Sum of certain value in a matrix

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I have a 241 x 340 matrix that contains only 1 and 0 value scattered over the matrix. My question is how can I calculate the sum value of 1 in the matrix? Thank You in advance. for example
A = [0 0 0 0 1 1 1 1 0 0 1 1 1 0; 1 1 1 0 0 1 1 1 0 0 0 1 1 0]

Accepted Answer

Andrei Bobrov
Andrei Bobrov on 3 May 2017
out = sum(A(:))
  3 Comments
EMIRA SYAMIMI AHMAD SUBRI
and one more, if I want the average of it, so i just change 'sum' to 'mean' is it?

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More Answers (2)

KL
KL on 3 May 2017
Edited: KL on 3 May 2017
See Image Analyst's answer here
A = [0 0 0 0 1 1 1 1 0 0 1 1 1 0; 1 1 1 0 0 1 1 1 0 0 0 1 1 0]
edges = unique(A)
counts = histc(A(:), edges)

Aniruddha Katre
Aniruddha Katre on 3 May 2017

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