Why is my graph coming out blank when i try and plot this code?

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Christopher Saenz
Christopher Saenz on 23 Feb 2019
Answered: Star Strider on 23 Feb 2019
x=[0.1:0.1:5];
y=(sin(x))/x;
figure(2)
grid on
plot(x,y)

Answers (2)

Brian Hart
Brian Hart on 23 Feb 2019
It's an error in your calcuation of y. Check the size and you'll see it's coming out as a scalar. Replace "/" with "./", since you want element-wise division.

Star Strider
Star Strider on 23 Feb 2019
Because you are calculating a single point.
If you use element-wise division here (using ./ rather than /), you get the plot you expect:
x=[0.1:0.1:5];
y=(sin(x))./x;
figure(2)
grid on
plot(x,y)
See the documentation on Array vs. Matrix Operations (link) for an extended discussion.

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