5x4 colored circle in a grid format

Hello,

How do I create a 5x4 circles in a grid formate with specific circles having different colors

Answer 1

[KSSV]

th = linspace(0,2*pi) ;
r = 0.1 ;
xc = r*cos(th) ;
yc = r*sin(th) ;

x = 1:5 ;
y = 1:4 ;

[X,Y] = meshgrid(x,y) ;
figure
hold on
for i = 1:4
    for j = 1:5
           patch(X(i,j)+xc,Y(i,j)+yc,rand(1,3))
    end
end

Or

th = linspace(0,2*pi) ;
r = 0.1 ;
xc = r*cos(th) ;
yc = r*sin(th) ;

x = 1:5 ;
y = 1:4 ;

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

c = sqrt(X.^2+Y.^2) ; 
scatter(X(:),Y(:),100,c(:),'filled')