从R中的数据框创建wordcloud [英] Create wordcloud from a data frame in R
本文介绍了从R中的数据框创建wordcloud的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我制作了一个示例数据框.我尝试从项目"列中创建一个wordcloud.
I made a sample data frame. I try to make a wordcloud from the Projects column.
Hours<-c(2,3,4,2,1,1,3)
Project<-c("a","b","b","a","c","c","c")
Period<-c("2014-11-22","2014-11-23","2014-11-24","2014-11-22", "2014-11-23", "2014-11-23", "2014-11-24")
cd=data.frame(Project,Hours,Period)
这是我的代码:
cd$Project<-as.character(cd$Project)
wordcloud(cd$Project,min.freq=1)
但出现以下错误:
Error in strwidth(words[i], cex = size[i], ...) : invalid 'cex' value
In addition: Warning messages:
1: In max(freq) : no non-missing arguments to max; returning -Inf
2: In max(freq) : no non-missing arguments to max; returning -Inf
我在做什么错了?
推荐答案
我认为您缺少freq
参数.您想要创建一列,以指示每个项目发生的频率.因此,我使用dplyr
包中的count
转换了数据.
I think you are missing the freq
argument. You want to create a column indicating how often each project happened. I, therefore, transformed your data using count
in the dplyr
package.
library(dplyr)
library(wordcloud)
cd <- data.frame(Hours = c(2,3,4,2,1,1,3),
Project = c("a","b","b","a","c","c","c"),
Period = c("2014-11-22","2014-11-23","2014-11-24",
"2014-11-22", "2014-11-23", "2014-11-23",
"2014-11-24"),
stringsAsFactors = FALSE)
cd2 <- count(cd, Project)
# Project n
#1 a 2
#2 b 2
#3 c 3
wordcloud(words = cd2$Project, freq = cd2$n, min.freq = 1)
这篇关于从R中的数据框创建wordcloud的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!
查看全文