Word Cloud in R

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Import the package wordcloud2 -

> library(wordcloud2) 

If not installed then install it by running devtools::install_github("lchiffon/wordcloud2").

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Let’s use the data frame of words count called demoFreq -

> head(demoFreq)

         word freq
oil       oil   85
said     said   73
prices prices   48
opec     opec   42
mln       mln   31
the       the   26

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Wordcloud2

Using the wordcloud2 function create a word cloud -

> wordcloud2(demoFreq, size=1.2, color='random-light',
+            backgroundColor = "#FFFF99")

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Coloring

Using color = “random_dark” -

> wordcloud2(demoFreq, size=1.2, color='random-dark',
+            backgroundColor = "#FFFF99")

Using custom colors -

> wordcloud2(demoFreq, size=1.2, 
+            color=rep_len(c("green","blue","red"),nrow(demoFreq)))

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Fit to Basic Shapes

Shapes of the word clouds can be changed to many forms - x

> wordcloud2(demoFreq, size = 0.7, shape = 'star', ellipticity = 0.8)

> wordcloud2(demoFreq, size = 0.7, shape = 'circle')

> wordcloud2(demoFreq, size = 0.7, shape = 'cardioid')

> wordcloud2(demoFreq, size = 0.7, shape = 'diamond')

> wordcloud2(demoFreq, size = 0.7, shape = 'triangle-forward')

> wordcloud2(demoFreq, size = 0.7, shape = 'triangle')

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Fit to Photo

A photo mask can be used for the shape also. This can be done by providing the file in figpath -

> wordcloud2(demoFreq, figPath = "Data/bird.png", size = 1.5, 
+            color = "skyblue", backgroundColor="white")

Sometimes in RStudio and html files the output may not be seen. Refreshing the widget window may solve this problem.

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Fit to Word or Letter

Any word or letter also can be used as shape -

> letterCloud(demoFreq,"HIMEL")

> letterCloud(demoFreq, word = "Joy
+ Bangla", wordSize = 1)

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Saving Image

Here is a solution of how to save the produced image of this html widget output in local drive. But this method of saving does not appear to work when using a custom shape via the figPath parameter or using the letterCloud().