R: Report Capabilities of this Build of R

capabilities {base}

R Documentation

Report Capabilities of this Build of R

Report on the optional features which have been compiled into this build of R.

capabilities(what = NULL)

what character vector or NULL, specifying required components. NULL implies that all are required.

A named logical vector. Current components are

`jpeg`	Is the `jpeg` function operational?
`png`	Is the `png` function operational?
`tcltk`	Is the tcltk package operational?
`X11`	(Unix) Are the `X11` graphics device and the X11-based data editor available? As from R 2.1.0 this loads the X11 module if not already loaded, and checks that the default display can be contacted unless a `X11` device has already been used.
`http/ftp`	Are `url` and the internal method for `download.file` available?
`sockets`	Are `make.socket` and related functions available?
`libxml`	Is there support for integrating `libxml` with the R event loop?
`fifo`	are FIFO connections supported?
`cledit`	Is command-line editing available in the current R session? This is false in non-interactive sessions. It will be true for the command-line interface if `readline` support has been compiled in and `--no-readline` was not invoked.
`iconv`	is internationalization conversion via `iconv` supported?
`NLS`	is there Natural Language Support (for message translations)?

capabilities()

if(!capabilities("http/ftp"))
   warning("internal download.file() is not available")

## See also the examples for 'connections'.

[Package base version 2.2.1 Index]