我一直收到此错误消息无法执行赋值，因为类型 'tf' 的值无法转换为 'cell'？

Question

        num = [1];
dem = [1 1 0 0];
T=[0.1,0.5,2,3,4,20];
ind='A,B,C,D,E,F'
index=strsplit(ind,',')

for i=1:length(T)
    for j=1:length(index)
        index(j)= tf(num ,dem,'Inputdelay',T(i));  %% error is here 
    end
    for plotId = 1 : 6
        subplot(3,2,plotId), bode(index(j))
        grid on;
        title(['delay=',num2str(T(plotId))])
    end
end

Blockquote problem is that i could not using index i heard about somthing call eval but i've got no idea

Answer 1

ft 返回的结果有很多属性，您必须指定您需要的属性：

for j=1:length(T)
        results= tf(num ,dem,'Inputdelay',T(i));  
        index(j).num =results.num; 
        index(j).den =results.den;
        index(j).Variable =results.Variable; 
        index(j).ioDelay =results.ioDelay; 
        index(j).InputDelay =results.InputDelay; 
        index(j).OutputDelay =results.OutputDelay; 
        index(j).Ts =results.Ts; 
        index(j).TimeUnit =results.TimeUnit; 
        index(j).InputUnit =results.InputUnit; 
        index(j).InputName =results.InputName; 
        index(j).InputGroup =results.InputGroup; 
        index(j).OutputName =results.OutputName; 
        index(j).OutputUnit =results.OutputUnit; 
        index(j).OutputGroup =results.OutputGroup; 
        index(j).Name =results.Name; 
        index(j).Notes =results.Notes; 
        index(j).UserData =results.UserData; 
        index(j).SamplingGrid =results.SamplingGrid;
    end

Answer 2

我对 TensorFlow 了解不多，这确实是你问的问题，但你得到 error 的原因是变量的类型 index 变成 'cell array' 当你使用 strsplit:

ind='A,B,C,D,E,F'
index=strsplit(ind,',')

ind =

    'A,B,C,D,E,F'


index =

  1×6 cell array

    {'A'}    {'B'}    {'C'}    {'D'}    {'E'}    {'F'}

因此，当您尝试 index(j) = tf(...) 时，您是在尝试将不是单元格的类型放入是单元格的变量中。 Matlab 不允许您这样做。有关元胞数组的更多信息：https://au.mathworks.com/help/matlab/ref/cell.html.

我一直收到此错误消息无法执行赋值，因为类型 'tf' 的值无法转换为 'cell'？

I keep get this error message Unable to perform assignment because value of type 'tf' is not convertible to 'cell'?

matlab

matlab-figure