Home > Backend Development > Python Tutorial > Example of how python uses the matplotlib library to draw a pie chart

Example of how python uses the matplotlib library to draw a pie chart

高洛峰
Release: 2017-02-10 09:37:43
Original
2919 people have browsed it

Python强大的原因之一就在于其开源,有很多优秀的程序员为其提供了丰富的类库。Matplotlib就是其中之一,下面这篇文章主要介绍了python如何利用matplotlib库绘制饼图的方法示例,有需要的朋友们可以参考借鉴,下面来一起看看吧。

介绍

matplotlib 是python最著名的绘图库,它提供了一整套和matlab相似的命令API,十分适合交互式地进行制图。而且也可以方便地将它作为绘图控件,嵌入GUI应用程序中。

它的文档相当完备,并且 Gallery页面 中有上百幅缩略图,打开之后都有源程序。因此如果你需要绘制某种类型的图,只需要在这个页面中浏览/复制/粘贴一下,基本上都能搞定。

这篇文章给大家主要介绍了python用matplotlib绘制饼图的方法,话不多说,下面来看代码。

示例代码


import matplotlib.pyplot as plt

# The slices will be ordered and plotted counter-clockwise.
labels = 'Frogs', 'Hogs', 'Dogs', 'Logs'
sizes = [15, 30, 45, 10]
colors = ['yellowgreen', 'gold', 'lightskyblue', 'lightcoral']
explode = (0, 0.1, 0, 0) # only "explode" the 2nd slice (i.e. 'Hogs')

plt.pie(sizes, explode=explode, labels=labels, colors=colors,
  autopct='%1.1f%%', shadow=True, startangle=90)

# Set aspect ratio to be equal so that pie is drawn as a circle.
plt.axis('equal')


plt.savefig('D:\\pie.png')
plt.show()
Copy after login


结果

更多python利用matplotlib库绘制饼图的方法示例相关文章请关注PHP中文网!


Related labels:
source:php.cn
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Popular Tutorials
More>
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template