Plot error: Index exceeds the number of array elements (104).

I am having the following error with plotting :

Index exceeds the number of array elements (104).

Error in MUSCL_main (line 144)
plot(Ini_x,history(h).U_Euler(1,:))

The code:

Nodes = 120;
cells = Nodes-1;
Ghost = 2;
Ini_x = Cells+2*Ghost;
U_Euler = zeros(8,Ini_x);
end_time = 6.0;
t= 0;
[dt_E] = DT(U_Euler, CFL, dx, 0);
n=0;
h=1;
while (t < end_time)
   for k = 1:4
    [U_Le, U_Re] = MUSCL(U_Le, U_Re , U_RK_Euler);
    
    V_EulerL = switch_Con2Prim(U_Le, Gamma, mu_0, 0);
    
   [Flux_E] = computeFluxes(Flux_E, V_EulerL, V_EulerR, U_Le,U_Re,dt_E,dx, 0);
   
   [Res_E] = Residual(Flux_E, dx, dy, dz, Res_E);
   
   [U_RKe] = RK4( U_Euler, dx, dy, dz, dt_E, k);
   
    U_RK_Euler = Boundary_periodic(U_RKe);
   end
    U_Euler = U_RK_Euler;
    t = t+dt_E;
    if mod(n,10)== 0
        history(h).U_Euler = U_Euler;
        h=h+1;
    end
       n=n+1;  
end
plot(Ini_x,history(h).U_Euler(1,:)) % error 

I am trying to plot the data saved in the "history"

[KSSV]

The error is clear, you are trying to extract more number of elements then present in the array. Check the dimensions of each array in the data used for plot.

[Jamie Al]

So, you're saying I could use U_Euler isnead to plot not the history?

Answer 1

[KSSV]

plot(Ini_x,history(end).U_Euler(1,:))