WordCloud-Gallery

This is a gallery of WordCloud.jl, which is automatically generated from WordCloud.examples (WordCloud v0.12.2). Run evalfile("generate.jl", ["doeval=true", "exception=true"]) in julia REPL to create this file.

alice
animation1
animation2
benchmark
compare
compare2
custom
fromweb
gathering
highdensity
juliadoc
languages
lettermask
logo
nomask
outline
pattern
qianziwen
random
recolor
semantic
series
中文

alice

using WordCloud
wc = wordcloud(
    processtext(open(pkgdir(WordCloud) * "/res/alice.txt"), stopwords=WordCloud.stopwords_en ∪ ["said"]), 
    mask=pkgdir(WordCloud) * "/res/alice_mask.png",
	color="#faeef8",
    colors=:seaborn_dark,
    angles=(0, 90),
    density=0.55,
    spacing = 3,) |> generate!
println("results are saved to alice.png")
paint(wc, "alice.png", background=outline(wc.mask, color="purple", linewidth=4))
wc

animation1

This animation shows how the initial layout is generated.

using WordCloud
stopwords = WordCloud.stopwords_en ∪ ["said"]
textfile = pkgdir(WordCloud)*"/res/alice.txt"
wc = wordcloud(
    processtext(open(textfile), stopwords=stopwords, maxnum=300), 
    masksize = (300, 200),
    outline = 3,
    angles = 0:90,
    state = initialize!)

uniform style

gifdirectory = "animation1/uniform"
setpositions!(wc, :, (-1000,-1000))
@record gifdirectory overwrite=true filter=i->i%(2^(i÷100))==0 layout!(wc, style=:uniform)

gathering style

gifdirectory = "animation1/gathering"
setpositions!(wc, :, (-1000,-1000))
@record gifdirectory overwrite=true filter=i->i%(2^(i÷100))==0 layout!(wc, style=:gathering)

println("results are saved in animation1")
wc

animation2

This animation shows the process of fitting the layout.

using CSV
using DataFrames
using WordCloud

df = CSV.File(pkgdir(WordCloud) * "/res/guxiang_frequency.txt", header=false) |> DataFrame;
words = df[!, "Column2"]
weights = df[!, "Column3"]

wc = wordcloud(words, weights, density=0.5)
gifdirectory = "animation2"
@record gifdirectory overwrite=true generate!(wc, 100, optimiser=WordCloud.Momentum())
println("results are saved in animation2")
wc

benchmark

Test the performance of different trainers

using WordCloud
using Random
# Random.seed!(8)

println("This test will take several minutes.")
@show Threads.nthreads()
words = [Random.randstring(rand(1:8)) for i in 1:200]
weights = randexp(length(words)) .* 2000 .+ rand(20:100, length(words));
wc1 = wordcloud(words, weights, mask=shape(ellipse, 500, 500, color=0.15), masksize=:original, angles=(0, 90, 45))

words = [Random.randstring(rand(1:8)) for i in 1:400]
weights = randexp(length(words)) .* 2000 .+ rand(20:100, length(words));
wc2 = wordcloud(words, weights, mask=shape(ellipse, 500, 500, color=0.15), masksize=:original, angles=(0, 90, 45))

words = [Random.randstring(rand(1:8)) for i in 1:5000]
weights = randexp(length(words)) .* 2000 .+ rand(20:100, length(words));
wc3 = wordcloud(words, weights, mask=shape(box, 2000, 2000, cornerradius=100, color=0.15), masksize=:original, angles=(0, 90, 45))

wcs = [wc1, wc1, wc2, wc3] # repeat wc1 to trigger compiling
ts = [WordCloud.Stuffing.trainepoch_E!,WordCloud.Stuffing.trainepoch_EM!,
WordCloud.Stuffing.trainepoch_EM2!,WordCloud.Stuffing.trainepoch_EM3!,WordCloud.Stuffing.trainepoch_D!,
WordCloud.Stuffing.trainepoch_P!,WordCloud.Stuffing.trainepoch_P2!,WordCloud.Stuffing.trainepoch_Px!]
es = [[] for i in 1:length(wcs)]
for (i, wc) in enumerate(wcs)
    println("\n\n", "*"^10, "wordcloud - $(length(wc)) words on mask$(size(wc.mask))", "*"^10)
    i == 4 && deleteat!(ts, lastindex(ts)-2:lastindex(ts)) # too slow
    for (j, t) in enumerate(ts)
        println("\n", i - 1, "==== ", j, "/", length(ts), " ", nameof(t))
        layout!(wc, style=:uniform)
        @time e = @elapsed generate!(wc, trainer=t, retry=1)
        push!(es[i], "$(nameof(t)) - $(getparameter(wc, :epoch))" * (getstate(wc) == :generate! ? "✔ " : "✘ ") => e)
    end
end
println("SUMMARY")
for (i, (wc, e)) in enumerate(zip(wcs, es))
    println("##$(i - 1) $(length(wc))@$(size(wc.mask)):")
    println(repr("text/plain", e))
end

