Random order of rows Matlab

Solution 1:

To shuffle the rows of a matrix, you can use RANDPERM

shuffledArray = orderedArray(randperm(size(orderedArray,1)),:);

randperm will generate a list of N random values and sort them, returning the second output of sort as result.

Solution 2:

This can be done by creating a new random index for the matrix rows via Matlab's randsample function.

matrix=matrix(randsample(1:length(matrix),length(matrix)),:);

Solution 3:

While reading the answer of Jonas I found it little bit tough to read, tough to understand. In Mathworks I found a similar question where the answer is more readable, easier to understand. Taking idea from Mathworks I have written a function:

function ret = shuffleRow(mat)

[r c] = size(mat);
shuffledRow = randperm(r);
ret = mat(shuffledRow, :);

Actually it does the same thing as Jonas' answer. But I think it is little bit more readable, easier to understand.