How to make a stem graph to display less points?

Dear All,

The following code produces the following graphs.

Of course, I do not need the part of the second graph before the point -3. How to cut this part?

[Sergei]

Though, if I do not open the figure in full-screen, there is no problem.

[Walter Roberson]

It is much better to post code as text instead of a picture of code. None of us have a version of MATLAB that is able to run code from pictures.

Answer 1

[Image Analyst]

Use axis

% Make t axis go from -3 to the maximum.
axis([-3, max(t)]);

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[Sergei]

The revised code looks like this:

clear all; clc; close all;
%How much elements of x[n] we print (must be not even)
N = 11;
t = (-(N-1)/2:(N-1)/2);
x = zeros(1, N);
%Index of x[0] in x
zero = (N-1)/2+1;

x(zero-2) = 1; x(zero-1) = 2; x(zero) = 3; x(zero+1) = -1; x(zero+2) = 4; x(zero+3) = -2;
%(a)
figure; subplot(2, 5, 1); 
stem(t, x, LineWidth=2); title('x[n]');xticks(min(t):max(t)); grid on; axis([min(t), max(t), -3, 5]);
subplot(2, 5, 2);
stem(t+2, x, LineWidth=2); title("x[n-2]"); axis([min(t+2), max(t+2), -3, 5]); xticks(min(t+2):max(t+2)); grid on;

What helped is writing "axis([min(t+2), max(t+2), -3, 5])" instead of "axis([min(t+2), max(t+2)])", because axis command takes 4, 6 or 8 valued vector as an input only

Still thank you, that you pointed at this command and helped me solving the problem!