[R] Looping through a dataframe

[John Kane]

As Bert says that does not look like R

Have a look an these links for some suggestions on asking questions here.

 http://adv-r.had.co.nz/Reproducibility.html

http://stackoverflow.com/questions/5963269/how-to-make-a-great-r-reproducible-example

On Tue, 21 Jul 2020 at 13:42, Bert Gunter <bgunter.4567 using gmail.com> wrote:

> What language are you programming in? -- it certainly isn't R.
>
> I suggest that you stop what you're doing and go through an R tutorial or
> two before proceeding. This list cannot serve as a substitute for doing
> such homework (is this homework, btw? -- that's off topic here) nor can we
> provide such tutorials.
>
> I'm pretty sure the answer is quite simple, though it's a bit unclear as
> you did not provide a reprex (see the posting guide linked below for how to
> post here). However, I see no purpose in my blurting it out when you do not
> seem aware of even the most basic R constructs -- e.g. see ?while. Of
> course, others may disagree and provide you what you seek.
>
>
> 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 Tue, Jul 21, 2020 at 10:21 AM e-mail ma015k3113 via R-help <
> r-help using r-project.org> wrote:
>
> > Dear All, I have a dataframe which has a few thousand companies with
> > unique company numbers and names and  each company has data for several
> > years and each year is stored in a separate row.
> >
> > I want to get a total for the number of years of data for each company.
> > When I loop through the data with the following command  I get a value of
> > ‘1’ rather than a total of the rows for each company
> >
> > All_companies$count <-0
> >
> > while All_companies$COMPANY_NAME == All_companies$COMPANY_NAME + 1
> >
> > + {All_companies$count=All_companies$count+1}
> >
> > Can you kindly help me on this?
> >
> > Ahson
> >         [[alternative HTML version deleted]]
> >
> > ______________________________________________
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> > 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 using 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.
>


-- 
John Kane
Kingston ON Canada

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