[R] Is it possible to get a downward pointing solid triangle plotting symbol in R?

[Chris Evans]

Thanks again Jan.  That is lovely and clean and I probably should have 
seen that option.

I had anxieties about the portability of using text.  (The function will 
end up in my
https://github.com/cpsyctc/CECPfuns package so I'd like it to be fairly 
immune to character
sets and different platforms in different countries.

I'm morphing this question a lot now but I guess it's still on topic 
really.  I know
I need to put in some time to understand the complexities of R and 
platforms (I'm
pretty exclusively on Linux, Ubuntu or Debian now so have mostly done 
the ostrich thing
about these issues though I do hit problems exchanging things with my 
Spanish speaking
colleagues).  Jan or anyone: any simple reassurance or pointers to 
resources I should
best use for homework about these issues?

TIA (again!)

Chris

On 06/10/2023 12:55, Jan van der Laan wrote:
> You are right, sorry.
>
> Another possible solution then: use geom_text instead of geom_point 
> and use a triangle shape as text:
>
> ggplot(data = tmpTibPoints,
>        aes(x = x, y = y)) +
>   geom_polygon(data = tmpTibAreas,
>                aes(x = x, y = y, fill = a)) +
>   geom_text(data = tmpTibPoints,
>              aes(x = x, y = y, label = "▼", color = c),
>              size = 6) + guides(color = FALSE)
>
[much snipped]


-- 
Chris Evans (he/him)
Visiting Professor, UDLA, Quito, Ecuador & Honorary Professor, 
University of Roehampton, London, UK.
Work web site: https://www.psyctc.org/psyctc/
CORE site: http://www.coresystemtrust.org.uk/
Personal site: https://www.psyctc.org/pelerinage2016/