Hi there,
new idea (at 10 at night). All the emails keep me thinking (btw thanks
for all the feedback).
What does this do on linux?
getOption("pdfviewer")
### I got this idea from: getS3method("print","vignette")
On windows, (an advantage...) somebody wrote a little program "open.exe"
that comes stock with an R-installation, which somehow accesses the file
system to find the default program to for a certain file type. I am
guessing this little beauty is the engine of "shell.exec".
(An honest) cheers,
Brian
On 9/14/2011 7:49 PM, Simon Urbanek wrote:
On Sep 14, 2011, at 1:10 PM, Henrik Bengtsson wrote:
On Wed, Sep 14, 2011 at 8:35 AM, Simon Urbanek
<simon.urba...@r-project.org> wrote:
On Sep 14, 2011, at 11:08 AM, Brian Oney wrote:
Hi Steve,
a quick look at "browseURL" will tell you that indeed "system" or "shell.exec"
(on a windows platform) is used to open up a URL.
The "open " part of the proposed function was written to work on a Mac. Because Mac is a
unix platform, I assumed that the function "open" would be omnipresent on unix platforms,
my mistake.
Well, the problem is that "open" is unfortunately mapped to openvt on Linux
systems which is a quite obscure anachronism. But since Linux is Linux there is no
standard way to open a file, so it doesn't really matter ;) -- xdg-utils come closest to
what one may call standard but on many systems they are not installed by default (in fact
on none of the Linux machines I have around). For URLs R does the hard work to try to
figure out what to do with them (it also does the same for PDFs), but you may end up
opening things in a browser although that's not what you had in mind.
Well I guess, we know how to make to work on a mac.
Yes, "open" works very well on Macs and is extremely useful (I use it all the
time - among other things you can use it with directories to browse them...) - it is
still beyond me why other unices don't bother ...
Apple probably patented it.
I'm pretty sure it's at least as old as NeXT so that's way before the abuse of
software patents ;) - but who knows ...
Cheers,
S
/Henrik
Cheers,
Simon
I will make the transition to Linux and get back to this in a while, ok?
Cheers,
Brian
On 9/14/2011 2:50 PM, Stephen Weston wrote:
2011/9/14 Uwe Ligges<lig...@statistik.tu-dortmund.de>:
On 14.09.2011 12:27, Brian Oney wrote:
Hi List,
I hope this is correct list to propose function extensions, sorry if not.
I am preparing for a (hopefully painless) migration to linux. As far as
I am aware of, the function "shell.exec" only comes with the windows
version. I think this is a handy little function and would like to see
my scripts work when I migrate.
May I propose something (like the following)?
open.file<- function(file) {
if(.Platform$OS.type=="windows") {shell.exec(file)} else
{system(paste("open ",file))}
}
Or just a small addition to the shell.exec function and no new named
function.
Hope the idea isn't received as "too stupid".
What is "open" supposed to do on a non-Windows machine? I do not have it on
the only Linux installation I looked at now, hence we obviously cannot
assume it exists on an arbitrary installation.
I think the nearest equivalent for those running Gnome or KDE may be
"xdg-open". So there would probably need to be a new option for specifying
the appropriate command.
Personally, I am more inclined to use "system" for executing commands,
and "browseURL" for opening documents. "browseURL" even uses
"xdg-open" in my R installation on my Linux machine.
- Steve
Best,
Uwe Ligges
Cheers,
Brian
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