import matplotlib.pyplot as plt
plt.rcParams['font.sans-serif'] = ['SimHei']
plt.rcParams['axes.unicode_minus'] = False
x = range(9)
y = [5.12, 5.15, 5.13, 5.10, 5.2, 5.25, 5.19, 5.24, 5.31]
c = 0.5 * (min(x) + max(x))
d = min(y) + 0.3 * (max(y)-min(y))
plt.plot(x, y, label='股票A收盤價', c='k', ls='-.', marker='D', lw=2)
plt.xticks(x, [
	'2022-03-27', '2022-03-28', '2022-03-29', '2022-03-30',
	'2022-03-31', '2022-04-01', '2022-04-04', '2022-04-05',
	'2022-04-06'], rotation=45)
plt.title('某股票收盤價時序圖')
plt.xlabel('日期')
plt.ylabel('價格')
plt.grid(True)
plt.legend()

# 標出每天的收盤價
for a, b in zip(x, y):
	plt.text(a, b+0.01, '%.1f'%b, ha='center', va='bottom', fontsize=9)

plt.annotate('最低價', (x[y.index(min(y))], min(y)), (x[y.index(min(y))] + 2, min(y)+0.06), xycoords='data',
			 arrowprops=dict(width=3,headwidth=10,headlength=20, facecolor='g',shrink=0.05), c='r',fontsize=20)
plt.show()

plt.subplots_adjust(bottom=0.2)

plt.subplots_adjust(left=0.1, right=0.9, bottom=0.1, top=0.9, wspace=0.3, hspace=0.3)

import matplotlib.pyplot as plt
import numpy as np
plt.rcParams['font.sans-serif'] = ['SimHei']
plt.rcParams['axes.unicode_minus'] = False
# 位置221 畫一幅簡單的折線圖
fig = plt.figure(1, facecolor='#33ff99', figsize=(10, 6))
ax1 = plt.subplot(221)
ax1.set_title('ax1')
ax1.set_facecolor("orange")
ax1.plot([1, 1, 0, 0, -1, 0, 1, 1, -1], c='r')
# 位置222 或一個橫軸為月份，的散點圖
ax2 = plt.subplot(222)
ax2.set_title('ax2')
ax2.set_facecolor("purple")
ax2.plot(['1月', '2月', '3月', '4月', '5月', '6月', '7月', '8月', '9月'], [1, 0, 2, 5, 3, 5, 8, 7, 9], ls='', marker='*')
# 位置223 繪制一份柱狀圖
ax3 = plt.subplot(223)
ax3.set_title('ax3')
ax3.set_facecolor("pink")
ax3.bar(['A類', 'B類', 'C類', 'D類', 'E類'], height=[200, 350, 600, 540, 430], color='#9900ff')
# 位置224 繪制一張箱線圖
ax4 = plt.subplot(224)
ax4.set_title('ax4')
np.random.seed(100)
data = np.random.randint(0, 100, (4, 4))
ax4.set_facecolor("blue")
ax4.boxplot(data, labels=('Open', 'High', 'Low', 'Close'))
# 添加標題
ax1.set_title('折線圖')
ax2.set_title('散點圖')
ax3.set_title('柱形圖')
ax4.set_title('箱線圖')
plt.subplots_adjust(left=0.1, right=0.9, bottom=0.1, top=0.9, wspace=0.3, hspace=0.3)
plt.show()