## Getting introduced to Matlab

August 17, 2016 Leave a comment

There was a time when I thought *Matlab *is a tool used by engineers. Is it even possible for a student of humanities to get access to such tools ? It is and there are academic licenses.

##### Matrix

matrix = zeros(10,10); matrix(1,2) = 3 matrix(2,2) = 30 matrix(1,3) = 2 matrix(4,3) = 14 matrix(5,2) = 199 matrix(6,2) = 733

##### Maximum value from a matrix

[max_value, node] = max(matrix(:)); fprintf ('Maximum value is %d and node is %d\n', max_value, node);

**node **seems to be a reference to the element which is used below to get the row and column using **ind2sub.**

[i, j] = ind2sub(size(matrix), node); fprintf ('Row is %d and column is %d\n', i, j);

**sub2ind **gives the linear indice of the element when we have the row and column of the element.

linearindice = sub2ind(size(matrix), 1, 2); fprintf ('Linear Indice is %d \n', linearindice);

##### Sort

I get the sorted matrix and also the matrix of indices of the sorted elements. Very useful.

[values, indices] = sort( matrix );