Moving and stopping simulation code?

Hey guys, I want to simulate a simple moving and stopping simulation. A circle with move along a rectangular path, and then will stop for couple second in some determined spot, and finish after reach the starting point. Can you help me with the code? Thank you in advance.

Answer 1

[KSSV]

clc; clear all ;
N = 20 ;
x = linspace(0,1,N) ;
y = linspace(0,1,N) ;
[X,Y] = meshgrid(x,y) ;
% pick boundaries
x = [X(1,:)' ; X(:,end) ; flipud(X(end,:)') ;flipud(X(:,1))] ;
y = [Y(1,:)' ; Y(:,end) ; flipud(Y(end,:)') ;flipud(Y(:,1))] ;
% x(end) = [] ;y(end) = [] ;
% circle
th = linspace(0,2*pi) ;
r = 0.1 ;
for i = 1:length(x)
    xc = x(i)+r*cos(th) ;
    yc = y(i)+r*sin(th) ;
    plot(x,y,'.-r') ;
    hold on
    plot(xc,yc,'b');
    hold off
    % if condition   % put your condition to stop the circle
    pause(0.1)
    % end
end

[Rudi Gunawan]

Can you add some obstacle avoidance too? Just say at some spot the circle have to go out the path but then go back to the path after passing the obstacle. Thank you.

[Rudi Gunawan]

I got some problem with the if condition, it say "The expression to the left of the equals sign is not a valid target for an assignment." What should I do with this kind of problem? I have tried using 2 equal sign (==), it work but didn't stop the movement. What should I do?

[KSSV]

you have to read document....for if..you cannot expect each and every minor help online...