Input conditional sine wave

2017 4 24
1 个回答
回答已采纳
更新时间：2017 4 25
6 次查看（30 天）

0 个投票

Hi, I am trying to input a signal which is a sine wave between 3 and 7 seconds and zero everywhere else. I am trying to create an 'for loop' to do this by indexing the time vector but I can't make it work, the graph just displays nothing (assuming matlab thinks x = 0 for all time?)...is there anything I've missed?
t = [0:0.1:10];
for k=1:length(t)
if t(k)>=3 && t(k)<=7
x = 5*sin(4*pi *t);
else
x = 0;
end
end
plot(t,x)
Any help would be greatly appreciated :)

请先登录，再回答此问题。

 采纳的回答

KSSV
KSSV 2017-4-25

1 个投票

t = 0:0.1:10;
x = 5*sin(4*pi *t);
x(t<3) = 0 ;
x(t>7) = 0 ;
plot(t,x)

更多回答（0 个）

类别

在 帮助中心 和 File Exchange 中查找有关 Loops and Conditional Statements 的更多信息

标签

Community Treasure Hunt

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

Start Hunting!

Translated by