R:如何在不将其转换为矩阵的情况下从列表的每个内部元素中删除第一个元素? [英] R: How do I remove the first element from each inner element of a list without converting it to matrix?

问题描述

我有一个这样的列表

[[1]]
[1] a1 b1 c1
[[2]]
[1] a2 b2 c2
[[3]]
[1] a3 b3 c3

我希望从其中的每个部分中删除特定元素:

I want specific element removed from each part of it:

[[1]]
[1] a1 c1
[[2]]
[1] a2 c2
[[3]]
[1] a3 c3

我尝试了tail，但是删除了外部"元素.也许有些索引会做什么?

I tried tail but removes "outer" elements. Maybe some indexing would do?

推荐答案

假设模式只是您要删除第二个元素，

Assuming the pattern is just that you want the second element removed,

lapply(List, function(x) x[-2])

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