Colormap Question for script requirements? - Homework

I am trying to make two colormaps. Both will be using white and black colors only. It is a 50 x 50 matrix image where each element is randomly either white or black. However, the second image has the colors reversed (so all white is black and vice versa). This is my script I have.

subplot(1,2,1);
cm = [0 0 0;1 1 1];                
colormap(cm);
mat = randi(2,50);
image(mat);  
title('Yin');

subplot(1,2,2);
cm2 = [1 1 1;0 0 0];                
colormap(cm2);
image(mat);
title('Yang');

The only problem is that I don't know where to have the second image switch colors from the first image???

Answer 1

[Image Analyst]

Try this:

subplot(1,2,1);
matrix1 = uint8(randi(2,50) - 1);
imshow(matrix1, []);  
title('Yin', 'FontSize', 50);

subplot(1,2,2);
matrix2 = 1 - matrix1;
imshow(matrix2, []);
title('Yang', 'FontSize', 50);
% Enlarge figure to full screen.
set(gcf, 'Units', 'Normalized', 'OuterPosition', [0 0 1 1]);

[Nora]

That works! Just curious though, how would I keep the x and y axis numbers/scale?

[Nora]

What I mean is, is there a way to do the above using colormap?

I have this script but the second image isn't working.

subplot(1,2,1);
cm = [1 1 1; 0 0 0];                
colormap(cm);
mat = randi(2,50);
image(mat);  
title('Yin');

subplot(1,2,2);
cm2 = [1 1 1; 0 0 0];                
colormap(cm2);
mat2 = mat - 1;
image(mat2);
title('Yang');