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

[Bert Gunter]

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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