[R] About error in the panel

[Jeff Newmiller]

Copy one statement at a time into a new R session.  When you get an error you will know what you need to look at more closely. RStudio makes this easy with the Start New R Session menu option and using Ctrl-Enter in the editor.
-- 
Sent from my phone. Please excuse my brevity.

On March 11, 2017 11:53:41 AM PST, lily li <chocold12 at gmail.com> wrote:
>I think this is the problem. How to solve then?
>
>On Sat, Mar 11, 2017 at 12:18 PM, Bert Gunter <bgunter.4567 at gmail.com>
>wrote:
>
>> Typo, should be:
>>
>> 3. A guess: You are sourcing the entire script in the editor panel
>> into R, and there is something screwed up there.
>>
>> -- 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 Sat, Mar 11, 2017 at 11:14 AM, lily li <chocold12 at gmail.com>
>wrote:
>> > Thanks for your reply. I thought anything about R questions can be
>posted
>> > here.
>> >
>> > About your third point, what does it mean? I did the same thing
>before
>> for
>> > other scripts, but this one does not work. Thanks again.
>> >
>> > On Sat, Mar 11, 2017 at 12:12 PM, Bert Gunter
><bgunter.4567 at gmail.com>
>> > wrote:
>> >>
>> >> 1. Not reproducible, hence impossible to say.
>> >>
>> >> 2. This is r-help. RStudio is totally separate and its own support
>page.
>> >>
>> >> 3. A guess: Use are sourcing the entire script in the editor panel
>> >> into R, and there is something screwed up there.
>> >>
>> >> Cheers,
>> >> 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 Sat, Mar 11, 2017 at 10:50 AM, lily li <chocold12 at gmail.com>
>wrote:
>> >> > Hi R users,
>> >> >
>> >> > I have a problem about using R studio. For example, there is a
>> dataframe
>> >> > that has many columns. I want to aggregated column X and column
>Y into
>> >> > column Z. Column Z does not exist before the aggregation. I use
>the
>> code
>> >> > below:
>> >> > df$Z = df$X + df$Y
>> >> >
>> >> > However, it does not work in the top left panel in Rstudio, and
>has
>> the
>> >> > following warning message:
>> >> > Error in `$<-.data.frame`(`*tmp*`, "Z", value = numeric(0)) :
>> >> >   replacement has 0 rows, data has 34333
>> >> >
>> >> > If I type the same code in the Console panel (bottom left
>panel), it
>> >> > works.
>> >> > How to deal with this problem? Thanks.
>> >> >
>> >> >         [[alternative HTML version deleted]]
>> >> >
>> >> > ______________________________________________
>> >> > R-help at r-project.org mailing list -- To UNSUBSCRIBE and more,
>see
>> >> > https://stat.ethz.ch/mailman/listinfo/r-help
>> >> > PLEASE do read the posting guide
>> >> > http://www.R-project.org/posting-guide.html
>> >> > and provide commented, minimal, self-contained, reproducible
>code.
>> >
>> >
>>
>
>	[[alternative HTML version deleted]]
>
>______________________________________________
>R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see
>https://stat.ethz.ch/mailman/listinfo/r-help
>PLEASE do read the posting guide
>http://www.R-project.org/posting-guide.html
>and provide commented, minimal, self-contained, reproducible code.