Colorbar
A Colorbar needs a colormap and a tuple of low/high limits. The colormap's axis will then span from low to high along the visual representation of the colormap. You can set ticks in a similar way to
Axis
.
Here's how you can create Colorbars manually.
using CairoMakie
fig = Figure()
Axis(fig[1, 1])
# vertical colorbars
Colorbar(fig[1, 2], limits = (0, 10), colormap = :viridis,
flipaxis = false)
Colorbar(fig[1, 3], limits = (0, 5),
colormap = cgrad(:Spectral, 5, categorical = true), size = 25)
Colorbar(fig[1, 4], limits = (-1, 1), colormap = :heat,
highclip = :cyan, lowclip = :red, label = "Temperature")
# horizontal colorbars
Colorbar(fig[2, 1], limits = (0, 10), colormap = :viridis,
vertical = false)
Colorbar(fig[3, 1], limits = (0, 5), size = 25,
colormap = cgrad(:Spectral, 5, categorical = true), vertical = false)
Colorbar(fig[4, 1], limits = (-1, 1), colormap = :heat,
label = "Temperature", vertical = false, flipaxis = false,
highclip = :cyan, lowclip = :red)
fig
If you pass a
plotobject
, a
heatmap
or
contourf
, the Colorbar is set up automatically such that it tracks these objects' relevant attributes like
colormap
,
colorrange
,
highclip
and
lowclip
. If you want to adjust these attributes afterwards, change them in the plot object, otherwise the Colorbar and the plot object will go out of sync.
using CairoMakie
xs = LinRange(0, 20, 50)
ys = LinRange(0, 15, 50)
zs = [cos(x) * sin(y) for x in xs, y in ys]
fig = Figure()
ax, hm = heatmap(fig[1, 1][1, 1], xs, ys, zs)
Colorbar(fig[1, 1][1, 2], hm)
ax, hm = heatmap(fig[1, 2][1, 1], xs, ys, zs, colormap = :grays,
colorrange = (-0.75, 0.75), highclip = :red, lowclip = :blue)
Colorbar(fig[1, 2][1, 2], hm)
ax, hm = contourf(fig[2, 1][1, 1], xs, ys, zs,
levels = -1:0.25:1, colormap = :heat)
Colorbar(fig[2, 1][1, 2], hm, ticks = -1:0.25:1)
ax, hm = contourf(fig[2, 2][1, 1], xs, ys, zs,
colormap = :Spectral, levels = [-1, -0.5, -0.25, 0, 0.25, 0.5, 1])
Colorbar(fig[2, 2][1, 2], hm, ticks = -1:0.25:1)
fig
These docs were autogenerated using Makie: v0.17.13, GLMakie: v0.6.13, CairoMakie: v0.8.13, WGLMakie: v0.6.13