分为3个字符长度 [英] Split into 3 character length

问题描述

我有一个非常简单的问题：如何在单个代码中将以下文本分为3

I have very simple question: How can I divide the following text into 3 in a single code

mycodes <- c("ATTTGGGCTAATTTTGTTTCTTTCTGGGTCTCTC")
strsplit(mycodes, split = character(3), fixed = T, perl = FALSE, useBytes = FALSE)

[[1]]
 [1] "A" "T" "T" "T" "G" "G" "G" "C" "T" "A" "A" "T" "T" "T" "T" "G" "T" "T" "T" "C"
[21] "T" "T" "T" "C" "T" "G" "G" "G" "T" "C" "T" "C" "T" "C"

这不是我想要的；我一次要三个字母：

This is not what I want; I want three letters at a time:

[1] "ATT"  "TGG", "GCT"...............and so on the final may be of one, two or three letters depending upon the letter availability.

谢谢；

推荐答案

我假设您想使用密码子。如果是这种情况，您可能需要查看Bioconductor提供的Biostrings套件。它提供了用于处理生物序列数据的多种工具。

I assume you want to work with codons. If that's the case, you might want to look at the Biostrings package from Bioconductor. It provides a variety of tools for working with biological sequence data.

library(Biostrings)
?codons

只需一点笨拙的强制即可实现您想要的：

You can achieve what you want, with a little bit of clumsy coercion:

as.character(codons(DNAString(mycodes)))

这篇关于分为3个字符长度的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！