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POmatplotlib.pyplot issue python
 

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  1. POmatplotlib.pyplot issue python
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    <p>I'm experiencing a problem with matplotlib, to be more precise with pyplot.</p> <p>Just after installing, doing </p> <pre><code>import matplotlib.pyplot </code></pre> <p>gives me this error:</p> <pre><code>ImportError: dlopen(/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/matplotlib/_png.so, 2): Symbol not found: _png_create_info_struct Referenced from: /Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/matplotlib/_png.so Expected in: flat namespace in /Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/matplotlib/_png.so </code></pre> <p>So I have no idea what is going on. I'm on Mac OS X 10.6, I have installed python2.7 from disk image and matplotlib from the terminal by using the tar.gz and doing the usual </p> <pre><code>python setup.py build python setup.py install </code></pre> <p>When the installation starts I see:</p> <pre><code>BUILDING MATPLOTLIB matplotlib: 1.1.0 python: 2.7 (r27:82508, Jul 3 2010, 21:12:11) [GCC 4.0.1 (Apple Inc. build 5493)] platform: darwin REQUIRED DEPENDENCIES numpy: 1.6.1 freetype2: 10.0.4 OPTIONAL BACKEND DEPENDENCIES libpng: 1.2.44 Tkinter: no * TKAgg requires Tkinter Gtk+: no * Building for Gtk+ requires pygtk; you must be able * to "import gtk" in your build/install environment Mac OS X native: yes Qt: no Qt4: no Cairo: no OPTIONAL DATE/TIMEZONE DEPENDENCIES datetime: present, version unknown dateutil: matplotlib will provide pytz: matplotlib will provide adding pytz OPTIONAL USETEX DEPENDENCIES dvipng: 1.13 ghostscript: 8.61 latex: 3.1415926 </code></pre> <p>Any help guys please!</p> <p>Cheers</p>
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    1. CODo you have `libpng` (and possible `zlib`) dependencies?
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    2. COYep, see above...
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