[SciPy-user] npfile deprecated?
Thu Oct 16 07:15:07 CDT 2008
On Oct 15 17:49 -0500, Robert Kern wrote:
> What functionality do you think that npfile provided which
> tofile()/fromfile() doesn't? npfile never wrote out header
> information. The files were always just the raw platform-specific
> binary bytes. It's API is somewhat more convenient (you can specify
> the shape in the method call rather than modifying it later), but
> that's about it.
Well ok, it's mostly only the API rather than functionallity.
I suppose that with tofile/fromfile, I could use approximately this
>>> sh = (3,5)
>>> ord = 'F'
>>> a = asarray(np.ramdom.random(sh), order=ord)
>>> dt = a.dtype
and on another machine
>>> a = fromfile('test.dat', dtype=dt).reshape(sh)
>>> a = asarray(a, order='F')
>>> if sys.byteorder == 'big': a = a.byteswap()
Here, and in the npfile case, one would use wrappers writing and reading
metainfos (dtype, order, byteorder and shape) to and from an extra file
(at least, I did this).
The only functionallity difference is that files on disk would be always
Anyway, god bless numpy.save() :-)
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