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At this point I have a question. If I want to do a simple boolean
test , assigning the result to a simple var, of two members of the
'volume' array , is that possible, or am I forced to be concerned with
the details of arrays.
And I do want to exit the loop at any failure, since 1 failure is
enough to disqualify the symbol.
--- In amibroker@xxxxxxxxxxxxxxx, "Paul Ho" <paultsho@xxx> wrote:
>
>
> Iif operates on both arrays and straight variables, but "if" only
operates
> on variables or individual elements
>
> PassTest = IIf(testvolume == False,False,PassTest ); is equivalent to
>
> For(i=0; i< barcount; i++)
> {
> if(testvolume[i] == 0)PassTest[i] = false;
> else PassTest[i] = PassTest[i]; // this is a straight translation
> but is redundant really
> }
> Now if you use if(PassTest == false) then it will generate an error
as it
> expects an element of the array and not the array itself. That
statement is
> actually ambiguous, if one element is false, you don't really want
to stop
> processing the loop, because other elements in this array might well be
> true.
>
>
>
>
> ________________________________
>
> From: amibroker@xxxxxxxxxxxxxxx [mailto:amibroker@xxxxxxxxxxxxxxx]
On Behalf
> Of Homar Simpson
> Sent: Tuesday, 5 December 2006 5:11 PM
> To: amibroker@xxxxxxxxxxxxxxx
> 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 Tradestation 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);
>
>
>
>
>
> Send instant messages to your online friends
http://au.messenger.yahoo.com
>
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