| file.show {base} | R Documentation |
Display one or more files.
file.show(..., header = rep("", nfiles), title = "R Information",
delete.file = FALSE, pager = getOption("pager"), encoding = "")
... |
one or more character vectors containing the names of the files to be displayed. |
header |
character vector (of the same length as the number of files
specified in ...) giving a header for each file being
displayed. Defaults to empty strings. |
title |
an overall title for the display. If a single separate
window is used for the display, title will be used as the window
title. If multiple windows are used, their titles should combine the title
and the file-specific header. |
delete.file |
should the files be deleted after display? Used for temporary files. |
pager |
the pager to be used. |
encoding |
charset to be assumed for the file(s). |
This function provides the core of the R help system, but it can be
used for other purposes as well, such as page.
How the pager is implemented is highly system-dependent.
The basic Unix version concatenates the files (using the headers) to a
temporary file, and displays it in the pager selected by the
pager argument, which is a character vector specifying a system
command (usually less) to run on the set of files.
Most GUI systems will use a separate pager window for each file,
and let the user leave it up while R
continues running. The selection of such pagers could either be done
using “magic” pager names being intercepted by lower-level code
(such as "internal" and "console" on Windows), or
by letting pager be an R function which will be called with the
same first four arguments as file.show and take care of
interfacing to the GUI.
Not all implementations will honour delete.file.
Ross Ihaka, Brian Ripley.
files,
list.files,
help.
file.show(file.path(R.home("doc"), "COPYRIGHTS"))