Thu, 15 Jul 2010 20:00:09 -0400, David Warde-Farley wrote:
(CCing NumPy-discussion where this really belongs)
On 2010-07-08, at 1:34 PM, cfra...@uci.edu wrote:
Need Complex numbers in the saved file.
Ack, this has come up several times according to list archives and no
one's been able to provide a real answer.
It seems that there is nearly no formatting support for complex numbers
in Python. for a single value, {0.real:.18e}{0.imag:+.18e}.format(val)
will get the job done, but because of the way numpy.savetxt creates its
format string this isn't a trivial fix.
Anyone else have ideas on how complex number format strings can be
elegantly incorporated in savetxt?
The bug here is that
z = np.complex64(1+2j)
'%.18e' % z
'1.00e+00'
float(np.complex64(1+2j))
1.0
This should raise an exception. I guess the culprit is at
scalarmathmodule.c.src:1023.
It should at least be changed to raise a ComplexWarning, which we now
anyway do in casting.
--
Pauli Virtanen
___
NumPy-Discussion mailing list
NumPy-Discussion@scipy.org
http://mail.scipy.org/mailman/listinfo/numpy-discussion
