string - 如何在R中获取不超过一定长度的字符串

Question

我有一个看起来像这样的字符串向量

x <- c("WDNTO","WDRN","WDSAX","WECAX","WEN","WEDTO")

我想要做的是只提取不超过 4 个字符的字符串，导致

  WDNT,WDRN,WDSA,WECA,WEN,WEDT

有什么办法呢？

score 9 · Accepted Answer

9

substr(x,1,4)
?substr

我对SO的第一个回答！

于 2013-04-02T02:10:21.430 回答

score 3 · Accepted Answer

3

使用substr，例如

substr(x, 1, 4)

于 2013-04-02T02:07:54.970 回答

2 回答 2