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1、plot线
2、scatter散点图
3、bar状图
# -*- coding: utf-8 -*-
"""
Created on Sun Jul 9 17:20:30 2017
@author: tfygg
"""
import matplotlib.pyplot as plt
import numpy as np
x = np.linspace(-10,10,20)
y = 2*x+1
z= x**2
plt.figure()
plt.plot(x, y,label = 'y')
plt.plot(x, z, color='red',linestyle='--',label='z')
plt.legend(loc='upper right')
plt.show()
plt.figure()
plt.scatter(x,z)
plt.show()
plt.figure()
plt.bar(x,z)
plt.show()