28637634
2008-05-10, 11:55
现在做的一个仿真已经输出了一个波形图，已经用To File的方法导出。我的目的是用FFT的方法获取它的频谱，方法如下，出现的这个错误如何解决？
>> load ia
>> x=ia
x =
time: []
signals: [1x1 struct]
blockName: 'gz_modified_by_wpn/To Workspace'
>> y=fft(x,1024)
??? Error using ==> fft
Function 'fft' is not defined for values of class 'struct'.
>>
>> load ia
>> x=ia
x =
time: []
signals: [1x1 struct]
blockName: 'gz_modified_by_wpn/To Workspace'
>> y=fft(x,1024)
??? Error using ==> fft
Function 'fft' is not defined for values of class 'struct'.
>>