HOW TO SELECT ELEMENTS FROM DIFFERENT MATRIX

Hello every one an trying to select elements from three different matrices which is stored in a template but the output is not correct. Following is my requirment.

harmony.Sol %template consisting of three 1x6 matrices as shown below:

[1 2 3 4 5 6]

[7 8 9 1 2 3]

[ 4 5 6 7 8 9]

i need to select random elements from above three matrices and create a new 1x6 matrix. probably named harmony.new. Ex: ans= [7 5 3 1 5 9]

Please help me on this, my codes are not giving the correct output. Thank u...

[Walter Roberson]

If harmony.Sol is three 1 x 6 matrices, are they stored as a cell array, or is harmony a non-scalar structure with the three arrays being harmony(1).Sol, harmony(2).Sol, harmony(3).Sol ?

Is it correct that the rule is that each element must be chosen from one of the three elements in the corresponding positions of the Sol arrays?

[PRANAY DISHAN]

yes sir,

harmony(1).Sol gives [1 2 3 4 5 6]

harmony(2).Sol gives [7 8 9 1 2 3]

harmony(3).Sol gives [ 4 5 6 7 8 9]

and i have to create new 1x6 matrix from them probably named harmony.new. Ex: ans= [7 5 3 1 5 9] (which is randomly chosen from harmony.Sol)

[Walter Roberson]

If harmony is a non-scalar structure, then which entry in harmony should get the new value? It is not possible to have a structure which is non-scalar with respect to some fields but scalar with respect to other fields.

Answer 1

[Walter Roberson]

val = vertcat(harmony.Sol);
nchoice = size(val,1);
ncol = size(val,2);
ridx = randi(nchoice, 1, ncol);
harmony(173).new = val((0:ncol-1)*nchoice + ridx);

[PRANAY DISHAN]

Thank you sir. It was very helpful.