# Makie title and xlabel weirdness

**URL:** <https://discourse.julialang.org/t/makie-title-and-xlabel-weirdness/82578>\
**Category:** General Usage\
**Tags:** makie, glmakie\
**Created:** [June 10, 2022, 6:30pm UTC](https://discourse.julialang.org/t/makie-title-and-xlabel-weirdness/82578 "2022-06-10T18:30:14Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![cmarcotte](https://avatars.discourse-cdn.com/v4/letter/c/a3d4f5/32.png) [@cmarcotte](https://discourse.julialang.org/u/cmarcotte)\
**Post date:** [June 10, 2022, 6:30pm UTC](https://discourse.julialang.org/t/makie-title-and-xlabel-weirdness/82578/1 "2022-06-10T18:30:14Z")

</div>

I have a question about why the approach to making a supertitle and updating it works in the first instance with the volume plots, but not in the second instance with the heatmaps?  
In both cases, I create the new `fig[0,:]` axis implicitly and set a `LaTeXString` for it. For the volume plot it works beautifully, both at creation and for updating, while for the heatmaps it crashes with something inscrutable (hidden below for clarity). To be clear, the actual field rendering using `volume` and `heatmap` are correct and update correctly (data load / reassignment omitted), it’s just the ways in which labels and titles interact with the figures.

Bonus points if you know why the ternary operator for generating `LaTeXString`s `xlabel`s only on the last row of the heatmap axes does not work. It seems very strange.

Original code:

> ****
>
> ```julia
> using GLMakie
> 
> times = 0:100
> x = rand(Float32,200,200,50,3);
> 	
> U = Observable(x[:,:,:,1])
> V = Observable(x[:,:,:,2])
> W = Observable(x[:,:,:,3])
> 
> fig = Figure(resolution = (1600, 600))
> axs = [Axis3(fig[1,i], aspect=:data, elevation=0.75, azimuth=2.65, perspectiveness=0.2) for i in 1:3]
> volume!(axs[1],U,algorithm=:mip,colormap="Oranges",alpha=0.05,transparence=true)
> volume!(axs[2],V,algorithm=:mip,colormap="Purples",alpha=0.05,transparence=true)
> volume!(axs[3],W,algorithm=:mip,colormap="Greens",alpha=0.05,transparence=true)
> for ax in axs
> hidedecorations!(ax)
> end
> Colorbar(fig[2,1]; vertical = false, flipaxis = false, colorrange=(0,1), colormap="Oranges", label=L"$u$")
> Colorbar(fig[2,2]; vertical = false, flipaxis = false, colorrange=(0,1), colormap="Purples", label=L"$v$")
> Colorbar(fig[2,3]; vertical = false, flipaxis = false, colorrange=(0,1), colormap="Greens", label=L"$w$")
> tit = Label(fig[0, :], text = L"$t = 0$ [ms]", textsize = 32)
> resize_to_layout!(fig)
> 
> record(fig, "./volumeMakie.mp4", times; framerate=20) do t
> # update data here
> tit.text[] = L"$t = %$(2.0*t)$ [ms]"
> end
> 
> Zs = [1,10,20,30,40,50]
> us = [Observable(x[:,:,z,1]) for z in Zs]
> vs = [Observable(x[:,:,z,2]) for z in Zs]
> ws = [Observable(x[:,:,z,3]) for z in Zs]
> 
> fig = Figure(resolution = (1450, 750))
> axs = [Axis3(fig[i, j], width = 200, height = 200, #=xlabel=(i==3 ? L"$z = Zs[j]*0.02$ [cm]" : nothing =#) for i in 1:3, j in 1:length(Zs) ]
> 
> for ax in axs
> hidedecorations!(ax)
> end
> 	
> for j in 1:length(Zs)
> heatmap!(axs[1,j],us[j],colormap="Oranges",colorrange=(0,1))
> heatmap!(axs[2,j],vs[j],colormap="Purples",colorrange=(0,1))
> heatmap!(axs[3,j],ws[j],colormap="Greens", colorrange=(0,1))
> end
> Colorbar(fig[1,length(Zs)+1]; colorrange=(0,1), colormap="Oranges", label=L"u")
> Colorbar(fig[2,length(Zs)+1]; colorrange=(0,1), colormap="Purples", label=L"v")
> Colorbar(fig[3,length(Zs)+1]; colorrange=(0,1), colormap="Greens", label=L"w")
> tit = Label(fig[0,:], text = L"$t = 0$ [ms]", textsize = 32)
> resize_to_layout!(fig)
> 
> record(fig, "heatmapsMakie.mp4", times; framerate=10) do t
> # update data here
> tit.text[] = L"$t = %$(2.0*t)$ [ms]"
> end
> 
> ```

