How to assign 0 or 1 randomly to the coordinates?

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.

Answer 1

[Star Strider]

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.

.

[Mehrdad Nasirshoaibi]

Awesome. Thank you so much.

[Star Strider]

As always, my pleasure!

Answer 2

[Voss]

val = randi([0 1], size(X)) ;

[Mehrdad Nasirshoaibi]

Thanks buddy.

[Voss]

No prob chum