matplotlib.pyplot 标记出曲线上最大点和最小点的位置

最新推荐文章于 2025-03-07 20:53:03 发布

RunningJ

最新推荐文章于 2025-03-07 20:53:03 发布

阅读量5.1w

点赞数 10

分类专栏： python编程文章标签： numpy

本文链接：https://blog.youkuaiyun.com/Running_J/article/details/52119336

版权

python编程专栏收录该内容

7 篇文章

订阅专栏

废话不多说，直接上代码。
要求：正确安装了matplotlib库

import matplotlib.pyplot as plt
import numpy as np

def demo_test():
    a=np.array([0.15,0.16,0.14,0.17,0.12,0.16,0.1,0.08,0.05,0.07,0.06]);
    max_indx=np.argmax(a)#max value index
    min_indx=np.argmin(a)#min value index
    plt.plot(a,'r-o')
    plt.plot(max_indx,a[max_indx],'ks')
    show_max='['+str(max_indx)+' '+str(a[max_indx])+']'
    plt.annotate(show_max,xytext=(max_indx,a[max_indx]),xy=(max_indx,a[max_indx]))
    plt.plot(min_indx,a[min_indx],'gs')
    plt.show()



if __name__=="__main__":
    demo_test();