On 13/12/2009 1:30 PM, Viju Moses wrote:
Thanks again to all for the persuasive expert statements.
@ Duncan, I tried Rterm.exe as advised by you in the other post, hoping for
my desired (soft wrapping) behavior. I didn't find it there either.
Right, I rarely use it and didn't notice that. Running "Rterm --ess"
will give it to you, but it may have other undesirable side effects:
that tells Rterm to assume Emacs is controlling things.
Duncan Murdoch
Shouldn't be difficult to get used to breaking lines manually, I guess.
Regards,
Viju
-----Original Message-----
From: Ista Zahn [mailto:istaz...@gmail.com]
Sent: Sunday, December 13, 2009 23:48
To: Viju Moses
Cc: Jorge Ivan Velez; r-help@r-project.org
Subject: Re: [R] lines don't wrap. must scroll horizontally to see/edit a
long line in R GUI
Many applications have what is known as "soft wrapping", where the
text wraps visually without inserting a new line. I don't use Windows,
so I don't know if the R gui can do this or not, but I still maintain
that the proper solution is to break your long input lines manually at
places that both make syntactic sense and make the code easier to
read.
-Ista
-----Original Message-----
From: Duncan Murdoch [mailto:murd...@stats.uwo.ca]
Sent: Sunday, December 13, 2009 23:51
To: Viju Moses
Cc: r-help@r-project.org
Subject: Re: [R] lines don't wrap. must scroll horizontally to see/edit a
long line in R GUI
On 13/12/2009 12:43 PM, Viju Moses wrote:
Thanks for responding.
Problem: When I am typing a command, it does not wrap like it does in this
email while typing. As I reach the right border, a horizontal scroll bar
appears, and as I keep typing further, the initial part of the line starts
disappearing below the left border of the console. So, I am unable to see
a
long line completely without moving the scroll bar right and left. R
output,
eg >1:120 (as discussed earlier), is wrapped fine.
I find this difficult because I had been using R in Linux (terminal), now
it
is necessary for me to use it both in Windows and Linux. My first question
was short because it is exactly the same as in the link I'd pasted. The
purpose of this question is simply to ask how this can be changed. I
understand it's a feature, not a bug.
A screenshot of the R console is attached. Notice the $ on the left and
the
scrollbar below.
Hope that's explanation enough. Looking forward to your reply.
This is by design. Carriage returns have syntactic meaning in R, so the
editor shouldn't display phantom ones. In Linux there's no choice
because R doesn't control how text is displayed, but the Windows GUI
gets it right.
Word wrapping in an email is different, because emails generally contain
text, not programs. It becomes problematic when you see things like
alongvariableanme <- anotherlongvariablename
+ 1
and you don't know how R would interpret it, because it might be either
one or two statements.
Perhaps a smart wrapping algorithm could introduce line breaks only
where they don't affect the meaning of the line, but then there would
have to be statements that were unbreakable.
So my advice is simply to put your own line breaks into your code.
Don't use an editor that wraps long lines unless it puts hard breaks
between them.
Duncan Murdoch
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