'Where can I plot large number of spheres given (x,y,z,r) coordinates?

My problem is the following one: I have a file with (x,y,z) coordinates of position of the center of some spheres and in the last column I have de radius r. What I want to do is to plot it in a similar way like the following image:

enter image description here

Does someone know which software can I use to do that? The number of spheres I have is LARGE (like 600000 spheres)

Thanks.



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