[R] na.rm = T treatment by ggplot2's geom_bar

[Dimitri Liakhovitski]

Thank you, Bert!

I do NOT have an object named "T" in scope (I checked - and besides, it
would never occur to me to use this name).
TRUE or T results in the same unexpected behavior:

ggplot(data = md, mapping = aes(x = a)) +
  geom_bar(na.rm = TRUE)



On Thu, Jul 27, 2017 at 10:57 AM, Bert Gunter <bgunter.4567 at gmail.com>
wrote:

> Just a thought:
>
> Did you try na.rm = TRUE  in case you have an object named "T" in scope?
>
> -- Bert
>
>
> Bert Gunter
>
> "The trouble with having an open mind is that people keep coming along
> and sticking things into it."
> -- Opus (aka Berkeley Breathed in his "Bloom County" comic strip )
>
>
> On Thu, Jul 27, 2017 at 7:49 AM, Dimitri Liakhovitski
> <dimitri.liakhovitski at gmail.com> wrote:
> > To clarify: my question is not about "who could I exclude NAs from being
> > counted" - I know how to do that.
> > My question is: Why na.rm = T is not working for geom_bar in this case?
> >
> > On Thu, Jul 27, 2017 at 8:24 AM, Dimitri Liakhovitski <
> > dimitri.liakhovitski at gmail.com> wrote:
> >
> >> Hello!
> >>
> >> I am trying to understand how ggplot2's geom_bar treats NAs.
> >> The help file says:
> >>
> >> library(ggplot2)
> >> ?geom_bar
> >> na.rm: If FALSE, the default, missing values are removed with a warning.
> >> If TRUE, missing values are silently removed.
> >>
> >> I am trying it out:
> >> md <- data.frame(a = c(letters[1:5], letters[1:4], letters[1:3], rep(NA,
> >> 3)))
> >> str(md); levels(md$a)
> >>
> >> ggplot(data = md, mapping = aes(x = a)) +
> >>   geom_bar(na.rm = F)
> >> It runs without warnings and generates counts for each factor level AS
> >> WELL AS the NAs. Makes sense.
> >>
> >> Now, I don't want the NAs to be counted. So, I run:
> >> ggplot(data = md, mapping = aes(x = a)) +
> >>   geom_bar(na.rm = T)
> >>
> >> But I still have NAs in the picture. Why?
> >> What am I missing?
> >>
> >> Thank you!
> >> --
> >> Dimitri Liakhovitski
> >>
> >
> >
> >
> > --
> > Dimitri Liakhovitski
> >
> >         [[alternative HTML version deleted]]
> >
> > ______________________________________________
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> > PLEASE do read the posting guide http://www.R-project.org/
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> > and provide commented, minimal, self-contained, reproducible code.
>



-- 
Dimitri Liakhovitski

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