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本文研究的主要是python處理csv數(shù)據(jù)動(dòng)態(tài)顯示曲線,分享了實(shí)現(xiàn)代碼,具體如下。
代碼:
# -*- coding: utf-8 -*- """ Spyder Editor This temporary script file is located here: C:\Users\user\.spyder2\.temp.py """ """ Show how to modify the coordinate formatter to report the image "z" value of the nearest pixel given x and y """ # coding: utf-8 import time import string import os import math import pylab import numpy as np from numpy import genfromtxt import matplotlib import matplotlib as mpl from matplotlib.colors import LogNorm from matplotlib.mlab import bivariate_normal import matplotlib.pyplot as plt import matplotlib.cm as cm import matplotlib.animation as animation metric = genfromtxt('D:\export.csv', delimiter=',') lines=len(metric) #print len(metric) #print len(metric[4]) #print metric[4] rowdatas=metric[:,0] for index in range(len(metric[4])-1): a=metric[:,index+1] rowdatas=np.row_stack((rowdatas,a)) #print len(rowdatas) #print len(rowdatas[4]) #print rowdatas[4] # #plt.figure(figsize=(38,38), dpi=80) #plt.plot(rowdatas[4] ) #plt.xlabel('time') #plt.ylabel('value') #plt.title("USBHID data analysis") #plt.show() linenum=1 ##如果是參數(shù)是list,則默認(rèn)每次取list中的一個(gè)元素,即metric[0],metric[1],... listdata=rowdatas.tolist() print listdata[4] #fig = plt.figure() #window = fig.add_subplot(111) #line, = window.plot(listdata[4] ) fig, ax = plt.subplots() line, = ax.plot(listdata[4],lw=2) ax.grid() time_template = 'Data ROW = %d' time_text = ax.text(0.05, 0.9, '', transform=ax.transAxes) #ax = plt.axes(xlim=(0, 700), ylim=(0, 255)) #line, = ax.plot([], [], lw=2) def update(data): global linenum line.set_ydata(data) # print 'this is line: %d'%linenum time_text.set_text(time_template % (linenum)) linenum=linenum+1 # nextitem = input(u'輸入任意字符繼續(xù): ') return line, def init(): # ax.set_ylim(0, 1.1) # ax.set_xlim(0, 10) # line.set_data(xdata) plt.xlabel('time') plt.ylabel('Time') plt.title('USBHID Data analysis') return line, ani = animation.FuncAnimation(fig, update,listdata , interval=1*1000,init_func=init,repeat=False) plt.show()
總結(jié)
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