this.path (version 1.4.0)

here: Construct Path to File, Starting with 'this.dir()'

Description

Construct the path to a file from components / / paths in a platform-DEPENDENT way, starting with this.dir().

Usage

here(..., .. = 0)
ici(..., .. = 0)

Value

A character vector of the arguments concatenated term-by-term, starting with the executing script's directory.

Arguments

...

further arguments passed to path.join().

..

the number of directories to go back.

Details

The path to a file starts with a base. The base is .. number of directories back from the executing script's directory (this.dir()). The argument is named .. because ".." refers to the parent directory on Windows, under Unix-alikes, and for URL pathnames.

Examples

FILE <- tempfile(fileext = ".R")
this.path:::write.code({


    this.path::here()
    this.path::here(.. = 1)
    this.path::here(.. = 2)


    ## use 'here' to read input from a file located nearby
    this.path::here(.. = 1, "input", "file1.csv")


    ## or maybe to run another script
    this.path::here("script2.R")


}, FILE)


source(FILE, echo = TRUE, verbose = FALSE)
unlink(FILE)