Re: [Matplotlib-users] Failed pip install on OSX

[Scott L. <sl...@sp...>]

On Aug 4, 2013, at 4:47 PM, Matthew Brett <mat...@be...> wrote:

> Hi,
> 
> Congratulations on the new release.
> 
> I just tried installing in a fresh installation of Python 2.7 from Python.org
> 
> Am I right in thinking the recommended method is:
> 
>    pip install matplotlib
> 
> ?  I did this, and then:
> 
>>>> import matplotlib.pyplot as plt
> Traceback (most recent call last):
>  File "<stdin>", line 1, in <module>
>  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/matplotlib/pyplot.py",
> line 24, in <module>
>    import matplotlib.colorbar
>  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/matplotlib/colorbar.py",
> line 29, in <module>
>    import matplotlib.collections as collections
>  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/matplotlib/collections.py",
> line 23, in <module>
>    import matplotlib.backend_bases as backend_bases
>  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/matplotlib/backend_bases.py",
> line 50, in <module>
>    import matplotlib.textpath as textpath
>  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/matplotlib/textpath.py",
> line 14, in <module>
>    from matplotlib.mathtext import MathTextParser
>  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/matplotlib/mathtext.py",
> line 62, in <module>
>    import matplotlib._png as _png
> ImportError: dlopen(/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/matplotlib/_png.so,
> 2): Library not loaded: /usr/X11/lib/libpng12.0.dylib
>  Referenced from:
> /Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/matplotlib/_png.so
>  Reason: Incompatible library version: _png.so requires version
> 42.0.0 or later, but libpng12.0.dylib provides version 36.0.0
> 
> There were no previous versions of matplotlib installed.  This on OSX 10.6:
> 
> Python 2.7.5  just installed from python.org
> X11 installed from the Apple installation disks for 10.6 before `pip
> install matplotlib`
> No homebrew etc
> 
> Any hints about how I should debug this further?
> 
> Thanks a lot for any help,
> 
> Matthew

I was able to install numpy 1.7.1 and matplotlib 1.30 under OS X 10.6.8 with X11 version XQuartz 2.3.6 (xorg-server 1.4.2-apple56) and python 2.7.5 64-bit from python.org using pip 1.4.

Have you tried running Software Update?  If you installed X11 after updating to 10.6.8 you can run the combo updater ( http://support.apple.com/kb/DL1399 ) to get the latest X11.   Alternately, you could try installing XQuartz from http://xquartz.macosforge.org/landing/ 

hth,
Scott