MATLAB: Changing a figure to a subplot

creatingfiguresubplot

Currently stuck… This code below creates a figure and three subplots as I have designed it too. I cannot figure out how to change the figure in the while loop to a subplot with the other subplots below.
Any help is greatly appreciated.
%--------------------Value Function Interation-----------------------------
%Start Timer 
tic
Vold=zeros(1,n);
Iteration = 0;
error = 1;
while error>tol 
    [Vnew g] = max(utility+beta*Vold'*ones(1,n));
    error = max(abs(Vold - Vnew))
    Vold = Vnew;
    Iteration = Iteration + 1 
        %Set up convergence graphics -- optional 
        hold on;
        plot(kgrid,Vold)
        xlabel('k')
        ylabel('V(k) Iterations')
        title('The Convergence Process')
        hold off;
end 
k= kgrid;
kp = kgrid(g); 
c = f(k)+(1-delta)*k-kp;
%End Timer 
toc
%---------------------Create Plots for Results----------------------------
%Plot
scrsz = get(0,'ScreenSize');
figure('Position',[scrsz(3)*1/4 scrsz(4)*1/4 scrsz(3)*1/2 ...
scrsz(4)*1/2]);
subplot(2,2,1)
plot(kgrid,Vold)
xlabel('k');
ylabel('V(k)');
title('Value Function');
subplot(2,2,2)
plot(kgrid,[kgrid; step*g]);
xlabel('k');
ylabel('g(k)');
title('Policy Function');
legend('45 degree-line','Policy Function','Location','Best');
subplot(2,2,3)
plot(kgrid,c);
xlabel('k');
ylabel('c(k)');
title('Consumption');

Best Answer

I can neither see any mistake in your plotting code nor reproduce your problem. However, better not rely on the current handle. An example in the doc says:
Create a figure with two subplots and return the subplot axes handles, ax1 and ax2.
    figure
    ax1 = subplot(2,1,1);
    ax2 = subplot(2,1,2);
Store the data from the peaks function in matrix Z. Plot the first 20 rows of Z in the upper subplot using its handle, ax1. Plot the entire data set in the lower subplot using its handle, ax2.
    Z = peaks;
    plot(ax1,Z(1:20,:))
    plot(ax2,Z)
Thus:
Try replace your
    subplot(2,2,1)
    plot(kgrid,Vold)
by
    ax1 = subplot(2,2,1);
    plot( ax1, kgrid,Vold)
etc.
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