Package 'wordcloud2'

Change the themes of wordcloud2

Description

Function for Creating wordcloud theme

Usage

## S3 method for class 'wordcloud2'
e1 + e2

Arguments

e1	wordcloud2 object
e2	wordcloud2 themes

Examples

wc = wordcloud2(demoFreq)

wc + WCtheme(1)
wc + WCtheme(2)
wc + WCtheme(3)
wc + WCtheme(2) + WCtheme(3)

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Demo dataset with Words and Frequency

Description

A data file of words and frequency from tm package

Usage

demoFreq

Format

A data set with 1011 observations of 2 variables, words and frequancy

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Demo dataset with Chinese character Words and Frequency

Description

A data file of words and frequency from tm package

Usage

demoFreqC

Format

A data set with 885 observations of 2 variables, words and frequancy

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Create wordcloud with the shape of a word

Description

Function for Creating wordcloud with the shape of a word

Usage

letterCloud(data, word, wordSize = 0, letterFont = NULL, ...)

Arguments

data	A data frame including word and freq in each column
word	A word to create shape for wordcloud.
wordSize	Parameter of the size of the word.
letterFont	Letter font
...	Other parameters for wordcloud.

Examples

library(wordcloud2)

letterCloud(demoFreq,"R")

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Change the themes of wordcloud2

Description

Function for Creating wordcloud theme

Usage

WCtheme(class = 1)

Arguments

class

class for theme in wordcloud2

Examples

wc = wordcloud2(demoFreq)

wc + WCtheme(1)
wc + WCtheme(2)
wc + WCtheme(3)
wc + WCtheme(2) + WCtheme(3)

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Create wordcloud by wordcloud2.js

Description

Function for Creating wordcloud by wordcloud2.js

Usage

wordcloud2(data, size = 1, minSize = 0, gridSize =  0,
    fontFamily = 'Segoe UI', fontWeight = 'bold',
    color = 'random-dark', backgroundColor = "white",
    minRotation = -pi/4, maxRotation = pi/4, shuffle = TRUE,
    rotateRatio = 0.4, shape = 'circle', ellipticity = 0.65,
    widgetsize = NULL, figPath = NULL, hoverFunction = NULL)

Arguments

data	A data frame including word and freq in each column
size	Font size, default is 1. The larger size means the bigger word.
minSize	minimum font size to draw on the canvas.
gridSize	Size of the grid in pixels for marking the availability of the canvas the larger the grid size, the bigger the gap between words.
fontFamily	Font to use.
fontWeight	Font weight to use, e.g. normal, bold or 600
color	color of the text, keyword 'random-dark' and 'random-light' can be used. color vector is also supported in this param
backgroundColor	Color of the background.
minRotation	If the word should rotate, the minimum rotation (in rad) the text should rotate.
maxRotation	If the word should rotate, the maximum rotation (in rad) the text should rotate. Set the two value equal to keep all text in one angle.
shuffle	Shuffle the points to draw so the result will be different each time for the same list and settings.
rotateRatio	Probability for the word to rotate. Set the number to 1 to always rotate.
shape	The shape of the "cloud" to draw. Can be a keyword present. Available presents are 'circle' (default), 'cardioid' (apple or heart shape curve, the most known polar equation), 'diamond' (alias of square), 'triangle-forward', 'triangle', 'pentagon', and 'star'.
ellipticity	degree of "flatness" of the shape wordcloud2.js should draw.
widgetsize	size of the widgets
figPath	The path to a figure used as a mask.
hoverFunction	Callback to call when the cursor enters or leaves a region occupied by a word. A string of java script function.

Examples

library(wordcloud2)
# Global variables can go here



wordcloud2(demoFreq)
wordcloud2(demoFreq, size = 2)

wordcloud2(demoFreq, size = 1,shape = 'pentagon')
wordcloud2(demoFreq, size = 1,shape = 'star')

wordcloud2(demoFreq, size = 2,
           color = "random-light", backgroundColor = "grey")

wordcloud2(demoFreq, size = 2, minRotation = -pi/2, maxRotation = -pi/2)
wordcloud2(demoFreq, size = 2, minRotation = -pi/6, maxRotation = -pi/6,
  rotateRatio = 1)
wordcloud2(demoFreq, size = 2, minRotation = -pi/6, maxRotation = pi/6,
  rotateRatio = 0.9)

wordcloud2(demoFreqC, size = 2,
           color = "random-light", backgroundColor = "grey")
wordcloud2(demoFreqC, size = 2, minRotation = -pi/6, maxRotation = -pi/6,
  rotateRatio = 1)

# Color Vector

colorVec = rep(c('red', 'skyblue'), length.out=nrow(demoFreq))
wordcloud2(demoFreq, color = colorVec, fontWeight = "bold")

wordcloud2(demoFreq,
  color = ifelse(demoFreq[, 2] > 20, 'red', 'skyblue'))

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Plot wordcloud2 in shiny

Description

Function for plotting wordcloud2 in shiny

Usage

wordcloud2Output(outputId, width = "100%", height = "400px")
clickedWordInputId is automatically generated by: paste0(outputId, "_clicked_word"))

renderWordcloud2(expr, env = parent.frame(), quoted = FALSE)

wordcloud2Output(outputId, width = "100%", height = "400px")

renderWordcloud2(expr, env = parent.frame(), quoted = FALSE)

Arguments

outputId	output variable to read from
width, height	Must be a valid CSS unit (like "100%", "400px", "auto") or a number, which will be coerced to a string and have "px" appended.
expr	An expression that generates a networkD3 graph
env	The environment in which to evaluate expr.
quoted	Is expr a quoted expression (with quote())? This is useful if you want to save an expression in a variable.

Details

Use renderWordcloud2 to render an wordcloud2 object and use wordcloud2Output output an wordcloud2 object. See more details in shiny package.

This will be the same value as shown in the hover information (example: super:32).

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