compare

First generate the wordcloud on the left

using WordCloud

stwords = ["us"];
println("==Obama's==")
cs = WordCloud.randomscheme() # :Set1_8
as = WordCloud.randomangles() # (0,90,45,-45)
fs = WordCloud.randomfonts()
dens = 0.45 # not too high
wca = wordcloud(
    processtext(open(pkgdir(WordCloud) * "/res/Barack Obama's First Inaugural Address.txt"), stopwords=WordCloud.stopwords_en ∪ stwords), 
    colors=cs,
    angles=as,
    density=dens,
    backgroundcolor=:maskcolor,
    fonts=fs,
    style=:uniform,
    ) |> generate!

Then generate the wordcloud on the right

println("==Trump's==")
wcb = wordcloud(
    processtext(open(pkgdir(WordCloud) * "/res/Donald Trump's Inaugural Address.txt"), stopwords=WordCloud.stopwords_en ∪ stwords),
    mask=getsvgmask(wca),
    masksize=:original,
    colors=cs,
    angles=as,
    density=dens,
    backgroundcolor=:maskcolor,
    maskcolor=getmaskcolor(wca),
    fonts=fs,
    state=identity, # disables the useless initialize! and layout! in advance
)

Follow these steps to generate a wordcloud: initialize! -> layout! -> generate!

samewords = getwords(wca) ∩ getwords(wcb)
println(length(samewords), " same words")

for w in samewords
    setcolors!(wcb, w, getcolors(wca, w))
    setangles!(wcb, w, getangles(wca, w))
    setfonts!(wcb, w, getfonts(wca, w))
end
initialize!(wcb)

println("=ignore defferent words=")
keep(wcb, samewords) do
    @assert Set(wcb.words) == Set(samewords)
    centers = getpositions(wca, samewords, mode=getcenter)
    setpositions!(wcb, samewords, centers, mode=setcenter!) # manually initialize the position,
    setstate!(wcb, :layout!) # and set the state flag
    generate!(wcb, 1000, reposition=false, retry=1) # disables repositioning; retry=1 means no rescale
end

println("=pin same words=")
pin(wcb, samewords) do
    layout!(wcb, style=:uniform)
    generate!(wcb, 1000, retry=1) # enables repositioning while disabling rescaling
end

if getstate(wcb) != :generate!
    println("=overall tuning=")
    generate!(wcb, 1000, reposition=setdiff(getwords(wcb), samewords), retry=2) # only reposition the unique words
end

ma = paint(wca)
mb = paint(wcb)
h, w = size(ma)
println("results are saved in address_compare")
WordCloud.save("address_compare/compare.png", [ma mb])
gif = WordCloud.GIF("address_compare")
WordCloud.frame(wca, "Obama") |> gif
WordCloud.frame(wcb, "Trump") |> gif
WordCloud.Render.generate(gif, framerate=1)
wca, wcb

compare2

This is a more symmetrical and accurate way to generate comparison wordclouds, but it may be more time consuming.

Prepare two wordcloud objects

using WordCloud

stwords = ["us"];
cs = WordCloud.randomscheme() # :Set1_8#
as = WordCloud.randomangles() # (0,90,45,-45)#
fs = WordCloud.randomfonts()
dens = 0.45 # not too high
wca = wordcloud(
    processtext(open(pkgdir(WordCloud) * "/res/Barack Obama's First Inaugural Address.txt"), stopwords=WordCloud.stopwords_en ∪ stwords), 
    colors=cs,
    angles=as,
    density=dens,
    backgroundcolor=:maskcolor,
    fonts=fs,
    state=identity, # turn off the initialize! and layout! in advance
)
wcb = wordcloud(
    processtext(open(pkgdir(WordCloud) * "/res/Donald Trump's Inaugural Address.txt"), stopwords=WordCloud.stopwords_en ∪ stwords),
    mask=getsvgmask(wca),
    masksize=:original,
    colors=cs,
    angles=as,
    density=dens,
    backgroundcolor=:maskcolor,
    maskcolor=getmaskcolor(wca),
    fonts=fs,
    state=identity, 
)

