Loop through a matrix with multiple elements with the same values

Based on this answer given by Cedriv Wannaz, I would like to ask how to generalize the answer. I mean that I know than in the column exist multiple values but I do not know how many they are, but I want to extract the entries as shown in the answer. How do I iterate through the values in order to succeed that?

Answer 1

[Stephen23]

The basic steps will be to:

1. find how many values there are.
2. repeat that code for each variable.

It seems that you are wanting each unique values in the first column of that matrix, in which case you can use unique to get a vector of the unique values:

V = unique(data(:,1));

Then loop over them using a for loop:

for k = numel(V):-1:1
    V(k) % value of that loop iteration
    ... do whatever code with that value
    out{k} = ... % save the results
end

Exactly how you save the results (or if they are saved at all) depends on you and what post-processing you want to perform. As you have not told us anything about the post-processing of this data after this step it is difficult to advise on the best way to store the output data.