Writing my own function to find one-norm

1 view (last 30 days)
Emily Gallagher
Emily Gallagher on 15 Oct 2019
Answered: Jalaj Gambhir on 18 Oct 2019
I am trying to write a function called normone that accepts a rectangular matric as a parameter and calculates the one-norm. I know this can be done by norm(A,1) but I am trying to write my own function. Below is my code but it is not giving me the correct answer.
function f = normone
seed = 7;
rng(seed)
A = rand(n,n);
f = norm(A, 1);
end

Answers (1)

Jalaj Gambhir
Jalaj Gambhir on 18 Oct 2019
Hi,
If you want the function to accept the matrix as a parameter, you need:
function f = normone(A)
f = norm(A,1);
end
You can call this function by:
>> A = rand(3)
A =
0.4149 0.7094 0.9555
0.0014 0.5243 0.6829
0.0923 0.6962 0.0531
>> normone(A)
ans =
1.9299
Other alternative to write a function similar to what you mentioned in the question is:
function f = normone(n)
seed = 7;
rng(seed);
A = rand(n,n);
f = norm(A,1);
end
which can be called using:
>> normone(4)
ans =
2.2513

Categories

Find more on Linear Algebra in Help Center and File Exchange

Tags

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by