Graph missing with zero errors

I've been trying to make a graph but it comes out blank when I run it. The code does not have an issue.

Answer 1

[Steven Lord]

How long is your t vector?

L = 0.01;
Rth = 8000;
Thao = L/Rth

Thao = 1.2500e-06

delta = Thao/(1*10^-6)

delta = 1.2500

t = 0:delta:5*Thao

t = 0

Since taking one step of length delta from the starting point (0) takes you past the endpoint of the colon operation (5*Thao) the vector t only has one element. So you're only plotting one point and you're plotting without a marker. What happens if we plot it with a marker?

If = 5/2000;
I = If*exp(-t/Thao);
plot(t, I, 'ro')