# Makie: get 3D axis limits
**URL:** https://discourse.julialang.org/t/makie-get-3d-axis-limits/94024
**Category:** General Usage
**Tags:** plotting, makie
**Created:** [February 3, 2023, 10:40pm UTC](https://discourse.julialang.org/t/makie-get-3d-axis-limits/94024 "2023-02-03T22:40:07Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@Jollywatt](https://discourse.julialang.org/u/Jollywatt)
#### Post date: [February 3, 2023, 10:40pm UTC](https://discourse.julialang.org/t/makie-get-3d-axis-limits/94024/1 "2023-02-03T22:40:07Z")
Hi,
I can’t for the life of me find I way to retrieve the current axis limits for 3D Makie plots.
I can’t even find I nice way to do this for 2D plots, though you can get there with a lot of effort:
```julia
julia> scatter(randn(2, 100))
julia> function projview_to_2d_limits(pv)
xlim = minmax((((-1, 1) .- pv[1, 4]) ./ pv[1, 1])...)
ylim = minmax((((-1, 1) .- pv[2, 4]) ./ pv[2, 2])...)
xlim, ylim
end
projview_to_2d_limits (generic function with 1 method)
julia> projview_to_2d_limits(current_axis().scene.camera.projectionview[])
((-3.1745217f0, 3.1172993f0), (-2.965359f0, 3.0535767f0))
```
Any ideas? This strikes me as elementary. I expected there to be functions like [`xlims()`](https://docs.juliaplots.org/stable/api/#Plots.xlims) to complement `xlims!(xmin, xmax)` like in `Plots.jl`.
* * *
The reason I’m wanting to do this is to plot some infinite lines of the form ax + by + cz = 0. I’m doing this by finding two points on either side of the view limits and connecting them with a line segment.
---
### Author:  [@aramirezreyes](https://discourse.julialang.org/u/aramirezreyes)
#### Post date: [February 3, 2023, 10:48pm UTC](https://discourse.julialang.org/t/makie-get-3d-axis-limits/94024/2 "2023-02-03T22:48:56Z")
For 2D it seems like this works:
```julia
julia> using GLMakie
julia> fig,ax = scatter(rand(10))
julia> ax.yaxis.attributes.limits[]
(-0.03870934f0, 0.95527744f0)
julia> ax.xaxis.attributes.limits[]
(0.55f0, 10.45f0)
```
3D axis are a mystery to me
---
### Author:  [@Jollywatt](https://discourse.julialang.org/u/Jollywatt)
#### Post date: [February 4, 2023, 12:13am UTC](https://discourse.julialang.org/t/makie-get-3d-axis-limits/94024/3 "2023-02-04T00:13:07Z")
Another piece of the puzzle: after much digging I’ve found what looks like the current `LScene`’s limits cuboid:
```julia
julia> scatter([(-1, -2, -3), (1, 2, 3)])
julia> current_axis().scene.plots[1].input_args[1][]
GeometryBasics.HyperRectangle{3, Float32}(Float32[-1.0, -2.0, -3.0], Float32[2.0, 4.0, 6.0])
julia> [ans.origin ans.widths]
3×2 StaticArraysCore.SMatrix{3, 2, Float32, 6} with indices SOneTo(3)×SOneTo(2):
-1.0 2.0
-2.0 4.0
-3.0 6.0
```
I think this only works for `LScene` axis types, not `Axis3`, and it assumes that the plot at index `1` is the `<:Combined{Makie.axis3d}` which carries view limits data. Not sure if this can be relied on.
---
### Author:  [@Jollywatt](https://discourse.julialang.org/u/Jollywatt)
#### Post date: [February 4, 2023, 12:35am UTC](https://discourse.julialang.org/t/makie-get-3d-axis-limits/94024/4 "2023-02-04T00:35:05Z")
And another piece!
For `Axis3` plots, there’s the `finallimits` property:
```julia
julia> fig = Figure(); Axis3(fig[1,1]);
julia> scatter!([(-1,-2,-3), (1, 2, 3)])
julia> current_axis().finallimits[]
GeometryBasics.HyperRectangle{3, Float32}(Float32[-1.1, -2.2, -3.3], Float32[2.2, 4.4, 6.6])
julia> [ans.origin ans.widths]
3×2 StaticArraysCore.SMatrix{3, 2, Float32, 6} with indices SOneTo(3)×SOneTo(2):
-1.1 2.2
-2.2 4.4
-3.3 6.6
```
I’ve almost solved it. I just need to consolidate these different pieces together into something reliable…
---
### Author:  [@ffreyer](https://discourse.julialang.org/u/ffreyer)
#### Post date: [February 5, 2023, 11:18am UTC](https://discourse.julialang.org/t/makie-get-3d-axis-limits/94024/5 "2023-02-05T11:18:32Z")
For `Axis` and `Axis3`:
```julia
f, a, p = scatter(rand(Point2f, 10))
a.finallimits[]
```
For `LScene` (or `Scene`) limits/bounding boxes aren’t kept around anymore, but you can grab eyeposition, lookat and upvector from the camera:
```julia
f, a, p = scatter(rand(Point3f, 10))
Makie.camera_controls(p).eyeposition
```
Alternatively you can copy this to get the bounding box the camera uses as a base [Makie.jl/scenes.jl at 156e651ffd1b20eed3f511f925c1e8ac4eed1474 · MakieOrg/Makie.jl · GitHub](https://github.com/MakieOrg/Makie.jl/blob/156e651ffd1b20eed3f511f925c1e8ac4eed1474/src/scenes.jl#L518-522). (Use `Makie.parent_scene(p)` or `a.blockscene.children[1]` as the scene here.) This is the combined bounding box of plots though, which might be quite different from your current view (due to zooming and translation).