There is a bit more in the work sheet [Nsectors, inner radius].
More can be done... for instance: if the XY Lissajous would be
a closed isoline around a mountain, it would easy to adapt this
basic construction ... adjust the great circle, inner circle.
You can add/size the inner circles.

Jean



2D Radial Grid.sm (24.45 KiB) downloaded 1173 time(s).

... ont his one: added noise on the inner circle.

2D Radial Grid.sm (42.48 KiB) downloaded 1153 time(s).

1.sm (8.6 KiB) downloaded 1139 time(s).

Hello Ber7,

Thanks for that one. I guess that's how they size cauliflower heads !

Jean