MATLAB: Selecting values randomly from dataset

random

I have a data of 100*60 ,i want to select 3 rows randomly please help

Best Answer

IDX = randperm(size(X,1));
RandomRows = X(IDX(1:3),:);

Related Solutions

MATLAB: How to select random rows from a matrix and delete it from the original matrix for another random selection.

A=rand(100); % a random matrix
n=10;. 
idx=randsample(1:size(A,1),n) ;
B = A(idx,:) ; % pick rows randomly 
A(idx,:)=[]; % remove those rows
idx = randsample(1:size(A,1),n) ;
C= A(idx,:);

MATLAB: Edit-selecting random values

EDIT [09:13(UTC+4) 13.01.2012]

A = randi(48,10)
s = size(A);
n = [3 10];
q = reshape(1:numel(A),s(1),[]);
rc = s - n + 1;
m = q(1:rc(1),1:rc(2));
I = randperm(numel(m));
p = m(I(1));
out = A(rem(p-1,s(1))+(1:n(1)),ceil(p/s(1))+(0:n(2)-1))

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