plt.show() 在 spyder ide 中不起作用 [英] plt.show() not working in spyder ide

问题描述

我是Python和Spyder的新手.我正在使用Python 2.7.13和Spyder 3.1.4.我无法使用 plt.show()处理我的数据，也无法从网站上复制一个简单的直方图示例.plt.draw() 也不起作用.我提出了类似的问题，将图形后端从内联更改为自动更改为Qt4更改为Qt5，但是这些都不起作用.如果在 IPython 控制台中键入 fig，它将显示图形.我在这里发布示例.任何有关如何解决此问题的建议都将受到赞赏.

I am new to Python and Spyder. I am using Python 2.7.13 and Spyder 3.1.4. I cannot get plt.show() to work on my data, and cannot reproduce a simple histogram example from the website. plt.draw() does not work either. I have changed the graphics backend from inline to automatic to Qt4 to Qt5 as a similar question proposed, but non of this has worked. If type fig in the IPython console, it will display the graph. I am posting the example here. Any suggestions on how to fix this are appreciated.

import numpy as np
import matplotlib.pyplot as plt
import matplotlib.mlab as mlab

mu, sigma = 100, 15
x = mu + sigma * np.random.randn(10000)

fig = plt.figure()
ax = fig.add_subplot(111)

# the histogram of the data
n, bins, patches = ax.hist(x, 50, normed=1, facecolor='green', alpha=0.75)

# hist uses np.histogram under the hood to create 'n' and 'bins'.
# np.histogram returns the bin edges, so there will be 50 probability
# density values in n, 51 bin edges in bins and 50 patches.  To get
# everything lined up, we'll compute the bin centers
bincenters = 0.5*(bins[1:]+bins[:-1])
# add a 'best fit' line for the normal PDF
y = mlab.normpdf( bincenters, mu, sigma)
l = ax.plot(bincenters, y, 'r--', linewidth=1)

ax.set_xlabel('Smarts')
ax.set_ylabel('Probability')
#ax.set_title(r'$\mathrm{Histogram\ of\ IQ:}\ \mu=100,\ \sigma=15$')
ax.set_xlim(40, 160)
ax.set_ylim(0, 0.03)
ax.grid(True)

plt.show()

推荐答案

更改您的IPython控制台图形设置.

Change your IPython console graphics settings.

如果您使用的是 Spyder，请按以下步骤操作:

If you are using Spyder here are the steps:

1. 转到工具.
2. 转到首选项.
3. 选择 IPython控制台.
4. 转到图形标签.
5. 在Graphics backend 部分下，选择Automatic 作为后端类型.

1. Go to Tools.
2. Go to Preferences.
3. Select IPython console.
4. Go to Graphics tab.
5. Under theGraphics backend section, select Automatic as the backend type.

然后，重新启动内核.

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