Plotting in 3d

How do I plot z=1/sqrt(x^2+y^2) in Matlab?

Answer 1

[madhan ravi]

 doc fsurf

Answer 2

[Alexander]

x = 1:0.1:10;
y = 1:0.1:10;
[X,Y] = meshgrid(x,y);
Z=1./sqrt(X.^2+Y.^2);

imagesc(x,y,Z)

[Zilla Tofte]

Why is the x and y=1:0.1:10...what does that mean?

[Zilla Tofte]

The picture of that code is just a blue grid...

[Alexander]

as an example, I plotted x/y in 1 to 10 range. You can substitute with whatever ranges you need. "0.1" is the step for x/y variables. x = 1:0.1:10 creates a vector of number [1 1.1 1.2 ..... 9.9 10].

[madhan ravi]

surf() instead of imagesc()