[R] curvedarrow (some graphics problem)

[baptiste auguie]

You're right, I meant to write "lines"not "line". The strange thing is, 
although "line" isn't listed in ?unit, it doesn't return an error on my 
machine,

 > unit(-1, "line")
[1] -1line
 > unit(-1, "lines")
[1] -1lines

Reading from 
http://svn.r-project.org/R/trunk/src/library/grid/src/unit.c "line" is 
listed as a pseudonym, so I guess it is a valid unit after all.

sessionInfo()
R version 2.9.0 (2009-04-17)
i386-apple-darwin8.11.1

locale:
en_GB.UTF-8/en_GB.UTF-8/C/C/en_GB.UTF-8/en_GB.UTF-8

attached base packages:
[1] datasets  stats     grid ( 2.9.0 )     graphics  grDevices utils     
methods   base    



Best,

baptiste





David Winsemius wrote:
>
> On Jun 24, 2009, at 1:21 AM, casperyc wrote:
>
>>
>> [quote]>  grid.text("t", x=0.3, y=unit(-1, "line"), vp=vp2)
>> Error in valid.units(units) : Invalid unit
>>> grid.text("s", 0.8, unit(-1, "line"), gp=gpar(col="red"), vp=vp2)
>> Error in valid.units(units) : Invalid unit[/quote]
>>
>> Hi,
>>
>> I have loaded the [grid] package. It seems that I have to load another
>> package?
>>
> No. Such a need might have been suggested by a function not found 
> error. In this case the details are in the help page for the unit 
> function in grid. The unit parameter was mis-specified.
>
> ?unit
>
> Try:
>
>  grid.text("t", x=0.3, y=unit(-1, "lines"), vp=vp2)
> -- 
>  grid.text("s", 0.8, unit(-1, "lines"), gp=gpar(col="red"), vp=vp2)
>
>
> David Winsemius, MD
> Heritage Laboratories
> West Hartford, CT
>
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide 
> http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>


-- 
_____________________________

Baptiste Auguié

School of Physics
University of Exeter
Stocker Road,
Exeter, Devon,
EX4 4QL, UK

Phone: +44 1392 264187

http://newton.ex.ac.uk/research/emag