Hi all,
I'm trying to extract the data from a bitmap or .pnm file using the
following code:
import Image
img = Image.open("test.bmp","r")
data=img.getdata()
Unfortunately I get the following exception on Linux, but not on Windows:
>>> data=img.getdata()
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/local/lib/python2.5/site-packages/PIL/Image.py", line 796,
in getdata
self.load()
File "/usr/local/lib/python2.5/site-packages/PIL/ImageFile.py", line
147, in load
self.map = mmap.mmap(file.fileno(), size)
EnvironmentError: [Errno 19] No such device
At this time, I cannot provide the full bitmap for copyright reasons,
but I can provide some information about the bitmap:
[EMAIL PROTECTED]:~$ file test.bmp
test.bmp: PC bitmap data, Windows 3.x format, 1000 x 1000 x 8
The same code works for .ppm images in the same folder:
[EMAIL PROTECTED]:~$ convert test.bmp test.ppm
[EMAIL PROTECTED]:~$ python
import Image
img=Image.open("test.ppm")
data=img.getdata()
But does not work for .pnm images in the same folder:
[EMAIL PROTECTED]:~$ convert test.bmp test.pnm
[EMAIL PROTECTED]:~$ python
import Image
img=Image.open("test.pnm")
data=img.getdata()
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/local/lib/python2.5/site-packages/PIL/Image.py", line 796,
in getdata
self.load()
File "/usr/local/lib/python2.5/site-packages/PIL/ImageFile.py", line
147, in load
self.map = mmap.mmap(file.fileno(), size)
EnvironmentError: [Errno 19] No such device
PIL Version on Linux and Windows:
$Id: Image.py 2337 2005-03-25 07:50:30Z fredrik $
How can I avoid this error without converting each image into a
different format?
Thanks and regards,
Cameron.
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