wordcloud2 learning tutorial

wordcloud2函数

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: A character string of the subtitle

• 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.*

#' Webshot a widget and place it in place with markdown syntax
#'
#' @param widget a html widget, i.e. generated by wordcloud2 pacakge
#' @param path figure webshot storage place
#'
#' @return
#' @export
#'
#' @examples
library(wordcloud2)
markdown_widget <- function(widget,path=getwd(),filename="file.png"){
  require(htmlwidgets)
  require(webshot)
  saveWidget(widget,"tmp.html",selfcontained = F)
  file <- paste(path,filename,sep = "/")
  webshot("tmp.html",file,delay = 5,vwidth = 1024,vheight = 768)
  file.remove("tmp.html")
  paste0("![",file,"](",file,")\n\n") %>% cat()
}

英语版本

library(wordcloud2)
wordcloud2(demoFreq, size = 1,shape = 'circle')

wordcloud2(demoFreq, size = 1,shape = 'cardioid')

wordcloud2(demoFreq, size = 1,shape = 'diamond')

wordcloud2(demoFreq,size = 1,shape = 'triangle-forward')

wordcloud2(demoFreq, size = 1,shape = 'triangle')

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

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

wordcloud2(demoFreq, size = 1, minRotation = -pi/2, maxRotation = -pi/2,shape = "star")

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

中文版本

wordcloud2(demoFreqC,
           size = 2, 
           fontFamily = "微软雅黑",
           color = "random-light",
           backgroundColor = "grey")

wordcloud2(demoFreqC,
           size = 0.8, 
           fontFamily = "微软雅黑",
           color = "random-light",
           backgroundColor = "grey",shape = "star"
          )

letterCloud函数

letterCloud(demoFreq, word = "R")

letterCloud(demoFreq, word = "Python")

letterCloud(demoFreq, word = "WORDCLOUD2")

其它资料

CRAN

wordCloud