R: Bulk Read Comma Separated Files

bulk_read_csv {fritools2}

R Documentation

Bulk Read Comma Separated Files

Description

Import a bunch of comma separated files or all comma separated files below a directory using read_csv.

Usage

bulk_read_csv(
  paths,
  stop_on_error = FALSE,
  is_latin1 = TRUE,
  pattern = ".*\\.csv$",
  all_files = TRUE,
  recursive = FALSE,
  ignore_case = FALSE,
  find_all = FALSE,
  select = NA,
  ...
)

Arguments

`paths`	A vector of file paths or the directory to find files.
`stop_on_error`	Stop if any of the files is not read? Warn and continue otherwise.
`is_latin1`	Are the files encoded in "Latin1"?
`pattern`	see `find_files`. Ignored, if `paths` is not a directory.
`all_files`	see `find_files`. Ignored, if `paths` is not a directory.
`recursive`	see `find_files`. Ignored, if `paths` is not a directory.
`ignore_case`	see `find_files`. Ignored, if `paths` is not a directory.
`find_all`	see `find_files`. Ignored, if `paths` is not a directory.
`select`	see `find_files`. Ignored, if `paths` is not a directory.
`...`	Arguments passed to `read_csv`.

Value

A named list, each element holding the contents of one csv file read by read_csv.

Examples

unlink(dir(tempdir(), full.names = TRUE))
data(mtcars)
mt_german <- mtcars
rownames(mt_german)[1] <- "Mazda R\u00f64"
names(mt_german)[1] <- "mg\u00dc"
#% read from directory
for (i in 1:10) {
    f <- file.path(tempdir(), paste0("f", i, ".csv"))
    write.csv(mtcars[1:5, TRUE], file = f)
    f <- file.path(tempdir(), paste0("f", i, "_german.csv"))
    write.csv2(mt_german[1:7, TRUE], file = f, fileEncoding = "Latin1")
}
bulk <- bulk_read_csv(tempdir())

#% pass a path
f <- list.files(tempdir(), pattern = ".*\\.csv$", full.names = TRUE)[1]
bulk <- bulk_read_csv(f)

#% pass multiple path
f <- list.files(tempdir(), pattern = ".*\\.csv$", full.names = TRUE)[2:4]
bulk <- bulk_read_csv(f)