gnuplot-py-users

[Gnuplot-py-users] problem with gnuplot in XP

[Titi A. <tia...@ya...>]

Hi all,

I made 2 arrays, which are i and uzuy (both are
float). And I want to plot the graph between those
arrays.
 
I followed from the manual

==================

from Gnuplot import Gnuplot, Data

g=Gnuplot()
results=Data(i,uzuy)

g.plot(results) 
=================

here I got the message

============================
Traceback (most recent call last):
  File "<pyshell#85>", line 1, in -toplevel-
    g.plot(i,uzuy)
  File
"C:\Python23\Lib\site-packages\Gnuplot\_Gnuplot.py",
line 274, in plot
    self.refresh()
  File
"C:\Python23\Lib\site-packages\Gnuplot\_Gnuplot.py",
line 215, in refresh
    self(self.plotcmd + ' ' + string.join(plotcmds, ',
'))
  File
"C:\Python23\Lib\site-packages\Gnuplot\_Gnuplot.py",
line 199, in __call__
    self.gnuplot(s)
  File
"C:\Python23\Lib\site-packages\Gnuplot\gp_win32.py",
line 125, in __call__
    self.write(s + '\n')
IOError: [Errno 22] Invalid argument
======================================

FYI, I use python2.3,Gnuplot-py-1.7 and winXP. Any
problems
with my code ??

Thanks



		
__________________________________ 
Start your day with Yahoo! - Make it your home page! 
http://www.yahoo.com/r/hs

Re: [Gnuplot-py-users] problem with gnuplot in XP

[Michael H. <mh...@al...>]

Titi Anggono wrote:
> [...]
> here I got the message
> 
> ============================
> Traceback (most recent call last):
> [...]
>   File
> "C:\Python23\Lib\site-packages\Gnuplot\gp_win32.py",
> line 125, in __call__
>     self.write(s + '\n')
> IOError: [Errno 22] Invalid argument
> ======================================
> 
> FYI, I use python2.3,Gnuplot-py-1.7 and winXP. Any
> problems with my code ??

I don't use windows, but I believe that this problem usually indicates
that gnuplot (i.e., the program, not the Python interface) didn't start
up correctly.  It could be a PATH problem, for example.  If you search
the mailing list archives you will see several similar questions and
responses.

[Including the above paragraph :-) ]

I just added this question to the FAQ.

Windows users are encouraged to submit a patch to produce a better error
message for this situation.  It would help new users a lot.  (Just
remember that it has to work for all windows versions.)

Michael

Re: [Gnuplot-py-users] problem with gnuplot in XP

[Titi A. <tia...@ya...>]

Finally, I tried another way to plot the graph :)

I found that SciPy has subpackage gplt that requires
Gnuplot. I used gplt and the plot shown.

Titi

--- Michael Haggerty <mh...@al...> wrote:

> Titi Anggono wrote:
> > [...]
> > here I got the message
> > 
> > ============================
> > Traceback (most recent call last):
> > [...]
> >   File
> >
> "C:\Python23\Lib\site-packages\Gnuplot\gp_win32.py",
> > line 125, in __call__
> >     self.write(s + '\n')
> > IOError: [Errno 22] Invalid argument
> > ======================================
> > 
> > FYI, I use python2.3,Gnuplot-py-1.7 and winXP. Any
> > problems with my code ??
> 
> I don't use windows, but I believe that this problem
> usually indicates
> that gnuplot (i.e., the program, not the Python
> interface) didn't start
> up correctly.  It could be a PATH problem, for
> example.  If you search
> the mailing list archives you will see several
> similar questions and
> responses.
> 
> [Including the above paragraph :-) ]
> 
> I just added this question to the FAQ.
> 
> Windows users are encouraged to submit a patch to
> produce a better error
> message for this situation.  It would help new users
> a lot.  (Just
> remember that it has to work for all windows
> versions.)
> 
> Michael
> 



	
		
__________________________________ 
Yahoo! Mail - PC Magazine Editors' Choice 2005 
http://mail.yahoo.com

Re: [Gnuplot-py-users] problem with gnuplot in XP

[Fernando P. <Fer...@co...>]

Titi Anggono wrote:
> Finally, I tried another way to plot the graph :)
> 
> I found that SciPy has subpackage gplt that requires
> Gnuplot. I used gplt and the plot shown.

You may not want to rely on scipy.gplt.  It is deprecated and has been removed 
from the current release.

Regards,

f