extract_rows_from_file: Extract Rows from File
In Kmisc: Kevin Miscellaneous

View source: R/RcppExports.R View source: R/extract_rows_from_file.R

This function reads through a delimited file on disk, determines if the entry at the specified column is in a character vector of items, and writes that line to file (or to R) if it is.

1	extract_rows_from_file(file, out = NULL, column, sep = NULL, keep)

`file`	The input file to extract rows from.
`out`	The location to output the file. If this is `NULL`, we redirect output back into the R session.
`column`	The column to check, indexed from 1.
`sep`	The delimiter used in `file`. Must be a single character. If no delimiter is specified, we guess the delimiter from the first row of `file`.
`keep`	A character vector containing all items that we want to check and keep within the `column`th column of each row.