私はPythonでMatplotlibを構築しました。これにより、Matplotlibまたはその一部をインポートすると、正常に動作し、グラフが正常に機能します。
しかし、私は「Python for Data Analysis」を経験してきました。また、Ch.2のIPythonウォークスルーでは、次のように実行すると、名前の傾向がわかります...
total_births.plot(title='Total births by sex and year')
わかった...
ImportError: dlopen(/Library/Python/2.7/site-packages/matplotlib/_png.so, 2): Symbol not found: _png_create_info_struct
Webで見つけた修正のほとんどは、Matplotlibを使用したPythonの問題を解決しますが、特にIPythonでは解決しません。
以下は、IPythonの出力全体です。
ImportError Traceback (most recent call last)
<ipython-input-27-08d014b1a776> in <module>()
----> 1 total_births.plot(title='Total births by sex and year')
/Library/Python/2.7/site-packages/pandas/tools/plotting.pyc in plot_frame(frame, x, y, subplots, sharex, sharey, use_index, figsize, grid, legend, rot, ax, style, title, xlim, ylim, logx, logy, xticks, yticks, kind, sort_columns, fontsize, secondary_y, **kwds)
1453 logy=logy, sort_columns=sort_columns,
1454 secondary_y=secondary_y, **kwds)
-> 1455 plot_obj.generate()
1456 plot_obj.draw()
1457 if subplots:
/Library/Python/2.7/site-packages/pandas/tools/plotting.pyc in generate(self)
732 self._args_adjust()
733 self._compute_plot_data()
--> 734 self._setup_subplots()
735 self._make_plot()
736 self._post_plot_logic()
/Library/Python/2.7/site-packages/pandas/tools/plotting.pyc in _setup_subplots(self)
781 else:
782 if self.ax is None:
--> 783 fig = self.plt.figure(figsize=self.figsize)
784 ax = fig.add_subplot(111)
785 ax = self._maybe_right_yaxis(ax)
/Library/Python/2.7/site-packages/pandas/lib.so in pandas.lib.cache_readonly.__get__ (pandas/lib.c:27324)()
/Library/Python/2.7/site-packages/pandas/tools/plotting.pyc in plt(self)
859 @cache_readonly
860 def plt(self):
--> 861 import matplotlib.pyplot as plt
862 return plt
863
/Library/Python/2.7/site-packages/matplotlib/pyplot.py in <module>()
24 from matplotlib.cbook import dedent, silent_list, is_string_like, is_numlike
25 from matplotlib import docstring
---> 26 from matplotlib.figure import Figure, figaspect
27 from matplotlib.backend_bases import FigureCanvasBase
28 from matplotlib.image import imread as _imread
/Library/Python/2.7/site-packages/matplotlib/figure.py in <module>()
30
31 from matplotlib import _image
---> 32 from matplotlib.image import FigureImage
33
34 import matplotlib.colorbar as cbar
/Library/Python/2.7/site-packages/matplotlib/image.py in <module>()
20 # For clarity, names from _image are given explicitly in this module:
21 import matplotlib._image as _image
---> 22 import matplotlib._png as _png
23
24 # For user convenience, the names from _image are also imported into
ImportError: dlopen(/Library/Python/2.7/site-packages/matplotlib/_png.so, 2): Symbol not found: _png_create_info_struct
Referenced from: /Library/Python/2.7/site-packages/matplotlib/_png.so
Expected in: flat namespace
in /Library/Python/2.7/site-packages/matplotlib/_png.so