R导入文本文件作为数据框列表 [英] R Import text file as list of dataframes

问题描述

我有一个很长的txt文件，其组织如下:

I have a long txt file organized as follows:

RANGE
P1 H1
P3 H4
P10 H72
P14 H76
;
RANGE
P1 H1
P10 H8
P11 H8
;
...

我想在R中阅读它，以创建一个数据帧列表，其中RANGE和;界定每个内容.因此，每个数据帧应具有两列(P和H)以及不同数量的行.先谢谢您的帮助.

I would like to read it in R creating a list of dataframes, where RANGE and ; delimit the content of each one. Therefore, each dataframe should have two columns (P's and H's) and different number of rows. Thanks in advance for the help.

推荐答案

在通过 readLines 和 split 根据"RANGE"的位置设置元素

We can do this using read.table after reading it with readLines and splitting the elements based on the position of 'RANGE'

lst <- lapply(split(lines, cumsum(lines=="RANGE")), 
    function(x) read.table(text=x[-c(1, length(x))], header=FALSE, stringsAsFactors=FALSE))
lst
#$`1`
#   V1  V2
#1  P1  H1
#2  P3  H4
#3 P10 H72
#4 P14 H76

#$`2`
#   V1 V2
#1  P1 H1
#2 P10 H8
#3 P11 H8

数据

lines <- readLines("yourfile.txt")

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