如何交替连接3个字符串 [英] how to alternatively concatenate 3 strings

问题描述

我有3个字符串：

a<-c("a1","a2","a3")
b<-c("b1","b2","b3")
c<-c("c1","c2","c3")

如何获得以下输出：

"a1","b1","c1","a2","b2","c2","a3","b3","c3"

这是我尝试的内容：

paste(a,b,c,sep='","')

我得到了什么：

[1] a1\，\ b1\，\ c1 a2\，\ b2＼ ＼，\ c2 a3\，\ b3\，\ c3

是有办法吗？
谢谢。

Is there a way to do it? Thank you.

推荐答案

您还可以使用

c(rbind(a,b,c))

其中（ rbind ）将三个变量放到一个矩阵中（逐行），然后（ c（） ）利用R按列顺序存储矩阵这一事实，将它们转换回向量。

which (rbind) puts the three variables together into a matrix (row-wise), and then (c()) converts them back into a vector, taking advantage of the fact that R stores matrices in column-wise order.

此问题的某些答案源于（我认为）是因为操作者之间在组合各个字符串（例如 paste（ a，）之间缺乏清晰性（不知道这是理解还是沟通的问题……） b）得到长度为1的向量： ab））并组合字符串的 vector （ c（ a， b）得出长度为2的向量： a b ）

Some of the diversity of the answers to this question stems (I think) from a lack of clarity on the OP's part (don't know whether this is an issue of understanding or communication ...) between combining individual character strings (e.g. paste("a","b") results in a vector of length 1: "a b")) and combining vectors of character strings (c("a","b") results in a vector of length 2: "a" "b")

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