MATLAB Answers

How to plot binary matrix as dots?

조회 수: 39(최근 30일)
Dileep Vunnam
Dileep Vunnam 2021년 9월 15일
답변: Star Strider 2021년 9월 15일
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.

답변(4개)

millercommamatt
millercommamatt 2021년 9월 15일
FH = figure;
imagesc(yourMatrix);
colormap(FH,[0,0,0;1,1,1]);

the cyclist
the cyclist 2021년 9월 15일
M = magic(7);
B = M > mean(M);
colormap('gray')
imagesc(B)
axis square

Matt J
Matt J 2021년 9월 15일
편집: Matt J 2021년 9월 15일
imshow(yourMatrix)

Star Strider
Star Strider 2021년 9월 15일
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.
.

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