How can I 'tile' a radial grad?

I’d like to create a giant large world with many radial grads evenly spaced.

In other programs I would simply “tile”, and doing it in another image editor is an option, but I want to know, is there is a way to do it in World Machine?

If you’re using the development version, this can be done easily by using a radial gradient generator in localspace, and an instance placer.

Create a radial gradient device, right click, and select “Quick-set spatial type” to Localspace.
Create an instance placer device, and connect the radial gradient to the input. The radial gradient is now tiled across all of worldspace; you can adjust the sizing, etc within the placer device.