matplotlib相关问题

matplotlib无法显示中文

import matplotlib as mpl
mpl.rcParams['font.sans-serif'] = ['KaiTi']
mpl.rcParams['font.serif'] = ['KaiTi']

matplotlib绘制子图

ax1 = plt.subplot(211)
ax1.plot(f1[limit_lower : limit_upper],y1[limit_lower:limit_upper], color="r")
ax1.set_title('FFT spectrum')
ax2 = plt.subplot(212)
ax2.plot(f2[limit_lower : limit_upper],y2[limit_lower:limit_upper])
ax2.set_title('PSD spectrum')

plt.tight_layout(2)