Wed, 29 Jul 2009 10:20:19 -0400, Neal Becker kirjoitti:
[clip]
> Can 'view' switch byteorder? Doesn't seem to work:
[clip]
I think not: view only alters the dtype, ie., the interpretation of the
block of memory. It does not physically reorder the data in memory, which
is necessary for unpacking to a different byte order.
The reliable way to unpack seems to be
np.asarray(a, dtype='<u4').view('u1')
which avoids copies when possible. Of course, you could do
if a.dtype.newbyteorder('<') != a.dtype:
a.byteswap(True)
b = a.view('u1')
to byte-swap in-place to little-endian order.
--
Pauli Virtanen
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