[R] Line-wrap problem

[Charles C. Berry]

On Fri, 18 Apr 2008, Matthew Fero wrote:

> I'm wondering if someone can tell me how R determines where to wrap
> lines in its output.
>
> I'd like to understand this because occasionally often after running
> a script the output of R no longer wraps at the correct location.

Try

 	options( "width" )
 	source( "your-script.R" )
 	options( "width" )

I would guess that your script is changing options("width") and that 
resizing silently changes it to a suitable value.

If so you can do this

 	old.options <- options( "width" )
 	source( "your-script.R" )
 	options( width = old.options$width )

HTH,

Chuck


> For example, the statement, '1:40' would ordinarily return something
> like this...
>
>   [1]    1   2   3    4   5   6   7    8   9 10 11 12 13 14 15 16 17
> 18 19 20
> [21] 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40
>
> and is instead returning longer lines like this...
>
>   [1]    1   2   3    4   5   6   7    8   9 10 11 12 13 14 15 16 17
> 18 19 20
>  21 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40
>
> As you can imagine this makes it hard to read output because the
> results no longer line up in nice columns.  This seems to happen
> without my having resized the window but resizing the window can
> occasionally make it better.
>
> Thanks,
>
> Matthew
>
>
> Other details:
> System: Mac OS X v.10.4.11
> Running R from command line (Terminal.app) or from R.app
>
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>

Charles C. Berry                            (858) 534-2098
                                             Dept of Family/Preventive Medicine
E mailto:cberry at tajo.ucsd.edu	            UC San Diego
http://famprevmed.ucsd.edu/faculty/cberry/  La Jolla, San Diego 92093-0901