3D Cone / Vector Field

3D vector field — visualise force, flow, or gradient at points in space.

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{
  "data":[{"type":"cone",
    "x":[1,2,3,4],
    "y":[1,2,3,4],
    "z":[1,2,3,4],
    "u":[1,0,-1,0],
    "v":[0,1,0,-1],
    "w":[0,0,1,1],
    "sizemode":"absolute","sizeref":2,
    "colorscale":"Bluered"}],
  "layout":{"title":"3D vector field"}
}