Re: [Matplotlib-users] OSError when exporting figure in EPS

[massimo s. <mas...@un...>]

Darren Dale ha scritto:
>> I noticed the following error when in my application I try to export the
>> plot in EPS format. The odd thing is that the export actually works and
>> produces a good eps file, but nevertheless...
>>
>> File "hooke.py", line 354, in ExportImage #that's my wxpython+MPL app
>>      self.figure.savefig(filename)
>>    File "/usr/lib/python2.4/site-packages/matplotlib/figure.py", line
>> 660, in savefig
>>      self.canvas.print_figure(*args, **kwargs)
>>    File
>> "/usr/lib/python2.4/site-packages/matplotlib/backends/backend_ps.py",
>> line 1123, in print_figure
>>      else: shutil.move(tmpfile, outfile)
>>    File "/usr/lib/python2.4/shutil.py", line 193, in move
>>      copy2(src,dst)
>>    File "/usr/lib/python2.4/shutil.py", line 93, in copy2
>>      copystat(src, dst)
>>    File "/usr/lib/python2.4/shutil.py", line 68, in copystat
>>      os.utime(dst, (st.st_atime, st.st_mtime))
>> OSError: [Errno 1] Operation not permitted: 'figura001.eps'
> 
> please submit a short script that reproduces the problem.

I have just reproduced it by doing an histogram in an interactive 
ipython --pylab session and then exporting as 'figure.eps'.

Just:
a=[...] <--numbers to histogram
hist(a)
savefig('hist001.eps')

gives:

exceptions.OSError                                   Traceback (most 
recent call last)

/users/Massimo/synuclein/<ipython console>

/usr/lib/python2.4/site-packages/matplotlib/pylab.py in savefig(*args, 
**kwargs)
     809 def savefig(*args, **kwargs):
     810     fig = gcf()
--> 811     return fig.savefig(*args, **kwargs)
     812 if Figure.savefig.__doc__ is not None:
     813     savefig.__doc__ = _shift_string(Figure.savefig.__doc__)

/usr/lib/python2.4/site-packages/matplotlib/figure.py in savefig(self, 
*args, **kwargs)
     658                 kwargs[key] = rcParams['savefig.%s'%key]
     659
--> 660         self.canvas.print_figure(*args, **kwargs)
     661
     662     def colorbar(self, mappable, cax=None, **kw):

/usr/lib/python2.4/site-packages/matplotlib/backends/backend_gtkagg.py 
in print_figure(self, filename, dpi, facecolor, edgecolor, orientation, 
**kwargs)
     110             try:
     111                 agg.print_figure(filename, dpi, facecolor, 
edgecolor,
--> 112                                  orientation, **kwargs)
     113             except IOError, msg:
     114                 error_msg_gtk('Failed to save\nError message: 
%s'%(msg,), self)

/usr/lib/python2.4/site-packages/matplotlib/backends/backend_agg.py in 
print_figure(self, filename, dpi, facecolor, edgecolor, orientation, 
**kwargs)
     482                 ps = self.switch_backends(FigureCanvasPS)
     483                 ps.print_figure(filename, dpi, facecolor, 
edgecolor,
--> 484                                 orientation, **kwargs)
     485             else:
     486                 raise IOError('Do not know know to handle 
extension *%s' % ext)

/usr/lib/python2.4/site-packages/matplotlib/backends/backend_ps.py in 
print_figure(self, outfile, dpi, facecolor, edgecolor, orientation, 
papertype)
    1121                 fh = file(tmpfile)
    1122                 print >>outfile, fh.read()
-> 1123             else: shutil.move(tmpfile, outfile)
    1124
    1125     def _print_figure_tex(self, outfile, dpi, facecolor, 
edgecolor, orientation,

/usr/lib/python2.4/shutil.py in move(src, dst)
     191             rmtree(src)
     192         else:
--> 193             copy2(src,dst)
     194             os.unlink(src)
     195

/usr/lib/python2.4/shutil.py in copy2(src, dst)
      91         dst = os.path.join(dst, os.path.basename(src))
      92     copyfile(src, dst)
---> 93     copystat(src, dst)
      94
      95

/usr/lib/python2.4/shutil.py in copystat(src, dst)
      66     mode = stat.S_IMODE(st.st_mode)
      67     if hasattr(os, 'utime'):
---> 68         os.utime(dst, (st.st_atime, st.st_mtime))
      69     if hasattr(os, 'chmod'):
      70         os.chmod(dst, mode)

OSError: [Errno 1] Operation not permitted: 'hist001.eps'

MPL is 0.87.3 compiled from source on gnu/linux Kubuntu 6.06
Thanks,
m.

-- 
Massimo Sandal
University of Bologna
Department of Biochemistry "G.Moruzzi"

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