Ah, I accidentally replied only to you. I re-introduced the list here...
Maybe this [1] will help?
[1]
https://coolbutuseless.github.io/2021/11/04/custom-ggplot2-point-shapes-with-gggrid/
On October 8, 2023 1:04:23 AM PDT, Chris Evans wrote:
>
>On 07/10/2023 17:45, Jeff Newmiller wrote:
>>
SO helpful. Thanks to all. I _think_ the answer to Jeff's question may
be "It should only be problematical on R earlier than 2.10". At least,
that's how I read this:
There is a portable way to have arbitrary text in character strings
(only) in your R code, which is to supply them in Unicode
Doesn't the outcome of this suggestion still depend on which fonts and output
device you are using? ... and that is to some degree still system dependent...
On October 6, 2023 7:50:00 AM PDT, Rui Barradas wrote:
>Às 10:09 de 06/10/2023, Chris Evans via R-help escreveu:
>> The reason I am asking
Às 10:09 de 06/10/2023, Chris Evans via R-help escreveu:
The reason I am asking is that I would like to mark areas on a plot
using geom_polygon() and aes(fill = variable) to fill various polygons
forming the background of a plot with different colours. Then I would
like to overlay that with
Another thing that I considered, but doesn't seem to be supported, is
rotating the symbols. I noticed that that does work with text. So you
could use a arrow symbol and then specify the angle aesthetic. But this
still relies on text and unfortunately there are no arrowlike symbols in
ASCII:
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
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,
Sadly, no. Still shows the same legend with both sets of fill
mappings. I have found a workaround, sadly
much longer than yours (!) that does get me what I want but it is a real
bodge. Still interested to see
if there is a way to create a downward pointing solid symbol but here is
my bodge
Does adding
, show.legend = c("color"=TRUE, "fill"=FALSE)
to the geom_point do what you want?
Best,
Jan
On 06-10-2023 11:09, Chris Evans via R-help wrote:
library(tidyverse)
tibble(x = 2:9, y = 2:9, c = c(rep("A", 5), rep("B", 3))) -> tmpTibPoints
tibble(x = c(1, 5, 5, 1), y = c(1, 1, 5,
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