Heatmap with mousepicking no axis markings and labels

Specific Domains Visualization
1

I output a heatmap, points and lines, to a scene in order to allow mouse interactions similar to this example.

http://juliaplots.org/MakieReferenceImages/gallery//mouse_picking/index.html

However contrary to the example documentation no axis markings and labels appear. What to do, to get them?

My version of the sample:

import Pkg; Pkg.add("GLMakie"); using GLMakie

img = rand(100, 100)
scene = Scene(resolution = (500, 500))
# , scale_plot = false
heatmap!(scene, img)
clicks = Node(Point2f0[(0,0)])
#on(scene.events.mousebuttons) do buttons
on(scene.events.mousebutton) do buttons
     if ispressed(scene, Mouse.left)
          pos = to_world(scene,  Point2f0(scene.events.mouseposition[]))
         clicks[] = push!(clicks[], pos)
     end
     return
end
scatter!(scene, clicks, color = :red, marker = '+', markersize = 10)
# Do not execute beyond this point!
RecordEvents(scene, "output")
2

That juliaplots.org site is very old, nowadays Scene doesn’t usually carry around its own axis anymore. Have a look at the actual documentation here: Observables & Interaction · Makie

3

Great thanks Jules,

my present version of the sample:

import Pkg; Pkg.add(“GLMakie”); using GLMakie

img = rand(1000, 1000)
fig, ax = heatmap(img)

Makie.deactivate_interaction!(ax, :rectanglezoom)
spoint = select_point(ax.scene, marker = :circle)
clicks = Observable(Point2f)

on(spoint) do spoint
push!(clicks, spoint)
scatter!(ax, clicks, color = :gray, strokecolor = :red, strokewidth = 10)
lines!(ax, clicks, color = :red, strokecolor = :red, linewidth = 5)
end

fig