MATLAB: Create a matrix based on a row distribution

Question

Hello,

Please help me with the following.

Consider a 100×10 matrix A and a 15×10 matrix B.

We also have a distribution i=1,2,…,15 of the rows of A.

For example,

A=[row1;row2;…;row100];

The distribution of the 15 values is random:

distr=[6;14;…;2];

The distr vector is 100×1.

How can we replace the corresponding rows of B to A, based on the distribution?

The new matrix A, called A_new, is also 100×10 and should like this:

A_new=[B(6,:);B(14,:);…;B(2,:)];

The A_new rows are the corresponding rows of B based on the distribution.

Thank you very much.

Best,

Pavlos

Answer 1

 A_new = B(distr,:);