Show circles of desired radio and not filled in ScatterPlot

[gilcu2]

I need to display circles with radio depending on the data. I tried to do with PointRendered.custom but the scale factor is not available with this function.
Also, I need to paint a circle, that is only the border of the disk but traying with
Disc.centered(x.radio).filled(transparentColor).colored(visibleColor).weighted(2)
only paint the inside any way.
What can I do?
Thanks
Reynaldo