We are trying to make a board, using a matrix with numbers 0, 1 and 2. How can we specified the color of each number in the board using image?

We are trying to make a board, using a matrix with numbers 0, 1 and 2. How can we specified the color of each number in the board using image?

Answer 1

[Matt Sprague]

You can treat the matrix created as an indexed image and use ind2rgb after defining a custom colormap with 3 levels (one for each value). A small example is shown below for setting the value of 0 to red, 1 to green and 2 to blue.

num = randi(3,100)-1;%randi generates integers from 1-3. 
map = [1 0 0
       0 1 0
       0 0 1];
rgbImage = ind2rgb(num+1, map);
imagesc(rgbImage)