matplotlib 各种图绘制

Posted 2021-02-27 wocaonidaye

散点图绘制

from matplotlib import pyplot as plt
import random
from matplotlib import font_manager

myfont = font_manager.FontProperties(fname="C:WindowsFontssimkai.ttf")

# x轴显示日期
x_3 = range(1,32)
x_10 = range(51,82)

# 设置一个0~40随机温度显示在y轴
y_3 = [random.randint(0,40) for i in range(1,32)]
y_10 = [random.randint(0,40) for i in range(1,32)]

# 设置图形大小
plt.figure(figsize=(20, 8) ,dpi=80)

# 散点图用scatter
plt.scatter(x_3,y_3,label= "3月份")
plt.scatter(x_10, y_10, label = "10月份")

# 调整x的刻度
_x = list(x_3)+list(x_10)
_xtick = ["3月{}日".format(i) for i in x_3]
_xtick +=["10月{}日".format(i-50) for i in x_10]
plt.xticks(_x[::3], _xtick[::3] , rotation= 40, fontproperties= myfont)

# 设置标题
plt.xlabel("期日", fontproperties = myfont)
plt.ylabel("温度", fontproperties = myfont)
plt.title("三月份和十月份温度", fontproperties = myfont)

# 设置图形lebel显示位置
plt.legend(loc = 2,prop = myfont)

plt.show()