Why does my attempt to plot keep resulting in a "Vectors must be the same lengths" error?

I have tried writing this code a couple of ways and keep producing the same error: "Plot: Vectors must be the same lengths." I am relatively new to Matlab.

    Pop0 = [0.2 0.42 1.0 1.4 5 6 7 8]

 format shortg

 for i = 1:length(Pop0)

    A = [0 0 Pop0(i); .6 0 0; 0 .75 .95]

    [v,lambda] = eig(A)

    lambdavector = max(lambda);
    for b1 = 1:length(lambdavector)
        if max(max(abs(lambda))) == abs(lambdavector(b1))
            loc = b1;
            deig = lambda(b1,b1);
        end
    end

    normv(:,i) = v(:,loc)/sum(v(:,loc));

 end

 a1 = normv(1,:);
 b1 = normv(2,:);
 c1 = normv(3,:);
 plot(Pop0,a1, 'r', Pop0,b1, 'g', Pop0,c1, 'b')
 xlabel('Adult Fecundity')
 ylabel('Equilibrium Structure')

Answer 1

[Image Analyst]

Set a breakpoint at the plot line, and hover your cursor over Pop0, a1, b1, and c1. You'll see that they're not all the same length. If you don't know what I'm talking about, see this excellent link: http://blogs.mathworks.com/videos/2012/07/03/debugging-in-matlab/

That said, I copied and pasted your code and it ran fine - no error message whatsoever !