How to merge two matrix?

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

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.

Thank you in advance

Answer 1

[KSSV]

a=[6 6 5 6 5 6 6] ; 
b = [0.74  0.66  0.58  0.47  0.62  0.75  0.76] ;
[c,ia,ib] = unique(a) ;
N = length(c) ; 
G = cell(N,1) ; 
iwant = cell(N,1) ; 
for i = 1:N
    G{i} = a(ib==i)
    iwant{i} = b(ib==i)
end

G = 2×1 cell array
    {[     5 5]}
    {0×0 double}

iwant = 2×1 cell array
    {[0.5800 0.6200]}
    {0×0 double     }

G = 2×1 cell array
    {[      5 5]}
    {[6 6 6 6 6]}

iwant = 2×1 cell array
    {[                     0.5800 0.6200]}
    {[0.7400 0.6600 0.4700 0.7500 0.7600]}

celldisp(G)

 
G{1} =
 
     5     5

 
 
G{2} =
 
     6     6     6     6     6

 

celldisp(iwant)

 
iwant{1} =
 
    0.5800    0.6200

 
 
iwant{2} =
 
    0.7400    0.6600    0.4700    0.7500    0.7600

 

[ASHA PON]

Thank you so much for your reply. This is what i needed.