Re: implicit plot ??

pluton <plutonesque@xxxxxxxxx> wrote in message
<82d95ebd-4736-4f15-bbe5-
ad11c70497ea@xxxxxxxxxxxxxxxxxxxxxxxxxxx>...
Hi all,

let say I have the follwing problem :

for p=1:100
for q=1:100
X(p,q)=0.01*p;
Y(p,q)=0.02*q;

M(X,Y) % M : matrix depending on the current value of X and
Y but not explained here
K(X,Y) % K : matrix depending on the current value of X and
Y but not explained here

[D]=eig(K,M);
Z(q,p)=max(real(D));
end
end
surf(X,Y,Z);

I then end up with a surface. How is it possible to simply plot the
intersection
of this surface with the plane Z=0 ?

Thank you,

Pluton
-----------
You have puzzled me, Pluton. From what you have shown us, it looks as
though you are using 'eig' inside the for-loops to compute the generalized
eigenvectors and eigenvalues of K and M before their computation is finished.
Am I wrong?

Perhaps you have better explain what you are trying to do in a little more
detail.

Roger Stafford

.