how to create black and white checkerboards with different number of squares

How can I create black and white checkerboard with different number of squares, for example, 2 squares, 4, 8, 16,32....

with the inbuilt checkerboard function, there is grey squares, which is undesirable

Answer 1

[Adam Danz]

The output of checkerboard() contains normalized values where 0 represents black, 1 represents white, and values between represent shades of gray. Just replace the values greater than 0 with 1.

I = checkerboard(20);
I(I>0) = 1;
imshow(I)

[Jimmy Liang]

thank you !!

[Jimmy Liang]

And do you know can I grant values in the squares. for example, white squares represent a value(i.e. 10), black squares represent another value (i.e. 100). thank you so much

[Walter Roberson]

mask = I > 0;
I(mask) = 10;
I(~mask) = 100;