学习python画图模块plotnine:第一步安装

官网链接

https://plotnine.readthedocs.io/en/stable/index.html

知乎介绍的文章

https://zhuanlan.zhihu.com/p/47814353

简单介绍

语法类似于R语言的ggplot2包的python画图模块

安装

按照官网教程直接使用pip安装

pip install plotnine

遇到报错

ERROR: Cannot uninstall 'certifi'. It is a distutils installed project and thus we cannot accurately determine which files belong to it which would lead to only a partial uninstall.

搜索一番找到说可以在pip命令后加参数--ignore-installed certifi

于是使用命令安装

pip install -i https://pypi.tuna.tsinghua.edu.cn/simple plotnine --ignore-installed certifi

这次安装成功没有报错

python中尝试导入这个模块

from plotnine import *

提示

Bad key animation.mencoder_path in file C:UsersmingyAppDataLocalContinuumanaconda3libsite-packagesmatplotlibmpl-datastylelib_classic_test.mplstyle, line 509 ('animation.mencoder_path: mencoder')
You probably need to get an updated matplotlibrc file from
https://github.com/matplotlib/matplotlib/blob/v3.3.1/matplotlibrc.template
or from the matplotlib source distribution

搜索了一番，发现有人说可以卸载已经安装的matplotlib然后再重新安装试试使用pip命令卸载

pip uninstall matplotlib

重新安装命令

python -m pip install -U matplotlib --prefer-binary -i https://pypi.tuna.tsinghua.edu.cn/simple

matplotlib升级到了3.3.1 没有遇到报错打开python然后再导入plotnine模块

from plotnine import *

这次没有任何提示了

接下来试着运行其中的一个例子

from plotnine import *
from plotnine.data import mtcars
ggplot(mtcars,aes(x='wt',y='mpg',color='factor(gear)'))+geom_point()

image.png

ggplot(mtcars,aes(x='wt',y='mpg',color='factor(gear)'))+geom_point()+facet_wrap('~gear',scales="free")

image.png

保存为pdf文件

(ggplot(mtcars,aes(x='wt',y='mpg',color='factor(gear)'))+geom_point()+facet_wrap('~gear',scales="free")).save("Desktop/p1.pdf")