python学习小记

python画的图表不能显示中文的时候,使用下面的代码可以解决这个问题:

import matplotlib
matplotlib.use('qt4agg')
#指定默认字体
matplotlib.rcParams['font.sans-serif'] = ['SimHei']
matplotlib.rcParams['font.family']='sans-serif'

画曲线的代码:

import numpy as np
import matplotlib.pyplot as plt
from pylab import *

import matplotlib
matplotlib.use('qt4agg')
#指定默认字体
matplotlib.rcParams['font.sans-serif'] = ['SimHei']
matplotlib.rcParams['font.family']='sans-serif'

# evenly sampled time at 200ms intervals
t = np.arange(1,10, 0.001)
# red dashes, blue squares and green triangles
plt.plot(t, t**(-0.5), 'r--', t, t**(-1), 'b-..', t, t**(-2), 'g.')

plt.title('区间[1,+∞]的反常积分与p的取值关系',fontsize=16)

plt.text(2, 0.1, r'p=2,收敛',color='green',fontsize=13)
plt.text(3.8, 0.3, r'p=1,发散',color='blue',fontsize=13)
plt.text(4.5, 0.55, r'p=0.5,发散',color='red',fontsize=13)

ylim(0, 1)
xlim(1, 10)
plt.show()

 

独热编码(One-Hot Encoding)

http://blog.csdn.net/pipisorry/article/details/61193868

posted @ 2018-07-30 17:17  dgi  阅读(122)  评论(0编辑  收藏  举报