R help - Sep 2024 - how to specify point symbols in the key on a lattice dotplot

I am making a dotplot with lattice, as follows:

dd %>% dotplot( segment ~ transit_time, groups = impact,  data = .,
               as.table = TRUE,
                pch = 16:17,
                cex = 1.8,
                scales = list(cex = 1.4),
               auto.key = TRUE)

impact is a factor with two levels.

They key shows 2 open circles, one of each color of my two
plotting symbols, one for each group. I would like the
symbols in the key to match the plotting characters in the graph: 16
(filled circle) for one group and 17 (filled triangle) for the second
group.  How would I do that? I have not had any success with supplying
arguments to auto.key, simpleKey, or key. Guess I'm not understanding
the syntax.

Thanks.

--Chris Ryan

-- 
Agency Statistical Consulting, LLC
Helping those in public service get the most from their data.
www.agencystatistical.com

Public GnuPG email encryption key at
https://keys.openpgp.org
9E53101D261BEC070CFF1A0DC8BC50E715A672A0

Add:

key = list(points=16:17)

Into the dotplot section possibly without the autokey

On Fri, 13 Sep 2024, 08:19 Christopher W. Ryan, <cwr at
agencystatistical.com>
wrote:
> I am making a dotplot with lattice, as follows:
>
> dd %>% dotplot( segment ~ transit_time, groups = impact,  data = .,
>                as.table = TRUE,
>                 pch = 16:17,
>                 cex = 1.8,
>                 scales = list(cex = 1.4),
>                auto.key = TRUE)
>
> impact is a factor with two levels.
>
> They key shows 2 open circles, one of each color of my two
> plotting symbols, one for each group. I would like the
> symbols in the key to match the plotting characters in the graph: 16
> (filled circle) for one group and 17 (filled triangle) for the second
> group.  How would I do that? I have not had any success with supplying
> arguments to auto.key, simpleKey, or key. Guess I'm not understanding
> the syntax.
>
> Thanks.
>
> --Chris Ryan
>
> --
> Agency Statistical Consulting, LLC
> Helping those in public service get the most from their data.
> www.agencystatistical.com
>
> Public GnuPG email encryption key at
> https://keys.openpgp.org
> 9E53101D261BEC070CFF1A0DC8BC50E715A672A0
>
> ______________________________________________
> R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
> https://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>
	[[alternative HTML version deleted]]

On Fri, 13 Sept 2024 at 12:49, Christopher W. Ryan
<cwr at agencystatistical.com> wrote:
>
> I am making a dotplot with lattice, as follows:
>
> dd %>% dotplot( segment ~ transit_time, groups = impact,  data = .,
>                as.table = TRUE,
>                 pch = 16:17,
>                 cex = 1.8,
>                 scales = list(cex = 1.4),
>                auto.key = TRUE)
>
> impact is a factor with two levels.
>
> They key shows 2 open circles, one of each color of my two
> plotting symbols, one for each group. I would like the
> symbols in the key to match the plotting characters in the graph: 16
> (filled circle) for one group and 17 (filled triangle) for the second
> group.  How would I do that? I have not had any success with supplying
> arguments to auto.key, simpleKey, or key. Guess I'm not understanding
> the syntax.
Specifying key = list(...) will work, but the shortcut is to add

par.settings = simpleTheme(pch = 16:17, cex = 1.8)

That way, you don't need to specify the parameters anywhere else.

-Deepayan
> Thanks.
>
> --Chris Ryan
>
> --
> Agency Statistical Consulting, LLC
> Helping those in public service get the most from their data.
> www.agencystatistical.com
>
> Public GnuPG email encryption key at
> https://keys.openpgp.org
> 9E53101D261BEC070CFF1A0DC8BC50E715A672A0
>
> ______________________________________________
> R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
https://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.