Add xyz arrows in plot

Hi,

I have a plot like this:

Now i want to add in the middle of the plot some xyz arrows so that i can show how the lines are going, something like this:

Can anyone help me how to fix this?

Cheers.

Answer 1

[KSSV]

% points 
x = rand(50,1) ; 
y = rand(50,1) ; 
z = rand(50,1) ; 
% vectors
u = rand(50,1)/10 ; 
v = rand(50,1)/10 ; 
w = rand(50,1)/10 ; 
%
O = zeros(size(x)) ; 
% plot 
plot3(x,y,z,'.-r')
hold on
quiver3(x,y,z,u,O,O,'r')
quiver3(x,y,z,O,v,O,'b')
quiver3(x,y,z,O,O,w,'g')