how to solve error using horzcat dimensions of array being concatenated are not consistent

% running function_simulasi
clear
clc
x0 = 0.02; %g/L
tspan = (0:2:80);
[t, x]=ode23('function_simulasi',tspan,x0);
j= 1;
for i = 0:1:80
    y(j)= [i, x];
    plot(y(:),'r.'); drawnow
    j=j+1;
    
end


title('Konsenterasi Biomassa terhadap waktu')
xlabel('Waktu reaksi (jam)')
ylabel('Konsenterasi (g/L)')

the problem that is in the line : y(j)= [i, x];

can anyone explain?

Answer 1

[KSSV]

% running function_simulasi
clear
clc
x0 = 0.02; %g/L
tspan = (0:2:80);
[t, x]=ode23('function_simulasi',tspan,x0);
plot(t,x(:,1))
title('Konsenterasi Biomassa terhadap waktu')
xlabel('Waktu reaksi (jam)')
ylabel('Konsenterasi (g/L)')

Answer 2

[VBBV]

You can transpose the output of ode23 as follows

y(j,:)= [i, x(:,1).'];  % transpose col matrix  
plot(y,'r.'); drawnow

[VBBV]

y(j,:)= [ones(1,length(x)).'*i, x];  % transpose col matrix  
plot(y(:,1),y(:,2:end),'r.'); drawnow

alternately you can try this too