Plot with MATLAB

Question

everybody,

I have a new problem with matlab, I want to generate a graph using Plot !

I wrote that:

X=[0, 2.5];
P = 0.1 * ones(N,11);
N=length(X);
for n=1:N
    for t=1:10
    P(n,t+1)=X(n)*P(n,t)*[1-P(n,t)];
    end
end
plot(t,P)

But again the computer answer me that :

??? Error using ==> plot
Vectors must be the same lengths.

Error in ==> test at 10
plot(t,P)

I do not have any idea of why ?

Please format your question correctly; you can sort out the code by selecting it and clicking the button marked {} in the editor. — Oliver Charlesworth
– Oliver Charlesworth, Commented Dec 11, 2011 at 13:16

Boris · Accepted Answer · 2011-12-11 13:25:34Z

2

The variable t in your plot command is no a vector but just the scalar 10. You have to call the plot command instead with

plot(1:11,P);

answered Dec 11, 2011 at 13:25

Boris

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3 Comments

Thanks a lot ! Do you know How can I do something like thaht : hpics.li/57b346a if I substitute X by Psi, because Now All my graphs are together...

You have to use the subplot command for this type of plots. Take a look at the Matlab help with doc subplot for more details.

I think you want plot(0:10, P), but I can't be sure.