A sunburst chart displays hierarchical data as concentric rings, where each ring represents a level in the hierarchy. Inner rings show parent categories while outer rings show their children, with segment angles proportional to values. This radial visualization excels at revealing hierarchical structures and part-to-whole relationships across multiple levels simultaneously.
# anyplot.ai
# sunburst-basic: Basic Sunburst Chart
# Library: makie 0.21.9 | Julia 1.11.9
# Quality: 93/100 | Created: 2026-07-26
using CairoMakie
using Colors
# --- Theme tokens -------------------------------------------------------------
const THEME = get(ENV, "ANYPLOT_THEME", "light")
const PAGE_BG = THEME == "light" ? colorant"#FAF8F1" : colorant"#1A1A17"
const INK = THEME == "light" ? colorant"#1A1A17" : colorant"#F0EFE8"
const INK_SOFT = THEME == "light" ? colorant"#4A4A44" : colorant"#B8B7B0"
const IMPRINT_PALETTE = [
colorant"#009E73", colorant"#C475FD", colorant"#4467A3", colorant"#BD8233",
colorant"#AE3030", colorant"#2ABCCD", colorant"#954477", colorant"#99B314",
]
# --- Data: repository storage breakdown by directory (MB) ---------------------
# Source Code is broken down one level further into a grandchild ring; the
# other branches stop at 2 levels, which mirrors how real directory trees
# vary in depth (the spec allows 2-4 levels).
branches = [
("Source Code", [
("Core Engine", 420.0, [("Parser", 180.0), ("Renderer", 150.0), ("Optimizer", 90.0)]),
("API Layer", 180.0, [("REST", 100.0), ("GraphQL", 80.0)]),
("UI Components", 260.0, [("Components", 140.0), ("Hooks", 70.0), ("Styles", 50.0)]),
("Utilities", 90.0, [("Helpers", 50.0), ("Validators", 40.0)]),
]),
("Test Suite", [
("Unit Tests", 150.0, nothing),
("Integration Tests", 95.0, nothing),
("Fixtures", 40.0, nothing),
]),
("Assets", [
("Images", 320.0, nothing),
("Fonts", 15.0, nothing),
("Icons", 60.0, nothing),
]),
("Documentation", [
("User Guides", 45.0, nothing),
("API Reference", 70.0, nothing),
("Tutorials", 25.0, nothing),
]),
]
branch_totals = [sum(cval for (_, cval, _) in children) for (_, children) in branches]
grand_total = sum(branch_totals)
largest_leaf_name, largest_leaf_value = "", 0.0
for (_, children) in branches, (cname, cval, _) in children
if cval > largest_leaf_value
global largest_leaf_name, largest_leaf_value = cname, cval
end
end
# --- Figure --------------------------------------------------------------------
fig = Figure(
size = (1200, 1200),
fontsize = 14,
backgroundcolor = PAGE_BG,
)
title_str = "sunburst-basic · julia · makie · anyplot.ai"
ax = Axis(
fig[1, 1];
title = title_str,
titlesize = 20,
titlecolor = INK,
aspect = DataAspect(),
backgroundcolor = PAGE_BG,
)
hidedecorations!(ax)
hidespines!(ax)
r_hole = 0.24
r1 = 0.52 # branch ring outer / child ring inner
r2 = 0.78 # child ring outer / grandchild ring inner
r_outer = 1.00 # grandchild ring outer (only where a child has grandchildren)
n_arc = 48
stroke_w = 1.5
legend_elems = PolyElement[]
legend_labels = String[]
theta = 0.0
for (i, (name, children)) in enumerate(branches)
global theta
branch_color = IMPRINT_PALETTE[i]
span = 2π * branch_totals[i] / grand_total
outer_pts = [Point2f(r1 * cos(t), r1 * sin(t)) for t in range(theta, theta + span; length = n_arc)]
inner_pts = [Point2f(r_hole * cos(t), r_hole * sin(t)) for t in range(theta + span, theta; length = n_arc)]
poly!(ax, vcat(outer_pts, inner_pts); color = branch_color, strokecolor = PAGE_BG, strokewidth = stroke_w)
push!(legend_elems, PolyElement(color = branch_color))
push!(legend_labels, "$(name) · $(round(Int, branch_totals[i])) MB")
