Matplotlib绘图基础1

import matplotlib.pyplot as plt      #导入作图库
import numpy as np    #导入numpy
%matplotlib inline
plt.rcParams["font.sans-serif"] = 'SimHei'    #用来正常显示中文标签
plt.rcParams['axes.unicode_minus'] = False     #用来正常显示负号
%config InlineBackend.figure_format = 'svg'

plt.subplot(1,1,1)
x = np.array(["东区","北区","南区","西区"])
y = np.array([8566, 6482,5335,7310])
plt.bar(x,y,width=0.5,align="center",label="任务量")
plt.title("全国各分区任务量",loc="center")
for a,b in zip(x,y):
    plt.text(a,b,b,ha="center",va="bottom",fontsize=12)
plt.xlabel("分区")
plt.ylabel("任务量")
plt.legend()
plt.savefig("D:/123/123.jpg")