User defined axis for unit impulse sequence

Hi,

I'm trying to solve a question that asks to create a function impseq (in function M-file), such that

function [x,n]=impseq(n0,n1,n2)

takes three parameters (n0, n1, n2) as input, where ‘n1’ and ‘n2’ are lower and upper limits of n-axis, and ‘n0’ is the delay, and generates a unit-impulse sequence using above mentioned three parameters. Finally, the question demands me to type “[x,n]=impseq(0,-5,5)” on the main window

So far, I've solved it as follows:

function [x,n] = impseq(n0,n1,n2)
n=-10:10;
x = @(n) (n == 0);
figure(2)
stem(n, x(n)), grid on
end

My question is that can i alter the n axis in a way such that it only plots the resulting graph upto its desired limits? Because even if I change the limits from n1= -5 to n2= 5, the n axis of the graph still ranges from -10 to 10.

[Muhammad Sanwal]

Isn't there any other way? Can we define the n axis in terms of n1 and n2?

[Alan Stevens]

Yes, you could do:

n = n1:n2;

or:

axis([n1 n2 0 1])

[Muhammad Sanwal]

It worked. Thankyou!

Answer 1

[Alan Stevens]

Just add:

axis([-5 5 0 1])

after the stem function line.