Make the same words the same style

samewords = getwords(wca) ∩ getwords(wcb)
println(length(samewords), " same words")
@assert !hasparameter(wca, :uniquewords)
@assert !hasparameter(wcb, :uniquewords)
setparameter!(wca, setdiff(getwords(wca), samewords), :uniquewords)
setparameter!(wcb, setdiff(getwords(wcb), samewords), :uniquewords)
for w in samewords
    setcolors!(wcb, w, getcolors(wca, w))
    setangles!(wcb, w, getangles(wca, w))
    setfonts!(wcb, w, getfonts(wca, w))
end

Put the same words at same position

initialize!(wca)
initialize!(wcb)
keep(wca, samewords) do
    layout!(wca, style=:uniform)
    fit!(wca, 1000)
end
pin(wca, samewords) do
    layout!(wca, style=:uniform) # place other words
end
centers = getpositions(wca, samewords, mode=getcenter)
setpositions!(wcb, samewords, centers, mode=setcenter!) # manually initialize the position,
pin(wcb, samewords) do
    layout!(wcb, style=:uniform) # place other words
end

Fit them all

function syncposition(samewords, pos, wca, wcb)
    pos2 = getpositions(wca, samewords, mode=getcenter)
    if pos != pos2
        setpositions!(wcb, samewords, pos2, mode=setcenter!)
        setstate!(wcb, :layout!)
    end
    pos2
end
function pinfit!(wc, samewords, ep1, ep2)
    pin(wc, samewords) do
        fit!(wc, ep1)
    end
    fit!(wc, ep2, reposition=getparameter(wc, :uniquewords)) # only reposition the unique words
end
pos = getpositions(wca, samewords, mode=getcenter)
while getparameter(wca, :epoch) < 2000 && getparameter(wcb, :epoch) < 2000
    global pos
    pinfit!(wca, samewords, 200, 50)
    pos = syncposition(samewords, pos, wca, wcb)
    pinfit!(wcb, samewords, 200, 50)
    pos = syncposition(samewords, pos, wcb, wca)
    if getstate(wca) == getstate(wcb) == :fit!
        break
    end
end
println("Takes $(getparameter(wca, :epoch)) and $(getparameter(wcb, :epoch)) epochs")
WordCloud.printcollisions(wca)
WordCloud.printcollisions(wcb)

ma = paint(wca)
mb = paint(wcb)
h, w = size(ma)
println("results are saved in address_compare2")
WordCloud.save("address_compare2/compare2.png", [ma mb])
gif = WordCloud.GIF("address_compare2")
WordCloud.frame(wca, "Obama") |> gif
WordCloud.frame(wcb, "Trump") |> gif
WordCloud.Render.generate(gif, framerate=1)
wca, wcb

custom

using WordCloud
wc = wordcloud(
    processtext(open(pkgdir(WordCloud) * "/res/alice.txt"), stopwords=WordCloud.stopwords_en ∪ ["said"], maxweight=1, maxnum=300), 
    # mask = pad(WordCloud.tobitmap(shape(ellipse, 600, 500, color=(0.98, 0.97, 0.99), backgroundcolor=0.97)), 0.1),
    mask=shape(ellipse, 600, 500, color=(0.98, 0.97, 0.99), backgroundcolor=0.97, backgroundsize=(700, 550)),
    masksize=:original,
    colors=:seaborn_icefire_gradient,
    angles=-90:90,
    state=identity, # turn off the useless initialize! and layout! in advance
)

setwords!(wc, "Alice", "Alice in Wonderland") # replace the word 'Alice' with 'Alice in Wonderland'
setangles!(wc, "Alice in Wonderland", 0) # make it horizontal
setcolors!(wc, "Alice in Wonderland", "purple");
setfontsizes!(wc, "Alice in Wonderland", size(wc.mask, 2) / length("Alice in Wonderland"))
initialize!(wc, "Alice in Wonderland")
r = size(wc.mask, 2) / size(getimages(wc, "Alice in Wonderland"), 2) * 0.95
setfontsizes!(wc, "Alice in Wonderland", r * size(wc.mask, 2) / length("Alice in Wonderland")) # set a big font size
initialize!(wc, "Alice in Wonderland") # init it after adjust it's style
setpositions!(wc, "Alice in Wonderland", reverse(size(wc.mask)) .÷ 2, mode=setcenter!) # center it

pin(wc, "Alice in Wonderland") do
    initialize!(wc) # init inside `pin` to reset the size of other words
    generate!(wc)
end

println("results are saved to custom.svg")
paint(wc, "custom.svg")
wc

fromweb

using WordCloud
using HTTP

url = "http://en.wikipedia.org/wiki/Special:random"
try
    resp = HTTP.request("GET", url, redirect=true)
    println(resp.request)
    content = resp.body |> String
    wc = wordcloud(content |> html2text |> processtext) |> generate!
    println("results are saved to fromweb.svg")
    paint(wc, "fromweb.svg")
    wc
catch e
    println(e)
end

gathering

By setting style=:gathering in the layout! function, larger words will be positioned closer to the center.

