readDir: Read Directory

In weshorton/wrh.rUtils: Miscellaneous R Utility Functions

Read Directory

Description

Read in all of the files in a given directory

Usage

readDir(dir_v, files_v = NULL, pattern_v = NULL, names_v = NULL)

Arguments

dir_v	Path to directory containing files that should be read in
files_v	Vector containing the files within dir_v to read. See details for more info.
pattern_v	Regex pattern to search for files within dir_v to read. See details for more info.
names_v	Vector containing names to assign to each element. If blank, will use file name minus extension.

Details

There are multiple ways to determine which files will be read. First, files_v will be checked. If this argument has been specified, then these are the files that will be read in. If it is blank (NA), then pattern_v will be checked. If this has been specified, then it will be used to find matching files. If both files_v and pattern_v are blank, then all of the files in the directory will be read.

Value

List of data.tables

Examples

# Make directory called "~/Desktop/readDirTest"
write.table(matrix(1:100, nrow = 2), file = "~/Desktop/readDirTest/A.txt", row.names = F, quote = F, sep = '\t')
write.table(matrix(1:100, nrow = 10), file = "~/Desktop/readDirTest/B.txt", row.names = F, quote = F, sep = '\t')
write.table(matrix(1:100, nrow = 20), file = "~/Desktop/readDirTest/A.csv", row.names = F, quote = F, sep = ',')
readDir(dir_v = "~/Desktop/readDirTest)
readDir(dir_v = "~/Desktop/readDirTest, names_v = c("one", "two", "three))
readDir(dir_v = "~/Desktop/readDirTest, files_v = c("B.txt", "A.csv"))
readDir(dir_v = "~/Desktop/readDirTest, pattern_v = "*.txt")
readDir(dir_v = "~/Desktop/readDirTest, pattern_v = "A.*")

weshorton/wrh.rUtils documentation built on Feb. 6, 2025, 5:30 a.m.