Error:

> ****
>
> ```julia
> ERROR: BoundsError: attempt to access 4-element Vector{Float32} at index [0]
> Stacktrace:
> [1] getindex
> @ ./array.jl:861 [inlined]
> [2] dirgaps(gl::GridLayout, dir::GridLayoutBase.Row)
> @ GridLayoutBase ~/.julia/packages/GridLayoutBase/ZQ2p1/src/gridlayout.jl:1008
> [3] determinedirsize(gl::GridLayout, gdir::GridLayoutBase.Row)
> @ GridLayoutBase ~/.julia/packages/GridLayoutBase/ZQ2p1/src/gridlayout.jl:1041
> [4] update!(gl::GridLayout)
> @ GridLayoutBase ~/.julia/packages/GridLayoutBase/ZQ2p1/src/gridlayout.jl:128
> [5] add_to_gridlayout!
> @ ~/.julia/packages/GridLayoutBase/ZQ2p1/src/gridlayout.jl:229 [inlined]
> [6] add_content!(g::GridLayout, content::Label, rows::UnitRange{Int64}, cols::UnitRange{Int64}, side::GridLayoutBase.Inner)
> @ GridLayoutBase ~/.julia/packages/GridLayoutBase/ZQ2p1/src/gridlayout.jl:1454
> [7] setindex!(g::GridLayout, content::Label, rows::UnitRange{Int64}, cols::UnitRange{Int64}, side::GridLayoutBase.Inner)
> @ GridLayoutBase ~/.julia/packages/GridLayoutBase/ZQ2p1/src/gridlayout.jl:1341
> [8] setindex!(gp::GridPosition, element::Label)
> @ GridLayoutBase ~/.julia/packages/GridLayoutBase/ZQ2p1/src/gridlayout.jl:1487
> [9] _block(::Type{Label}, ::GridPosition; kwargs::Base.Pairs{Symbol, Any, Tuple{Symbol, Symbol}, NamedTuple{(:text, :textsize), Tuple{LaTeXStrings.LaTeXString, Int64}}})
> @ Makie.MakieLayout ~/.julia/packages/Makie/fEZv2/src/makielayout/blocks.jl:284
> [10] #_#38
> @ ~/.julia/packages/Makie/fEZv2/src/makielayout/blocks.jl:269 [inlined]
> [11] top-level scope
> @ REPL[29]:1
> 
> ```

---

<div class="post-metadata">

**Author:** ![jules](https://avatars.discourse-cdn.com/v4/letter/j/41988e/32.png) [@jules](https://discourse.julialang.org/u/jules)\
**Post date:** [June 10, 2022, 9:17pm UTC](https://discourse.julialang.org/t/makie-title-and-xlabel-weirdness/82578/2 "2022-06-10T21:17:51Z")

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Can you make sure to run `]up` to get the latest version of GridLayoutBase? I fixed this bug the other day

---

<div class="post-metadata">

**Author:** ![cmarcotte](https://avatars.discourse-cdn.com/v4/letter/c/a3d4f5/32.png) [@cmarcotte](https://discourse.julialang.org/u/cmarcotte)\
**Post date:** [June 10, 2022, 10:06pm UTC](https://discourse.julialang.org/t/makie-title-and-xlabel-weirdness/82578/3 "2022-06-10T22:06:22Z")

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Oh that’s great, thank you!