Matplotlib没有显示图 [英] Matplotlib didn’t show the plot

问题描述

我不知道为什么我的matplotlib不显示图，也没有错误.我认为我在安装上缺少了一些东西，因为在IPython笔记本中，使用％mayplotlib inline 指令的QtIpython没问题，但是从终端或脚本运行时却什么也没显示.有什么想法吗?

I don’t know why my matplotlib didn’t show plots, and no errors too. I thinks I missing something on its installation because when in IPython notebooks an QtIpython using %mayplotlib inline directive have no problems but when running from terminal or script didn’t show anything. Any ideas ??

例如，在QtIPython和Ipython笔记本中运行

for example, in QtIPython and Ipython notebook I run

%matplotlib inline
import matplotlib.pyplot as plt
fig = plt.figure()
ax = fig.add_subplot(111, aspect='equal')
ax.plot([1,2,3,4,5,6,7,8,9,0],[2,3,4,5,6,7,8,9,0,11], '-r')
ax.grid()
plt.show()

并且情节显示确定！

但在带有

import matplotlib.pyplot as plt
fig = plt.figure()
ax = fig.add_subplot(111, aspect='equal')
ax.plot([1,2,3,4,5,6,7,8,9,0],[2,3,4,5,6,7,8,9,0,11], '-r')
ax.grid()
plt.show()

什么都没显示

推荐答案

如果在IPython Notebook中内联使用matplotlib，则图将自动显示.如果在脚本中绘制图形，则必须在末尾放置 plt.show()才能真正显示该图.在终端中，您还可以使用 plt.ion()开启互动模式.

If you use matplotlib inline in IPython notebook, the plots are shown automatically. If you plot things in a script you have to put a plt.show() at the end to actually show the figure. In the terminal you can also use plt.ion() to switch on intreactive mode.

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