How to visualize a table in a color dot plot?

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Joao Paulo
Joao Paulo 2022-5-13
回答： KSSV 2022-5-13
Hello!
I have a table with some values:
And I want to display the table in a graph like this:
Basically when the value is 0 nothing happens, when is negative is a blue dot and when is positive is a red dot.
Does anyone know how to do this?
Thanks!

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KSSV
KSSV 2022-5-13
Let A be your matrix.
[m,n] = size(A) ;
[X,Y] = meshgrid(1:m,1:n) ;
figure
hold on
plot(X(A<0),Y(A<0),'.b')
plot(X(A>0),Y(A>0),'.r')

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