import matplotlib as mpl
import matplotlib.pyplot as plt
from matplotlib.font_manager import FontProperties
font_path = '/Users/huangbaixi/Desktop/SimHei.ttf'
def plot_demo():
#print(mpl.get_cachedir())
# 绘制折线图
font_prop = FontProperties(fname=font_path)
plt.rcParams['font.sans-serif'] = [font_prop.get_name()]
plt.rcParams['axes.unicode_minus'] = False
year = [2017, 2018, 2019, 2020]
people = [20, 40, 60, 70]
# 生成图表
plt.plot(year, people)
plt.xlabel('年份')
plt.ylabel('人口')
plt.title('人口增长')
# 设置纵坐标刻度
plt.yticks([0, 20, 40, 60, 80])
# 设置填充选项:参数分别对应横坐标,纵坐标,纵坐标填充起始值,填充颜色
plt.fill_between(year, people, 20, color='green')
# 显示图表
# plt.savefig("./plt.png")
plt.show()
这一版代码会出现
findfont: Generic family ‘sans-serif’ not found because none of the following families were found: SimHei
查询发现:
rcParams 有概率失败
import matplotlib as mpl
import matplotlib.pyplot as plt
from matplotlib.font_manager import FontProperties
font_path = '/Users/huangbaixi/Desktop/SimHei.ttf'
font_prop = FontProperties(fname=font_path)
def plot_demo():
year = [2017, 2018, 2019, 2020]
people = [20, 40, 60, 70]
plt.plot(year, people)
plt.xlabel('年份', fontproperties=font_prop)
plt.ylabel('人口', fontproperties=font_prop)
plt.title('人口增长', fontproperties=font_prop)
plt.yticks([0, 20, 40, 60, 80])
plt.fill_between(year, people, 20, color='green')
plt.show()
plot_demo()
这是成功的。
import matplotlib
# font_path = '/usr/share/fonts/SimHei.ttf'
font_path = '/Users/huangbaixi/Desktop/SimHei.ttf'
# 添加字体路径
matplotlib.font_manager.fontManager.addfont(font_path)
# 设置 matplotlib 的全局参数
matplotlib.rcParams['font.family'] = 'sans-serif'
matplotlib.rcParams['font.sans-serif'] = ['SimHei'] # 使用 SimHei 字体
matplotlib.rcParams['axes.unicode_minus'] = False # 正常显示负号
# 定义绘图函数
def plot_demo():
year = [2017, 2018, 2019, 2020]
people = [20, 40, 60, 70]
plt.plot(year, people)
plt.xlabel('年份')
plt.ylabel('人口')
plt.title('人口增长')
plt.yticks([0, 20, 40, 60, 80])
plt.fill_between(year, people, 20, color='green')
plt.show()
这也是可以的。