Problem with plot function

Hi!

I have function: bfun:

function x = bfun(r)

n=30;
x(1:n)=0.5;
for k = 2:n
  x(k) = x(k-1)*r*(1-x(k-1));
end

And main program:

r = 3.7;
y = bfun(r);

plot(y,r,'x');

And it plot one line for r=3.7 I want to set r=1:0.1:7 and plot something like this:

But i cant find the way. Always got "error a(i) = x x must have the same size as i" Someone can help me, please?

Answer 1

[Chad Greene]

You only have one value for r (3.7), but you have many values for y. The plot function wants exactly one r value for each y value.