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I've started working in the R-4.0.1 The doBy package doesn't exist. Anyone know a workaround to this? NOTE: I am really just interested in the summaryBy command.

user13608970
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    The package does exist on CRAN: https://cran.r-project.org/web/packages/doBy/index.html. Why do you think it doesn't exist? – MrFlick Jul 14 '20 at 15:05

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On my side, no matter how hard I tried I got this message in Rstudio:

> library(doBy)
Error in library(doBy) : no package named 'doBy' is found

The "classic" installation command did not work for me. When I tried to find it via RGui or RStudio, it didn't appear either.

  1. I updated my R version (from RGui)

  2. I reopened RGui, install my package, there, when I searched for doBy, it appeared in the list of packages.

  3. After this installation (and loading) on RGui, I opened Rtudio in administrator mode and retried the command :

    install.packages("doBy", dependencies = TRUE)

And, it FINALLY worked. Edit : i have the same issue with other package, and this solution works for many case.

Lucie Kuminska
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