Re: [Matplotlib-users] image-loading module not found

[Darren D. <dd...@co...>]

>    Darren> After upgrading to Matplotlib 0.61, I am getting the
>    Darren> following error: Unable to load image-loading module:
>    Darren> C:\Program Files\Common
>    Darren> Files\GTK\2.0/lib/gtk-2.0/2.2.0/loaders/svg_loader.dll
>
>    Darren> The path is correct, the file exists, I wonder if the
>    Darren> mixed path seperators is causing trouble? I cant find the
>    Darren> location of this exception in matplotlib to look into it,
>    Darren> where should I look?
>
> I'm note getting this error. My guess is that it is coming from the
> final lines of backend_gtk.py
>
> # set icon used when windows are minimized
> if gtk.pygtk_version >= (2,2,0):
>    basedir = matplotlib.rcParams['datapath']
>    fname = os.path.join(basedir, 'matplotlib.svg')
>    try:   gtk.window_set_default_icon_from_file (fname)
>    except gobject.GError, exc: print >>sys.stderr, exc
>
> My win32 pygtk is older than 2.2.0 which may be why I am not seeing it.
> Would you mind seeing if this is indeed the problem (for starters,
> just replace the conditional with 'if 0:'.  If you get any more
> insight into the problem, be sure and let me know!
>
> Also, Steve, we might be better off here catching *all* exceptions
> rather than just the gobject error.  Darren, would you test to see if
> this works
>
>
> # set icon used when windows are minimized
> if gtk.pygtk_version >= (2,2,0):
>    basedir = matplotlib.rcParams['datapath']
>    fname = os.path.join(basedir, 'matplotlib.svg')
>    try:   gtk.window_set_default_icon_from_file (fname)
>    except: print >>sys.stderr, 'Could not load matplotlib icon'
>  
>
I tried this, and then started getting popups about dll's not being 
found. svg_loader.dll was not the problem.

The following were missing from Common Files\GTK\2.0\bin:
librsvg-2-2.dll
libart_lgpl_2-2.dll
libgsf-1-1.dll
libxml2.dll
zlib.dll

I had copies of all of these in my Gimp/bin directory, with the 
exception of zlib. At some point, months ago, I had downloaded zipfiles 
of all of these dll's, including zlib121 (not sure what I downloaded 
them for, probably the Gimp). Unzipped, zlib121 is called zlib1.dll, I 
renamed it zlib.dll and saved it with the other missing dll's in the 
GTK\2.0\bin. After resolving a dll clash (existing but incompatible 
zlib.dll in windows/system32), I think it is working.

By the way, the new toolbar is NICE. I like that Matplotlib is branding 
its windows, too, but what happened to the cardiogram? Matplotlib is too 
cool for a sin function, maybe the Strange Attractor is more 
appropriate? (Seems like something a Mac programmer would try.)

Darren