MATLAB: What do I need to add to this code to fill the circle with color

circle color filled

How can I create a circle filled with a color?

Best Answer

You almost answered your own Question. Use the fill function:

t = linspace(0, 2*pi);
r = 1;
x = r*cos(t);                                       % Circle Coordinates

y = r*sin(t);                                       % Circle Coordinates
figure(1)
fill(x, y, 'y')
axis equal

Related Solutions

MATLAB: Plot many filled circles

p= [0 0;1 2;-2 1;4 -2;-3 -3];
r=[1 2 3 4 5]
alpha=-pi:0.01:pi
x=cos(alpha)
y=sin(alpha)
for ii=1:numel(r)
  fill(r(ii)*(x-p(ii,1)),r(ii)*(y-p(ii,2)),'r')
  hold on
end

MATLAB: Fill area between circles

Here is one way:

% Get data for the two circles
[xp5, yp5] = circle(5,0,0,0,2*pi,0.01);
[xp10,yp10] = circle(10,0,0,0,2*pi,0.01);
% Draw the two circles
figure
hold on
plot(xp5,yp5)
plot(xp10,yp10)
% Fill in the area by defining the polygon that is defined by tracing the inner circle and then back along the outer circle
fill([xp5 flip(xp10)],[yp5 flip(yp10)],'g')
% Cover up the connecting line in the same color
h = line([xp5(1) xp10(end)],[yp5(1) yp10(end)]);
set(h,'Color','g')
% Set the axes to have equal length, so that they *look* like circles
axis equal

Best Answer

Related Solutions

MATLAB: Plot many filled circles

MATLAB: Fill area between circles

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