[R] Controlling line-join style in Lattice

[Peter Ehlers]

I should add that you can also use the par.settings()
mechanism to set your linejoin specification on the fly:

  x <- 1:4; y <- c(1,3,2,4)
  xyplot(y ~ x, type = "l", lwd = 20,
     par.settings = list(grid.pars = list(linejoin = "mitre")))

Peter Ehlers

On 2012-08-22 12:28, Peter Ehlers wrote:
> You can set grid parameters in the grid.pars component of
> trellis.par.get().
>
>    x <- 1:4; y <- c(1,3,2,4)
>    xyplot(y ~ x, type = "l", lwd = 20)  # default linejoin
>
>    ## set linejoin to 'mitre'
>    trellis.par.set(grid.pars = list(linejoin = "mitre"))
>    xyplot(y ~ x, type = "l", lwd = 20)
>
> Peter Ehlers
>
> On 2012-08-22 11:09, Morgan, Andrew Parker wrote:
>> R users,
>>
>> I am creating a series of scatterplots with Lattice's xyplot().  Some of the plotting symbols are squares with thick borders.  The corners of the squares are rounded by default; I would like them to be square.  In base graphics this is easily done with par(ljoin = "mitre"), and in grid graphics with gpar(linejoin = "mitre").  Is there an analogous parameter in Lattice?  Passing ljoin as an argument to xyplot() or panel functions doesn't seem to work, and I can't find anything promising in lattice.par.get().
>>
>> Thanks,
>> Andrew Morgan
>> Department of Genetics
>> University of North Carolina - Chapel Hill
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>
> ______________________________________________
> 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.
>