清空筛选条件
清空筛选条件

When I run my code, I keep getting this error: Unable to convert expression into double array."

1 次查看（过去 30 天）
Pablo Álvarez García
回答： Benjamin Thompson 2022-2-14
clear all
close all
syms z w
Gz=z/(z-1);
Gjw=subs(Gz,z,exp(j*w));
figure(1)
subplot(2,1,1)
stem(real(Gjw))
xlabel('frec (Hz)')
ylabel('MÓDULO')
stem(imag(Gjw)) %grafica la parte imag
subplot(2,1,2)
xlabel('frec (Hz)')
ylabel('ARGUMENTO')
sgtitle('G(jw)')

请先登录，再回答此问题。

回答（1 个）

Benjamin Thompson
Benjamin Thompson 2022-2-14
You should use i for the imaginary number, instead of j. In your subs command you have not defined what w is.
>> Gjw
Gjw =
exp(w*1i)/(exp(w*1i) - 1)
>> Gjw=subs(Gz,z,exp(i*w));
>> Gjw=subs(w, 2);
>> stem(real(Gjw))
Now there should be no error

类别

在 Help Center 和 File Exchange 中查找有关 Number Theory 的更多信息

标签

产品

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by