[R] Looping

[@vi@e@gross m@iii@g oii gm@ii@com]

Steven,

It depends what you want to do. What you are showing seems to replace the values stored in "data" each time.

Many kinds of loops will do that, with one simple way being to store all the filenames in a list and loop on the contents of the list as arguments to read.csv.

Since you show filenames as having a number from 1 to 24 in middle, you can make such a vector using paste().

A somewhat related question is if you want to concatenate all the data into one larger data.frame. 


-----Original Message-----
From: R-help <r-help-bounces using r-project.org> On Behalf Of Steven Yen
Sent: Sunday, February 18, 2024 10:28 PM
To: R-help Mailing List <r-help using r-project.org>
Subject: [R] Looping

I need to read csv files repeatedly, named data1.csv, data2.csv,… data24.csv, 24 altogether. That is, 

data<-read.csv(“data1.csv”)
…
data<-read.csv(“data24.csv”)
…

Is there a way to do this in a loop? Thank you.

Steven from iPhone
	[[alternative HTML version deleted]]

______________________________________________
R-help using r-project.org mailing list -- To UNSUBSCRIBE and more, see
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.