Help in shuffle test data ?

Hello ,

I need help in matlab , this sounds easy but i can not seem to find a solution , here is an example :

data = [1 0.1
        2 0.2
        3 0.3 
        4 0.4 
        5 0.5
        6 0.6 ]

i want to shuffle the test data , i mean the first line become the third line and the third line becoms the forth line for examle , but the order in the line remaind the same

Here is an example of how i want the data to become :

    data = [1 0.1
        6 0.6
        2 0.2
        5 0.5
        4 0.4
        3 0.3 ]

is there a matlab function that allows me to do that , and thanks in advance .

Answer 1

[Peng Li]

"he first line become the third line and the third line becoms the forth line"

your example doesn't meet what you described.

I guess you want do a random shuffling of data by rows.

newData = data(randperm(6), :)

newData =

    4.0000    0.4000
    1.0000    0.1000
    6.0000    0.6000
    5.0000    0.5000
    2.0000    0.2000
    3.0000    0.3000

[Redouane Bouchou]

exactly , that's what i wanted , thank you very mush , that was very helpfeul