Draws circles around a point. Like for Sholl's analysis.
Circles are overlays, non-destructive.
This could be made into a tool instead of macro where each time user clicks mouse at a location, circles are drawn.
Could also do something like analyze particles and draw circles around (or inside) seclections.
Could also move around each circle to count events that cross the circle.
single circle macro from 2021
multiple circles macro from 2022
Here's an old version with completely different code.