Re: The tri-rods.ctl control file

On Thu, 2006-06-08 at 10:46 +0100, Kai Lin Woon wrote:
> According to the file:
> (set! geometry-lattice (make lattice (size 1 1 no-size)
>                          (basis1 ) (/ (sqrt 3) 2) 0.5)
>                          (basis2 (/ (sqrt 3) 2) -0.5)))
> 
> I wonder anyone know what the hell does it mean by(/ sqrt 3) 2)?????

Sure, you mean (/ (sqrt 3) 2), which is polish notation for sqrt(3)/2
(sqrt being the square root).

Please note that you have an extra ')' after 'basis1' that should not be
there.

You may want to take a further look at Stevens Scheme links to better
understand ctl-files and Scheme in general:
http://ab-initio.mit.edu/wiki/index.php/Guile_and_Scheme_links
 
> Cheers
> KL Woon

Regards,
Theis