[Numpy-tickets] [NumPy] #312: numpy.rec.array doesn't create a copy of buffer passed
NumPy
numpy-tickets at scipy.net
Wed Oct 4 04:26:50 CDT 2006
#312: numpy.rec.array doesn't create a copy of buffer passed
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Reporter: faltet | Owner: somebody
Type: defect | Status: new
Priority: normal | Milestone: 1.0 Release
Component: numpy.lib | Version: devel
Severity: minor | Keywords:
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I don't know if the next behaviour is expected:
{{{
In [38]:ra=numpy.array([(1,2.3)], dtype="i2,f8")
In [39]:ra2=numpy.rec.array(ra, dtype="i2,f8")
In [40]:ra['f0']
Out[40]:array([1], dtype=int16)
In [41]:ra2['f0'] = 2
In [42]:ra['f0']
Out[42]:array([2], dtype=int16)
}}}
i.e. numpy.rec.array doesn't make a copy of the original array. I find
this a bit counter-intuitive, because it seems to me that all the array()
factories should deliver a copy of the buffer passed.
In case this is the expected behaviour, I'd say that adding a "copy"
parameter in numpy.rec.array would be convenient.
--
Ticket URL: <http://projects.scipy.org/scipy/numpy/ticket/312>
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