using WordCloud
wc = wordcloud(
    processtext(open(pkgdir(WordCloud) * "/res/alice.txt"), stopwords=WordCloud.stopwords_en ∪ ["said"]), 
    angles=0, density=0.55,
    mask=squircle, rt=2.5 * rand(),
    state=initialize!)
layout!(wc, style=:gathering, level=5, centralword=true)
pin(wc, "Alice") do # keep "Alice" in the center
    generate!(wc, reposition=0.7) # exclude the top 30% of words from repositioning
end
println("results are saved to gathering.svg")
paint(wc, "gathering.svg")
wc

highdensity

using WordCloud

In certain scenarios, there might be a need for generating a high-density output, and you might attempt to achieve it using the following code:

wc = wordcloud(
    processtext(open(pkgdir(WordCloud)*"/res/alice.txt"), stopwords=WordCloud.stopwords_en ∪ ["said"]), 
    mask = shape(box, 500, 400, cornerradius=10),
    colors = :Dark2_3,
    angles = (0, 90), # spacing = 2,
    density = 0.7) |> generate!
paint(wc, "highdensity.png")

However, there are situations where it fails to function as intended. This is mainly because the minimum gap between two words is set to 2 pixels, controlled by the spacing parameter of the wordcloud function.
In cases where the image is small, the cost of 2 pixels becomes relatively higher. To address this issue, you have the option to set spacing=0 or spacing=1. Alternatively, increasing the image size can also alleviate the issue.

wc = wordcloud(
    processtext(open(pkgdir(WordCloud) * "/res/alice.txt"), stopwords=WordCloud.stopwords_en ∪ ["said"]), 
    mask=shape(box, 500 * 2, 400 * 2, cornerradius=10 * 2),
    masksize=:original,
    colors=:Dark2_3,
    angles=(0, 90),
    density=0.7) |> generate!
paint(wc, "highdensity.png", ratio=0.5)

println("results are saved to highdensity.png")
wc

juliadoc

using WordCloud
function drawjuliacircle(sz)
    juliacirclessvg = WordCloud.Render.Drawing(sz, sz, :svg)
    WordCloud.Render.origin()
    WordCloud.Render.background(0, 0, 0, 0)
    WordCloud.Render.juliacircles(sz ÷ 4)
    WordCloud.Render.finish()
    juliacirclessvg
end

docs = (readdir(joinpath(dirname(Sys.BINDIR), "share/doc/julia/html/en", dir), join=true) for dir in ["manual", "base", "stdlib"])
docs = docs |> Iterators.flatten

words, weights = processtext(maxnum=400, maxweight=1) do
    counter = Dict{String,Int}()
    for doc in docs
        content = html2text(open(doc))
        countwords(content, counter=counter)
    end
    counter
end

wc = wordcloud(
    [words..., "∴"], # add a placeholder for julia-logo
    [weights..., weights[1]], 
    density=0.55,
    mask=shape(box, 900, 300, cornerradius=0, color=0.95),
    masksize=:original,
    colors=((0.796, 0.235, 0.20), (0.584, 0.345, 0.698), (0.22, 0.596, 0.149)),
    angles=(0, -45, 45),
    # fonts = "Verdana Bold",
    maxfontsize = 300,
)
setangles!(wc, "julia", 0)
# setangles!(wc, "function", 45)
# initialize!(wc, "function")
setcolors!(wc, "julia", (0.796, 0.235, 0.20))
# setfonts!(wc, "julia", "forte")
initialize!(wc, "julia")
juliacircles = drawjuliacircle(getfontsizes(wc, "∴") |> round)
setsvgimages!(wc, "∴", juliacircles) # replace image
sz1 = size(getimages(wc, "∴"))
sz2 = size(getimages(wc, "julia"))
y1, x1 = (size(wc.mask) .- (sz1[1], sz1[2] + sz2[2])) .÷ 2
y2 = (size(wc.mask, 1) - sz2[1]) ÷ 2
x1 = round(Int, x1 * 0.9)
setpositions!(wc, "∴", (x1, y1))
setpositions!(wc, "julia", (x1 + sz1[2], y2))

pin(wc, ["julia", "∴"]) do
    layout!(wc)
    generate!(wc, 2000)
end
println("results are saved to juliadoc.svg")
# paint(wc, "juliadoc.png")
paint(wc, "juliadoc.svg")
wc

languages

WordCloud.jl can process English text. For Chinese text, please refer to the example 中文. For other languages, you can input the data in the form of "word => weight" list, as shown in the example below.

