以下代码生成的轴刻度标签的字体不是 Helvetica,但仍然是默认的衬线 Computer Modern。非常感谢任何建议。
from matplotlib import rc, font_manager
from numpy import arange, cos, pi
from matplotlib.pyplot import figure, axes, plot, xlabel, ylabel, title, \
grid, savefig, show
sizeOfFont = 12
fontProperties = {'family':'sans-serif','sans-serif':['Helvetica'],
'weight' : 'normal', 'size' : sizeOfFont}
ticks_font = font_manager.FontProperties(family='Helvetica', style='normal',
size=sizeOfFont, weight='normal', stretch='normal')
rc('text', usetex=True)
rc('font',**fontProperties)
figure(1, figsize=(6,4))
ax = axes([0.1, 0.1, 0.8, 0.7])
t = arange(0.0, 1.0+0.01, 0.01)
s = cos(2*2*pi*t)+2
plot(t, s)
for label in ax.get_xticklabels():
label.set_fontproperties(ticks_font)
for label in ax.get_yticklabels():
label.set_fontproperties(ticks_font)
xlabel(r'\textbf{time (s)}')
ylabel(r'\textit{voltage (mV)}',fontsize=16,family='Helvetica')
title(r"\TeX\ is Number $\displaystyle\sum_{n=1}^\infty\frac{-e^{i\pi}}{2^n}$!",
fontsize=16, color='r')
grid(True)
savefig('tex_demo.pdf')
show()