downloadFile.character

From R.utils v1.32.4 by Henrik Bengtsson

Downloads a file

Downloads a file.

Keywords: methods, file, programming

Usage

## S3 method for class 'character':
downloadFile(url, filename=basename(url), path=NULL, skip=TRUE, overwrite=!skip, ...,
  username=NULL, password=NULL, binary=TRUE, dropEmpty=TRUE, verbose=FALSE)

Arguments

url: A character string specifying the URL to be downloaded.
filename, path: (optional) character strings specifying the local filename and the path of the downloaded file.
skip: If TRUE, an already downloaded file is skipped.
overwrite: If TRUE, an already downloaded file is overwritten, otherwise an error is thrown.
...: Additional arguments passed to download.file.
username, password: character strings specifying the username and password for authenticated downloads. The alternative is to specify these via the URL.
binary: If TRUE, the file is downloaded exactly "as is", that is, byte by byte (recommended).

dropEmpty: If TRUE and the downloaded file is empty, the file is ignored and NULL is returned.
verbose: A logical, integer, or a Verbose object.

Details

Currently arguments username and password are only used for downloads via URL protocol 'https'. The 'https' protocol requires that 'wget' is available on the system.

Value

Returns the local pathname to the downloaded filename, or NULL if no file was downloaded.

Examples

pathname <- downloadFile("http://www.r-project.org/index.html", path="www.r-project.org/")
 print(pathname)

Documentation reproduced from package R.utils, version 1.32.4, License: LGPL (>= 2.1)

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