我在Ubuntu10.10 i386 (32位)上运行python3.2。
我只是出于学习的目的安装了matplotlib-py3 (来自源代码),当我尝试网站上的许多示例中的一个时:
##!/usr/local/bin/python3.2
#-*- coding:utf-8 -*-
import numpy as np
import matplotlib.pyplot as plt
# evenly sampled time at 200ms intervals
t = np.arange(0., 5., 0.2)
# red dashes, blue squares and green triangles
plt.plot(t, t, 'r--', t, t**2, 'bs', t, t**3, 'g^')
在终端导入matplotlib时,我得到了很多错误:
File "test.py", line 6, in <module>
import matplotlib.pyplot as plt
File "/usr/local/lib/python3.2/site-packages/matplotlib/pyplot.py", line 24, in <module>
from matplotlib.figure import Figure, figaspect
File "/usr/local/lib/python3.2/site-packages/matplotlib/figure.py", line 19, in <module>
from .axes import Axes, SubplotBase, subplot_class_factory
File "/usr/local/lib/python3.2/site-packages/matplotlib/axes.py", line 16, in <module>
import matplotlib.axis as maxis
File "/usr/local/lib/python3.2/site-packages/matplotlib/axis.py", line 14, in <module>
import matplotlib.text as mtext
File "/usr/local/lib/python3.2/site-packages/matplotlib/text.py", line 29, in <module>
from matplotlib.backend_bases import RendererBase
File "/usr/local/lib/python3.2/site-packages/matplotlib/backend_bases.py", line 47, in <module>
import matplotlib.textpath as textpath
File "/usr/local/lib/python3.2/site-packages/matplotlib/textpath.py", line 11, in <module>
from matplotlib.mathtext import MathTextParser
File "/usr/local/lib/python3.2/site-packages/matplotlib/mathtext.py", line 60, in <module>
import matplotlib._png as _png
ImportError: libpng15.so.15: cannot open shared object file: No such file or directory
我尝试了网站上的几个例子,他们都给出了相同的错误。当我在交互式python shell中单独import matplotlib
时,一切都很正常,只有当我导入像import matplotlib.pyplot as plt
这样的东西时,我才会看到所有这些错误。
我不知道我是安装错了还是做错了什么,但这就是我在这里发帖的原因。
谢谢。
发布于 2011-10-08 06:41:57
您的libpng安装不正确。很难说到底出了什么问题,但要么是您没有安装这些库,要么是它的开发头文件(但我怀疑matplotlib安装会失败),或者matplotlib假设了这些库的特定位置。他们在Ubuntu 10.10中进行了迁移。允许在同一台机器上安装32位和64位的库,所以如果matplotlib假设了一个特定的位置,那么10.10就会失败。
发布于 2015-03-13 18:51:10
不使用apt-get安装libpng
wget http://prdownloads.sourceforge.net/libpng/libpng-1.5.4.tar.gz?download
tar xzf libpng-1.5.4.tar.gz
./configure --prefix=/usr/local/libpng
或
./configure
make
sudo make install
https://stackoverflow.com/questions/7688001
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