beginner oo programming

[Multiscan]

On Tue, 25 Feb 2003 18:44:20 +0000, Mike Meyer wrote:
> 
> Note that this is orthogonal to Steven's suggestion, and you can do
> them both at once. In that case, can implement his "vector" with a
> one-line function and some carefully constructed classes:
> 
> def vector(coord1, coord2, class):
>     return class(coord1, coord2)
> 
> 
>         <mike

Thanks very mutch.
I'll try both indeed. 
Still It is not clear to me where to store transformation information 
(the matrix for going from one reference system to another).
But may be it's better if I read more carefully yours answers.
thanks again.
	giovanni