[Numpy-discussion] Re: asarray behaviour

[Chris Barker]

Colin J. Williams wrote:
> I'm puzzled by this.  There is already a matrix class which should 
> construct a matrix instance from a list, tuple or array or any subclass 
> of array - I haven't tested all of these.

A) I was speaking generically. I haven't made use of any particular 
matrix class myself.

B) I assume the standard matrix() constructor always creates a copy of 
the data, much like the NumPy array() constructor. In this case, the 
discussion was about the behavior of asarray(), which creates a new 
array if the argument is not an array, but returns the argument 
untouched if it already is an array. I was proposing that a matrix 
package (and any other subclass of ndarray) could benefit from a similar 
function.

-Chris



-- 
Christopher Barker, Ph.D.
Oceanographer
                                     		
NOAA/OR&R/HAZMAT         (206) 526-6959   voice
7600 Sand Point Way NE   (206) 526-6329   fax
Seattle, WA  98115       (206) 526-6317   main reception

Chris.Barker at noaa.gov