Concentric circles

[Krikor]

Unlike the solutions presented previously, using the script mentioned by @rinaldop in post #1, there is no need for a path to be created in advance, just make a selection and run the script.

The selection can either be a geometric figure or something irregular.

Below I tried to generate a result as per the OP's request in post #1:

Quote:"I am trying to make 120 concentric circle images. I want to start at 600x600 with a border of 2, then 598x598 with a border of 2, then 596x596 with a border of 2, etc."

But this script does not maintain the uniformity of the circle at each concentricity.
In the end, the generated figure is no longer a circle. I would say an octagon.

   

In my previous post I had suggested the Ottia Tuota plugin as an option, but I realized that as the number of concentric circles increases, the distance (thickness) between the circles decreases. Thus avoiding a stable 2 px border;

Only with the ofn-path-inbetweener plugin was I able to produce the result as described by rinaldop.