[Numpy-discussion] About asarray (list)

Lisandro Dalcin dalcinl@gmail....
Wed Aug 27 10:44:44 CDT 2008


On Wed, Aug 27, 2008 at 12:01 PM, Claude Gouedard <cgoued@gmail.com> wrote:
> Ok ,
> The same for asarray(1) ..
> The problem is that
> aa=asarray(1) is an numpy.array (right ? ) with a size 1 and a shape ( ) !
> No surprising ?

For me, this is not surprising at all :-) . Furthermore, if you try

In [1]: import numpy as np
In [2]: a = np.asarray(1)
In [3]: a.flags
Out[3]:
  C_CONTIGUOUS : True
  F_CONTIGUOUS : False
  OWNDATA : True
  WRITEABLE : True
  ALIGNED : True
  UPDATEIFCOPY : False

You see that this 0-dim array is WRITEABLE, this is a nice way to get
something similar to an scalar with can be safely modified in-place
and (pointer) passed to C/C++/Fortran.

BTW,  I'm using numpy 1.1.0, and the it seems 0-dim arrays are NOT
Fortran contiguous... Is this OK?



-- 
Lisandro Dalcín
---------------
Centro Internacional de Métodos Computacionales en Ingeniería (CIMEC)
Instituto de Desarrollo Tecnológico para la Industria Química (INTEC)
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