Plotting of for loop

Halo

Please can anyone tell me why my for loop is not plotting for all the points on one graph but only the last value of the for loop.

a=0.171296;
b=0.856479;
c=0.25;
d=0.85285;
k1=d/a;
k2=d/c;
k3=((a^2)-(b^2)+(c^2)+(d^2))/(2*a*c);
k4=d/b;
k5=((c^2)-(d^2)-(a^2)-(b^2))/(2*a*b);

for theta2=1:1:360;    
A=cosd(theta2)-k1+k3-k2*cosd(theta2);
B=-2*sind(theta2);
C=k1-k2*cosd(theta2)+k3-cosd(theta2);
D=cosd(theta2)-k1+k5+k4*cosd(theta2);
E=-2*sind(theta2);
F=k1+k4*cosd(theta2)+k5-cosd(theta2);
theta3=(2*atand((-E-(sqrt((E.^2)-(4*D.*F))^0.5)))./(2*D));   
theta4=(2*atand((-B-(sqrt((B.^2)-(4*A.*C))^0.5)))./(2*A));  
omega2=0.5;
omega3=((a*omega2)/b)*((sind(theta4-theta2))/(sind(theta3-theta4)));
omega4=((a*omega2)/c)*((sind(theta2-theta3))/(sind(theta4-theta3)));
plot (theta2,omega3,'b-')
grid on;
hold on;
legend('omega 3');
xlabel('theta 2');
ylabel('omega 3');
title ('Velocity of links 3 & 4');
plot (theta2,omega4,'r-')
grid on;
legend('omega 4');
xlabel('theta 2');
ylabel('omega 4');
title ('Velocity of links 3 & 4');
hold off;
end

Thank you

Answer 1

[Azzi Abdelmalek]

a=0.171296;
b=0.856479;
c=0.25;
d=0.85285;
k1=d/a;
k2=d/c;
k3=((a^2)-(b^2)+(c^2)+(d^2))/(2*a*c);
k4=d/b;
k5=((c^2)-(d^2)-(a^2)-(b^2))/(2*a*b);
figure;
grid on;
hold on;
for theta2=1:360;
  A=cosd(theta2)-k1+k3-k2*cosd(theta2);
  B=-2*sind(theta2);
  C=k1-k2*cosd(theta2)+k3-cosd(theta2);
  D=cosd(theta2)-k1+k5+k4*cosd(theta2);
  E=-2*sind(theta2);
  F=k1+k4*cosd(theta2)+k5-cosd(theta2);
  theta3=(2*atand((-E-(sqrt((E.^2)-(4*D.*F))^0.5)))./(2*D));
  theta4=(2*atand((-B-(sqrt((B.^2)-(4*A.*C))^0.5)))./(2*A));
  omega2=0.5;
  omega3=((a*omega2)/b)*((sind(theta4-theta2))/(sind(theta3-theta4)));
  omega4=((a*omega2)/c)*((sind(theta2-theta3))/(sind(theta4-theta3)));
  plot (theta2,omega3,'b-')
  plot (theta2,omega4,'r-')
end
legend({'omega3','omega 4'});
title ('Velocity of links 3 & 4');
xlabel('theta 2');
ylabel({'omega 3';'omega 4'});
hold off;