[R] How to set colors, axis gap, and free scale in ggplot?

[Luigi Marongiu]

You are right, it did work.
Thanks
Case closed.

On Tue, Feb 22, 2022 at 3:35 PM Ron Crump <r.e.crump using warwick.ac.uk> wrote:
>
> What error?
> Those are warning messages to do with your call to geom_bar. I've never
> used geom_bar in that way, I'd create my summaries independently of
> the graphing, so can't comment on how it should be used.
>
> This simple example works fine for me:
> ```
> library(ggplot2)
> data(iris)
> ggplot(iris) +
>      geom_point(aes(x = Sepal.Width, y = Sepal.Length)) +
>      facet_wrap(~ Species, nrow = 1) +
>      theme(strip.text = element_text(size = 10,face = 'bold'))
> ```
>
> Ron.
>
>
> On 22/02/2022 14:25, Luigi Marongiu wrote:
> > I am trying instead to increase the size with `theme(strip.text.x =
> > element_text(size = 10))` (evem from 1 onwards) or `theme(strip.text.x
> > = element_text(face = "bold"))` but it gives an error (same in both
> > cases, even when using `strip.text`):
> > ```
> > No summary function supplied, defaulting to `mean_se()`
> > No summary function supplied, defaulting to `mean_se()`
> > No summary function supplied, defaulting to `mean_se()`
> > No summary function supplied, defaulting to `mean_se()`
> > No summary function supplied, defaulting to `mean_se()`
> > No summary function supplied, defaulting to `mean_se()`
> > No summary function supplied, defaulting to `mean_se()`
> > No summary function supplied, defaulting to `mean_se()`
> > Warning messages:
> > 1: Ignoring unknown parameters: fun.y
> > 2: Removed 24 rows containing non-finite values (stat_summary).
> > 3: Removed 24 rows containing non-finite values (stat_summary).
> > 4: Removed 24 rows containing missing values (geom_point).
> >
> > On Tue, Feb 22, 2022 at 12:41 PM Ron Crump <r.e.crump using warwick.ac.uk> wrote:
> >>
> >> Hi Luigi,
> >>
> >>> # FROM HERE IT DOES NOT WORK
> >>> facet_grid(. ~ Species, scales="free_y") + # THE SCALE IS FIXED FOR ALL PANELS
> >>
> >> I don't think you can force facet_grid to do this: the y scale will
> >> always be fixed within a row (unless someone else tells you differently,
> >> I may have misunderstood this)  - this is to allow easy comparison and,
> >> consequently, comprehension of the graphic as you scan across a row.
> >>
> >> You can achieve what you want with:
> >> facet_wrap(~ Species, nrow = 1, scales = "free_y")
> >> but for the reason above, I'm not sure it's a good thing to do.
> >>
> >>> scale_colour_manual(values = c("palegreen4", "orangered3")) # THE
> >>> COLORS ARE AUTOMATIC
> >>
> >> You're setting the colour manually - which relates to lines, not fill
> >> and you have no colour aesthetic set, just a fill one.
> >>
> >> Use scale_fill_manual(values = c("palegreen4", "orangered3")) instead.
> >>
> >>> I would also like to increase the size of the axis labels and the
> >>> title size of the panels.
> >>> What is the correct syntax?
> >>
> >> See ?theme - you are interested in axis.title (maybe axis.title.x,
> >> axis.title.y) and strip.text (the labels for the facets). See also
> >> ?element_text as in theme, you basically want to put something like
> >> axis.title = element_text(...), replacing ... with the settings you
> >> want.
> >>
> >> For help specifically on ggplot2 and other tidyverse packages, I'd
> >> recommend using https://community.rstudio.com in the future.
> >>
> >> Best wishes,
> >> Ron.
> >>
> >
> >



-- 
Best regards,
Luigi