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20th November 2006, 14:47 #1
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Plotting 3D graphs in Matlab
Hi there,
I looked up in the help but couldnt get a good example on how to plot a 3D curve in matlab.
I need to plot z =x^2+16*x*y^3 + 64*y^6 + 2*(x2*xy4)^4 how can I do this?

20th November 2006, 14:47

20th November 2006, 15:56 #2
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Re: Plotting 3D graphs in Matlab
>>xord=2:.2:2;
>>yord=2:.2:2;
>>[x,y]=meshgrid(xord,yord);
>>z=x.^2 + 16*x*y.^3 + 64*y.^6 + 2*(x2*x*y4).^4;
>>plot3(x,y,z);
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27th January 2007, 06:48 #3
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Re: Plotting 3D graphs in Matlab
surf(x,y,z) or surfc(x,y,z) may help

27th January 2007, 06:48

13th June 2007, 11:45 #4
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Re: Plotting 3D graphs in Matlab
surf and mesh functions works for you. If you use a sigle matrix as argument they plot z values on a 1:numrows (y axe) by 1:numcols (x axe). If you want to add specific x and y coordinates of each values you use surf(x,y,z) where x and y are 2 matrix x(n,m) and y(n,m) are the coordinates of z(n,m).

4th July 2007, 15:54 #5
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Re: Plotting 3D graphs in Matlab
its quite simple,
i use
plot3(x,y,z);
mesh.
surf.
waterfall.
and others
check the help on each of them

4th July 2007, 15:54

1st April 2010, 21:58 #6
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Re: Plotting 3D graphs in Matlab
hii... I m sauchon from Malaysia.
I want plot the
z=x.^2 + 16*x*y.^3 + 64*y.^6 + 2*(x2*x*y4).^4;
in MATLAB .
But, I want in z function in dynamic function .
How can i do this?
Any advice or suggestion of command can share with me?
Thx a lot....

5th April 2010, 15:24 #7
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Plotting 3D graphs in Matlab
@tohsauchon: What the meaning of Dynamic Function??, please explain the full detail, Hehehe..
I ussually use the symbolic variable for plotting function, cuz it run smoother, ..
syms x y z
z = x^2+16*x*y^3 + 64*y^6 + 2*(x2*x*y4)^4;
ezmesh(z)
you can also use the ezsurf(z), ..
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