Kumar Appaiah wrote:
> On Fri, Feb 02, 2007 at 05:14:37AM -0800, Vijay Kumar wrote:
>> Hi,
>>
>> I want to import binary files generated from C/FORTRAN into matplotlib for
>> plotting.
>> Can this be done using 'load'?
>
> If you are using SciPy, scipy.io has a few functions which may
> help. scipy.io.fromfile, for example.
>
Or, if you have to pay attention to endianess, you could use something
like this.
import numpy as N
def load_binary_data(filename, dtype=float):
"""
We assume that the data was written
with write_binary_data() (little endian).
"""
f = open(filename, "rb")
data = f.read()
f.close()
_data = N.fromstring(data, dtype)
# data has been written by write_binary_data() in little endian
if sys.byteorder == 'big':
_data = _data.byteswap()
return _data
def write_binary_data(filename, data, dtype=float):
"""
Write binary data to a file and make sure it is always in little
endian format.
"""
f = open(filename, "wb")
_data = N.asarray(data, dtype)
# check byteorder of the system, convert to little endian if needed
if sys.byteorder == 'big':
_data = _data.byteswap()
f.write(_data)
f.close()
hth
--
cheers,
steve
Random number generation is the art of producing pure gibberish as
quickly as possible.
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