Error setting property 'String' of class 'UIControl' method lin bairstow

Hello! How are you. As you can see in the image, the matlab throws me an error in my script then I leave the code to tell me what's wrong with me, please I took a little time in Matlab and I really do not know how to solve this problem. i'm working in gui of matlab

% --- Executes on button press in pushbutton1. function pushbutton1_Callback(hObject, eventdata, handles)

a=zeros(1,7);

b=zeros(1,7);

c=zeros(1,7);

a(1,3)=str2double(get(handles.edit2,'string'));

a(1,4)=str2double(get(handles.edit3,'string'));

a(1,5)=str2double(get(handles.edit4,'string'));

a(1,6)=str2double(get(handles.edit5,'string'));

a(1,7)=str2double(get(handles.edit6,'string'));

r=str2double(get(handles.edit13,'string'));

s=str2double(get(handles.edit12,'string'));

ciclos=str2double(get(handles.edit11,'string'));

for k=1:1:ciclos

syms dr ds; for i=3:1:7 b(1,i)=a(1,i)+r*b(1,i-1)+s*b(1,i-2); end

    for j=3:1:7
    c(1,j)=b(1,j)+r*c(1,j-1)+s*c(1,j-2);
    end

E1=c(1,5)*dr+c(1,4)*ds==-b(1,6);

E2=c(1,6)*dr+c(1,5)*ds==-b(1,7);

[dr,ds]=(solve(E1,E2));

B=b;

C=c;

Deltas=[vpa(dr,4),vpa(ds,4)];

r=r+dr;

s=s+ds;

end

vpa(r,5);

vpa(s,5);

vpa(dr,4);

vpa(ds,4);

set(handles.edit7,'string',r);

set(handles.edit8,'string',s);

set(handles.edit9,'string',dr);

set(handles.edit10,'string',ds);

% --- Executes on button press in pushbutton2.

Answer 1

[Erwin Avendaño]

I'll try it later, the way I solved it is that the system of equations solved it with matrices (gauss jordan) and did not use the solve command for the system of equations. Thank you for answered

Answer 2

[Steven Lord]

You can't set the String property of a UIControl to contain a symbolic expression directly. Either convert the symbolic expression to a numeric array using double (this will NOT work if the expression contains a symbolic variable) or convert it into a char vector using char and set the result as the value of the String property.

[Erwin Avendaño]

I'll try it later, the way I solved it is that the system of equations solved it with matrices (gauss jordan) and did not use the solve command for the system of equations. Thank you for answered