matplotlib-users

[Matplotlib-users] error in savefig with wxAgg backend

[Jeff P. <jef...@se...>]

Hello,

I'm trying to use savefig in my wx app and I'm using wxAgg backend. I'm
getting this error:

 

FILE .maplotlib\backends\backend_bases.py, line 397 in print_png

Self.get_renderer()._renderer.write_png(filename, self.figure.dpi.dpi.get())

TypeError: cannot return std::string from Unicode object

 

I'm simply calling this:

 

self.figure.savefig(image_file,

                            facecolor='w',

                            edgecolor='w')

 

How do I fix this problem? Thanks.

 

Jeff

 

 

 

Re: [Matplotlib-users] error in savefig with wxAgg backend

[Michael D. <md...@st...>]

What version of matplotlib are you using?  I have a vague recollection 
that this was fixed at one point.

In any case, you should be able to get around this by casting your 
filename to a string as such:

self.figure.savefig(str(image_file))

Hope that works for you,
Mike

Jeff Peery wrote:
> Hello,
> 
> I’m trying to use savefig in my wx app and I’m using wxAgg backend. I’m 
> getting this error:
> 
>  
> 
> FILE …maplotlib\backends\backend_bases.py, line 397 in print_png
> 
> Self.get_renderer()._renderer.write_png(filename, self.figure.dpi.dpi.get())
> 
> TypeError: cannot return std::string from Unicode object
> 
>  
> 
> I’m simply calling this:
> 
>  
> 
> self.figure.savefig(image_file,
> 
>                             facecolor='w',
> 
>                             edgecolor='w')
> 
>  
> 
> How do I fix this problem? Thanks.
> 
>  
> 
> Jeff
> 
>  
> 
>  
> 
>  
> 
> 
> ------------------------------------------------------------------------
> 
> -------------------------------------------------------------------------
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> 
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> Matplotlib-users mailing list
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-- 
Michael Droettboom
Science Software Branch
Operations and Engineering Division
Space Telescope Science Institute
Operated by AURA for NASA

Re: [Matplotlib-users] error in savefig with wxAgg backend

[Jeff P. <jef...@se...>]

Hi Mike, thanks for the tip. I will try it. I'm using 0.91.2.

Thanks,
Jeff

-----Original Message-----
From: Michael Droettboom [mailto:md...@st...] 
Sent: Monday, March 03, 2008 5:06 AM
To: Jef...@se...
Cc: mat...@li...
Subject: Re: [Matplotlib-users] error in savefig with wxAgg backend

What version of matplotlib are you using?  I have a vague recollection 
that this was fixed at one point.

In any case, you should be able to get around this by casting your 
filename to a string as such:

self.figure.savefig(str(image_file))

Hope that works for you,
Mike

Jeff Peery wrote:
> Hello,
> 
> I'm trying to use savefig in my wx app and I'm using wxAgg backend. I'm 
> getting this error:
> 
>  
> 
> FILE .maplotlib\backends\backend_bases.py, line 397 in print_png
> 
> Self.get_renderer()._renderer.write_png(filename,
self.figure.dpi.dpi.get())
> 
> TypeError: cannot return std::string from Unicode object
> 
>  
> 
> I'm simply calling this:
> 
>  
> 
> self.figure.savefig(image_file,
> 
>                             facecolor='w',
> 
>                             edgecolor='w')
> 
>  
> 
> How do I fix this problem? Thanks.
> 
>  
> 
> Jeff
> 
>  
> 
>  
> 
>  
> 
> 
> ------------------------------------------------------------------------
> 
> -------------------------------------------------------------------------
> This SF.net email is sponsored by: Microsoft
> Defy all challenges. Microsoft(R) Visual Studio 2008.
> http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/
> 
> 
> ------------------------------------------------------------------------
> 
> _______________________________________________
> Matplotlib-users mailing list
> Mat...@li...
> https://lists.sourceforge.net/lists/listinfo/matplotlib-users

-- 
Michael Droettboom
Science Software Branch
Operations and Engineering Division
Space Telescope Science Institute
Operated by AURA for NASA

Re: [Matplotlib-users] error in savefig with wxAgg backend

[Vincent Favre-N. <vi...@us...>]

	Hi,

 See the bug here (and the answers) :
http://www.mail-archive.com/mat...@li.../msg02348.html

  From the last answer it appears this was fixed after 0.91.2

  It affects saving png's (other formats work) from the GUI, but savefig() 
should work.

	Vincent
-- 
Vincent Favre-Nicolin
Université Joseph Fourier
http://v.favrenicolin.free.fr
ObjCryst & Fox : http://objcryst.sourceforge.net