%% Increment r-Axis Tick Values by 10
% Display tick marks and grid lines along the r-axis at increments of 10, starting from 0 and ending at 50.

theta = 0:0.01:2*pi;
rho = 50*sin(2*theta);
polarplot(theta,rho)
rticks(0:10:50)

% Copyright 2012 The MathWorks, Inc.