What is the most efficient way to create a logical index from values in a matrix?

I have a vector of values that I want to be 1s in a logical vector of a given size. Is there any way to do this in one line of code?

Here is how I am currently doing it:

%given information
given_size = 15;
chosen_values = [2 4 5 10];
%get index - can this be done in one line?
chosen_cells_index = false(1,given_size);
chosen_cells_index(chosen_values) = 1;

Answer 1

[Star Strider]

I use three lines here for the complete illustration. If you have already assigned the first two lines, the third is all that is necessary.

Example —

v = randi(15, 1, 20);
chosen_values = [2 4 5 10];
chosen_cells_index = ismember(v, chosen_values)

The ‘chosen_cells_index’ vector will be what you want.