MATLAB: Circles with particular radius for latitude and longitude points plotted on map

Question

I have few points with latitude and longitude on the map.

This is what I have now (see image below) and I am interested in creating circles with particular radius, how can I do that?

Answer 1

R = 1. ;    % radius of circle 
C = rand(2,1) ;   % center of circle 
th = linspace(0,2*pi) ;
x  = C(1)+R*cos(th) ; 
y = C(2)+R*sin(th) ;
plot(x,y) ;