how to automate this manual code containing if else conditons?

i m creating a data based on values in variable seletion... if first value of selection is 1 it will pick data from Values cell 1 else if if contains 2 then from values cell 2... it works fine in this case but my data may change every time suppose now Selection = [1 1 1 2 2 2 3 3 3 3] and there are there sets of values or next time may b more or less.. how can i automate my code.. kindly guide..

Answer 1

[Stephen23]

S = [1 1 1 1 2 2 2 2 2 2];
V{1} = [20 10 40 50 40 30 20 10 20 30];
V{2} = [10 20 30 20 10 30 20 40 20 30];
M = vertcat(V{:});
Z = M(sub2ind(size(M),S,1:numel(S)))

Z = 1×10

20 10 40 50 10 30 20 40 20 30

Answer 2

[Les Beckham]

Here is one approach. I eliminated the extraneous parameter ini for this example.

I'm not sure I understand the role of the Time vector here. This may not do what you want if the sizes of Time and Selection are not the same.

Time = 1:10;
Selection = [1 1 1 1 2 2 2 2 2 2];
Values{1} = [20 10 40 50 40 30 20 10 20 30];
Values{2} = [10 20 30 20 10 30 20 40 20 30];
Final = zeros(size(Time));
uniqueValues = unique(Selection);
for ii = 1:numel(uniqueValues) %<<< handles any number of unique values in Selection
    Final(Selection == uniqueValues(ii)) = Values{ii}(Selection == uniqueValues(ii));
end
disp(Final)

    20    10    40    50    10    30    20    40    20    30

[taimour sadiq]

your Code is fine just one numeric mistake that why i was not getting the desired result.. now its works fine.. Thanks

Final(Selection == uniqueValues(ii)) = Values{1}(Selection == uniqueValues(ii));

should be

Final(Selection == uniqueValues(ii)) = Values{ii}(Selection == uniqueValues(ii));

[Les Beckham]

You are quite welcome. Good catch on that indexing error. I'll fix the answer.