MATLAB: Trying to plot three sets of means into one graph/one figure

brownian motionfiguremeanplotplottingsubplotwiener process

I'm trying to plot three different Brownian motion means into one plot. I'm able to get three figures as I did that, but I'm having a hard time plotting the three lines into one graph. I tried subplot, but I think I'm doing it wrong as it isn't working.
for i = 1:100
  W(:,i) = brownianPath(1,200);
  l1 = mean(W,2);
  figure(1);
  plot(l1,'g-');
  grid on
end
for p = 1:1000
  W(:,p) = brownianPath(1,200);
  k = mean(W,2);
  figure(2);
  plot(k,'r-');
  grid on
end
 for g = 1:10000
    W(:,g) = brownianPath(1,200);
    h = mean(W,2);
    figure(3);
    plot(h,'b-')
    grid on
 end

Best Answer

You open three different figures in your code. That is wrong. Instead, define one figure at the beginning and let anything plot on it.
figure;hold on;grid on;
for i = 1:100
  W(:,i) = brownianPath(1,200);
  l1 = mean(W,2);
  plot(l1,'g-');
end
for p = 1:1000
  W(:,p) = brownianPath(1,200);
  k = mean(W,2);
  plot(k,'r-');
end
 for g = 1:10000
    W(:,g) = brownianPath(1,200);
    h = mean(W,2);
    plot(h,'b-')
 end
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