How can I plot a few dots in matrix plot?
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采纳的回答
[X,Y] = meshgrid(1:5,1:5) ;
plot(X,Y,'*')
A = ones(5) ;
spy(A)
更多回答（1 个）
[X,Y] = meshgrid(6:6:24);
scatter(X, Y, 'b*')
xlim([0 30]); ylim([0 30])
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