using WordCloud
words_weights = [
    "普通话" => 939.0,
    "Español" => 485.0,
    "English" => 380.0,
    "हिन्दी" => 345.0,
    "Português" => 236.0,
    "বাংলা" => 234.0,
    "Русский" => 147.0,
    "日本語" => 123.0,
    "粤语" => 86.1,
    "Tiếng Việt" => 85.0,
    "Türkçe" => 84.0,
    "吴语" => 83.4,
    "मराठी" => 83.2,
    "తెలుగు" => 83.0,
    "한국어" => 81.7,
    "Français" => 80.8,
    "தமிழ்" => 78.6,
    "مصري" => 77.4,
    "Deutsch" => 75.3,
    "اردو" => 70.6,
    "ꦧꦱꦗꦮ" => 68.3,
    "پنجابی" => 66.7,
    "Italiano" => 64.6,
    "فارسی" => 57.2,
    "ગુજરાતી" => 57.1,
    "भोजपुरी" => 52.3,
    "هَوْسَ" => 51.7
]
wc = wordcloud(words_weights) |> generate!

println("results are saved to languages.svg")
paint(wc, "languages.svg")
wc

lettermask

using WordCloud
mask = rendertext("World", 1000, border=10, color=0.9, backgroundcolor=0.98, type=:svg, font="Sans Bold")
words = repeat(["we", "are", "the", "world"], 150)
weights = repeat([1], length(words))
wc = wordcloud(
        words, weights, 
        mask=mask,
        angles=0,
        colors=("#006BB0", "#EFA90D", "#1D1815", "#059341", "#DC2F1F"),
        density=0.55,
        transparent=0.98,
        ) |> generate!
println("results are saved to lettermask.svg")
paint(wc, "lettermask.svg", background=false)
wc

logo

It is the code to draw this repo's logo

using WordCloud
Luxor = WordCloud.Render.Luxor

function cloudshape(height, args...; backgroundcolor=(0, 0, 0, 0))
    height = ceil(height)
    r = height / 2
    d = Luxor.Drawing((2height, height)..., :svg)
    Luxor.origin()
    Luxor.background(parsecolor(backgroundcolor))
    Luxor.setcolor(parsecolor((0.22, 0.596, 0.149)))
    Luxor.pie(0, 0, r, 0, 2π, :fill)
    Luxor.setcolor(parsecolor((0.584, 0.345, 0.698)))
    Luxor.pie(r, r, r, -π, 0, :fill)
    Luxor.setcolor(parsecolor((0.796, 0.235, 0.20)))
    Luxor.Luxor.pie(-r, r, r, -π, 0, :fill)
    Luxor.finish()
    d
end
wc = wordcloud(
    repeat(string.('a':'z'), 5),
    repeat([1], 26 * 5),
    mask=cloudshape(500),
    masksize=:original,
    transparent=(0, 0, 0, 0),
    colors=1,
    angles=-90:0,
    fonts="JuliaMono Black",
    density=0.7,
    )
generate!(wc, 2000, retry=1)
recolor!(wc, style=:main)
println("results are saved to logo.svg")
paint(wc, "logo.svg", background=false)
wc

nomask

The word clouds generated by WordCloud.jl are always with a mask, but we can imitate the no-mask-style through the following steps:

set a lower density
set the background color as the mask color
gathering style placement
generating with repositioning off

using WordCloud
wc = wordcloud(
    processtext(open(pkgdir(WordCloud) * "/res/Donald Trump's Inaugural Address.txt"), maxweight=1, minweight=0),
    density=0.3,
    mask=box,
    cornerradius=0,
    masksize=(1200, 900),
    backgroundcolor=:maskcolor,
    angles=rand((0, (0, 90))),
    state=identity,
)

place words in the center of the background to prevent encountering the mask boundary

layout!(wc, style=:gathering, reorder=WordCloud.shuffle, level=6, rt=1) # a proper level is important, and so is luck
paint(wc, "nomask-placewords.svg")

prevent repositioning words to the surrounding blank space

generate!(wc, reposition=false)
paint(wc, "nomask.svg")
wc

outline

using WordCloud
words = (1:200) .% 10 .|> string
weights = (1:200) .% 11 .+ 1

SVG

You can directly set the outline and maskcolor in wordcloud

wc1 = wordcloud(
    words, weights,
    mask = squircle, rt=0.5,
    masksize = (300, 200),
    maskcolor = "AliceBlue",
    outline = 6, linecolor = "navy"
) |> generate!

