matplotlib绘图案例

from matplotlib import pyplot as plt#导入画图模块
from matplotlib import font_manager#导入字体管理模块
my_font = font_manager.FontProperties(fname="C:/WINDOWS/Fonts/STSONG.TTF")

y_3=[15,13,17,16,17,14,18,19,20,22,25,21,22,20,23,24,24,23,22,21,20,24,26,27,25,24,29,28,29,25,28]
y_9=[25,24,26,24,22,25,27,29,28,26,25,23,24,26,25,23,26,24,22,20,20,21,18,17,14,16,14,15,12,15,18]
x_3=range(1,32)
x_9=range(45,76)
#调整图大小
plt.figure(figsize=(20,8),dpi=120)

plt.scatter(x_3,y_3,label="3月份")
plt.scatter(x_9,y_9,label="9月份")
#调整刻度
_x=list(x_3)+list(x_9)
_xtick_lables=["3月{}日".format(i) for i in x_1]
_xtick_lables+=["9月{}日".format(i-45) for i in x_2]
plt.xticks(_x[::3],_xtick_lables[::3],fontproperties = my_font,fontsize = 12)
#添加图例
plt.legend(loc="upper left",prop=my_font)

#添加描述信息
plt.xlabel("时间",fontproperties=my_font)
plt.ylabel("温度",fontproperties=my_font)
plt.title("温度散点图",fontproperties=my_font)
plt.show()