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RE: [amibroker] javascript - exception



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Basically, each time I encounter N consecutive up days, I want to perform some analysis to determine if a buy condition was met or not.  I think I understand what you have pointed out and it looks like I will have to iterate through all bars to accomplish what I want to do.

 

What I was hoping to do was do part in _javascript_ and part in AFL. For instance if N = 3, AFL would look like this I think:

            NPriceUpBars = C > Ref( C, -1 ) &&

Ref( C, -1 ) > Ref ( C, -2 ) &&

Ref (C, -2 ) > Ref( C, -3 ) ;

 

But what I wanted to do is perform the above “AND” (&&) operation in a loop so that all I would have to do is change my ‘N’ variable, and the code would work.

 

Have I explained what I am attempting to do?

 


From: amibroker@xxxxxxxxxxxxxxx [mailto:amibroker@xxxxxxxxxxxxxxx] On Behalf Of Dan Clark
Sent: Monday, December 05, 2005 12:18 AM
To: amibroker@xxxxxxxxxxxxxxx
Subject: RE: [amibroker] _javascript_ - exception

 

Hi.  “C” is an array of data.   PriceUp is a Boolean.    They are incompatible.

 

What are you trying to accomplish?  Where is this code being executed?   Why not use straight AFL?

 

Regards,

 

Dan.

 

 

 


From: amibroker@xxxxxxxxxxxxxxx [mailto:amibroker@xxxxxxxxxxxxxxx] On Behalf Of dimension@xxxxxxxxxxxxx
Sent: Sunday, December 04, 2005 9:00 PM
To: amibroker@xxxxxxxxxxxxxxx
Subject: [amibroker] _javascript_ - exception

 

Can anyone tell me why I am getting an error with the code below:

...

priceUp = True;

c1 = C;

for ( i = 1; i <= N; i++ )

{

       curBar = i * -1;

       priceUp = priceUp && c1 > Ref( C, curBar );

 

       if ( !priceUp ) break;

       ...

}

            …

 

I am getting an error on the line in red above.  The error is

Condition in IF, WHILE, FOR statements has to be Numeric or Boolean type.  You can not use array here, please use [] (array subscript operator) to access array elements”

 

(BTW< the Edit->Copy Error message function in Formula Editor is not working for me,  is this a bug?)

 





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