User defined axis for unit impulse sequence

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Muhammad Sanwal 2020-7-31

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评论： Muhammad Sanwal 2020-8-1

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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.