Help with stem discrete signal plot

Hey I want to dis play my signal which has values from n=[0,101] only from n=[0,50] but when i try it tells me x must be the same length as y here is my code.

clc; close all;

z = conv(x,h);

figure(2)

stem(0:1:51, y, 'r -');

hold on

stem(0:1:101, z, 'bo ')

xlabel('n');

ylabel('z[n]');

title('z[n] vs y[n]');

legend('y[n]','z[n]')

Answer 1

[Elizabeth Reese]

If y has values from n=[0,101], then in order for the two inputs of stem to be the same length, you can say

 stem(0:50, y(1:51), 'r-')

This includes the first 51 values of y that are for n=[0,50].