How to assign 0 or 1 randomly to the coordinates?

Question

Mehrdad Nasirshoaibi 2023-2-21

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1916535-how-to-assign-0-or-1-randomly-to-the-coordinates

评论： Voss 2023-2-21

采纳的回答： Star Strider

在 MATLAB Online 中打开

Hi everyone,

I defined a grid mesh as the follow;

x = linspace(-2,2,10) ;

y = linspace(-2,5,10) ;

[X,Y] = meshgrid(x,y) ;

plot(X,Y,'.r')

P = [X(:) Y(:)]

P = 100×2

-2.0000 -2.0000 -2.0000 -1.2222 -2.0000 -0.4444 -2.0000 0.3333 -2.0000 1.1111 -2.0000 1.8889 -2.0000 2.6667 -2.0000 3.4444 -2.0000 4.2222 -2.0000 5.0000

My question is that how can I assign only 0 or 1 to each coordinate randomly?

Thank you in advance.

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Answer 1

Star Strider 2023-2-21

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1916535-how-to-assign-0-or-1-randomly-to-the-coordinates#answer_1176860

在 MATLAB Online 中打开

I am not certain what you want to do.

Perhaps this —

x = linspace(-2,2,10) ;

y = linspace(-2,5,10) ;

[X,Y] = meshgrid(x,y) ;

c = randi([0 1], size(Y))==1

c = 10×10 logical array

1 0 0 0 1 1 0 1 1 0 1 1 1 0 1 0 0 1 0 0 1 1 1 0 1 0 1 0 0 0 1 0 0 1 1 1 1 0 1 1 0 0 1 0 1 1 1 0 0 1 0 1 1 0 0 1 0 0 0 0 0 0 1 0 0 1 0 0 0 1 1 0 0 0 1 0 1 0 1 0 0 0 0 1 0 0 0 0 1 1 1 1 1 1 1 1 0 1 1 1

figure

plot(X(c),Y(c), '.r')

hold on

plot(X(~c), Y(~c), '.b')

hold off

axis('padded')

legend('1','0', 'Location','best')

The top row of ‘c’ correspoionds to -2 and the bottom row corresponds to +5. The columns are not flipped.

.