导入Matplotlib没有显示

时间:2015-11-24 20:13:25

标签: python linux matplotlib

我正在尝试在我的linux服务器上运行python脚本并制作并保存一些图表。我安装了ipythonpylab以及matplotlib但是当我运行脚本时出现此错误:

Traceback (most recent call last):
  File "/root/dining_hall_graph.py", line 14, in <module>
    from pylab import * 
  File "/usr/lib64/python2.7/site-packages/pylab.py", line 1, in <module>
    from matplotlib.pylab import *
  File "/usr/lib64/python2.7/site-packages/matplotlib/pylab.py", line 265, in <module>
    from matplotlib.pyplot import *
  File "/usr/lib64/python2.7/site-packages/matplotlib/pyplot.py", line 97, in <module>
    _backend_mod, new_figure_manager, draw_if_interactive, _show = pylab_setup()
  File "/usr/lib64/python2.7/site-packages/matplotlib/backends/__init__.py", line 25, in pylab_setup
    globals(),locals(),[backend_name])
  File "/usr/lib64/python2.7/site-packages/matplotlib/backends/backend_gtkagg.py", line 10, in <module>
    from matplotlib.backends.backend_gtk import gtk, FigureManagerGTK, FigureCanvasGTK,\
  File "/usr/lib64/python2.7/site-packages/matplotlib/backends/backend_gtk.py", line 13, in <module>
    import gtk; gdk = gtk.gdk
  File "/usr/lib64/python2.7/site-packages/gtk-2.0/gtk/__init__.py", line 64, in <module>
    _init()
  File "/usr/lib64/python2.7/site-packages/gtk-2.0/gtk/__init__.py", line 52, in _init
    _gtk.init_check()
RuntimeError: could not open display

在这一行from pylab import *

如何在我的linux服务器上运行的python脚本中绘制和保存图形?

由于

1 个答案:

答案 0 :(得分:17)

你几乎不应该使用from pylab import *

numpyscipymatplotlib导入您需要的内容。

在没有显示的计算机上,您需要使用agg后端:

您可以通过指定环境变量MPLBACKEND

来实现此目的
$ MPLBACKEND=Agg python plot.py

或者在导入matplotlib之前导入matplotlib.pyplot

import matplotlib
matplotlib.use('Agg')

import matplotlib.pyplot as plt

plt.plot([1, 2, 1])
plt.savefig('test.pdf')

要将其设为默认值,您可以创建名为matplotlibrc的文件 在当前目录或$HOME/.config/matplotlib中包含以下内容:

backend: Agg

您可以启用X-Forwarding,因此主机上会弹出图表:

ssh -X user@server