Or if you already have a SVG mask with outline, you should set a proper transparent region in wordcloud

svgmask = shape(squircle, 300, 200, outline=6, linecolor="navy", color="AliceBlue")
wc1 = wordcloud(
    words, weights,
    mask = svgmask,
    transparent=c -> c != WordCloud.torgba("AliceBlue"), # the outline should be regarded as transparent too
) |> generate!

paint(wc1, "outline.svg")
println("results are saved to outline.svg")

Bitmap

If you already have a bitmap mask without outline, you can outline it before painting

bitmapmask = WordCloud.tobitmap(shape(squircle, 300, 200, color="AliceBlue", backgroundsize=(312, 212)))
wc2 = wordcloud(
    words, weights,
    mask = bitmapmask,
) |> generate!
paint(wc2, "outline.png", background=outline(getmask(wc2), color="navy", linewidth=6, smoothness=0.8))
println("results are saved to outline.png")

wc1, wc2

pattern

The engine is designed for general purpose, so the outputs don't have to be text, and shapes are OK

using WordCloud

sc = WordCloud.randomscheme() |> unique # unique makes Int -> Vector{Int}
l = 200
wc = wordcloud(
    repeat(["placeholder"], l), repeat([1], l), 
    mask=shape(box, 400, 300, color=WordCloud.randommaskcolor(sc)),
    masksize=:original,
    state=identity)

words & weights are just placeholders
style arguments like colors, angles and density have no effect

And, you should manually initialize images for the placeholders, instead of calling initialize!

dens = 0.6
sz = 3expm1.(rand(l)) .+ 1
sz ./= √(sum(π * (sz ./ 2).^2 ./ dens) / prod(size(wc.mask))) # set a proper size according to the density
## svg version
# shapes = [shape(ellipse, round(sz[i]), round(sz[i]), color=rand(sc)) for i in 1:l]
# setsvgimages!(wc, :, shapes)
## bitmap version
shapes = WordCloud.tobitmap.([shape(ellipse, round(sz[i]), round(sz[i]), color=rand(sc)) for i in 1:l])
setimages!(wc, :, shapes)

setstate!(wc, :initialize!) # set the state flag after manual initialization
@record "pattern_animation" overwrite=true generate!(wc, retry=1, optimiser=WordCloud.Momentum(η=1/8))
# generate!(wc, retry=1, optimiser=WordCloud.Momentum(η=1/8)) # turn off rescale attempts. manually set images can't be rescaled
println("results are saved to pattern.png")
paint(wc, "pattern.png")
wc

qianziwen

using WordCloud
words = "天地玄黄宇宙洪荒日月盈昃辰宿列张寒来暑往秋收冬藏闰余成岁律吕调阳云腾致雨露结为霜金生丽水玉出昆冈剑号巨阙珠称夜光果珍李柰菜重芥姜海咸河淡鳞潜羽翔龙师火帝鸟官人皇始制文字乃服衣裳推位让国有虞陶唐吊民伐罪周发殷汤坐朝问道垂拱平章"
words = [string(c) for c in words]
weights = rand(length(words)).^2 .* 100 .+ 30
wc = wordcloud(words, weights, spacing=0, density=0.75)
generate!(wc)

random

using WordCloud
using Random
words = [randstring(rand(1:8)) for i in 1:300]
weights = randexp(length(words))
wordcloud(words, weights) |> generate!

recolor

using WordCloud
using Random

istrans = c -> maximum(c[1:3]) * (c[4] / 255) < 128
background, mask = loadmask(pkgdir(WordCloud) * "/res/butterfly.png", transparent=istrans, return_bitmask=true)
showmask(background, mask, highlight=(1, 0, 0, 0.7))

showmask might be helpful to find a proper istrans function. using Images may be required.

