MATLAB: Colormap Question for script requirements? – Homework

colormaphomeworkimagematrixmatrix image

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???

Best Answer

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]);
Related Question