how to partitioning the matrix in form of test data or training data in matlab????

Y3 = [6 3 11 7 8 5 1 2 4 9 10;11 5 6 3 10 8 7 4 2 9 1] if we want to take 3 & 6 training data set or others are test data set

[Walter Roberson]

Duplicates http://uk.mathworks.com/matlabcentral/answers/246161-how-to-partition-a-row-vector-of-random-variable

[prema13]

i can not understand....please explain in details