Replace elements in vector by keeping specific positions

Hello,

I have two vectors that I would like to plot together but with different colours :

vector_1 = [1 3 5 6 8 10]

vector_2 = [2 4 7 11]

I make a vector that combines these two and I sort it in ascending order because for me this matters (for when I will plot them)

vector_combined = [vector_1 vector_2];

sorted_vector_combined = sort(vector_combined);

then I want to plot one vector in one color and another one in another color and superimpose them to see which points of which vector come before/after, so I do:

tup = ismember(sorted_vector_combined, vector_1),

and I get

tup = [1 0 1 0 1 1 0 1 1 0]

Now I want to preserve this structure with 1 and 0 because when I plot them I want to superimpose vector_2 in the 0 of vector_1 so then I do:

for k= 1:length(sorted_vector_combined)

    if tup(k) == 1;

        tup(k)= sorted_vector_combined(k);

    else tup(k)== 0

    end
end

However --> I get this:

ans =

     1

ans =

     1

ans =

     1

ans =

     1

and tup is still: [1 0 1 0 1 1 0 1 1 0]

why doesn't my code replace the elements '1' of tup with elements of sorted_vector-combined in the same position?

Thank you!!

Answer 1

[Andrei Bobrov]

tup.*sorted_vector_combined