I asked how to plot some text at an arbitrary position in a Figure in
this thread . The simplest answer was to plot the text using the coordinates of fig.scene.
Then, my question here is, does a GridLayout has its own coordinate system?
Below is a sample image and the program that generates it. I want to add a piece of text to annotate the colorbar, but I don’t want to use fig.scene because the function that plots the contourf + colorbar is used as stand-alone or in a different layout.
Colorbar(... label = "...") is an option, except that the positioning of the label is (or seems to be) quite limited. I’d like to utilize the space right above the topmost numeric label of the colorbar.
using CairoMakie
"""
Contourf and colorbar.
[row,col] is for colorbar.
"""
function plot_xymap!(ax, gridlo, row, col, xs, ys, arr; asp)
ax.xlabel="x"; ax.ylabel="y"
co = contourf!(ax, xs, ys, arr)
Colorbar(gridlo[row,col], co)
rowsize!(gridlo, row, Aspect(1,1/asp))
# text!(gridlo.scene, # <- Doesn't exist.
# Point3f(0.9, 0.78, 3),
# text="[units]", space=:relative)
end
function plot_xsect!(ax, xs, vec)
ax.xlabel="x"; ax.ylabel="y"
lines!(ax, xs, vec)
end
function plot_ysect!(ax, ys, vec)
ax.ylabel="y"; ax.yaxisposition = :right
lines!(ax, vec, ys)
end
xwid = 200
ywid = 100
func(x,y) = cos(2π*x/xwid) * sin(2π*y/ywid)
xs = 0:10:xwid
ys = 0:10:ywid
arr2d = func.(xs, reshape(ys,1,:))
xsect = arr2d[:,5]
ysect = arr2d[5,:]
fig = Figure()
ga = fig[1,1] = GridLayout()
axtop = Axis(ga[1,1])
axmain = Axis(ga[2,1])
axright = Axis(ga[2,3]) # skip Col 2 for the colorbar.
asp = xwid/ywid
graph_height = 0.6 # relative to the y-axis length
rowsize!(ga, 1, Aspect(1, graph_height/asp))
axright.aspect = graph_height
colsize!(ga, 3, Relative(0.25))
rowgap!(ga, 10)
linkxaxes!(axmain, axtop)
linkyaxes!(axmain, axright)
plot_xsect!(axtop, xs, xsect)
plot_ysect!(axright, ys, ysect)
plot_xymap!(axmain, ga, 2, 2, xs, ys, arr2d, asp = asp)
Box(ga[2,3], color = (:red, 0.2), strokewidth = 0)
save("tmp.png", fig)
