How to remove what outside the polar coordinate in polarscatter

I want to remove the lines outside the polar coordinate

For example with this code

th = [0.175 2.50];
r = [30 25];
polarscatter(th,r,9000);

But what I want is something like this

Answer 1

[Poorna]

Hi,

I understand that you would like to clip the markers outside a specific radius. But a marker cannot be directly clipped in MATLAB. However, you can achieve the same effect by plotting the marker as a circle and limiting the radial axis of the polar plot using the “rlim” function.

Below is a sample code that would achieve the required result.

%define centers of the markers
th = [0.175 2.50];
r = [30 25];
%define the radius of the markers required.
marker_radius = 10;

%define the coordinates of the marker circle.
theta = linspace(0,2*pi,100);
[x,y] = pol2cart(theta, marker_radius);
for idx = 1:2
    %convert the coordinates from polar to cartesian
    [x_c, y_c] = pol2cart(th(idx), r(idx));
    [th_points, r_points] = cart2pol(x+x_c, y+y_c);
    %plot the marker circle
    polarplot(th_points, r_points, "blue");
    hold on
end
%limit the radius to clip the marker circles
rlim([0 30]);
hold off

Hope this helps!