Question

在var_label包中，由labelled函数产生的变量标签列表很长，如下所示：

list(prtclcie = "Which party feel closer to, Ireland", dweight = "Design weight", 
    edlvfdit = "Father's highest level of education, Italy", 
    edlvpdru = "Partner's highest level of education, Russian Federation", 
    edlvdpt = "Highest level of education, Portugal", icwhct = "Have a set 'basic' or contracted number of hours", 
    uemp3m = "Ever unemployed and seeking work for a period more than three months", 
    icomdng = "Interviewer code, one/more than one doing last 7 days", 
    edlvfenl = "Father's highest level of education, Netherlands", 
    prtvtdfi = "Party voted for in last national election, Finland")

我想找到一个基于关键字搜索此列表的命令，其方式是输出为列名stg。像prtclcie，edlvfdit之类。

我尝试使用grep("keyword", list)，但这只给出了“命中”的行号，而不是列表结构中的上层名称。

欢迎任何想法！谢谢！

Answer 1

使用value=TRUE返回值，而不仅仅是返回索引

grep("educ", list, value=TRUE)

如果只需要列表中的名称，请使用

names(grep("educ", list, value=TRUE))

在R中搜索层次结构列表

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