Matplotlib NumPy 安装

深碍√TFBOYSˉ_ 2022-12-31 01:21 193阅读 0赞

### Matplotlib NumPy 安装 ###

*  numpy
 *  matplotlib
 *  画图
 *  figure

# numpy #

pip3 install numpy

# matplotlib #

pip3 install matplotlib

# 画图 #

#!/usr/bin/env python3
    
    import matplotlib.pyplot as plt 
    import numpy as np
    
    x = np.linspace(-5, 5, 100)     #定义x轴，-5到5，数据个数是100
    y = 2*x + 1     #定义y函数
    
    plt.figure()    #定义一个窗口
    plt.plot(x, y)  #画图
    plt.show()      #显示图像

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTA5NTM2OTI_size_16_color_FFFFFF_t_70]

# figure #

#!/usr/bin/env python3
    
    import matplotlib.pyplot as plt 
    import numpy as np
    
    x = np.linspace(-5, 5, 20)     #定义x轴，-5到5，数据个数是100
    y1 = 2*x + 1     #定义y函数
    y2=x**2
    
    plt.figure()    #定义一个窗口
    plt.plot(x, y1)  #画图
    
    plt.figure()
    plt.plot(x, y2)
    
    plt.show()      #显示图像

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTA5NTM2OTI_size_16_color_FFFFFF_t_70 1]

--------------------

参考：

1.  [NumPy][]
2.  [Installing matplotlib][]
3.  [Usage matplotlib][]
4.  [matplotlib 基本用法][matplotlib]

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[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTA5NTM2OTI_size_16_color_FFFFFF_t_70 1]: https://img-blog.csdnimg.cn/20201227161910161.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTA5NTM2OTI=,size_16,color_FFFFFF,t_70
[NumPy]: https://numpy.org/
[Installing matplotlib]: https://matplotlib.org/users/installing.html
[Usage matplotlib]: https://matplotlib.org/tutorials/introductory/usage.html
[matplotlib]: https://mofanpy.com/tutorials/data-manipulation/plt/basic-usage/