Thank you!
On Fri, Jun 13, 2025 at 1:14 PM Rui Barradas <ruipbarra...@sapo.pt> wrote:
>
> Às 07:41 de 13/06/2025, Luigi Marongiu escreveu:
> > Thank you, facets are good but I was looking for something that could
> > merge everything in a single plot. I found that I could create an
> > additional column, say M (merge), that accommodates two parameters
> > into one, for instance, `a + A`, `a + B` etc. By grouping for M, I can
> > kind of stratify the data...
> >
> > On Sun, Jun 8, 2025 at 6:03 PM Rui Barradas <ruipbarra...@sapo.pt> wrote:
> >>
> >> Às 07:21 de 08/06/2025, Luigi Marongiu escreveu:
> >>> I would like to plot multivariate data with ggplot2. I have multiple
> >>> groups that I need to account for: I have the `x` and `y` values, but
> >>> the data must be stratified also by `w` and `z`. I can group by either
> >>> `w` or `z`, but how can I group for both simultaneously?
> >>> In essence, in the example below, the legend should have two columns
> >>> (A and B) and five rows (which are already there since the data is
> >>> stratified by w). There should be 10 colors.
> >>> How can I do that?
> >>> Thank you
> >>>
> >>>>>>>>>
> >>> ```
> >>> df = data.frame(x = c(rep(1,5), rep(2,5), rep(3,5), rep(4,5)),
> >>> w = rep(letters[1:5],4),
> >>> z = c(rep(LETTERS[1],10),
> >>> rep(LETTERS[2],10)),
> >>> y = rnorm(20),
> >>> stringsAsFactors = FALSE)
> >>> library(ggplot2)
> >>> ggplot(df, aes(x=x, y=y, colour=w, group=w)) +
> >>> geom_line(linewidth=2) +
> >>> ggtitle("A+B")
> >>> ggplot(df[df$z=="A",], aes(x=x, y=y, colour=w, group=w)) +
> >>> geom_line(linewidth=2) +
> >>> ggtitle("A")
> >>> ggplot(df[df$z=="B",], aes(x=x, y=y, colour=w, group=w)) +
> >>> geom_line(linewidth=2) +
> >>> ggtitle("B")
> >>> ```
> >>>
> >>> ______________________________________________
> >>> R-help@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.
> >> Hello,
> >>
> >> You can use the 4th variable to define facets. Like this?
> >>
> >>
> >> ggplot(df, aes(x=x, y=y, colour=w)) +
> >> geom_line(linewidth=2) +
> >> facet_wrap(~ z, scales = "free_x") +
> >> ggtitle("A+B")
> >>
> >>
> >> Hope this helps,
> >>
> >> Rui Barradas
> >>
> >>
> >>
> >> --
> >> Este e-mail foi analisado pelo software antivírus AVG para verificar a
> >> presença de vírus.
> >> www.avg.com
> >
> >
> >
> Hello,
>
> Any of Jeff's two suggestions seems to work well.
> (I prefer the first one.)
>
>
>
> library(ggplot2)
> library(dplyr)
>
> ggplot(df, aes(x = x, y = y, colour = w, linetype = z)) +
> geom_line(linewidth = 2) +
> ggtitle("A+B")
>
> df %>%
> mutate(M = interaction(w, z)) %>% # arrange(M) %>% print()
> ggplot(aes(x=x, y=y, colour=w, group = M)) +
> geom_line(linewidth=2) +
> ggtitle("A+B")
>
>
>
> Hope this helps,
>
> Rui Barradas
>
--
Best regards,
Luigi
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