how to add iterations to a matrix as values in a loop and then manipulate the matrix with another matrix from the user interface

hello

iam making a force analysis program the prog first takes some data from the user and then gets the unknown forces through 2 matrices V=a\b where a is the coeff matrix and b is the constant matrix the problem is the user is asked to enter 1 value of theta and it works fine give the forces at this theta but when i insert theta as th2=0:1:360 give a CAT arguments dimensions are not consistent.error i want to get the forces and get the corresponding theta and then plot them ..... any help would be great thnx in advance

the code is a push button callback 
  axes(handles.axes1) 
  th2=[1:360]; 

    alp2=handles.edit4; 
    l2=handles.edit1 ; 
    r2=handles.edit10; 
    w2=handles.edit3; 
    m2=handles.edit5 ; 
    u=handles.edit9 ; 
    l3=handles.edit2 ; 
    r3=handles.edit11 ; 
    m3=handles.edit6; 
    fp=handles.edit14; 
    e=handles.edit8; 
    m4=handles.edit7; 
    th2r=th2*(pi/180); 
    i3=get(handles.text56, 'string'); 
    i3n=str2double(i3); 
    i2=get(handles.text55, 'string'); 
    i2n=str2double(i2); 
    %%%%%%%%%%%%%Velocity and acc 
    th3=asin(((e)+(l2)*(sin(th2r)))/(l3)); 
    w3=(-w2)*((l2*cos(th2r))/((l3)*cos(th3))); 
    alp3=(((w2)^2)*(l2)*(sin(th2r))+((w3)^2)*(l3)*(sin(th3))-(alp2)*(l2)*(cos(th2r)))/((l3)*(cos(th3))); 
    alp4=(-alp2)*(l2)*(sin(th2r))-(alp3)*(l3)*(sin(th3))-((w2)^2)*(l2)*(cos(th2r))-((w3)^2)*(l3)*(cos(th3)); 
    ag3x=-(w2^2)*(l2)*(cos(th2r))-(alp2)*(l2)*(sin(th2r))-(w3^2)*(l3/2)*(cos(th3))-(alp3)*(l3/2)*(sin(th3)); 
    ag3y=-(w2^2)*(l2)*(sin(th2r))+(alp2)*(l2)*(cos(th2r))-(w3^2)*(l3/2)*(sin(th3))+(alp3)*(l3/2)*(cos(th3)); 
    thag3=atan(ag3y/ag3x); 
    ag2=sqrt(((w2^2)*(l2/2))^2+((alp2)*(l2/2))^2); 
    thag2=atan(((alp2)*(l2/2))/((w2^2)*(l2/2))); 
    ag2x=ag2*cos(thag2); 
    ag2y=ag2*sin(thag2); 
    %%%%%%%%%%%%%%%%%%Force analysis 
    %%%%%%here is the two matrices where the forces comes from and the torque which i want to plot with th2 
    %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
    %%%%%%%%%%A-(8*8) 
    A=[1 0 -u 0 0 0 0 0; 
    0 1 1 0 0 0 0 0; 
    -1 0 0 1 0 0 0 0; 
    0 -1 0 0 1 0 0 0; 
    (-l3/2)*sin(th3) (-l3/2)*cos(th3) 0 (-l3)*sin(th3) (-l3)*cos(th3) 0 0 0; 
    0 0 0 -1 0 0 1 0; 
    0 0 0 0 -1 1 0 0; 
    0 0 0 (l2)*sin(th2r) (l2)*cos(th2r) 0 0 -1]; 
    %%%%%%B(8*1) 
    B=[(m4*alp4+fp);%%%%
    (m4*9.81); 
    (m3*ag3x); 
    (m3*ag3y); 
    (i3n*alp3);%%%%%%%%%%
    (m2*ag2x); 
    (m2*ag2y+m2*9.81); 
    (((i2n+m2*((l2/2)^2))*alp2)+(l2/2)*cos(th2r))]; 
    V=A\B;
    T=V(8,1) 
    %%%%here i want T to came as a vectoe with 360 value
    plot(th2,T) 
    %%%%%%%%%%%%%%%%%%%%%%%
    this is the whole code 
    dont know how to get T as a vector 
    and plot it with th2 
    the values above are entered from the user expect th2 is an iteration
    the error mssg is
    ??? Error using ==> vertcat 
    CAT arguments dimensions are not consistent.
    Error in ==> GUIWORK>pushbutton3_Callback at 757 
    A=[1 0 -u 0 0 0 0 0;
    Error in ==> gui_mainfcn at 96 
    feval(varargin{:});
    Error in ==> GUIWORK at 43 
      gui_mainfcn(gui_State, varargin{:});
      Error in ==> 
      @  (hObject,eventdata)GUIWORK('pushbutton3_Callback',hObject,eventdata,guidata(hObject))

    ??? Error while evaluating uicontrol Callback

[bassam imam]

please help ........................

Answer 1

[Oleg Komarov]

The expressions in A:

(-l3/2)*sin(th3)
(l2)*sin(th2r)
...

should be scalar, which means that th2r and th3 should be scalars.

[bassam imam]

i cant make them scalar because i want to plot with a-lot of values not a single point can you help me to make a loop ? to iterate a vector of torque and theta2? theta 2 from 0:360 and the opposite values for theta 2

thnx in advance