[Numpy-discussion] Casting a float array into a string array

lorenzo bolla lbolla@gmail....
Fri Oct 5 08:34:11 CDT 2007


what's wrong with astype?

In [3]: x = numpy.array([[2.,3.],[4.,5.]])

In [4]: x.astype(str)
Out[4]:
array([['2', '3'],
       ['4', '5']],
      dtype='|S1')

and if you want a list:

In [5]: x.astype(str).tolist()
Out[5]: [['2', '3'], ['4', '5']]


L.


On 10/5/07, Matthieu Brucher <matthieu.brucher@gmail.com> wrote:
>
> Hi,
>
> I'm trying to cast a float array into a string array (for instance
> transforming [[2., 3.], [4., 5.]] into [['2.', '3.'], ['4.', '5.']]), I
> tried with astype(str) and every variation (str_, string, string_, string0),
> but not luck.
> Is there a function or a method of the array class that can fulfill my
> needs ? And if there is a way to add a formatting option ('1.1f' for
> instance), it would be even better.
>
> Matthieu
>
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>
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