MATLAB: Find index of a element present in matrix

matrix indexrow wise search

Hi…

I have a matrix A= [0 0 1 1; 1 0 0 1; 0 0 0 1]. I want to find the index of the first 1 of a row and want to save in a column matrix Z. In this case Z must be: Z=[ 3; 1; 4]. I am using this command Z = find(A(1,:), 1, 'first') but unable to do for second and third row. Kindly provide necessary codes for solving this.

Thank you.

Best Answer

[~,Z]=max(A,[],2)

Related Solutions

MATLAB: Element by Element Subtraction

Try this:

a= [1,2,3,4,5] 
b= [-1,-2,-3]
c = a' - b;
c = c(:)'

You get

c =
   2     3     4     5     6     3     4     5     6     7     4     5     6     7     8

in R2016b (I believe) or later that has automatic expansion capability.

MATLAB: Finding the index of a row with a maximum value

[junk, index] = max(Z(:,1));

Best Answer

Related Solutions

MATLAB: Element by Element Subtraction

MATLAB: Finding the index of a row with a maximum value

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