A cone https://cdn.thingiverse.com/as....sets/fa/cc/ff/40/31/ plot is the https://cdn.thingiverse.com/as....sets/0c/28/e0/94/4b/ 3D https://cdn.thingiverse.com/as....sets/ae/b9/55/fe/60/ equivalent of https://cdn.thingiverse.com/as....sets/03/d2/a8/91/03/ a 2D quiver plot, i.e., it represents https://cdn.thingiverse.com/as....sets/08/a8/67/17/a3/ a 3D vector field https://cdn.thingiverse.com/as....sets/c6/85/fd/ec/5e/ using cones to represent the https://cdn.thingiverse.com/as....sets/13/bf/86/82/12/ direction https://cdn.thingiverse.com/as....sets/47/cc/90/87/98/ and https://cdn.thingiverse.com/as....sets/8b/df/2a/9f/3f/ norm of the vectors. 420b4ec2cf .