python处理csv数据动态显示曲线实例代码

2023-09-17 12:11:07 51

#-*-coding:utf-8-*- """ SpyderEditor Thistemporaryscriptfileislocatedhere: C:\Users\user\.spyder2\.temp.py """ """ Showhowtomodifythecoordinateformattertoreporttheimage"z" valueofthenearestpixelgivenxandy """ #coding:utf-8 importtime importstring importos importmath importpylab importnumpyasnp fromnumpyimportgenfromtxt importmatplotlib importmatplotlibasmpl frommatplotlib.colorsimportLogNorm frommatplotlib.mlabimportbivariate_normal importmatplotlib.pyplotasplt importmatplotlib.cmascm importmatplotlib.animationasanimation metric=genfromtxt('D:\export.csv',delimiter=',') lines=len(metric) #printlen(metric) #printlen(metric[4]) #printmetric[4] rowdatas=metric[:,0] forindexinrange(len(metric[4])-1): a=metric[:,index+1] rowdatas=np.row_stack((rowdatas,a)) #printlen(rowdatas) #printlen(rowdatas[4]) #printrowdatas[4] # #plt.figure(figsize=(38,38),dpi=80) #plt.plot(rowdatas[4]) #plt.xlabel('time') #plt.ylabel('value') #plt.title("USBHIDdataanalysis") #plt.show() linenum=1 ##如果是参数是list,则默认每次取list中的一个元素,即metric[0],metric[1],... listdata=rowdatas.tolist() printlistdata[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='DataROW=%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) defupdate(data): globallinenum line.set_ydata(data) #print'thisisline:%d'%linenum time_text.set_text(time_template%(linenum)) linenum=linenum+1 #nextitem=input(u'输入任意字符继续:') returnline, definit(): #ax.set_ylim(0,1.1) #ax.set_xlim(0,10) #line.set_data(xdata) plt.xlabel('time') plt.ylabel('Time') plt.title('USBHIDDataanalysis') returnline, ani=animation.FuncAnimation(fig,update,listdata,interval=1*1000,init_func=init,repeat=False) plt.show()

python处理csv数据动态显示曲线实例代码

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