From: "baptiste Auguié" <ba208@...>
Date: 2007-07-01T20:07:43+09:00
Subject: Re: simple math operations on arrays



The names may have been confusing without the context. I believe the  
formula is right (as Octave's results show). long/short axis refer to  
a 3D ellipsoid of constant volume, radius referring to the degenerate  
case of a sphere. Thanks for the .to_f thing, I seem to be overdoing  
many things ;-)

thanks,

baptiste

On 1 Jul 2007, at 11:55, Robert Dober wrote:

> On 7/1/07, baptiste Augui� <ba208@exeter.ac.uk> wrote:
> Sorry if I have overlooked other issues but
>> > longAxis=aspectRatio.collect{ |x|  radius.to_f*((x.to_f)**(-2/3)) }
> -2/3 is not what you expect it to be, I'd say, cause you'd probably
> written -1 than or just divided radius by x.
>
> radius and x seem to be floats already, you might save some  
> keystrokes there ;)
> <snip>
> HTH
> Robert
>