Arrows 3D

using Makie
 using LinearAlgebra

 function SphericalToCartesian(r::T,θ::T,ϕ::T) where T<:AbstractArray
     x = @.r*sin(θ)*cos(ϕ)
     y = @.r*sin(θ)*sin(ϕ)
     z = @.r*cos(θ)
     Point3f0.(x, y, z)
 end
 n = 100^2 #number of points to generate
 r = ones(n);
 θ = acos.(1 .- 2 .* rand(n))
 φ = 2π * rand(n)
 pts = SphericalToCartesian(r,θ,φ)
 arrows(pts, (normalize.(pts) .* 0.1f0), arrowsize = 0.02, linecolor = :green, arrowcolor = :darkblue)