matplotlib绘制数学曲线

川长思鸟来 2023-07-06 14:51 43阅读 0赞

# python matplotlib绘制数学曲线 #

配套B站视频 https://www.bilibili.com/video/av83962883/

### 一.绘图实现三步 ###

简单实现绘图

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### 二.图形元素设置 ###

三大步,七小步绘制完整图形

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### 三.刻度及轴位置设置 ###

1.轴放在 0,0 位置  
2.x轴刻度 变成 π的形式

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### 四.创建有箭头新轴 图形 ###

1.创建新轴  
2.添加箭头  
3.显示中文字符

![format_png 6][]

### 五.对所绘制的曲线优化 ###

1.绘制标注点  
2.绘制标注线  
3.写注释文本

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### 六.八函数同图 ###

1.二元一次方程组  
2.二次方函数  
3.正弦函数  
4.余弦函数  
5.三次方函数  
6.指数函数  
7.对数函数  
8.sigmoid函数

![format_png 8][]

一些官方文档参考资料

1.plot中参数描述

https://matplotlib.org/api/\_as\_gen/matplotlib.pyplot.plot.html\#matplotlib.pyplot.plot

2.plt.grid()中各参数描述

https://matplotlib.org/api/\_as\_gen/matplotlib.pyplot.grid.html?highlight=grid\#matplotlib.pyplot.grid

3.plt.legend() 参数描述

https://matplotlib.org/api/\_as\_gen/matplotlib.pyplot.legend.html?highlight=legend\#matplotlib.pyplot.legend

4.ax.spines 方法及参数

https://matplotlib.org/api/spines\_api.html?highlight=spines\#matplotlib.spines.Spine.set\_position

5.plt.annotate 注释

https://matplotlib.org/api/\_as\_gen/matplotlib.pyplot.annotate.html?highlight=annotate\#matplotlib.pyplot.annotate

https://matplotlib.org/gallery/userdemo/connectionstyle\_demo.html?highlight=connectionstyle

6.散点图

https://matplotlib.org/api/\_as\_gen/matplotlib.axes.Axes.scatter.html?highlight=scatter\#matplotlib.axes.Axes.scatter

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原文链接：https://blog.csdn.net/weixin\_45080737/article/details/104057285

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