branch_lum = 0.299 * Float64(red(branch_color)) + 0.587 * Float64(green(branch_color)) + 0.114 * Float64(blue(branch_color))
branch_label_color = branch_lum > 0.55 ? colorant"#1A1A17" : colorant"#FAF8F1"
mid_angle = theta + span / 2
if span > deg2rad(14)
r_label = (r_hole + r1) / 2
rot = (mid_angle > π / 2 && mid_angle < 3π / 2) ? mid_angle + π : mid_angle
text!(ax, r_label * cos(mid_angle), r_label * sin(mid_angle);
text = name, rotation = rot, align = (:center, :center),
color = branch_label_color, fontsize = 15)
end
child_theta = theta
for (j, (cname, cval, grandchildren)) in enumerate(children)
cspan = span * cval / branch_totals[i]
child_hsl = HSL(branch_color)
child_l = clamp(child_hsl.l + 0.14 * j, 0.0, 0.92)
child_color = RGB(HSL(child_hsl.h, child_hsl.s, child_l))
c_outer = [Point2f(r2 * cos(t), r2 * sin(t)) for t in range(child_theta, child_theta + cspan; length = n_arc)]
c_inner = [Point2f(r1 * cos(t), r1 * sin(t)) for t in range(child_theta + cspan, child_theta; length = n_arc)]
poly!(ax, vcat(c_outer, c_inner); color = child_color, strokecolor = PAGE_BG, strokewidth = stroke_w)
child_lum = 0.299 * Float64(red(child_color)) + 0.587 * Float64(green(child_color)) + 0.114 * Float64(blue(child_color))
child_label_color = child_lum > 0.55 ? colorant"#1A1A17" : colorant"#FAF8F1"
cmid = child_theta + cspan / 2
is_largest = cname == largest_leaf_name
if cspan > deg2rad(10)
r_label = (r1 + r2) / 2
rot = (cmid > π / 2 && cmid < 3π / 2) ? cmid + π : cmid
text!(ax, r_label * cos(cmid), r_label * sin(cmid);
text = is_largest ? "$(cname) ★" : cname, rotation = rot, align = (:center, :center),
color = child_label_color, fontsize = is_largest ? 13 : 12)
end
if grandchildren !== nothing
gc_theta = child_theta
for (k, (gname, gval)) in enumerate(grandchildren)
gspan = cspan * gval / cval
gc_l = clamp(child_hsl.l + 0.12 * k + 0.06, 0.0, 0.95)
gc_color = RGB(HSL(child_hsl.h, child_hsl.s * 0.9, gc_l))
g_outer = [Point2f(r_outer * cos(t), r_outer * sin(t)) for t in range(gc_theta, gc_theta + gspan; length = n_arc)]
g_inner = [Point2f(r2 * cos(t), r2 * sin(t)) for t in range(gc_theta + gspan, gc_theta; length = n_arc)]
poly!(ax, vcat(g_outer, g_inner); color = gc_color, strokecolor = PAGE_BG, strokewidth = stroke_w)
gc_lum = 0.299 * Float64(red(gc_color)) + 0.587 * Float64(green(gc_color)) + 0.114 * Float64(blue(gc_color))
gc_label_color = gc_lum > 0.55 ? colorant"#1A1A17" : colorant"#FAF8F1"
gmid = gc_theta + gspan / 2
if gspan > deg2rad(8)
r_label = (r2 + r_outer) / 2
rot = (gmid > π / 2 && gmid < 3π / 2) ? gmid + π : gmid
text!(ax, r_label * cos(gmid), r_label * sin(gmid);
text = gname, rotation = rot, align = (:center, :center),
color = gc_label_color, fontsize = 10)
end
gc_theta += gspan
end
end
child_theta += cspan
end
theta += span
end
# --- Center focal point: grand total, as a storytelling anchor ----------------
text!(ax, 0.0, 0.055; text = "TOTAL", align = (:center, :center), color = INK_SOFT, fontsize = 11)
text!(ax, 0.0, -0.06; text = "$(round(Int, grand_total)) MB", align = (:center, :center), color = INK, fontsize = 17)
# --- Inset legend: branch totals, doubling as a Makie GridLayout value table --
Legend(
fig[1, 1], legend_elems, legend_labels;
tellwidth = false, tellheight = false,
halign = :right, valign = :top,
margin = (10, 10, 10, 10),
framevisible = false, backgroundcolor = :transparent,
labelcolor = INK_SOFT, labelsize = 11, patchsize = (12, 12), rowgap = 2,
)
xlims!(ax, -1.15, 1.15)
ylims!(ax, -1.15, 1.15)
# --- Save ------------------------------------------------------------------
save("plot-$(THEME).png", fig; px_per_unit = 2)
Part of Basic Sunburst Chart on anyplot.ai.