Week 2- 2R Robotic Arm Challenge

close all
clear all
clc
 % forward kinematics of Robotic Arm 
 
 %Inputs 
  theta1 = linspace(0,90,10);
  theta2 = linspace(0,90,10);
  l1  = 1 ;
  l2  = 0.5;
  
  % equations to be used for kinematic analysis 
  % X = 0;
 
  %Y =  0;
  %x1 = l1*cosd(THETA1);
  %y1 = l1*sind(THETA1);
  %x2 = x1 + l2*cosd(THETA2);
  %Y2 = y1 + l2*sind(THETA2);
  
  % we are using two 'for' loop here because we wants all possible positions
  % of theta2 for one positions of theta1;
  % for getting no of plots we have to write ct = 1 before starting loop
  % and ct = ct +1 after plot command to get no of plots for different
  % positions of theta;
  
  ct = 1 
  for i = 1: length(theta1); 
      THETA1 = theta1(i);
      for j = 1 : length(theta2);
          THETA2 = theta2(j);
  % we are defining our loops over entire length of theta by length command
  % THETA1 and THETA2 are then calculated along the loop an we are using
  % this values values in our equation;
   x = 0;
  y =  0;
  x1 = l1*cosd(THETA1);
  y1 = l1*sind(THETA1);
  x2 = x1 + l2*cosd(THETA2);
 y2 = y1 + l2*sind(THETA2);
 
 figure(ct);
 hold on 
 plot([x x1],[y y1 ],[x1 x2],[y1 y2 ])
 axis([-0.1 2 0 3]);
 pause(0.3);
 

 % with these programme i am able to get 100 plots for each and every
 % combinations of robotic arm. now i wants to make a movie of this plots
 % lets define M(ct) for getting movie of frames
 
 M(ct) = getframe(gcf);
 ct = ct +1 

      end
  end
  % now lets create videofile and write this frames in videofile to get
  % movie of frames or plots.

  videofile = VideoWriter('kinematics_of_robotic_arm.avi','Uncompressed AVI');
   %I  have just made a videofile and given name using VideoWriter command.
   open(videofile);
   writeVideo(videofile,M); % this command is for writing frames in videofile
   close(videofile);
    % now we have got video of different plots.
  

during this challenge i got some errors and screenshots for same are attached in this box . i have fixed all the errors by writing command properly.

in this error i have given bracket before then i corrected it 

i have writter theta instead of theta1 

I have written Movie(M) command so i was got this error but after removing Movie(M) command i got correct outputhttps://youtu.be/0e5YgjGxbaY