how to make a loop for condition?

how to make this more efficient? i've done clustering, so i want to separate them based on their cluster, so i made like this, but if i change the r so the number of their cluster will change, so i want to they loop based on their number of the cluster, i've tried use for, but i didn't found out how to make loop for condition like this

ind1 = idx == 1;
ind2 = idx == 2;
ind3 = idx == 3;
ind4 = idx == 4;
ind5 = idx == 5;
ind6 = idx == 6;

C1_k = datareal(ind1,:);
C2_k = datareal(ind2,:);
C3_k = datareal(ind3,:);
C4_k = datareal(ind4,:);
C5_k = datareal(ind5,:);
C6_k = datareal(ind6,:);

[Stephen23]

"...i didn't found out how to make loop for condition like this"

Meta-data in variable names indicates that you are doing something wrong.

Copy-and-pasting code like that indicates that you are doing something wrong.

The neat, simple, efficient MATLAB approach is to use indexing with one array.

Answer 1

[KSSV]

G = 6 ;   % number of cluster 
ind = cell(G,1) ; 
C = cell(G,1) ; 
for i = 1:G
    ind{i} = idx == i;
    C{i} = dataarea1(idx==i,:) ; 
end

[Fabyola]

aah i see, okaay thanks a lot for your help