change the distance between grid lines

Hi

I have a script to plot lines in 3D , now the script is working and it's plotting what I want but because the points on the lines are very close to each other the lines are very close to each other, there is anyway to increase the space between grid lines on z axes, here is my script :

A=[10 10 10];
B=[5 15 30];
C=[162148 94541 72044];
A2=[10 10 10];
B2=[5 15 30];
C2=[159608 92905 71011];

plot3(A,B,C,'-k')
hold on;
plot3(A2,B2,C2,'-k')
grid on;

and the figure I'm getting is the following

Answer 1

[David Hill]

Look at the following function:

zticks()