How do I create a random matrix of numbers with 2 unique positions?

I'm trying to create a game in MatLab for class project, one of my goals is to use a matrix to create a map, so I need to be able to generate an matrix of numbers that has 2 unique points, either fixed, or randomized, one for the player's starting positon, or spawn point, and one for the ending point as a goal for the character, I know how to create a matrix of random numbers using the rand command, however, I have no idea how to insert 2 unique points and make sure those 2 points are always there

Answer 1

[Kevin Phung]

start_pt = [1 3]; % first row,  third col
end_pt = [5 1]; % fifth row, first col
M = rand(5); %5x5 random map
M(start_pt(1),start_pt(2)) = some_unique_value;
M(end_pt(1),end_pt(2)) = some_other_unique_value;

is this what youre looking for?

[Tyler Nelson]

I didn't think about that, it would work, do you know of a way to randomize the start and end points ,or should I just keep them as fixed points?

[Kevin Phung]

I don't have too much context so I don't really know what to suggest as the most optimal method. What exactly are you randomizing? Are you randomizing INDICES for where the start/end points would be, or are you randomizing the VALUE located at those FIXED indices?

the randi() function could help you here.

https://www.mathworks.com/help/matlab/ref/randi.html