Is there a function that, once introduced any matrix, counts how many 0's there are, how many elements between 0 and 1, and how many are bigger than 1 in said matrix? Thanks!

 Réponse acceptée

Kelly Kearney
Kelly Kearney le 9 Jan 2014
x = rand(100);
n0 = sum(x(:) == 0);
n0to1 = sum(x(:) > 0 & x(:) <= 1);
ngt1 = sum(x(:) > 1);

Plus de réponses (1)

Matt J
Matt J le 9 Jan 2014
Modifié(e) : Matt J le 9 Jan 2014
You can do
nnz(A>1)
or
sum(A(:)>1)
and similarly for other logical conditions. In some cases, nnz will be the fastest option for sparse matrices. Otherwise, sum() is usually the fastest.

Catégories

En savoir plus sur Sparse Matrices dans Centre d'aide et File Exchange

Community Treasure Hunt

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

Start Hunting!

Translated by