On Thu, Nov 4, 2010 at 12:15 PM, Olli Sipilä <sippi...@hotmail.com> wrote: > Hello, > I have a problem reading a binary file on OS X 10.6. On my desktop mac (OS X > 10.4.11, Python 2.5.4, Numpy 1.3.0), the command > CELLS, NSIZE, NE = fromfile(fp, int32, 3), where fp is the filename, > correctly prints "21 20 300". However, when I try the above on my laptop > using Snow Leopard (Python 2.6.6, Numpy 1.5.0), I get the numbers "352321536 > 335544320 738263040". This results in a failure when trying to read the data > that comes afterwards (Numpy fails with "array too big"). I assume this > error may have something to do with 10.6 being 64-bit and 10.4 being 32-bit; > however, the Python 2.6.6. distribution is also 32-bit. Any thoughts on > this? > Thanks, > Olli Sipilä
Snow Leopard (10.6) is Intel only, so your laptop is using an Intel CPU which is little-endian. Is your Tiger (10.4) machine a PowerPC CPU? That would be big-endian, and therefore would write the floats to disk reversed compared to what a little-endian machine would expect. Peter _______________________________________________ NumPy-Discussion mailing list NumPy-Discussion@scipy.org http://mail.scipy.org/mailman/listinfo/numpy-discussion
