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R-唯一的逗号分隔值_R - Fatal编程技术网
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R-唯一的逗号分隔值

r

R-唯一的逗号分隔值,r,R,我有逗号分隔的值，如“黑、白、黑”，我想要唯一的逗号分隔值： a <- "black, white, black" a试试下面的代码 > toString(unique(unlist(strsplit(a,",\\s+")))) [1] "black, white" 或 请尝试下面的代码 > toString(unique(unlist(strsplit(a,",\\s+")))) [1] &q

我有逗号分隔的值，如“黑、白、黑”，我想要唯一的逗号分隔值：

a <- "black, white, black"

a试试下面的代码


> toString(unique(unlist(strsplit(a,",\\s+"))))
[1] "black, white"


或

请尝试下面的代码


> toString(unique(unlist(strsplit(a,",\\s+"))))
[1] "black, white"


或


> toString(unique(trimws(scan(text = a, what = character(),sep = ","))))
Read 3 items
[1] "black, white"