定制界面读取 txt 文件并且绘图（python）

摘要：本文主要使用tkinter定制GUI，读取txt文件，使用matplotlib绘图。

00 导入所需库

import os
import numpy as np
import matplotlib as mpl
mpl.rcParams['font.sans-serif'] = ['SimHei']
mpl.rcParams['font.serif'] = ['SimHei']
mpl.rcParams['axes.unicode_minus'] = False
import matplotlib.pyplot as plt
from tkinter import *
from tkinter import filedialog
###

01 定制GUI

def readtxt():
    global ftype
    ftype=filedialog.askopenfilename(title='打开 *.txt',filetypes=[('LE-100','*.txt')])
win=Tk()
win.title('技术邻')
b1=Button(win,text='txt数据',relief='raised',font='宋体 20 bold',width=15,command=readtxt)
b1.pack(padx=50,pady=10,side='left')
b2=Button(win,text='分析',relief='raised',font='宋体 20 bold',width=15,
          foreground='purple',background='lightgray',command=win.destroy)
b2.pack(padx=50,pady=20,side='left')
win.mainloop()
###

02 读取txt文件

f_name=ftype.split('/')
f_dir='/'.join(f_name[0:-1])
os.chdir(f_dir)
fgs=f_name[-1].split('.')
if fgs[-1]=='txt':
    with open(ftype,'r') as f:
        vib=f.read()
    vib_list=vib.split()
    vib_z=vib_list[3::3]
    vib_z=[int(x) for x in vib_z]
    vib_y=vib_list[4::3]
    vib_y=[int(x) for x in vib_y]
    vib_x=vib_list[5::3]
    vib_x=[int(x) for x in vib_x]
    fs=250
    xt=np.linspace(1/fs,len(vib_z)/fs,len(vib_z))
    xt=xt.tolist()
    xt=[format(x,'.3f') for x in xt]
    xt=[float(x) for x in xt]

03 绘图

fig,ax=plt.subplots(3,1,sharex='all')
    fig.set_size_inches(11.69,8.27)
    fig.set_dpi(200)
    fig.subplots_adjust(hspace=0)
    ax1=ax[0]
    ax1.plot(xt,vib_x)
    ax1.set_ylabel('X方向振动')
    ax1.set_title('LE-100测试数据')
    ax1.grid(axis='both')
    ax2=ax[1]
    ax2.plot(xt,vib_y,linewidth=0.5)
    ax2.set_ylabel('Y方向振动')
    ax2.grid(axis='both')
    ax3=ax[2]
    ax3.plot(xt,vib_z,color='blue')
    ax3.set_ylabel('Z方向振动')
    ax3.set_xlabel('时间')
    ax3.grid(axis='both')
    fig.savefig(f_name[-1]+'.jpg')
    fig.show()