Histograms r,g,b colors on image
julia
using CairoMakie
import TestImages, Images
# example by @cormullion
function image_histogram()
img = TestImages.testimage("lighthouse")
reds = vec(float.(Images.red.(img)))
greens = vec(float.(Images.green.(img)))
blues = vec(float.(Images.blue.(img)))
fig = Figure(; size = (1200,400))
ax1 = Axis(fig[1, 1], aspect = DataAspect())
ax2 = Axis(fig[1, 2])
for (i, col) = enumerate([:red, :green, :blue])
hist!(ax2, (reds, greens, blues)[i];
scale_to=-0.6,
bins=60,
offset=i,
direction=:x,
color=(col, 0.85)
)
end
image!(ax1, rotr90(img))
hidedecorations!(ax1)
hidespines!(ax1)
fig
end
fig = with_theme(image_histogram, theme_ggplot2())
Downloading artifact: images