I have a bunch of csv file names that I need to read into R and split into a list of lists based on the file name. Say my files are named:
"gam_1-1.csv"
"gam_1-2.csv"
"gam_2-1.csv"
"gam_2-2.csv"
How do I separate them so that I have a list of lists with the file names, where:
list1 <- list("gam_1-1.csv","gam_1-2.csv")
list2 <- list("gam_2-1.csv","gam_2-2.csv")
final_list <- list(list1,list2)
>Solution :
You can split
on a substring of the filenames.
files <- c("gam_1-1.csv", "gam_1-2.csv", "gam_2-1.csv", "gam_2-2.csv")
split(files, sub("-.*", "", files))
# $gam_1
# [1] "gam_1-1.csv" "gam_1-2.csv"
# $gam_2
# [1] "gam_2-1.csv" "gam_2-2.csv"