[R] Problem with Example with Lattice

[Bert Gunter]

I was surprised this worked at all, as I usually use the formula interface.

Anyway, you need to explicitly specify the point types via the pch
argument.  The default uses trellis.par.get("dot.symbol"), which is
just a single value.


-- Bert



Bert Gunter

"The trouble with having an open mind is that people keep coming along
and sticking things into it."
-- Opus (aka Berkeley Breathed in his "Bloom County" comic strip )


On Sat, May 27, 2017 at 6:03 AM, Lorenzo Isella
<lorenzo.isella at gmail.com> wrote:
> Dear All,
> I am making my baby steps with the lattice graphic system.
> I am going through the great book by Sarkar which provides plenty of
> examples.
> However, I notice that some of them appear to give a different result
> on my system.
> For instance, consider the following
>
>
> library(lattice)
> library(latticeExtra)
>
> dotplot(VADeaths, type = "o",
> auto.key = list(lines = TRUE, space = "right"),
> main = "Death Rates in Virginia - 1940",
> xlab = "Rate (per 1000)")
>
>
> This should produce a plot where I have different point shapes
> connected by different line shapes, but I only one point shape
> connected by solid segments.
> Am I misunderstanding something basic?
> Many thanks
>
> Lorenzodeepayan.sarkar at r
>
>
>
> sessionInfo()
> R version 3.4.0 (2017-04-21)
> Platform: x86_64-pc-linux-gnu (64-bit)
> Running under: Debian GNU/Linux 8 (jessie)
>
> Matrix products: default
> BLAS: /usr/lib/libblas/libblas.so.3.0
> LAPACK: /usr/lib/lapack/liblapack.so.3.0
>
> locale:
> [1] LC_CTYPE=en_GB.utf8       LC_NUMERIC=C
>  [3] LC_TIME=en_GB.utf8        LC_COLLATE=en_GB.utf8
>   [5] LC_MONETARY=en_GB.utf8    LC_MESSAGES=en_GB.utf8
>    [7] LC_PAPER=en_GB.utf8       LC_NAME=C
>     [9] LC_ADDRESS=C              LC_TELEPHONE=C
>     [11] LC_MEASUREMENT=en_GB.utf8 LC_IDENTIFICATION=C
>
> attached base packages:
> [1] stats     graphics  grDevices utils     datasets  methods   base
>
> other attached packages:
> [1] latticeExtra_0.6-28 RColorBrewer_1.1-2  lattice_0.20-35
>
> loaded via a namespace (and not attached):
> [1] compiler_3.4.0 tools_3.4.0    grid_3.4.0
>
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