Grouping plots to be able to overwrite them with new data

Specific Domains Visualization
1

When visualising 3D data I would like to keep some geometrical structures fixed (plotted with a series of functions mesh!), while to be able to overwrite a set of plots made with lines!, text!, etc. with new data. Is it possible to define a plot set that I can delete before plotting the new data?

2

Do you have to delete them? You could also update the input observables of those plots. You can also delete with delete!

3

Thanks, but I do not know how the observables work. Any pointer to documentation or examples?
In my case new data comes with a variable number of lines and text. This is the reason I want to group them to issue a delete! of the previous data group and create new plots with the new data.

BTW, I do not even know how to use delete!. Perhaps is something obvious, but.
If I do

fig = Figure(resolution=(2048,2028))
 s = LScene(fig[1,1])
...
p = lines!(s, ...)
delete!(p)

I get

ERROR: MethodError: no method matching delete!(::Lines{Tuple{Vector{Point{3, Float32}}}})
4

What observables are is explained here for example https://docs.makie.org/stable/documentation/nodes/