Load a given URL into an HTML browser.
a non-empty character string giving the URL to be loaded. Some platforms also accept file paths.
a non-empty character string giving the name of the program to be used as the HTML browser. It should be in the PATH, or a full path specified. Alternatively, an R function to be called to invoke the browser.
Should the URL be encoded by
The default browser is set by option
"browser", in turn set by
the environment variable R_BROWSER which is by default set in
file ‘R_HOME/etc/Renviron’ to a choice
made manually or automatically when R was configured. (See
Startup for where to override that default value.)
To suppress showing URLs altogether, use the value
On many platforms it is best to set option
"browser" to a
generic program/script and let that invoke the user's choice of
browser. For example, on macOS use
open and on many other
browser supports remote control and R knows how to perform
it, the URL is opened in any already-running browser or a new one if
necessary. This mechanism currently is available for browsers which
"-remote openURL(...)" interface (which includes
Mozilla and Opera), Galeon, KDE konqueror (via kfmclient) and
the GNOME interface to Mozilla. (Firefox has dropped support, but
defaults to using an already-running browser.) Note that the type of
browser is determined from its name, so this mechanism will only be
used if the browser is installed under its canonical name.
"-remote" will use any browser displaying on the X
server (whatever machine it is running on), the remote control
mechanism is only used if
DISPLAY points to the local host.
This may not allow displaying more than one URL at a time from a
It is the caller's responsibility to encode
url if necessary
To suppress showing URLs altogether, set
browser = "false".
The behaviour for arguments
url which are not URLs is
platform-dependent. Some platforms accept absolute file paths; fewer
accept relative file paths.
Which URL schemes are accepted is platform-specific: expect http://, https:// and ftp:// to work, but mailto: may or may not (and if it does may not use the user's preferred email client).
For the file:// scheme the format accepted (if any) can depend on both browser and OS.
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