz,

I think Grahams way may do it as I probably didn't explain enough.

There are actually 3 different "Ticksize" on the ASX ie:

0.1 cents To 9.9 cents    0.1 cents
10 cents To 49.5 cents    0.5 cents
50 cents To 999.99 cents    1 cent

I tried this code below but I think using the ticksize this way might
be wrong because of result Stop value.

Stop = IIf(TrailingStop < 0.10, TickSize = 0.01,
IIf(TrailingStop > 0.10 AND Stop < 0.50, TickSize = 0.05,
IIf(TrailingStop > 0.50 , TickSize = 0.1,0)));

Thanks, Glenn



--- In amibroker@xxxxxxxxxxxxxxx, "Tomasz Janeczko" <amibroker@xxxx>
wrote:
> Hello,
> 
> No need to perform rounding. Just use
> 
> TickSize = 0.5;
> 
> http://www.amibroker.com/guide/h_backtest.html
> 
> Quote from manual:
> "
> Tick size
> 
> This setting controls the minimum price move of given symbol. You
can define it on global and per-symbol level. As with round lot
> size, you can define per-symbol tick size in the Symbol->Information
page (pic. 3). The value of zero instructs AmiBroker to use
> "default tick size" defined in the Settings page (pic. 1) of
Automatic Analysis window. If default tick size is also set to zero it
> means that there is no minimum price move.
> 
> You can set and retrieve the tick size also from AFL formula using
TickSize reserved variable, for example:
> 
>   TickSize = 0.01;
> 
> Note that the tick size setting affects ONLY trades exited by
built-in stops and/or ApplyStop(). The backtester assumes that price
> data follow tick size requirements and it does not change price
arrays supplied by the user.
> 
> So specifying tick size makes sense only if you are using built-in
stops so exit points are generated at "allowed" price levels
> instead of calculated ones. For example in Japan - you can not have
fractional parts of yen so you should define global ticksize to
> 1, so built-in stops exit trades at integer levels.
> 
> "
> Best regards,
> Tomasz Janeczko
> amibroker.com
> 
> ----- Original Message ----- 
> From: "Glenn" <glennokb@xxxx>
> To: <amibroker@xxxxxxxxxxxxxxx>
> Sent: Sunday, July 11, 2004 11:02 PM
> Subject: [amibroker] Price Steps
> 
> 
> > Hi,
> >
> > I would like to change my trailing stop so that it matches market
> > convention regarding price steps.
> >
> > For example:
> > >From 10 cents To 49.5 cents price steps are 0.5 cents.
> >
> > If my trailing stop value is say 34.1567, I would like this to simply
> > show 34.5.
> >
> > I had a look at the functions ceil(), round() and floor() but they go
> > to the higther/lower/closest integer. Any ideas please?
> >
> > Cheers Glenn
> >
> >
> >
> >
> > Check AmiBroker web page at:
> > http://www.amibroker.com/
> >
> > Check group FAQ at:
http://groups.yahoo.com/group/amibroker/files/groupfaq.html
> > Yahoo! Groups Links
> >
> >
> >
> >
> >
> >



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