and change it to something like:
```Julia
function mycam2d!(scene::SceneLike; kw_args...)
cam_attributes, rest = merged_get!(:cam2d, scene, Attributes(kw_args)) do
Theme(
area = Signal(FRect(0, 0, 1, 1), name = "area"),
zoomspeed = 0.10f0,
zoombutton = nothing,
panbutton = Mouse.right,
selectionbutton = (Keyboard.space, Mouse.left),
padding = 0.001
)
end
cam = from_dict(Camera2D, cam_attributes)
# remove previously connected camera
disconnect!(camera(scene))
my_zoom!(scene, cam) # add your own zoom
add_pan!(scene, cam)
correct_ratio!(scene, cam)
selection_rect!(scene, cam, cam_attributes[:selectionbutton])
cameracontrols!(scene, cam)
cam
end
```
I hope the code in the file will help to write `my_zoom`
---
### Author:  [@piever](https://discourse.julialang.org/u/piever)
#### Post date: [September 3, 2018, 8:34am UTC](https://discourse.julialang.org/t/makie-jl-mouse-interaction-question-discussion/14396/4 "2018-09-03T08:34:49Z")
I’m not sure how one would do this, but another common (and IMO useful) zoom for 2D plots is the “box zoom”: the user draws a rectangular box around the region of interest (by left clicking and dragging) and that region expands to take the whole space. Double-clicking brings it back to the original state: see Plotly for an example implementation. Not sure how easy/hard this is to implement and whether it should be a opt-in or default behavior (I tend to think this kind of things should be easy to access / default, as only advanced users will write code to customize mouse interaction).
---
### Author:  [@sdanisch](https://discourse.julialang.org/u/sdanisch)
#### Post date: [September 3, 2018, 8:39am UTC](https://discourse.julialang.org/t/makie-jl-mouse-interaction-question-discussion/14396/5 "2018-09-03T08:39:42Z")
That’s already implemented:
> selectionbutton = (Keyboard.space, Mouse.left)
and I do hope I wrote it in a way that it’s easily customizable… After all the camera is basically also just a recipe, which can be swapped out with your own code building up on the existing camera building blocks!
---
### Author:  [@piever](https://discourse.julialang.org/u/piever)
#### Post date: [September 3, 2018, 8:53am UTC](https://discourse.julialang.org/t/makie-jl-mouse-interaction-question-discussion/14396/6 "2018-09-03T08:53:47Z")
Cool! Just two remarks:
- I think the “box zoom” code still needs some updating, I’m on master of AbstractPlotting and I get:
```julia
MethodError: no method matching ntuple(::getfield(AbstractPlotting, Symbol("##191#192")){Vec{2,Float32}}, ::Type{Val{2}})
Closest candidates are:
ntuple(::F, ::Integer) where F at tuple.jl:133
ntuple(::Any, ::Val{0}) at tuple.jl:155
ntuple(::Any, ::Val{1}) at tuple.jl:156
...
absrect(::GeometryTypes.HyperRectangle{2,Float32}) at /home/pietro/.julia/packages/AbstractPlotting/ZHerD/src/camera/camera2d.jl:143 31 2.8k 3d
Julia for live control of USB3.0 camera and DAC/ADC boards, with GUI? 1 Usage 11 208 5d
Too many ways to do the same thing in Julia 1 Usage 16 643 9d
Is it possible to override keyword arguments for specific types? 2
question
Usage 7 158 10d
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sdanisch
Cool! Just two remarks:
I think the “box zoom” code still needs some updating, I’m on master of AbstractPlotting and I get:
MethodError: no method matching ntuple(::getfield(AbstractPlotting, Symbol("##191#192")){Vec{2,Float32}}, ::Type{Val{2}})
Closest candidates are:
ntuple(::F, ::Integer) where F at tuple.jl:133
ntuple(::Any, ::Val{0}) at tuple.jl:155
ntuple(::Any, ::Val{1}) at tuple.jl:156
...
absrect(::GeometryTypes.HyperRectangle{2,Float32}) at /home/pietro/.julia/packages/AbstractPlotting/ZHerD/src/camera/camera2d.jl:143
```
- I think it’s important to have this easily customizable, esp. in the case of touch pad users. On many laptops there is a mechanism to block touch pad when typing so `Space + Mouse Left` is effectively disabled
---
### Author:  [@sdanisch](https://discourse.julialang.org/u/sdanisch)
#### Post date: [September 3, 2018, 8:56am UTC](https://discourse.julialang.org/t/makie-jl-mouse-interaction-question-discussion/14396/7 "2018-09-03T08:56:24Z")
> - I think it’s important to have this easily customizable, esp. in the case of touch pad users. On many laptops there is a mechanism to block touch pad when typing so `Space + Mouse Left` is effectively disabled
That’s why you can just change it 😛 It’s even themeable, so you can change it globally!
