how to plotting all results when i using for loop

 for T_cond = [-100:20:0]

   for T_cond = 273.15+T_cond

       .
       .
       .
       etc..

       m_wf = m_LNG*(h_5s-h_5)/(h_4s-h_4);
       m_wf = m_wf + 0;
       E_th = (h_2-h_3-h_1+h_4)/(h_2-h_1);
       E_th = (E_th + 0)*100;

       disp(['E=',num2str(E_th),'%'])
       disp(['m=',num2str(m_wf),'kg/s'])

    end
 end
  plot(T_cond,m_wf)
  plot(T_cond,E_th)

I want to plot all results in for loop.. but I'm beginner..so It's so hard to me.. Actually This is the first time in my life..help me please

[KSSV]

YOu need to reconsider your code..you should not use same index T_cond for the loops.

Answer 1

[KSSV]

YOu should do the following to plot figure in a loop.

%%In aloop (not suggested)
  figure
  hold on
  for i = 1:10
      plot(rand,rand,'.r') 
  end

    %%suggested and effective
    x = zeros([],1) ;
    y = zeros([],1) ;
    for i = 1:10
        x(i) = rand ; % x,y are calculated inside loop
        y(i) = rand ;
    end
    figure
    plot(x,y,'-.')

[Jungmin Lee]

 T_cond = zeros([],1);
 m_wf = zeros([],1);
 E_th = zeros([],1);

 for i = -100:20:0
    T_cond(i) = i + 273.15;

    m_wf(i) = m_LNG*(h_5s-h_5)/(h_4s-h_4);

    E_th = (h_2-h_3-h_1+h_4)/(h_2-h_1);
    E_th(i) = (E_th + 0)*100;

   disp(['E=',num2str(E_th),'%'])
   disp(['m=',num2str(m_wf),'kg/s'])

 end

I'm sorry It's not working..What's the problem with me..?

[KSSV]

No negative indices in MATLAB.

T_cond = zeros([],1);
m_wf = zeros([],1);
E_th = zeros([],1);
T = -100:20:0 ;
for i = 1:length(T)

      T_cond(i) = T(i) + 273.15;
      P_eva = refpropm('P','T',T_eva,'Q',0,WF);
      h_4 = refpropm('H','T',T_cond,'Q',0,WF);
      m_wf(i) = m_LNG*(h_5s-h_5)/(h_4s-h_4);
      E_th = (h_2-h_3-h_1+h_4)/(h_2-h_1);
      E_th(i) = (E_th + 0)*100;
      disp(['E=',num2str(E_th),'%'])
      disp(['m=',num2str(m_wf),'kg/s'])
  end

[Jungmin Lee]

oh you're so kind a lot of thanks you so much,,but I have another error..sorry to bother you

 Input #3 is not a scalar.

[KSSV]

I should know the function refpropm with the inputs given. Knowing that only I we can help you.

Answer 2

[madhan ravi]

plot(T_cond,m_wf)
hold on
plot(T_cond,E_th)

Should be inside loop