Observables don't work with meshscatter

[lmarcon1]

Hi to everyone and to SimonDanisch ,

First of all congrats for the project. I am trying to use a slider to select the data to plot in "meshscatter", but when I do it I get these errors:

setindex! at /home/jjsermor/.julia/packages/Observables/qCJWB/src/Observables.jl:83 [inlined] [29] #696 at /home/jjsermor/.julia/packages/AbstractPlotting/B5nOF/src/interaction/events.jl:29 [inlined] [30] (::getfield(Observables, Symbol("#g#15")){getfield(AbstractPlotting, Symbol("##696#697")){Base.RefValue{Bool},Base.RefValue{AbstractPlotting.Mouse.Button},Base.RefValue{AbstractPlotting.Mouse.DragEnum},Events},Tuple{Observables.Observable{Tuple{Float64,Float64}},Observables.Observable{Set{AbstractPlotting.Mouse.Button}}}})(::Tuple{Float64,Float64}) at /home/jjsermor/.julia/packages/Observables/qCJWB/src/Observables.jl:136 [31] #setindex!#1(::getfield(Observables, Symbol("##2#4")), ::Function, ::Observables.Observable{Tuple{Float64,Float64}}, ::Tuple{Float64,Float64}) at /home/jjsermor/.julia/packages/Observables/qCJWB/src/Observables.jl:87 [32] setindex! at /home/jjsermor/.julia/packages/Observables/qCJWB/src/Observables.jl:83 [inlined] [33] (::getfield(GLMakie, Symbol("#cursorposition#48")){Observables.Observable{Tuple{Float64,Float64}}})(::GLFW.Window, ::Float64, ::Float64) at /home/jjsermor/.julia/packages/GLMakie/5wmnA/src/events.jl:207 [34] _CursorPosCallbackWrapper(::GLFW.Window, ::Float64, ::Float64) at /home/jjsermor/.julia/packages/GLFW/e257h/src/callback.jl:43 [35] PollEvents at /home/jjsermor/.julia/packages/GLFW/e257h/src/glfw3.jl:585 [inlined] [36] #renderloop#36(::Float64, ::getfield(GLMakie, Symbol("##37#39")), ::Function, ::GLMakie.Screen) at /home/jjsermor/.julia/packages/GLMakie/5wmnA/src/rendering.jl:7 [37] renderloop(::GLMakie.Screen) at /home/jjsermor/.julia/packages/GLMakie/5wmnA/src/rendering.jl:2 [38] (::getfield(GLMakie, Symbol("##31#33")))() at ./task.jl:259

I am using this simple code:

using Makie
using Colors
timepoints = Array[]
 for i in 1:1000
      points=Point{3,Float32}[]
      for j in 1:i
         push!(points,Point3f0(rand(),rand(),rand()))
      end
      push!(timepoints,points)
 end
s1 = slider(collect(1:100))
currtpx=lift(s1[end][:value]) do idx
         timepoints[idx]
end
colors=lift(s1[end][:value]) do idx
        rand(idx)
end
scene2 = Scene()
hbox(meshscatter!(scene2,currtpx, camera=cam3d!, color=colors),s1)

If I use scatter! instead of meshscatter it works. However, I need to use meshscatter because I would like to plot some 3D geometries. Are observables working with meshscatter?

Thanks in advance

[lmarcon1]

@SimonDanisch?

[asinghvi17]

Observables don't work with meshscatter currently, because you can't change the mesh. I think that we had a workaround for that somewhere, or we could just delete the mesh and replot.

[SimonDanisch]

No, it's not about the mesh, changing that actually works (kinda ironic, since it seems more complicated)... Resizing the list of attributes per element doesn't work. You can pre allocate a larger array and then setting them to NaN or so should work...

[melioristic]

How can we delete the mesh and replot it? I am not sure whether this is about the meshplot or resizing of the elements. Any update here?