CODEWITHSUNDEEP
matlab
Ahmed Nabil
Ahmed Nabil

Reputation: 41

Matlab_max value in each col

I have this matrix

v=[4,-2,1;-2,1,-1;-2,3,6]

How can i return the max value of specific col with its row index ? Knowing that i used this function :

[amax,rowIdx]=max(abs(v(k:n,k)),[],1)

but it doesn't work well

here is my code :

v=[4,-2,1;-2,1,-1;-2,3,6]
n=3;
for k=1:n-1
   [amax,rowIdx]=max(abs(v(k:n,k)),[],1)
end

Upvotes: 0

Views: 28

Answers (1)

serycjon
serycjon

Reputation: 540

If I understand your question correctly, you want to get maximum of third column?

[max_val, max_idx] = max(v(:, 3));

you select the third column from the matrix -> that gives you a single vector. max then operates on this vector and returns the max value together with its position, which is the row index in the original matrix.

Upvotes: 1

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