[Numpy-discussion] Fix for ticket #1973

Charles R Harris charlesr.harris@gmail....
Mon Jan 16 09:52:10 CST 2012


On Mon, Jan 16, 2012 at 8:37 AM, Bruce Southey <bsouthey@gmail.com> wrote:

> **
> On 01/14/2012 04:31 PM, Charles R Harris wrote:
>
> I've put up a pull request for a fix to ticket #1973. Currently the fix
> simply propagates the maskna flag when the *.astype method is called. A
> more complicated option would be to add a maskna keyword to specify whether
> the output is masked or not or propagates the type of the source, but that
> seems overly complex to me.
>
> Thoughts?
>
> Chuck
>
>
> _______________________________________________
> NumPy-Discussion mailing listNumPy-Discussion@scipy.orghttp://mail.scipy.org/mailman/listinfo/numpy-discussion
>
>  Thanks for the correction and as well as the fix. While it worked for
> integer and floats (not complex ones), I got an error when using complex
> dtypes. This error that is also present in array creation of complex
> dtypes. Is this known or a new bug?
>
> If it is new, then we need to identify what functionality should handle
> np.NA but are not working.
>
> Bruce
>
> $ python
> Python 2.7 (r27:82500, Sep 16 2010, 18:02:00)
> [GCC 4.5.1 20100907 (Red Hat 4.5.1-3)] on linux2
> Type "help", "copyright", "credits" or "license" for more information.
> >>> import numpy as np
> >>> np.__version__ # pull request version
> '2.0.0.dev-88f9276'
> >>> np.array([1,2], dtype=np.complex)
> array([ 1.+0.j,  2.+0.j])
> >>> np.array([1,2, np.NA], dtype=np.complex)
> Traceback (most recent call last):
>   File "<stdin>", line 1, in <module>
>   File "/usr/lib64/python2.7/site-packages/numpy/core/numeric.py", line
> 1445, in array_repr
>     ', ', "array(")
>   File "/usr/lib64/python2.7/site-packages/numpy/core/arrayprint.py", line
> 459, in array2string
>     separator, prefix, formatter=formatter)
>   File "/usr/lib64/python2.7/site-packages/numpy/core/arrayprint.py", line
> 263, in _array2string
>     suppress_small),
>   File "/usr/lib64/python2.7/site-packages/numpy/core/arrayprint.py", line
> 724, in __init__
>     self.real_format = FloatFormat(x.real, precision, suppress_small)
> ValueError: Cannot construct a view of data together with the
> NPY_ARRAY_MASKNA flag, the NA mask must be added later
> >>> ca=np.array([1,2], dtype=np.complex, maskna=True)
> >>> ca[1]=np.NA
> >>> ca
> Traceback (most recent call last):
>   File "<stdin>", line 1, in <module>
>   File "/usr/lib64/python2.7/site-packages/numpy/core/numeric.py", line
> 1445, in array_repr
>     ', ', "array(")
>   File "/usr/lib64/python2.7/site-packages/numpy/core/arrayprint.py", line
> 459, in array2string
>     separator, prefix, formatter=formatter)
>   File "/usr/lib64/python2.7/site-packages/numpy/core/arrayprint.py", line
> 263, in _array2string
>     suppress_small),
>   File "/usr/lib64/python2.7/site-packages/numpy/core/arrayprint.py", line
> 724, in __init__
>     self.real_format = FloatFormat(x.real, precision, suppress_small)
> ValueError: Cannot construct a view of data together with the
> NPY_ARRAY_MASKNA flag, the NA mask must be added later
> >>>
>
>
Looks like a different bug involving the *.real and *.imag views. I'll take
a look.

Chuck
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://mail.scipy.org/pipermail/numpy-discussion/attachments/20120116/d4609e11/attachment.html 


More information about the NumPy-Discussion mailing list