words = [randstring(1) for i in 1:600]
weights = randexp(length(words)) .+ 1

wc = wordcloud(
    words, weights,
    mask=background,
    maskcolor=:original,
    colors="LimeGreen",
    angles=-30,
    density=0.4,
    transparent=istrans,
    spacing=1,
) |> generate!;
background2 = loadmask(getmask(wc), color=0.99)

average style

recolor!(wc, style=:average)
avgimg = paint(wc, background=background2)

clipping style

recolor!(wc, style=:clipping)
clipimg = paint(wc, background=background2)

blending style

recolor!(wc, style=:reset)
recolor!(wc, style=:blending, alpha=0.5) # blending with origin color - LimeGreen
blendimg = paint(wc, background=background2)

mix style

styles can also be mixed

# setcolors!(wc, :, "LimeGreen")
recolor!(wc, style=:reset)
recolor!(wc, 1:3:length(words), style=:average) # vector index is ok
recolor!(wc, 2:3:length(words), style=:clipping)
recolor!(wc, 3:3:length(words), style=:blending)
setcolors!(wc, 200:250, "black")
recolor!(wc, 200:250, style=:reset)
setcolors!(wc, 1, "black")
recolor!(wc, 1, style=:reset) # single index is ok
mixstyleimg = paint(wc, background=background2)

h, w = size(avgimg)
lw = 21
lc = eltype(avgimg)(parsecolor(0.1))
vbar = zeros(eltype(avgimg), (h, lw))
hbar = zeros(eltype(avgimg), (lw, 2w + lw))
vbar[:, lw ÷ 2 + 1] .= lc
hbar[lw ÷ 2 + 1, :] .= lc
image = [avgimg vbar clipimg; hbar; blendimg vbar mixstyleimg]
println("results are saved to recolor.png")
WordCloud.save("recolor.png", image)
wc

semantic

Words

using WordCloud
stwords = ["us"];
words_weights = processtext(open(pkgdir(WordCloud) * "/res/Barack Obama's First Inaugural Address.txt"), stopwords=WordCloud.stopwords_en ∪ stwords)
words_weights = Dict(zip(words_weights...))

Embedding

The positions of words can be initialized with pre-trained word vectors so that similar words will appear near each other.

using Embeddings
using TSne
const embtable = load_embeddings(GloVe{:en})
const get_word_index = Dict(word => ii for (ii, word) in enumerate(embtable.vocab))
function get_embedding(word)
    ind = get_word_index[word]
    emb = embtable.embeddings[:,ind]
    return emb
end
wordvec = Dict()
for k in keys(words_weights)
    if k in keys(get_word_index)
        wordvec[k] = get_embedding(k)
    elseif lowercase(k) in keys(get_word_index)
        wordvec[k] = get_embedding(lowercase(k))
    else
        pop!(words_weights, k)
        println("remove ", k)
    end
end
words = keys(wordvec) |> collect
vectors = hcat(values(wordvec)...)
embedded = tsne(vectors', 2)

wc = wordcloud(
    words_weights,
    mask=box,
    masksize=(1000, 1000),
    cornerradius=0,
    density=0.3,
    colors=0.3,
    backgroundcolor=:maskcolor,
    state=initialize!,
    # angles = (0, 45), fonts = "Eras Bold ITC", maskcolor=0.98,
)

pos = embedded
mean = sum(pos, dims=1) / size(pos, 1)
r = maximum(sqrt.(pos[:,1].^2 + pos[:,2].^2))
pos = (pos .- mean) ./ 2r
sz = collect(reverse(size(wc.mask)))'
sz0 = collect(getparameter(wc, :masksize)[1:2])'
pos = round.(Int, pos .* sz0 .+ sz ./ 2)

setpositions!(wc, words, eachrow(pos), mode=setcenter!)
setstate!(wc, :layout!)
generate!(wc, reposition=false)
paint(wc, "semantic_embedding.png")

Clustering

Words can be further colored according to semantic clustering

using Clustering
V = embedded
G = V * V'
H = sum(V.^2, dims=2)
D = max.(0, (H .+ H' .- 2G))
D ./= sum(D) / length(D)
D .= .√D # the distance matrix
tree = hclust(D, linkage=:ward)
lb = cutree(tree, h=3, k=8)
println("$(length(lb)) words are divided into $(length(unique(lb))) groups")

colors = parsecolor(:seaborn_dark)
setcolors!(wc, words, colors[lb .% length(colors) .+ 1])
recolor!(wc, style=:reset)
paint(wc, "semantic_clustering.png")

wc

series

This example shows how to generate a dynamic word cloud on series data.

