Observable to adjust colorbar height crashes with GeoMakie but not GLMakie
#135
Comments
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I seem to slip up with the same gotcha every time I do prototypes: don't use If I use julia> using GeoMakie, GLMakie
julia> fig = Figure()
julia> ga = GeoAxis(fig[1,1]);
julia> sf = surface!(ga, -180:180, -90:90, rand(361, 181));
julia> Colorbar(fig[1,2], sf, height = @lift Fixed($(pixelarea(ga.scene)).widths[2]))the code doesn't crash, but it is made very very small: If I try to use the projection julia> fig = Figure()
julia> ga = GeoAxis(fig[1,1]; dest = "+proj=eqc");
julia> sf = surface!(ga, -180:180, -90:90, rand(361, 181));
julia> Colorbar(fig[1,2], sf, height = @lift Fixed($(pixelarea(ga.scene)).widths[2]))
ERROR: StackOverflowError:
[...]the call to |
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With this code: julia> using GeoMakie, GLMakie
julia> fig = Figure()
ga
julia> ga = GeoAxis(fig[1,1]; dest = "+proj=eqc");
julia> sf = surface!(ga, -180:180, -90:90, rand(361, 181));
julia> obs = @lift Fixed($(pixelarea(ga.scene)).widths[2])
Observable(Fixed(762.0f0))
# before this call, I resized the plot window with my cursor to make it bigger
julia> obs
Observable(Fixed(1154.0f0))
# Adding a fixed-size colorbar (with default height) usually works
julia> Colorbar(fig[1,2], sf);
julia> Colorbar(fig[1,3], sf, height = obs)
ERROR: StackOverflowError:
[...]I was once able to get the resizing to work, but now I am unable to reproduce that, and I get |
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I have a very rudimentary understanding of julia> fig = Figure()
julia> ga = GeoAxis(fig[1,1]; dest = "+proj=eqc");
# julia> ga = GeoAxis(fig[1,1]) # works with default projection too
julia> obs = @lift Fixed($(pixelarea(ga.scene)).widths[2]) # fetch plot height
Observable(Fixed(362.0f0))
# This is not needed for fixing the Colorbar, but shows the current figure height as an axis title -->
julia> tobs = @lift "figure height: $(string($obs)[7:end-3])" # dirty hack to get the number part of the string "Fixed(362.0f0)"
Observable("figure height: 362.0")
julia> ga.title[] = tobs.val # set initial title
"figure height: 362.0"
julia> on(tobs) do t # update title when plot pane is resized
ga.title = t
end
ObserverFunction defined at REPL[247]:2 operating on Observable("figure height: 361.0")
# <--
julia> sf = surface!(ga, -180:180, -90:90, rand(361, 181));
julia> rowsize!(fig.layout, 1, Auto(false)) # This is the critical part of the code
julia> Colorbar(fig[1,2], sf, height = obs)
Colorbar()The critical component is the call to
i.e.: The vertical size of the plot (≤ height of |
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Looking at the julia> using GeoMakie, GLMakie
julia> fig = Figure()
julia> ga = GeoAxis(fig[1,1])#; dest = "+proj=eqc");
julia> obs = @lift $(pixelarea(ga.scene)).widths[2]
# For title --->
julia> tobs = @lift "plot height: $($obs)"
julia> ga.title[] = tobs.val
julia> on(tobs) do t
ga.title = t
end
# <---
julia> sf = surface!(ga, -180:180, -90:90, rand(361, 181));
julia> rowsize!(fig.layout, 1, Auto(false)) # This is the critical part of the code
julia> Colorbar(fig[1,2], sf, height = obs)
A very similar code can be used to have a horizontal colorbar under the figure: See details for horizontal colorbarjulia> using GeoMakie, GLMakie
julia> fig = Figure()
julia> ga = GeoAxis(fig[1,1])#; dest = "+proj=eqc");
julia> obs = @lift $(pixelarea(ga.scene)).widths[1] # fetch the first element of .widths instead of the second.
# For title --->
julia> tobs = @lift "plot width: $($obs)"
julia> ga.title[] = tobs.val
julia> on(tobs) do t
ga.title = t
end
# <---
julia> sf = surface!(ga, -180:180, -90:90, rand(361, 181));
julia> colsize!(fig.layout, 1, Auto(false)) # use colsize! instead of rowsize!
julia> Colorbar(fig[2,1], sf, vertical=false, width = obs) # set vertical to false, and specify width instead of height.
# set `flipaxis=false` to get ticks and ticklabels below colorbarresulting figure: |
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It looks like the approach from the initial post is now working!
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I am trying to make a colorbar for a plot that adjusts to the height of the figure. Following MakieOrg/Makie.jl#1874 (comment), with GLMakie I can do:
which produces the desired output:
However, if I do essentially the same with GeoMakie:
I get either this error:
ERROR: AssertionError: length(positions) == length(labels)
or this error:
ERROR: StackOverflowError:
OS details:
any suggestions?
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