How do ones and zeroes work in plotting a graph?

clc;
close all;
clear all;
t=-2:1:2;
y=[zeros(1,2),ones(1,1),zeros(1,2)]

y = 1×5

0 0 1 0 0

stem(t,y);

This code is to plot an impulse graph, I don't understand how "zeroes", "ones" work here , I know they are used to create a matrix with all elements as zeroes and ones respectively.

thanks!

Answer 1

[Walter Roberson]

y=[zeros(1,2),ones(1,1),zeros(1,2)]

y = 1×5

0 0 1 0 0

is just a way of writing

y = [[0, 0], [1], [0, 0]]

y = 1×5

0 0 1 0 0

which then becomes

y = [0, 0, 1, 0, 0]

y = 1×5

0 0 1 0 0

so it is just saying "two zeros, one one, two zeros".

Another way of writing would have been

t=-2:1:2;
y = zeros(size(t));
y(t == 0) = 1;
stem(t, y)

[RandomChikiBum]

Thank you Walter Roberson!, and Merry Christmas!!