Prepare some data

We use the GDP of countries from 2000 to 2020 as an example.

using WorldBankData
using DataFrames
df0 = wdi("NY.GDP.MKTP.CD", "all", 2000, 2020) # GDP from 2000 to 2020
df0.year = round.(Int, df0[!, :year])
df = unstack(df0, :year, :NY_GDP_MKTP_CD)
country_groups = ["XC", "EU", "XE", "XD", "XF", "ZB", "ZT", "XH", "XI", "XG", "ZJ", "XJ", "XL", "XO", 
    "XM", "XN", "ZQ", "XQ", "XP", "XU", "XY", "OE", "ZG", "ZF", "XT"]|>Set # https://rpubs.com/federicoganz/749793
countrymask = .!occursin.(r"\d" , df.iso2c) .& .!in.(df.iso2c, Ref(country_groups))
df = df[countrymask, 2:end]
df[!, 2:end] .= sqrt.(df[!, 2:end] ./ length.(df.country))
df.country = replace.(df.country, " "=>"\n") # some names are too long
for i in 1:size(df, 1) # interpolation, fill missing
    for j in 3:size(df, 2)
        if ismissing(df[i, j])
            df[i, j] = df[i, j-1]
        end
    end
end

Generate the wordcloud

using WordCloud
function gather!(wc, i=1:length(wc), r=1)
    O = reverse(size(getmask(wc))) .÷ 2
    order1 = sortperm(sortperm(getpositions(wc, i, mode=getcenter), by=p->sum((p .- O).^2)))
    order2 = sortperm(getweights(wc, i))
    radial = Int.(order2 .> order1)
    gatheritem!.(wc, WordCloud.index(wc, i), r.*radial);
end
function gatheritem!(wc, i, r=1)
    r == 0 && return
    C = getpositions(wc, i, mode=getcenter)
    Δ = sign.(reverse(size(getmask(wc))) .÷ 2 .- C)
    setpositions!(wc, i, C .+ r .* Δ, mode=setcenter!)
end

These two functions are ussed to forcing large words to the center, but are not essential.

wc = wordcloud(df.country, 1, angles=0)
gif = WordCloud.GIF("series")
println("results are saved in series")
@assert length(unique(df[!, 1])) == length(df[!, 1])
initialized = false
for name in names(df)[2:end] # the first column is word list
    words = df[!, 1]
    weights = df[!, name]
    missingmask = ismissing.(weights)
    setweights!.(wc, words[.!missingmask], weights[.!missingmask])
    println("#"^9, name, "#"^9)
    ignore(wc, words[missingmask]) do
        global initialized
        words = getwords(wc)
        pos = getpositions(wc, mode=getcenter)
        initialize!(wc)
        if !initialized
            layout!(wc, style=:gathering)
            initialized = true
        else
            setpositions!(wc, words, pos, mode=setcenter!)
            setstate!(wc, :layout!)
        end
        generate!(wc, callback_pre=ep->(ep%5==0 && gather!(wc, 1:length(wc)÷5, 5)))
        WordCloud.frame(wc, name) |> gif
        # display(wc)
    end
end
WordCloud.Render.generate(gif, framerate=4)
wc

中文

中文需要分词，可以通过PythonCall调用python版的结巴分词

using CondaPkg; CondaPkg.add("jieba")
using WordCloud
using PythonCall

jieba = pyimport("jieba")

TheInternationale = "起来，饥寒交迫的奴隶！\n起来，全世界受苦的人！\n满腔的热血已经沸腾，\n要为真理而斗争！\n旧世界打个落花流水，\n奴隶们起来，起来！\n不要说我们一无所有，\n我们要做天下的主人！\n\n这是最后的斗争，\n团结起来到明天，\n英特纳雄耐尔\n就一定要实现！\n这是最后的斗争，\n团结起来到明天，\n英特纳雄耐尔\n就一定要实现！\n\n从来就没有什么救世主，\n也不靠神仙皇帝！\n要创造人类的幸福，\n全靠我们自己！\n我们要夺回劳动果实，\n让**冲破牢笼！\n快把那炉火烧得通红，\n趁热打铁才能成功！\n\n是谁创造了人类世界？\n是我们劳动群众！\n一切归劳动者所有，\n哪能容得寄生虫？！\n最可恨那些毒蛇猛兽，\n吃尽了我们的血肉！\n一旦把它们消灭干净，\n鲜红的太阳照遍全球！\n"

jieba.add_word("英特纳雄耐尔")

wc = wordcloud(
    processtext(pyconvert(Vector{String}, jieba.lcut(TheInternationale))), 
    colors="#DE2910",
#     mask = WordCloud.randommask(400, color="#FFDE00"),
    mask=pkgdir(WordCloud) * "/res/heart_mask.png",
    maskcolor="#FFDE00",
    masksize=500,
    density=0.6,
    ) |> generate!

println("结果保存在 中文.png")
paint(wc, "中文.png")
wc