MATLAB: Plot a marker in the center of the circle

centercirclesfunctionmarker

Hello all I have my code below and would like to know,

how can I edit it that it will always put a marker in the center of the circle each time and for multiple cicles

function circle = circleplot(x,y,r,c)
hold on
th = 0:pi/50:2*pi;
x_circle = r * cos(th) + x;
y_circle = r * sin(th) + y;
circle = plot(x_circle, y_circle);
fill(x_circle, y_circle, c)
axis equal
end

Thank you

Best Answer

Add this after the fill call:

plot(x, y, 'kp', 'MarkerSize',15, 'MarkerFaceColor','k')

Also consider separate arguments for the marker colour and size.

Related Solutions

MATLAB: How to get coordinates of a marker

You can plot your required circle given center and radius using the below method.

C = [346 278] ;  % Center of the circle 
R = 0.5 ;   % Radius 
th = linspace(0,2*pi) ; 
x = C(1)+R*cos(th) ; 
y = C(2)+R*sin(th) ;

MATLAB: I need help to plot circle around the points and these points are in a circle. please response

n=10; % number of points that you want
    center = [2 ,2]; % center coordinates of the circle [x0,y0] 

    radius = 10; % radius of the circle

      angle = 2*pi*rand(n,1);
      r = radius*sqrt(rand(n,1));
     X = r.*cos(angle)+ center(1);
     Y = r.*sin(angle)+ center(2);
     plot(X,Y,'.r')
     hold on
     %%Draw circle 
     R = 1. ;  % radius 
     th = linspace(0,2*pi) ;
     for i = 1:length(X)
         x = R*cos(th)+X(i) ;
         y = R*sin(th)+Y(i) ;
         plot(x,y,'b')
     end
     hold on
     center = [2 ,2]; % center coordinates of the circle [x0,y0] 
    radius = 10; % radius of the circle
    angle = 0:.01:2*pi;
    r = radius;
       X = r.*cos(angle)+ center(1);
       Y = r.*sin(angle)+ center(2);
     plot(X,Y,'.b')

Best Answer

Related Solutions

MATLAB: How to get coordinates of a marker

MATLAB: I need help to plot circle around the points and these points are in a circle. please response

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