|
PureBytes Links
Trading Reference Links
|
>From Wikipedia.
'Tis the dream of each programmer
Before his life is done,
To write three lines of APL
And make the damn thing run.
JOE
Sent: Tuesday, December 05, 2006 6:22 AM
Subject: Re: [amibroker] Re: Having a nasty time figuring this APL out.
> If you've been coding for 30 years you must have bushed up against APL?
> (A Programming Language) Things were going so well for IBM in hardware
> and software that we were trying to convert customers to using this
> language.
> In APL every variable was treated as a set(array). These sets had
different
> shapes/characteristics. Amibroker has that similar aspect to APL, except
> you don't to use a special type ball with Greek symbols. For example to
get
> the
> shape of the set (rho Close)....provides the number of elements in that
set,
> while
> +/Close would sum the elements. Calculating an average was +/Close
divided
> by rho Close
>
> JOE
> ----- Original Message -----
> From: "Homar Simpson" <x77777x@xxxxxxxxx>
> To: <amibroker@xxxxxxxxxxxxxxx>
> Sent: Tuesday, December 05, 2006 12:10 AM
> Subject: [amibroker] Re: Having a nasty time figuring this APL out.
>
>
> > As I mentioned I've been programming for 30 years.
> >
> > What I'm doing here is assigning a SINGLE boolean variable based on
> > the comparison of array contents. If I did this in VB or VBA , there
> > would be no issue. Are you saying the boolean takes on the
> > characteristic of the tested array? I think Tradeestation does
> > something like that.
> >
> > If thats the case , how would you
> >
> > If I say Var1=x(5)-y(2), then Var1 is not an array.
> >
> > Explain how:
> > if (PassTest==False) i=0;
> > generates an array error??
> >
> >
> > Please explain the actual reason, I've read the docs and there's
> > nothing there to make this clear.
> >
> >
> > ================================================================
> > Days=Param("Days To Test",3,1,15,1);
> >
> > PassTest=True;
> >
> > for(i=Days; i>0 ; i--)
> >
> > {
> > TestVolume = IIf((Ref(Volume ,-i+1)> Ref(Volume ,-i)),True,False);
> >
> > PassTest = IIf(testvolume == False,False,PassTest );
> >
> >
> > if (PassTest==False) i=0;
> >
> >
> > }
> >
> >
> > _TRACE("--------------------------------- ");
> >
> > FL1=PassTest;
> > FL2=Close >Param("ClosingPrice",5,0,999999,1);
> >
> > Filter = FL1 AND FL2;
> >
> > AddColumn(Close,"Close",1.4);
> > AddColumn(Volume,"Volume",1.0);
> > AddTextColumn( FullName(), "Full name", 77);
> >
> > AddColumn(Ref(Volume,-1),"Volume -1",1.0);
> > AddColumn(Ref(Volume,-2),"Volume -2",1.0);
> > AddColumn(Ref(Volume,-3),"Volume -3",1.0);
> >
> >
> >
> > Please note that this group is for discussion between users only.
> >
> > To get support from AmiBroker please send an e-mail directly to
> > SUPPORT {at} amibroker.com
> >
> > For NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG:
> > http://www.amibroker.com/devlog/
> >
> > For other support material please check also:
> > http://www.amibroker.com/support.html
> >
> > Yahoo! Groups Links
> >
> >
> >
> >
>
>
>
> Please note that this group is for discussion between users only.
>
> To get support from AmiBroker please send an e-mail directly to
> SUPPORT {at} amibroker.com
>
> For NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG:
> http://www.amibroker.com/devlog/
>
> For other support material please check also:
> http://www.amibroker.com/support.html
>
> Yahoo! Groups Links
>
>
>
>
Content-Description: "AVG certification"
No virus found in this incoming message.
Checked by AVG Free Edition.
Version: 7.5.432 / Virus Database: 268.15.9/573 - Release Date: 12/5/2006 4:07 PM
|