'Filling in plot animation (polar function)
I have a set of videos shown in an assignment. How is this animation created? I am trying to create something similar. Below is my attempt; it is only drawing lines because I believe it is not filling in the correct inputs. Guidance would be much appreciated
clear;close all;
th = 0:0.1:pi*2
r = cos(2*th) .* sin(2*th);
x = r .* cos(th);
y = r .* sin(th);
plot(x,y);
hold on
for th = 0:0.1:pi*2
x0 = [r .* cos(th)];
y0 = [r .* sin(th)];
fill(x0,y0,'b');
pause (0.5);
end
hold off
Solution 1:[1]
A similar animation can be drawn by filling from lists. Putting clf
in the for-loop is optional.
This following code animates the drawing process of a small flower. The flower will look proportionally bigger or smaller by changing the axis.
X = 0:0.01:pi*2;
r = cos(2*X).*sin(2*X);
x=r.*(cos(X));
y=r.*(sin(X));
x_1 = []; y_1 = [];
for i=1:629 %629 is the size of x and of y
x_1 = [x(i), x_1];
y_1 = [y(i), y_1];
fill(x_1,y_1,'b'); hold on;
axis([-2 2 -2 2]); hold on;
pause(0.01);
end
Solution 2:[2]
I managed to draw the function in polar coordinates with polarplot(th, radius), I could not fill with yellow color and neither animate the graph, I'm sorry.
clear;close all;
th = linspace(0, 2*pi, 1000);
r = cos(2 .* th) .* sin(2 .* th);
polarplot(th,r)
Sources
This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.
Source: Stack Overflow
Solution | Source |
---|---|
Solution 1 | P.Y.C. |
Solution 2 | KarloKalenda |