Number of zeros in a matrix
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I need to create a function where I have a matrix and the function returns the number of zeros in that matrix. I need to do this using the if condition.
Then write in a .txt file which columns had more than 12 zeros.
Can someone help me out with this?
Thank you very much.
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Risposta accettata
Matt Fig
il 17 Nov 2012
Modificato: Matt Fig
il 17 Nov 2012
The number of zeros in the matrix A is:
sum(~A(:))
So we can make this a function:
f = @(x) sum(~x(:));
Now test it:
x = [1 2 3;0 0 0;3 0 9]
f(x)
5 Commenti
Matt Fig
il 18 Nov 2012
M = [1 0 1 1;1 1 1 0]
fid = fopen('mytext.txt','wt')
fprintf(fid,'%i ',find(sum(~M) >= 1))
fclose(fid)
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