How plot a shifted Parabola?
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I know Parabola have formula z=x^2+y^2 now I want to plot it when it has simple shifted like image: http://i55.tinypic.com/33y50kx.gif I know how to plot3 or surf but I don't know how to plot3 this one.
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Answers (2)
Paulo Silva
on 4 Mar 2011
plot3(X+10,Y+10,Z); %this shifts the parabola 10 units on both x and y axis
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Paulo Silva
on 5 Mar 2011
x=-10:0.1:10;
y=x;
z=x.^2+y.^2;
ang=pi/4;
sm=[cos(ang) 0 sin(ang)
0 1 0
-sin(ang) 0 cos(ang)];
r=sm*[x;y;z];
x=r(1,:);y=r(2,:);z=r(3,:);
[x,y]=meshgrid(x,y);
plot3(x,y,z)
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