How to combine two matrix and extract value from one matrix to another matrix in same position?

Repeated values in a matrix are assigned to a group and now the elements in group has to be matched with another matrix having probability values of element in group.

For example

a=[6 6 5 6 5 6 6]

group 1 =5

3 5

group 2 = 6

1 2 4 6 7

b = [0.74 0.66 0.58 0.47 0.62 0.75 0.76]

Expecting output:

group 1 = 5

0.58 0.62

group 2 = 6

0.74 0.66 0.47 0.75 0.76

Thank you in advance

Answer 1

[Voss]

a = [6 6 5 6 5 6 6];
b = [0.74  0.66  0.58  0.47  0.62  0.75  0.76];

group_1 = 5;
group_2 = 6;

b(a == group_1)

ans = 1×2

0.5800 0.6200

b(a == group_2)

ans = 1×5

0.7400 0.6600 0.4700 0.7500 0.7600

% Expecting output:
% group 1 = 5
%    0.58  0.62
% group 2 = 6
%    0.74  0.66  0.47  0.75  0.76

[ASHA PON]

Thank you very much for the reply. Actually i just discussed the smaller version of my problem. I need to apply the above mentioned problem to a larger number of group and n*m matrix. Kindly suggest me the procedure to apply for larger matrix.