在 R 中导入多个文本文件并从预先确定的列表中为其指定名称 [英] Import multiple text files in R and assign them names from a predetermined list

问题描述

我刚开始使用 R，但在执行以下任务时遇到问题:我的工作目录中包含大约 130 个单独的纯文本文件中的语言示例.我想做的是使用扫描导入它们并保留它们的文件名.具体来说，我想做的是使用类似的东西:

I just started using R and I am having trouble performing the following task: I have approximately 130 language samples in separate plain text files sitting in my working directory. What I would like to do is import them using scan and retain their file names. Specifically, what I would like to do is using something like:

Patient01.txt <-scan("./Patient01.txt", what = "character")
Patient02.txt <-scan("./Patient02.txt", what = "character")
...
Patient130.txt <-scan("./Patient130.txt", what = "character")

有没有办法使用诸如 *apply 之类的命令来自动化该过程?

Is there a way to use a command such as *apply to automate the process?

推荐答案

这是自动化流程的一种方法

Here is one way to automate the process

# read txt files with names of the form Patient*.txt
txt_files = list.files(pattern = 'Patient*.txt');

# read txt files into a list (assuming separator is a comma)
data_list = lapply(txt_files, read.table, sep = ",")

如果您知道分隔符是什么，您可以更改它.将数据保存为数据框列表很方便，因为以后更容易投入向量化操作或循环.

You can change the separator if you know what it is. It is convenient to keep the data as a list of data frames since it is easier to throw into a vectorized operation or loops later.

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