Error using stem X must be same length as Y.

Im plotting a Discrete time signal at matlab and im getting this error "Error using stem

X must be same length as Y."

close all;

clear all;

clc;

clf;

AM = 19390128

Sum = mod(AM,9)

n1 = -2:1:4;

s1 = size(n1);

x1 = Sum*ones(s1);

n2 = 4:1:10;

x2 = 0;

n3 = 10:1:20;

s3 = size(n3);

i = n3 + n3;

x3 = sqrt(i);

n = [n1,n2,n3];

x = [x1,x2,x3];

stem(n,x,)

grid

Could you help me maybe and tell me what's wrong?

Answer 1

[cr]

The lengths of x and n are different, 19 and 25. Plotting requires them to be equal.

I think you want to do

x2 = zeros(size(n2));

rather than x2 = 0;

[ANGELOS-VASILEIOS MANTZOUKAS]

yep it worked, thank you