[R] Question about Rfast colMins and colMaxs

[Bert Gunter]

... but Rfast is *not* a "standard" package, as the rest of the PG
excerpt says. So contact the maintainer and ask him/her what they
think the best practice should be for their package. As has been
pointed out already, it appears to differ from the usual "read it in
as a data frame" procedure.

Bert

On Tue, Nov 30, 2021 at 2:11 PM Stephen H. Dawson, DSL
<service using shdawson.com> wrote:
>
> Right, R Studio is not R.
>
> However, the Rfast package is part of R.
>
> https://cran.r-project.org/web/packages/Rfast/index.html
>
> So, rephrasing my question...
> What is the best practice to bring a csv file into R so it can be
> accessed by colMaxs and colMins, please?
>
> *Stephen Dawson, DSL*
> /Executive Strategy Consultant/
> Business & Technology
> +1 (865) 804-3454
> http://www.shdawson.com <http://www.shdawson.com>
>
>
> On 11/30/21 3:19 PM, Bert Gunter wrote:
> > RStudio is **not** R. In particular, the so-called TidyVerse consists
> > of all *non*-standard contributed packages, about which the PG says:
> >
> > "For questions about functions in standard packages distributed with R
> > (see the FAQ Add-on packages in R), ask questions on R-help.
> > [The link is:
> > https://cran.r-project.org/doc/FAQ/R-FAQ.html#Add-on-packages-in-R
> > This gives the list of current _standard_ packages]
> >
> > If the question relates to a contributed package , e.g., one
> > downloaded from CRAN, try contacting the package maintainer first. You
> > can also use find("functionname") and
> > packageDescription("packagename") to find this information. Only send
> > such questions to R-help or R-devel if you get no reply or need
> > further assistance. This applies to both requests for help and to bug
> > reports."
> >
> > Note that RStudio maintains its own help resources at:
> > https://community.rstudio.com/
> > This is where questions about the TidyVerse, ggplot, etc. should be posted.
> >
> >
> >
> > 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, Nov 30, 2021 at 10:55 AM Stephen H. Dawson, DSL via R-help
> > <r-help using r-project.org> wrote:
> >> Hi,
> >>
> >>
> >> I am working to understand the Rfast functions of colMins and colMaxs. I
> >> worked through the example listed on page 54 of the PDF.
> >>
> >> https://cran.r-project.org/web/packages/Rfast/index.html
> >>
> >> https://cran.r-project.org/web/packages/Rfast/Rfast.pdf
> >>
> >> My data is in a CSV file. So, I bring it into R Studio using:
> >> Data <- read.csv("./input/DataSet05.csv", header=T)
> >>
> >> However, I read the instructions listed on page 54 of the PDF saying I
> >> need to bring data into R using a matrix. I think read.csv brings the
> >> data in as a dataframe. I think colMins is failing because it is looking
> >> for a matrix but finds a dataframe.
> >>
> >>   > colMaxs(Data)
> >> Error in colMaxs(Data) :
> >>     Not compatible with requested type: [type=list; target=double].
> >>   > colMins(Data, na.rm = TRUE)
> >> Error in colMins(Data, na.rm = TRUE) :
> >>     unused argument (na.rm = TRUE)
> >>   > colMins(Data, value = FALSE, parallel = FALSE)
> >> Error in colMins(Data, value = FALSE, parallel = FALSE) :
> >>     Not compatible with requested type: [type=list; target=double].
> >>
> >> QUESTION
> >> What is the best practice to bring a csv file into R Studio so it can be
> >> accessed by colMaxs and colMins, please?
> >>
> >>
> >> Thanks,
> >> --
> >> *Stephen Dawson, DSL*
> >> /Executive Strategy Consultant/
> >> Business & Technology
> >> +1 (865) 804-3454
> >> http://www.shdawson.com <http://www.shdawson.com>
> >>
> >> ______________________________________________
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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.
>
>