How do I quiver plot magnetic field

I have the following code that will calculate the magnetic field from a stationary dipole in three dimensions:

function B = B_function_quiverplot(x,y,z)

%r_b vector from origin to gradiometer reading %r_m vector from origin to magnetisation mass %m is the magnetisation vector %% b0=[-.4e3 18.3e3 -45.8e3]; %earth field in nT r=[x;y;z] const = 1.2566e-6/(4*pi); m=(.2/const)*b0 %Evaluating B

dot_rm=dot(r,m); norm_r=norm(r)

B= const*( ((3*dot_rm)/(norm_r^5))*r - (1/(norm_r^3))*m)

end

How can I produce a 3-d quiver plot of the vector field?

Answer 1

[José-Luis]

You could use quiver3().

[matlabkid602]

not getting good results

[José-Luis]

"Not getting good results" is a poor descriptor of the issues you are facing.

• What do you have?
• What do you want?

[matlabkid602]

I would like to see field lines that look like this but for a magnetic dipole, but in three dimensions.

https://scicomp.stackexchange.com/questions/21470/plot-vector-field-in-matlab

[José-Luis]

That's what quiver3() does.