[R] Question about Rfast colMins and colMaxs

Bert Gunter bgunter@4567 @end|ng |rom gm@||@com
Tue Nov 30 21:19:50 CET 2021

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:
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

Note that RStudio maintains its own help resources at:
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].
> 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>
> ______________________________________________
> 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.

More information about the R-help mailing list