使用while循环在MATLAB

Question

让我们考虑下面的代码

clear all; 
B=xlsread('data_generations1','A1','g8:g301'); 
% n=input('enter the number from 1 to 16 for windows in periodogram :'); 
fs=input('enter sampling frequency fs :'); 
while 1 
    n=input('enter the number from 1 to 16 for windows in periodogram :'); 
switch n 
    case 1 
     disp('this is hann window '); 
     [pxx,f]=periodogram(B,hann(length(B)),length(B),fs); 
     subplot(4,4,1); 
     plot(f,pxx); 
     hold on 
    case 2 
     disp('this is hamming window '); 
     [pxx,f]=periodogram(B,hamming(length(B)),length(B),fs); 
     subplot(4,4,2); 
     plot(f,pxx); 
     hold on 
    case 3 
     disp('this is kaiser window '); 
     [pxx,f]=periodogram(B,kaiser(length(B),2.5),length(B),fs); 
     subplot(4,4,3); 
     plot(f,pxx); 
     hold on 
    case 4 
     disp('this is barlett window '); 
     [pxx,f]=periodogram(B,bartlett(length(B)),length(B),fs); 
     subplot(4,4,4); 
     plot(f,pxx); 
     hold on 
    case 5 
     disp('this is bohmanwin window '); 
     [pxx,f]=periodogram(B,bohmanwin(length(B)),length(B),fs); 
     subplot(4,4,5); 
     plot(f,pxx); 
     hold on 
    case 6 
      [pxx,f]=periodogram(B,rectwin(length(B)),length(B),fs); 
     subplot(4,4,6); 
     plot(f,pxx); 
     hold on 

    case 7 
      [pxx,f]=periodogram(B,triang(length(B)),length(B),fs); 
     subplot(4,4,7); 
     plot(f,pxx); 
     hold on 

    case 8 
      [pxx,f]=periodogram(B,gausswin(length(B),2.5),length(B),fs); 
     subplot(4,4,8); 
     plot(f,pxx); 
     hold on 

    case 9 
      [pxx,f]=periodogram(B,flattopwin(length(B),'periodic'),length(B),fs); 
     subplot(4,4,9); 
     plot(f,pxx); 
     hold on 

    case 10 
      [pxx,f]=periodogram(B,gausswin(length(B),2.5),length(B),fs); 
     subplot(4,4,10); 
     plot(f,pxx); 
     hold on 

    case 11 
     [pxx,f]=periodogram(B,tukeywin(length(B),0.5),length(B),fs); 
     subplot(4,4,11); 
     plot(f,pxx); 
     hold on 
    case 12 
     [pxx,f]=periodogram(B,taylorwin(length(B)),length(B),fs); 
     subplot(4,4,12); 
     plot(f,pxx); 
     hold on 
    case 13 
     [pxx,f]=periodogram(B,barthannwin(length(B)),length(B),fs); 
     subplot(4,4,13); 
     plot(f,pxx); 
     hold on 
      case 14 
      [pxx,f]=periodogram(B,parzenwin(length(B)),length(B),fs); 
     subplot(4,4,14); 
     plot(f,pxx); 
     hold on 
    case 15 
     [pxx,f]=periodogram(B,nuttalwin(length(B),'periodic'),length(B),fs); 
     subplot(4,4,15); 
     plot(f,pxx); 
     hold on 

    case 16 
     [pxx,f]=periodogram(B,nuttalwin(length(B),'periodic'),length(B),fs); 
     subplot(4,4,15); 
     plot(f,pxx); 
     hold on 
     otherwise 
     warning('Unexpected number typed. No windows is used '); 
end 
       break; 
end 

我的目标是，使用循环我想在每一步，从1到输入一些号码16，并使用周期图与几个功率谱密度的subpplot不同的窗口，但是当我运行，它只显示我只绘制一次，这意味着例如，如果我输入数字1，它显示我韩窗然后停止，我怎么可以使循环通过每一步，并在同一时间保持之前绘制的图？提前致谢

Answer 1

删除break呼叫。 break的全部要点是尽早退出循环。由于您不想提前退出，请不要拨打break。