import matplotlib.pyplot as mp
import numpy as np
x = np.linspace(-2 * np.pi, 2 * np.pi, 1000
)
y1 =
np.cos(x)
y2 =
np.sin(x)
mp.xticks([-2 * np.pi, -3 / 2 * np.pi, -np.pi, -1 / 2 * np.pi, 0, 1 / 2 * np.pi, np.pi, 3 / 2 * np.pi, 2 *
np.pi],
[r'$-2\pi$', r
'$-\frac{3\pi}{2}$', r
'$-\pi$', r
'$-\frac{\pi}{2}$', r
'$0$', r
'$\frac{\pi}{2}$', r
'$\pi$',
r'$\frac{3\pi}{2}$',
r'$2\pi$'])
mp.yticks([-2, -1.5, -1, -0.5, 0, 0.5, 1, 1.5, 2
])
mp.figure('哈哈', facecolor=
'lightgray')
mp.plot(x, y1, linestyle=
'-', linewidth=3, color=
'dodgerblue', alpha=0.5, label=r
'$y_1 = cos(x)$')
mp.figure('哈哈', facecolor=
'lightgray')
mp.plot(x, y2, linestyle=
':', linewidth=2, color=
'orangered', alpha=0.8, label=r
'$y_2 = sin(x)$')
ax =
mp.gca()
ax.spines['top'].set_color(
'none')
ax.spines['right'].set_color(
'none')
ax.spines['left'].set_position((
'data', 0))
ax.spines['bottom'].set_position((
'data', 0))
# 设置特殊点文本
mp.annotate(r
'$[\frac{\pi}{2},1]$', xycoords=
'data', xy=(np.pi / 2, 1), textcoords=
"offset points", xytext=(30, 30
),
fontsize=14, arrowprops=dict(arrowstyle=
'-|>', connectionstyle=
'angle3', color=
'red'))
mp.annotate(r'$[\frac{\pi}{2},0]$', xycoords=
'data', xy=(np.pi / 2, 0), textcoords=
"offset points", xytext=(20, -30
),
fontsize=14, arrowprops=dict(arrowstyle=
'-|>', connectionstyle=
'angle3', color=
'red'))
mp.scatter([np.pi / 2, np.pi / 2], [0, 1], marker=
'*', s=60, facecolor=(1, 1, 1, 1), edgecolor=
'red', zorder=3
)
# mp.hlines(1, -8, 8, colors='red', linestyles='--', linewidth=2)
# mp.hlines(-1, -8, 8, colors='red', linestyles='--', linewidth=2)
# mp.xlim(0, np.pi)
# mp.ylim(0, 1)
mp.legend(loc=1, bbox_to_anchor=(1.1, 1
))
mp.show()
转载于:https://www.cnblogs.com/yuxiangyang/p/11158245.html
相关资源：数据结构—成绩单生成器
