Getting blank plots in matlab

hi, i'm running the code without errors but getting blank plots can't figure out where is the problem

Answer 1

[Hiro Yoshino]

figure;
subplot(3,1,1);
plot(th7,th6,'g','linewidth',2);grid
xlabel('{   \theta_{7}} [deg]');

(th7, th6) is a point - try this one:

figure;
subplot(3,1,1);
plot(th7,th6,'o');grid
xlabel('{   \theta_{7}} [deg]');

[Kyrillos Fathi Kamal]

thanks for replying sir, but gives a small circle not the entire plot that the code should give

[Hiro Yoshino]

That is because the variables you're using, th7 and th6, are not vectors.

If that is not what you expected, then you must have made mistakes somewhere.

[Hiro Yoshino]

I suggest you use "break points" so that you can check and see what's going on.

[Kyrillos Fathi Kamal]

ok will check and see, thanks