Problem with mesh function: ??? Index exceeds matrix dimensions.

Hello,

I have the above named error all the time, but I can't see the dimension problem.

-------------------------------

figure

x=[1:31];

y=[1:5];

[X,Y]=meshgrid(x,y);

Z=Price(x,y);

mesh(X,Y,Z)

xlabel('Stock Price')

ylabel('Sigma')

zlabel('Call Price')

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"Price" is a 31x5 matrice. I tried also playing with m x n changes of all inputs but nothing did work so far.

Thank you a lot for your help.

Dominik

Answer 1

[Walter Roberson]

If you are getting "index exceeds matrix dimensions" on the mesh() call, then likely you have accidentally created a variable named "mesh".

Note: if x and y are those vectors then Price(x,y) would be the same as Price by itself, and there would be no reason to use meshgrid(). Just mesh(Price);

[Dominik]

No, there is no variable called "mesh".

I will consider your note, but the meshgrid solution I chose isn't the problem?

[Dominik]

ok, I solved it: I fliped x and y in meshgrid(x,y);

[Walter Roberson]

I do not get "Index exceeds matrix dimension": I get "data dimensions must match".

Change your meshgrid() to ndgrid()