创建逗号分隔的向量 [英] Creating a comma separated vector

问题描述

我有一个数字向量，一个，我想把它变成一个字符向量，其中每个元素用逗号分隔.

I have a numeric vector, one, which I'm trying to turn into a character vector where each element is separated by commas.

> one = c(1:5)
> paste(as.character(one), collapse=", ")
[1] "1, 2, 3, 4, 5"
> paste(as.character(one), sep="' '", collapse=", ")
[1] "1, 2, 3, 4, 5"

但是，我希望输出看起来像:

However, I want the output to look like:

"1", "2", "3", "4", "5" 

我是否缺少粘贴功能中的某些参数?帮助！?

Am I missing some parameter from the paste function? Help!?

推荐答案

shQuote 可能是最好的方法.具体来说，这会让你得到你想要的输出:

shQuote is probably the best way to do this. Specifically, this gets you the output you want:

cat(paste(shQuote(one, type="cmd"), collapse=", "))

如果单引号没问题，可以使用:

If single quotes are fine, you can use:

paste(shQuote(one), collapse=", ")

type="cmd" 实际上提供了转义引号，这对大多数上下文实际上很有用，但是如果你真的想用非转义引号在某处显示它，cat提供.

type="cmd" actually provides escaped quotes, which is what's actually useful for most contexts, but if you really want to display it somewhere with unescaped quotes, cat provides that.

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