<pre name="code" class="python">在很多时候,例如写论文,例如写报告,例如做ppt,都需要花很多很多曲线图,让人家信服 毕竟数据可视化是人的本能。 假如读者您很不幸,像我一样不会用matlab之类的东西画图或者没办法用matlab画图,那么可以稍微关注一下python,因为python里面有很强大的库matplotlib,让用户直接用terminal就可以做大部分matlab画图能做的事情。 matplotlib的安装,可以先安装pip 然后 sudo pip install matplotlib 假如,现在任务是,从三个文本文档里面读入数据,然后画出曲线图然后比较,那么就可以像如下代码一样做。。
<pre name="code" class="python"> #!/usr/bin/env python import pylab as pl import numpy as np filename1 = 'NUMBERCUTOUT0' filename2 = 'NUMBERCUTOUT1' filename3 = 'NUMBERCUTOUT2' file1 = open(filename1,'r') file2 = open(filename2,'r') file3 = open(filename3,'r') value1 = [] value2 = [] value3 = [] for word in file1: value1.append(word[:-1]) for word in file2: value2.append(word[:-1]) for word in file3: value3.append(word[:-1]) length = len(value1) X = np.linspace(0,length,length,endpoint=True) fig = pl.figure(1) pl.plot(X,value1, color ='blue', linewidth = 1.0, linestyle =':',label='Straight-forward Structure') pl.plot(X,value2, color ='green',linewidth=1.0, linestyle='-', label='Single-branch Structure') pl.plot(X,value3, color ='red', linewidth=1.0, linestyle='--',label='Double-branch Structure') pl.legend(loc='upper right') pl.title('SingleBranch(Blue) DoubleBranch(Green) TribleBranch(Red)') pl.show()
原文地址:http://blog.csdn.net/hyichao_csdn/article/details/45293407