Problem displaying strings

Hey guyz. Can help me on this?

if size(cost,1) == 2

       A = (4*Pdt*cost(1,3)*cost(2,3)) + 2*(cost(1,2)*cost(2,3))+(cost(1,3)*cost(2,2));
       B = 2*(cost(2,3)+cost(1,3));
       lambda = num2str(A ./ B);
       set(handles.answer1_staticText,'String', lambda);
       P1 = (lambda - co开发者_StackOverflowst(1,2))./(2*cost(1,3));
       P2 = (lambda - cost(2,2))./(2*cost(2,3));
       PT = mat2str(P1 + P2);
       set(handles.answer2_staticText,'String', PT);
       guidata(hObject, handles);
end

From the coding above, the answer become like this :

[11.75 11.25 11.25 11.75 10.75 11.5 12.75 12.75 13]

My question is I want to display my answer at the static text box like this:

P1 = (%answer for P1)

P2 = (%answer for P2)

P TOTAL = (%answer for PT)

Can anyone help me with the coding?

---

You have converted lambda to a string (using num2str), and thus, the calculation of P1 etc will produce unexpected results.

It's better to only convert to string in the display step, so these accidents won't happen.

Try this:

if size(cost,1) == 2

       A = (4*Pdt*cost(1,3)*cost(2,3)) + 2*(cost(1,2)*cost(2,3))+(cost(1,3)*cost(2,2));
       B = 2*(cost(2,3)+cost(1,3));
       lambda = A ./ B;
       set(handles.answer1_staticText,'String', num2str(lambda));
       P1 = (lambda - cost(1,2))./(2*cost(1,3));
       P2 = (lambda - cost(2,2))./(2*cost(2,3));
       PT = P1 + P2;
       set(handles.answer2_staticText,'String', num2str(PT));
       guidata(hObject, handles);
end