How to use patch/fill on a polarplot

Hi all

I can't seem to get this right, so I figure I better ask someone with more experience:

How do I use patch/fill to fill in a polygon in a polarplot setting?

Based on the example listed in the help for polarplot: How do I fill in this triangle with e.g. the color red?

t = 0 :pi/1.5: 2*pi;
pp=polarplot(t, sin(2*t).*cos(2*t), '--r');

Answer 1

[Divyajyoti Nayak]

Hi @Jakob Sievers,

From MATLAB R2025a, the 'patch' function now works on polar axes. Here's some sample code for it and the documentation to help out:

clc
clear

p = polaraxes;

r = [0;1;1];
theta = [0;pi/3;2*pi/3];
patch(p,theta,r,'red');

'patch' : https://www.mathworks.com/help/releases/R2025a/matlab/ref/patch.html

[Adam Danz]

Read more about polar patches and surface: https://blogs.mathworks.com/graphics-and-apps/2025/09/30/polar-plots-with-patches-and-surfaces-r2025a/