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Matlab AND operation concerning intervals

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Aaron Friedman
Aaron Friedman 2016-4-2
评论： Aaron Friedman 2016-4-3
I am trying to create a simple signal with the following code:
function s = r_tri(t)
if ((t >= 0) & (t <= 3))
s = (-2/3)*t + 2;
else
s = 0;
end
Every time I try and plot this I get a blank graph. I assigned t = -1: 0.01: 4; I used the following plot command:
plot (t, r_tri(t))
I also tried this on the command line, and I keep getting 0. Why is this happening? Can you suggest a better way to accomplish this? Thanks.

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采纳的回答

Walter Roberson
Walter Roberson 2016-4-2
function s = r_tri(t)
s = zeros(size(t));
mask = (t >= 0) & (t <= 3);
s(mask) = (-2/3)*t(mask) + 2;

更多回答（1 个）

Azzi Abdelmalek
Azzi Abdelmalek 2016-4-2
t = -1: 0.01: 4;
s=zeros(size(t))
idx=t>=0 & t<=3;
s(idx)=(-2/3)*t(idx) + 2;
plot(t,s)

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