Hello,
I'm writing a library able to read LAS lidar files. I generally use it
under Linux without any problems. I'm now testing my library on a
Windows 7 64 bit computer and I meet some problems reading the file. I
generally use fromfile function to read the file. I noted that the
fromfile returns an arry with some zeros at the end if I read the whole
file or if i read only a finite number of data i get only a fraction of
them. By the way I have created a sample script that reproduces the
problem I noted:
""" Sample code """
import numpy as np
sz = 1000000
data = np.random.random(sz)
output = open('test.bin', 'w')
data.tofile(output)
output.close()
del output
print 'Original data:', data
fid = open('test.bin', 'r')
new_data = np.fromfile(fid)
fid.close()
del fid
print 'Data read:', new_data
fid = open('test.bin', 'r')
slice = np.fromfile(fid, count=100)
fid.close()
print '100 read data:', slice
The "new_data" array has several zeros at the end. The "slice" array has
not 100 items. At every code run the "slice" array size changes.
I'm using numpy 1.6.1 64bit (taken from Christoph Gohlke website) , with
python 2.7.2 64 bit.
Under Linux Ubuntu 10.10 64bit and numpy 1.6.1 the code works as expected.
Thanks.
Nicola
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