---
### Author:  [@piever](https://discourse.julialang.org/u/piever)
#### Post date: [September 3, 2018, 9:07am UTC](https://discourse.julialang.org/t/makie-jl-mouse-interaction-question-discussion/14396/8 "2018-09-03T09:07:59Z")
This is really cool, I’m slowly wrapping my head around it. [Here](https://github.com/JuliaPlots/AbstractPlotting.jl/pull/9) is the PR to fix the behavior on Julia 1.0.
I tried `scatter(rand(100), rand(100), selectionbutton=Mouse.left)` but it doesn’t work, what’s the correct way to do this?
---
### Author:  [@sdanisch](https://discourse.julialang.org/u/sdanisch)
#### Post date: [September 3, 2018, 9:13am UTC](https://discourse.julialang.org/t/makie-jl-mouse-interaction-question-discussion/14396/9 "2018-09-03T09:13:05Z")
ah, I don’t pass through the attributes:
[https://github.com/JuliaPlots/AbstractPlotting.jl/blob/master/src/basic\_recipes/basic\_recipes.jl#L400](https://github.com/JuliaPlots/AbstractPlotting.jl/blob/master/src/basic_recipes/basic_recipes.jl#L400)
But otherwise, this should be how it works:
```nohighlight
scatter(rand(100), rand(100), cam2d = NT(selectionbutton=Mouse.left))
```
I should remove the NT and just use NamedTuples on 1.0!
---
### Author:  [@piever](https://discourse.julialang.org/u/piever)
#### Post date: [September 3, 2018, 9:25am UTC](https://discourse.julialang.org/t/makie-jl-mouse-interaction-question-discussion/14396/10 "2018-09-03T09:25:21Z")
Mhm, still doesn’t work:
```julia
julia> p = scatter(rand(100), rand(100), cam2d = NT(selectionbutton=Mouse.left))
julia> p.theme[:cam2d].attributes
Dict{Symbol,Reactive.Signal} with 6 entries:
:padding => 5422: "padding" = 0.001 Any
:selectionbutton => 5421: "selectionbutton" = (space::Button = 32, left::Button = 0) Any
:zoomspeed => 5418: "zoomspeed" = 0.1 Any
:panbutton => 5420: "panbutton" = right Any
:area => 5417: "area" = GeometryTypes.HyperRectangle{2,Float32}(Float32[0.0, 0.0], Float32[1.0, 1.0]) Any
:zoombutton => 5419: "zoombutton" = nothing Any
```
But if I change it manually it works:
`p.theme[:cam2d][:selectionbutton] = Mouse.left`
But I think as soon as this is figured out, it definitely deserves a section in the docs, it’s really nice to be able to define custom interactive behavior at the single plot level or globally with a theme.
---
### Author:  [@piever](https://discourse.julialang.org/u/piever)
#### Post date: [September 3, 2018, 9:29am UTC](https://discourse.julialang.org/t/makie-jl-mouse-interaction-question-discussion/14396/11 "2018-09-03T09:29:12Z")
Oh, and a last thing: did you also implement a “reset button” to go back to the original plot size?
Sorry for the many questions but I’m getting really excited about the possibilities Makie offers.
---
### Author:  [@sdanisch](https://discourse.julialang.org/u/sdanisch)
#### Post date: [September 3, 2018, 9:30am UTC](https://discourse.julialang.org/t/makie-jl-mouse-interaction-question-discussion/14396/12 "2018-09-03T09:30:23Z")
> [@piever](#):
>
> Mhm, still doesn’t work:
Me:
> ah, I don’t pass through the attributes:
What I meant is, that `scatter(rand(100), rand(100), cam2d = NT(selectionbutton=Mouse.left))` currently doesn’t work!
> "reset button” to go back to the original plot size?
Ah no, that is missing but should be easy to implement!