Convert plot to 64 by 64 grid matrix

Hello. I would like to convert this figure on the left to a 64 by 64 grid matrix. In the matrix, I want all values to be zero except the values that align with the red circles. Those values should be 1. Is this possible in matlab?

Answer 1

[David Hill]

[x,y]=meshgrid(linspace(-2,2,64));
z=zeros(size(x));
k=x.^2+y.^2;
z(k<=1)=1;%z is the grid matrix

[Nne Akallu]

Hello. Thank you. Please can you explain the code? I'm new to matlab :)

[David Hill]

meshgrid just creates all the possiblities for x and y in 64x64 matrix

computing k is just the equation of a circle using element-wise operations of the x and y matrices

zeros() just initially sets the z (answer) matrix to all zeros

z(k<=1) is logical indexing into z where k<=1 and setting all of those positions to 1