Plotting the Gravitational Force Field in an Octant Excluding the Origin

> fieldplot3d(F_grav,x=0.5..1.5,y=0.5..1.5,z=0.5..1.5,scaling=constrained,thickness=2,arrows=SLIM,shading=zhue,axes=normal,orientation=[-45,65]);

This removes the infinity happening at r=0 from the plot, and makes the lengths of the arrows representing the vector field scale better.

>