[SciPy-user] extending a 2-dim array ?

Robert Kern robert.kern@gmail....
Tue Mar 18 16:40:33 CDT 2008


On Tue, Mar 18, 2008 at 4:34 PM, Stef Mientki <s.mientki@ru.nl> wrote:
> hello,
>
>  To combine a number of signals (of possible different length),
>  I need to extend a 2-dimensional array.
>
>  I succeeded, but it looks much too complex in my opinion:
>
>   a_list = [1,2,3,4,5]
>   a_vector = array ( a_list )
>   b_list = [11,22,33,44,55]
>   b_vector = array ( b_list )
>
>   ab_array = vstack (( a_vector, b_vector ))
>
>   # extend each signal with 1 zero element
>   extend = transpose ( vstack ( ( transpose ( ab_array ), zeros ((1,2)) )) )
>
>
>  does anyone know a more elegant (= more simple) method ?

Use hstack([ab_array, zeros([2,1])]).

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless
enigma that is made terrible by our own mad attempt to interpret it as
though it had an underlying truth."
 -- Umberto Eco


More information about the SciPy-user mailing list