Grief with a complex value

Stefan van der Walt stefan at sun.ac.za
Thu Nov 9 02:56:38 CST 2006


On Thu, Nov 09, 2006 at 03:18:57AM -0500, Colin J. Williams wrote:
> 
>  >>> import numpy.core as _n
>  >>> _nt= _n.numerictypes
>  >>> value= 
> '\x00\x00\x00\x00\x00\x00\xf0?\x00\x00\x00\x00\x00\x00\x00@\x00\x00\x00\x00\x00\x00\x08@\x00\x00\x00\x00\x00\x00\x10@\x00\x00\x00\x00\x00\x00\x14@\x00\x00\x00\x00\x00\x00\x18@'
>  >>> _n.array(value, dtype= _nt.complex128, copy=True)
> Traceback (most recent call last):
>   File "<interactive input>", line 1, in <module>
> TypeError: a float is required
>  >>>

If I understand correctly, you would like to create an array from a
buffer:

In [12]: N.frombuffer(value,dtype=N.complex128)
Out[12]: array([ 1.+2.j,  3.+4.j,  5.+6.j])

Cheers
Stéfan

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