浙江建设职业技术学院提前招网站,广州做网站网络公司,网站设计集团,优化seo是什么晚上帮同学用Python脚本绘图#xff0c;大概需求是读取一个txt文件的两列分别作为x和y的值#xff0c;绘图即可#xff0c;代码如下#xff1a;
#coding:utf-8
import numpy as np
import matplotlib.pyplot as plt
import pylab
## 绘制该文件中的数据
## 需要引入pylab库…晚上帮同学用Python脚本绘图大概需求是读取一个txt文件的两列分别作为x和y的值绘图即可代码如下
#coding:utf-8
import numpy as np
import matplotlib.pyplot as plt
import pylab
## 绘制该文件中的数据
## 需要引入pylab库里面用到的函数和MATLAB里的非常类似
def plotData(x, y):
length len(y)
pylab.figure(1)
pylab.plot(x, y, rx)
pylab.xlabel(x)
pylab.ylabel(y)
pylab.show()#让绘制的图像在屏幕上显示出来
x []
y []
x [float(l.split()[3]) for l in open(07.txt)]
y [float(l.split()[11]) for l in open(07.txt)]
plotData(x,y)
如果对跑的效果不满意可以用matplotlib重绘代码如下
#coding:utf-8
import numpy as np
import matplotlib.pyplot as plt
import pylab## 绘制该文件中的数据
## 需要引入pylab库里面用到的函数和MATLAB里的非常类似
def plotData(x, y):
length len(y)
pylab.figure(1)
pylab.plot(x, y, rx)
pylab.xlabel(x)
pylab.ylabel(y)
#让绘制的图像在屏幕上显示出来x1 [float(l.split()[3]) for l in open(New.txt)]
y1 [float(l.split()[11]) for l in open(New.txt)]
x2 [float(l.split()[3]) for l in open(Initial.txt)]
y2 [float(l.split()[11]) for l in open(Initial.txt)]
plt.plot(x1, y1, b,linewidth2.5, linestyle-, labelcosine)
plt.plot(x2, y2, r,linewidth2.5, linestyle-, labelsine)
plt.legend(locupper left)
plt.show()
#plotData(x1,y1)
#plotData(x2,y2)
#pylab.show()
txt文件前几列示例如下
9.999795e-01 5.025123e-04 -6.380358e-03 -4.596714e-03 -5.005160e-04 9.999998e-01 3.144878e-04 -2.001524e-03 6.380515e-03 -3.112871e-04 9.999796e-01 9.154274e-02
9.999096e-01 1.061516e-03 -1.340599e-02 -1.001116e-02 -1.058762e-03 9.999994e-01 2.126022e-04 -4.359704e-03 1.340621e-02 -1.983884e-04 9.999101e-01 1.857373e-01
9.997800e-01 1.386756e-03 -2.092925e-02 -1.753371e-02 -1.395506e-03 9.999989e-01 -4.034725e-04 -6.859665e-03 2.092867e-02 4.325913e-04 9.997809e-01 2.834672e-01
9.995454e-01 2.025309e-03 -3.008212e-02 -2.863192e-02 -2.080074e-03 9.999962e-01 -1.789331e-03 -6.726660e-03 3.007839e-02 1.851091e-03 9.995458e-01 3.873100e-01
9.991403e-01 2.230707e-03 -4.139680e-02 -4.273697e-02 -2.379114e-03 9.999909e-01 -3.536042e-03 -7.303015e-03 4.138854e-02 3.631490e-03 9.991365e-01 5.011396e-01
9.984892e-01 2.145631e-03 -5.490591e-02 -6.000009e-02 -2.394373e-03 9.999871e-01 -4.464951e-03 -8.065471e-03 5.489562e-02 4.589671e-03 9.984816e-01 6.279359e-01
9.974753e-01 2.223074e-03 -7.097932e-02 -8.275693e-02 -2.545053e-03 9.999869e-01 -4.446103e-03 -8.995000e-03 7.096851e-02 4.615524e-03 9.974679e-01 7.669396e-01
9.959798e-01 9.912399e-04 -8.957233e-02 -1.090497e-01 -1.397593e-03 9.999890e-01 -4.473982e-03 -1.033982e-02 8.956691e-02 4.581182e-03 9.959703e-01 9.191805e-01
9.939836e-01 -3.564687e-04 -1.095286e-01 -1.415335e-01 -1.406643e-04 9.999897e-01 -4.531084e-03 -1.195088e-02 1.095291e-01 4.519231e-03 9.939733e-01 1.081913e00
9.912980e-01 -4.511767e-04 -1.316366e-01 -1.816057e-01 -1.745510e-04 9.999887e-01 -4.741873e-03 -1.604515e-02 1.316372e-01 4.723586e-03 9.912867e-01 1.251378e00
9.877899e-01 2.927872e-03 -1.557641e-01 -2.325643e-01 -3.900867e-03 9.999747e-01 -5.941284e-03 -2.265364e-02 1.557428e-01 6.476356e-03 9.877764e-01 1.425643e00
9.834265e-01 7.281907e-03 -1.811611e-01 -2.934590e-01 -8.809762e-03 9.999321e-01 -7.630442e-03 -3.116429e-02 1.810932e-01 9.099964e-03 9.834238e-01 1.604140e00
9.780772e-01 1.080196e-02 -2.079623e-01 -3.616512e-01 -1.279341e-02 9.998842e-01 -8.233354e-03 -3.933357e-02 2.078493e-01 1.071340e-02 9.781022e-01 1.788640e00
9.713483e-01 1.158386e-02 -2.373782e-01 -4.366243e-01 -1.400444e-02 9.998657e-01 -8.513365e-03 -4.313507e-02 2.372477e-01 1.159379e-02 9.713800e-01 1.979231e00
以上这篇Python读取txt某几列绘图的方法就是小编分享给大家的全部内容了希望能给大家一个参考也希望大家多多支持我们。
本文标题: Python读取txt某几列绘图的方法
本文地址: http://www.cppcns.com/jiaoben/python/241720.html
