How to plot binary matrix as dots?

I have a Matrix with ones and zeroes. How to plots the matrix with zeroes as black spot and ones as whote dots as shown in figure below.

Answer 1

[Star Strider]

Try this —

M = randi([0 1],25)>0;                                      % Logical Matrix

[r,c] = find(M);

figure
scatter(c, r, 75, 'sw', 'filled')
set(gca, 'Color','k', 'YDir','reverse')
axis([0 size(M,1)+1  0 size(M,2)+1])

% axis('equal')

The spy function works for this, however it does not have the ability to fill the markers, so I went with scatter instead.

figure
spy(M,'sw');
set(gca, 'Color','k')

hs.MarkerFaceColor = 'w';

Experiment to get the result you want.

.

Answer 2

[millercommamatt]

FH = figure;
imagesc(yourMatrix);
colormap(FH,[0,0,0;1,1,1]);

Answer 3

[the cyclist]

M = magic(7);
B = M > mean(M);

colormap('gray')
imagesc(B)
axis square

Answer 4

[Matt J]

imshow(yourMatrix)